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PS 0004EN 03 G. BERNARD 1998-08-12 J . VIAT 2011-03-21 1 / 3
Sheet N° Revision Written by Date Signature Approved by Date Signature Page
SAFETY SHEET
SF6
Use and Handling
CAUSE OR ORIGIN OF HAZARD.
Sulphur hexafluoride (SF6) is a gas which in its basic state is colourless, odourless and tasteless. It is
not toxic, but it cannot sustain life. It is a heavy gas that is dispersed slowly into the atmosphere.
In its natural state, SF6 is delivered and stored in pressurized tanks (bottles or spheres) at a pressure
of approximately 20 bar at 20°C (in its liquid form) and complies with IEC standard 376.
However, under the effect of the electric arc, the SF6 molecules break up and the elements mostly
recombine during cooling either due to extinction of the arc or by regeneration caused by thepresence of active absorbent charges within the c ircuit breaker.
Various chemical reactions, associated with the volatilization of the materials in contact with the
electric arc, create either fluoridized or sulphurous secondary gas products or solid products in the
form of metallic fluoride powder ; or again, in the presence of traces of water or moisture,
hydrofluoric acid or sulphur dioxide.
In the life-cycle of the equipment, SF6 can be observed not only in its pure state, but also in its
contaminated state :
- the use of new SF6 for filling or adding,
- leaks under normal operating conditions,
- maintenance involving the opening of circuit breakers containing old SF6 (decomposition
products),
- abnormal conditions (internal arc fault causing the shielding to break),
- circuit breaker recycling on end of life-cycle.
WORK REQUIREMENTS.
Follow the instructions for the transport of pressurized containers.
The storage of these containers is governed by the same storage regulations as compressed gas
bottles :
- keep away from any source of heat and in a cool, dry and well-ventilated area,
Whilst SF6 in its pure state is not toxic, the decomposition products have varying degrees of toxicity.
They may irritate the skin, the eyes and the mucous membranes; and in massive amounts may
cause serious lesions (oedema, heart failure, c irculatory disorders and unconsciousness).
However, very rapidly and before there is any real danger, signs such as a pungent smell, irritation
of the mucous of the nose, the eyes and the mouth will give a warning and the personnel
concerned will have sufficient time to take the necessary safety actions.
Where the gas is used or handled within enclosed premises, ensure adequate ventilation,especially low down.
If the gas is inhaled, the area concerned must be evacuated immediately.
Under normal operating conditions, leaks are exceptionally minor and not critical, even when the
gas contains impurities (due to the regenerating filters in the circuit breaker).
Filling and where necessary topping up operations must be carried out using the appropriate tools.
During maintenance operations, or at the end of the life-cycle, dust inside the equipment must beremoved by a vacuum extractor and the operator should wear a mask. Gas recovery must be
carried out using the appropriate gas recovery equipment.
Gases and decomposition products must be treated and/or disposed of by specialist organizations.
Under extremely abnormal conditions (e.g. break in the shielding) in an enc losed space, individual
protective equipment is recommended.
Lastly, it is forbidden to smoke, drink, eat or keep food in the vicinity of open SF6 equipment,
whether indoors or outside (harmful dust).
SAFETY INSTRUCTIONS.
OBSERVE ALL GENERAL INSTRUCTIONS GOVERNING INSTALLATION, COMMISSIONING AND
OPERATION IN ACCORDANC E WITH CURRENTLY ACCEPTED PRACTICES AS WELL AS THOSE LAID
DOWN IN THE DOCUMENTATION SUPPLIED WITH THE EQUIPMENT.
It is essential that both the fitter and the userread IEC Technical Report 1634 regarding the use andhandling of sulphur hexafluoride gas.
Components The following table lists the principle components of the operating mecha-nisms:
Mark Component Function
11 CB Operating Mechanism Provides control of the CB13 Inspection port Used to visually inspect the position
of the optical CB positional indicator(See Para.: ‘CB position indicatorstatus’)
14 Inspection port Used to visually inspect the posi-tion(s) of the various earthing switchcontrols.(See Para. ‘Disconnector Switchposition indicator status’)
15 Operating mechanisms forthe various disconnector
switches
Provides control of the busbar earth-ing switch, the startup switch and the
earthing switch(es).26 Low Voltage (LV) Cabinet Houses the low voltage functions for
the whole CB.
27 Synoptic diagram Used to give a visual indication of theoverall status of the CB.
Description The active section of the circuit breaker comprises:
-- The mechanism casing (A) -- on the side of the moving part,
-- The interrupter chamber (C) – in a composite envelope (1),
-- The casing (B) -- on the side of the fixed section.
Diagram
1 23
C
A B
Circuit--breakerOpen
Description The composite envelope (1) enclosing the interrupter chamber separates thetwo casings, providing insulation between the incoming andoutgoing sectionsof the circuit breaker.The current sockets (2 & 3) situated in the extensions to thecasings, are usedto provide connections to the busbars.
Opening On receiving a manual or electrical open order, the energy accumulated in the
operating mechanism’s opening spring (32) is freed.
The control lever (30), activated by the opening spring (32), transmits themovement to the lower pole lever (34) via the rod linkage (31), in turn movingthe moving contact (11), thus separating the contacts.
Representation of“OPEN” state
30
31
34
32
11
Closing On receiving a manual or electrical closure order, the energy accumulated inthe operating mechanism’s closing spring (33) is freed.This operates the moving contact (11) and closes the Interrupter Chamber.
When tube (12) in the moving contact (11) separates from the permanent con-
tact (21), the current is routed via the arc contacts (17).
2112 1711
Stage 2 :Thermal effect
When the contacts (17) separate, an arc appears, and the energy from thisarc causes a rise in the pressure in the thermal expansion chamber (Vt),which is enclosed by the stem (24) of the fixed contact (23) and the isolating
When the stem (24) of the fixed contact (23) is extracted from the nozzle (14),
the thermal overpressure in the chamber (Vt) is released, which causes a jetof gas, just before the current reaches zero, which ensures the arc is com-pletely extinguished.
Simultaneously, the increase in pressure in the vicinity of the arc spreadsacross to the piston (18) exerting a force on the mobile fittings and thus reduc-ing the loading imposed on the circuit breaker’s operating mechanisms.
232414
Vt
18
Stage 4 :Complete opening
The arc is extinguished.Themolecules of SF6 gas, torn apart by the arc, are instantaneously reconsti-tuted. The residual gas from the breaking is absorbed by the molecular sieve(9); a few particles are deposited as a coating of dust, which has no effect onthe circuit breaker itself.
Function descriptionFK 3-12 spring operating mechanismsFor circuit breakers
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Energy store • Closing spring 70.25 stores energy to close the circuit breaker and tocharge trip spring 70.20. Surplus energy ensures that the circuit breakercan be safely closed in all situations.
• Trip spring 70.20 furnishes the energy necessary to trip the circuit
breaker. The trip spring may be in the operating mechanism or in thecircuit breaker, depending on the circuit breaker design.
Energy storeCharging mechanism
• Motor 70.01 and gearing 79.04 serve to charge closing spring 70.25
Closing unit • On closing, the energy of closing spring 70.25 is transmitted to camdisk 70.10 via closing chain 70.26, crank lever 71.43 and closing shaft70.09. The cam disc drives main shaft 70.12 via roller lever 70.11. Thecircuit breaker is closed and trip spring 70.20 charged via drive lever70.18 and the linkage
• Cam disc 70.10 controls the travel/time characteristic of the main con-tact during closing.
Tripping unit • If trip spring 70.20 is mounted in the operating mechanism, its energy istransmitted to the circuit breaker via trip chain 70.19, main shaft 70.12and drive lever 70.18.
• The motion is retarde by trip dashpot 70.17 at the end of the trippingprocess.
Latches • When closing spring 70.25 is charged, closing latch 70.05 supports itthrough crank lever 71.43 and support pin 71.44.
• When trip spring 70.20 is charged, trip latch 70.16 supports it by thelever arm of roller lever 70.11 and main shaft 70.12.
Function descriptionFK 3-12 spring operating mechanismsFor circuit breakers
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Auxi liaire switch • Auxiliary switch 70.21 Coupled to main shaft 70.12 serves as a refer-ence for the main contact for control, signaling and interlock functions
• When the circuit breaker is closed, one contact of auxiliary switch 70.21interrupts the closing coil circuit and thus prevents further electrical ex-citation.
• When the circuit breaker is in the tripped position, one contact of auxil-iary switch 70.21 breaks the operating release coil circuit and thus pre-vents further electrical excitation.
Motor limit switch • Motor limit switch 70.24 closes and interrupts the motor circuit. It alsoperforms interlock functions.
• While closing spring 70.25 is being charged, one contact of motor limitswitch 70.24 interupts the closing coil circuit and thus preventspremature electrical closing operation.
Mechanical clos inginterlock
• When the circuit breaker is closed, a lever coupled to main shaft 70.12disables closing latch 70.05 and prevents any further release of theclosing system.
Indicators • Circuit breaker position indicator 70.52 displays the position of the maincontact (I or O).
• Spring position indicator 70.31 displays the state (charged or dis-charged) of closing spring 70.25.
Function descriptionFK 3-12 spring operating mechanismsFor circuit breakers
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Operating states
Note • The two illustrations below show the possible operating states andsequences of an oper ating mechanism. These are characterisedmains by the position of the circuit breaker to which the mechanism isattached, and by the position of the closing spring. The position of thespring is always linked to the position of the circuit breaker. Thepositions of the auxiliary switch and motor limit switch are importantsecondary characteristics.
• An operating mechanism remains in a steady operating state until itsposition is changed by an external control command. It can then passthrough well-defined transient (unsteady) operating states.
Note • The following functions will now be described : charging the energystore, closing, recharging and opening. The operating mechanism andthe circuit breaker pass through the operating states in the order
Function descriptionFK 3-12 spring operating mechanismsFor circuit breakers
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• Motor 70.01 starts as soon as the control voltage is imposed. It chargesclosing spring 70.25 via gearing 79.04, chain wheel 71.42, crank lever71.43 and closing chain 70.26. This process comes to an end whencrank journal 70.29 with attached closing chain 70.26 has passed top
dead point A and support pin 71.44 of crank lever 71.43 rests againstclosing latch 70.05.
• At the end of the charging process, the pair of winding levers 71.32 islifted though the (not shown) disconnecting device. Gearing 79.04 andmotor 70.01, which is shut off via motor limit switch actuating cam 70.22and motor limit switch 70.24 can now run down freely without imposingany load on closing latch 70.05.
• Motor limit switch 70.24 has now moved so as to make the closing cir-cuit, and spring position indicator 70.31 has moved to the «closingspring charged» position.
• If motor voltage drops out during the charging process, the return-stopof the pair of winding levers 71.32 keeps chain wheel 71.42 from turning
blackward and thus prevents the unwinding of closing spring 70.25.
• Circuit breaker and operating mechanism are in operating state 2
Function descriptionFK 3-12 spring operating mechanismsFor circuit breakers
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Closing operation
70.25 70.22 70.21 70.20
79.04 71.32 70.05 70.07 70.06 70.10 70.11
70.05 Closing latch 70.21 Auxiliary switch70.06 Closing magnet 70.22 Motor limit switch actuating cam70.07 Manual CLOSE release 70.24 Motor limit switch
70.09 Closing shaft 70.25 Closing spring70.10 Cam disc 70.26 Closing chain70.11 Roller lever 70.29 Crank journal70.12 Main shaft 70.31 Spring position indicator70.16 Trip latch 70.52 Cicuit breaker position indicator70.18 Operating lever 71.32 Pair of winding lever with return-stop70.19 Trip chain 71.43 Crank lever70.20 Trip spring 79.04 Gearing
• Circuit breaker and operating mechanism are in operating state 2.
Operating state 2: steady
Motor Closing Opening
• Closing latch 70.05 is released by the electrical command to closingmagnet 70.06 or by actuation of mechanical manual release 70.07.
• Closing shaft 70.09 is accelerated by the effect of closing spring 70.25,
Function descriptionFK 3-12 spring operating mechanismsFor circuit breakers
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• Cam disc 70.10 turns roller lever 70.11, which follows it, in the CLOSEdirection. The circuit breaker is closed via main shaft 70.12, operatinglever 70.18 and an attached linkage. At the end of the closing move-ment, after a 60° rotation, specially designed cam disc 70.10 brings
main shaft 70.12 to a safe, low-impact stop against trip latch 70.16 viaa lever arm of roller lever 70.11. At the same time, cam disc 70.10 hasmoved away from roller lever 70.11 and the circuit breaker can be trip-ped.
• In the course of the closing movement, trip spring 70.20 is charged viatrip chain 70.19.
• The return-stop of pair of winding lever 71.32 keeps the fast gearingstages from tracking the motion during the closing operation.
• After closing shaft 70.09 has turned through approx. 180°, crank journal70.29 passes through bottom dead point B. The Kinetic energy stillpossessed by crank wheel 70.30 is returned to closing spring 70.25(recovered) via chain 70.26. By virtue of this principle, the closingmovement is brought to a gentle, impact-free stop.
• Control, indicating and interlock functions at the end of the closingmovement:
− Auxiliary switch 70.21, which is coupled to main shaft 70.12 hasmade the opening release coil circuit and broken the closing circuit.The circuit breaker can be tripped electrically, and further actuationof the closing coil is prevented.
− A lever (not shown) controlled by main shaft 70.12 has disabledclosing latch 70.05, thus mechanically preventing any further releaseof the closing system.
− Circuit breaker position indicator 70.52 has turned to the CLOSEDposition with main shaft 70.12.
− Motor limit switch 70.24 actuated via motor limit switch actuatingcam 70.22, has made the motor circuit.
− The closing coil circuit has been broken by one contact of motor limitswitch 70.24. Any further electrical actuation of the closing coil isthus prevented
• Spring position indicator 70.31 has simultaneously moved to «closingspring discharged».
• Circuit breaker and operating mechanism are in operating state 3.
Function descriptionFK 3-12 spring operating mechanismsFor circuit breakers
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• When motor limit switch 70.24 is actuated by motor limit switch actuat-ing cam 70.22 at the end of the closing movement, the motor circuit ismade and closing spring 70.25 is automatically recharged.
• If no breaking operation has taken place during the charging process,
the circuit breaker is in steady operating state 4 at the end of the charg-ing process. This is the normal operating state of all circuit breakers inthe electric power grid.
• Circuit breaker and operating mechanism are in operating state 4.
Operating state 4: steady
Motor Closing Opening
M
S1
S2 S2
S1
Y1 Y2
• The circuit breaker is ready for the operating sequence O-CO.
Function descriptionFK 3-12 spring operating mechanismsFor circuit breakers
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• Trip latch 70.16 is released by the electrical command to trip magnet70.15 or by actuation of mechanical manual release 70.13. Main shaft70.12 and the circuit breaker, which is coupled to it, are accelerated inthe O direction by charged trip spring 70.20, Trip dashpot 70.17 comes
into action toward the end of the tripping process, slowing the movingmasses of the circuit breaker and operating mechanism to a stop
• Control, indicating and interlock functions at the end of the openingmovement:
− Auxiliary switch 70.21 Which is coupled to main shaft 70.12 has bro-ken the opening release coil circuit and made the closing circuit.Thus any further electrical actuation of the opening release coil isprevented; an electrical closing operation is again possible.
− A lever (not shown) controlled by main shaft 70.12 has again en-abled closing latch 70.05 for a subsequent closing operation. Thecircuit breaker can be closed mechanically.
− Circuit breaker position indicator 70.52 has been turned to the O po-
sition with the main shaft.
• Circuit breaker and operating mechanism are in operating state 2
Introduction CMK --type electrical controls are used for the bus bar, earthing switch and
starting switch mechanisms.
Covering and controlplate
A covering allows to protect the group.Open door, there is an equipped controlplate comprising :
-- interlocking,
-- optical indicator,
-- a hole closed by a shutter controlled by manual commutator allowingalso to operate the mechanism by emergency crank + tip, (excepted forstarting switch for which access is blocked).
Motorisation andservo control sec-tions
The control mechanism :
-- A low--powered AC motor, supplied by an AC source.
-- A reducing gearbox in a sealed, lubricant--filled housing.The top of the output drive shaft from the reducing gearbox is attached to theend--stop controls and a sprocket on the very end which in turn is connectedto the optical indicator via a chain.
-- A block of auxiliary contacts is fittedto each side of the end--of--travel stops.
Localization The threshold densimeter (1) is installed onto the control block (2) situated onthe first pole.
1
1
horizontal assembling
vertical assembling
2
2
1
2
FKG1
horizontal assembling
FKG2
FKG2
Working The densimeter is fitted with two internal contacts. These contacts close suc-cessively if the gas’s density diminishes and determine 2 distinct thresholds.These contacts are wired to the terminal block inside the cubicle and are usu-ally left at the user’s disposal for the following use :
D Alarm pressure ” pae” acts as a warning (topping up necessary).
D Minimum fonctional pressure for insulation ” pme” must be used either tolock the circuit--breaker in position or to cause automatic opening. The optionis chosen by the client in keeping with operating requirements.
All the circuit--breaker’s rated performances are guaranteed up to the mini-mum specified ambient temperature andthe minimum fonctional pressure forinsulation ” pme”.
Introduction The electrical characteristics of switchgear depend on the density of SF6 gas
i.e. the mass of gas pumped into a compartment of a given capacity.
Constanttemperature
At constant temperature, an increase of gas density results in a higher gaspressure against the walls of compartment.
Constant density At constant density, with an invariable compartment volume, the pressurechanges in the same way as the temperature. Since the gas density remainsinvariable owing to the fact that no modification occurs in the quantity of gasor the volume of the relevant compartment, the electrical characteristics of theswitchgear will remain unchanged.
Conclusion Since it is difficult to measure the gas density directly, it is essential to knowaccurately its absolute pressure and temperature.
The pressure of SF6 gas is mea-sured by of a standard pressuregauge witha deformable diaphragmactuating an indicating pointer.One surface of the diaphragm is incontact with the SF6 gas, while theother is in contact with the atmo-sphere. The difference between thegas and the atmosphere is thus
measured, taking atmosphericpressure as a reference. This is themeasurement of the effective pres-sure of the SF6 gas.
SF6
Atmospheric pressure
Standard pressure gauge
Absolute
If the deformable diaphragm, onesurface of which is in contact withthe SF6 gas, blocks a volume wherea vacuum has been developed, thepressure gauge measures the pres-
sure difference between that of theSF6 gas and the vacuum. Since thelatter is zero, the pressure gaugemeasures the absolute pressure of the gas.The absolute pressure of the SF6
gas, independent of atmosphericpressure, reflects the quantity of gas introduced into the compart-ment and hence its density at thepresent temperature.This is measured by means of anabsolute pressure gauge which is
less generally used and more deli-cate than a effective pressuregauge. This is the reason why a ef-fective pressure gauge is used, pro-vision being made for correctionsrequired by atmospheric pressurevariations resulting from atmo-spheric disturbances and differ-ences of elevation.
Pressure units D The international unit pressure is the Pascal (Pa), and hectopascal (hPa)used for atmospheric pressure measurements.
D The practical unit is the bar (14.503 p.s.i.)
1 bar = 1 000 hPa = 14.5 psi1 bar = 100 kPa10 bar = 1 MPa
D Standard atmospheric pressure is equal to 1,013 hPa at sea level and anair temperature of 20°C (68°F).
Measuring density When it is not possible to directly measure density, this maybe checked usingan industrial pressure gauge capable of measuring the effective pressure.
An effective pressure value corresponds to the rated density, determined fornormal atmospheric pressure (1,013 hPa) and an ambient temperature of 20°C (68°F).For each pressure reading (filling, inspection of densimeter thresholds...), therated effective pressure should be corrected according to the ambient tem-perature and atmospheric pressure of the site at the time thereading is taken.The real pressure is therefore :
Preal = Prated effective in accordance with temperature + ΔPp *
* ΔPp : correction in accordance with atmospheric pressure.
Introduction The storage procedures defined below are for storage times of less than 2years. For longer periods, specialpackaging must be designed and appropri-ate procedures devised.
Short--term storage(6 months)
The table below indicate how to stock the main components of the circuit---breaker for a medium--term storage :
Component Storage
Protective bag in good condition(vacuum--wrapped)
The apparatus must be stored with itstransport packaging open whilstplaced on beams in a closed, but ven-
tilated, flood--proof place.
Protective bag not vacuum---wrapped (teared)
The apparatus must be stored onbeams in a closed, but ventilated,flood--proof place, placed on beamsin stable transport position, packingopen.In order to prevent corrosion damagedue to formation of condensation, it ismandatory that the heating circuit beswitched on.
Medium--term storage(less than 2 years)
The apparatus must be stored on beams in a closed, but ventilated, flood---proof place, placed on beams in stable transport position, packing open.
D In order to prevent corrosion damage due to formation of condensation, itis mandatory that the heating circuit be switched on.
D Check for presence of SF6 gas in poles (referto module “Checking forpres-ence of SF6 gas in poles”).
PROTECT THE ELECTRICAL CABINET AGAINST DUST. (THE ELEC-TRICAL CABINET MUST BE COVERED BUT NOT AIRTIGHT).
ANY CHANGE OF LOCATION OF THE APPARATUS (EVEN AFTER COM-MISSIONING) SHOULD BE DONE AT A REDUCED PRESSURE OF0.03 MPa.
The material has to be installed in a suitable room and in the same conditions
as an operational item of equipment (fixing to the floor, SF6 gas filling at theassigned filling pressure for pre isolation).
D The anti--condensation resistance of cabinets and controls to be con-nected.
NOTE : When the cabinet has no anti--condensation resistance, stor-age has to take place in a room where there are no significant temper-ature variations.
D It is advisable to carry out at least 2 CO cycles with SF6 gas at rated pres-sure every 6 months following the procedure below in order to check the cor-rect operation of the circuit breaker:
Step Action
1 Check the SF6 gas pressure. The SF6 gas pressure for mechanicaloperation is Pre (rated pressure).
NOTE : No mechanical operation authorized with SF6 pressure Pme.
2 Close the supply circuit to the resetting motor (the motor starts andset the closing spring).
3 Carry out 2 CO cycle, the equipment is in the ”OPEN” position withthe closing spring set and the opening spring released.
4 Stop the resetting motor supply circuit.
5 Perform 1 new CO cycle. The equipment is then inthe ”OPEN”posi-tion, with closing and opening springs released.
The table below gives the instructions of environment to respect for the erec-
tion :
Instruction Comment
A
Verify the Civil engineering work : dimensions,levels of concrete pads (structure fixation), inaccordance with the tolerances given by Civilwork standards (refer to device outline).
B Avoid any dust production and masonry work
during erection of the device.
Erectioninstructions
The table below gives the instructions to respect for proper erection of the cir-cuit--breaker :
Instruction Comment
1
Read all the “Installation” modules completelybefore beginning erection works.The erection instructions describe all the proce-dures to be carried out as well as their chrono-
logical order.
2
The shipping case should be open as requiredduring erection procedures.CAUTION : Respect sub--assemblies iden-tification.
3 Respect references to other modules,
i.e. :“Bolting and Tightening torquesI”.
Warning No responsibility is taken over by ALSTOM Grid. for damages and distur-bances resulting out of non--adherence to the “Installation” modules.
Rewinder AVOID ANY DUST PRODUCTION AND MASSORY WORK DURING CIR-
CUIT--BREAKER ERECTION.
Check the distancesbetween axles of ex-ixting busbars
Check the values for X, Y, and Z, distances between axles of exixting busbarsand dimensioning of bay’s attachment points with sighting gear(see VS...GAD01D).
VS...GAD01D
Circuit-breaker
General arrangement
frame and cubi-cle fixation points
Evenness of theCivil EngineeringStructures
Using shims, adjust the differences in evenness of the concrete structureswith a tolerance of:± 1mm, and with a shims’ height adjustment differenceof: 0 + 15mm
Installing the circuit --breaker -- Step 1, continued
Fastening onto the
ground wtth spacers
Z = IPB axis to the ground
Using a telescopic sight, level the circuit breaker assembly by adjusting,wherenecessary, evenness±1mmusing shims(between breaker supportsand spacers) and tighten to torque with the screws V (supplied by ALSTOMGrid).NOTE : Y = Distance between phases :
1500 : beams fitted with 2 feets and 2 supports> 1500 : beams fitted with 3 feets and 3 supports
VS...GAD01D
Circuit-breakerGeneral arrangement
Z
Y
Y
CAUTION!CORRECT ADJUSTMENT CONDI-TIONS THE CORRECT FUNCTION-
Installing the circuit --breaker -- Step 2, continued
Connection Connection of circuit--breaker/busbar enclosures.
. PROCEED WITH CONNECTION OF BAY/BUSBARENCLOSURES (OUTSIDE ALSTOM Grid SUPPLY RAN-GE) OTHERWISE TAKE ALL NECESSARIES PRECAU-TIONS FOR PROTECT THE EQUIPMENT
. ALL PRECAUTIONS MUST BE TAKEN AT THE TIMEOF ENCLOSURE CONNECTION IN ORDER TO PRO-TECT THE INTERNAL COMPONENT (VTs, CTs, ISOCOMPOSITE, ...) AND AVOID THE INSIDE ENCLOSUREPOLLUTION.
.DO NOT MODIFY THE ADJUSTMENTS REALIZED ONTHE BAY (ALTITUDE, LATITUDE).USE SLEEVES SO AS TO MAKE UP FOR COAXIALITY FAULTS.
CAUTION !
VS...GAD01D
Circuit-breakerGeneral arrangement
CONNECTION SLEE-VES BUSBAR / BAY
ENCLOSURES (OUT-SIDE ALSTOM GridSUPPLY RANGE).
For connection withwelding
CAUTION! : WELDING OF ENCLOSURES EXCEPT PRESSURE
.ALL PRECAUTIONS MUST BE TAKEN AT THE TIME OF ENCLOSURECONNECTION IN ORDER specifically for the welding, TO PROTECTTHE INTERNAL COMPONENT (VTs, CTs, ISO COMPOSITE, ...) ANDAVOID THE INSIDE ENCLOSURE POLLUTION.
Connections Carry out the joining up of the flexible connections as follows :
(See VS...GAD01D, ...31--501 and ...31--001)D Prepare the contact surfaces on the braids, and the circuit breaker connec-tions.Refer to the procedure “Connections with preparation of electrical contactsurfaces”, see summary for reference (...31--501).
D Assemble the braids, and tighten to torque.Refer to the procedure “Bolting and tightening torques”, see summary for ref-erence (...31--001).
Safety instructions for overhauling after the dielectric test,(IF APPLICABLE)
REMINDER ALSTOM Grid S.A. declines anyliability for failures caused by the non---respect of these directives.
Procedure with a PT D Potential transformer(s) with a fuse
It is imperative to respect the order of assembly :
-- remove the short--circuit device from the secondary winding,
-- Re--assemble the fuse--holder braid to the circuit breaker or disconnectorconnections by applying the procedures for “preparation of the electrical con-tact surfaces” and “Bolting and tightening torques”,
-- Re--assemble the fuse.
D Potential transformer(s) without a fuseIt is imperative to respect the order of assembly :
-- Remove the short--circuit device from the secondary winding,
-- Re--assemble the braid connecting the P1/H1 (primary terminal) of the PTto the circuit breaker or disconnector by applying the procedures “preparationof the electrical contact surfaces” and “Bolting and tightening torques”,
Procedure with acapacitor
D Capacitor
Re--assemble by applying the procedures “Preparation of electrical con-tact surfaces” and “Bolting and tightening torques”.
Procedure with alightning arrester
D Lightning arrester
Re--assemble by applying the procedures “Preparation of electrical con-tact surfaces” and “Bolting and tightening torques”.
Later scheduling
of the test
If the dielectric test is planned for later it is imperative to respect the following
instructions.
D Protect the interior of the equipment by temporarily remounting the metalenclosure covers with all of the bolting in order to avoid pollution of the insideof the enclosure, without applying the procedures “Preparation of the electri-cal contact surfaces” and “Bolting and tightening torques”.
D Following the dielectric test carried out later whilst following the direc-tives of the “precautions for the equipment before dielectric testing”,continue the chronological order for assembly of the device as described inthe manual.
Measuring main resistance procedure of single circuit --breaker, continued
Position of material put in position ”LOCAL” (manual operating mechanism), the operating
mechanism,
-- circuit--breaker closed,
-- disconnector opened,
-- earthing switch(es) or starting disconnector (if applicable) opened.
Process D Establish a direct current at least 100 A between the input and output of the apparatus to be tested.
D Connect the measuring equipment on the holes allowed.
D Measurement (R1) of voltage decrease between these two points givesthe resistance value at the rate of 100 mV for 1 mΩ.
100 A
100 A
R1HoleØ 4
R1HoleØ 4
Reminder The resistance on each apparatus must be less than the value given in“ACCEPTANCE CRITERIA”.Refer to the document “ACCEPTANCE CRITERIA”, see summary for refer-ence.
Measuring main resistance procedure of generator circuit--breaker
Position of material put in position ”LOCAL” (manual operating mechanism), the operating me-
chanism,
-- circuit-breaker and disconnector closed,
-- earthing switch(es) or starting disconnector (if applicable) opened.
Process D Establish a direct current at least 100 A between the input and output of the apparatus to be tested.
D Connect the measuring equipment on the holes allowed.
D Measurement (R2) of voltage decrease between these two points givesthe resistance value at the rate of 100 mV for 1 mΩ.
100 A
100 A
R2HoleØ 4
R2HoleØ 4
Reminder The resistance on each apparatus must be less than the value given in“ACCEPTANCE CRITERIA”.Refer to the document “ACCEPTANCE CRITERIA”, see summary for refer-ence.
Measuring main resistance procedure of single disconnector
Position of material put in position ”LOCAL” (manual operating mechanism), the operating me-
chanism,
-- circuit-breaker opened,
-- disconnector closed,
-- earthing switch(es) opened (if applicable),
Process D Establish a direct current at least 100 A between the input and output of the apparatus to be tested.
D Connect the measuring equipment on the holes allowed.
D Measurement (R3) of voltage decrease between these two points givesthe resistance value at the rate of 100 mV for 1 mΩ.
R3HoleØ 4
100 A 100 A
R3HoleØ 4
Reminder The resistance on each apparatus must be less than the value given in“ACCEPTANCE CRITERIA”.Refer to the document “ACCEPTANCE CRITERIA”, see summary for refer-ence.
Process The ALSTOM supply being restricted to the end pads of apparatus, flexible
connections and bolting hardware excluded, this manual does not give anyregulations concerning the contact resistance existing between the pads andthese connections.
However, the attention is pointed out on the importance lying with the qualityof these contacts, which depends on the assembling conditions (surfacecondition, tightening torque for screws and bolts) andhaving these conditionsmaintened times goes.For more information purposes, no total contact resistance should exceed
Flexible connectors The flexibleconnectors must immediately be attached to the connectorplate
once the contact surfaces have been prepared.Fasten the connections between circuit--breaker and busbar using screws,tighten to the appropriate torque.
BRAID CONNECTIONS ANDSCREWS NOT SUPPLIED BY
ALSTOM
daNm
Circuit-breaker
layout
VS...GAD01D
Importantinformation
With regards junctions crossed by the installation’s rated current, contactresistance/braid must not exceed 0,5 mΩ..
This measure will be realized before all commissioning.
Preparation before assemblage of aluminium alloy and aluminium alloy withoutcoating (contined)
Grease used The electrical contact grease consists of a mixture of :50 % neutral Vaseline (-01835106)
and50 % ”Contactal” grease (-01835118)
To ensure that this mixture is clean, it is preferable to prepare and stock it intubes.
A small quantity of this mixture should be applied to the prepared surface,spread out, then wiped over using a clean cloth, so that only a thin layer re-mains.
NOTE : THIS PROCEDURE IS APPLICABLE FOR A CIRCUIT--BREAKER FKG1,FKG2 standard or reverse, filling with SF6 gas three pole or single pole(1 filling SF6 gas per pole)
Presentation
Warning DUE TO RISK OF DAMAGE TO CERAMIC ENVELOPES DURINGTRANSPORTATION, PEOPLE PRESENT AT THE GAS FILLINGOPERATION SHOULD SHELTER THEMSELVES OR STAY AT AMINIMUM PROTECTION DISTANCE (ABOUT 50 m).
Necessary equipmentand tools
List of the necessary ALSTOM equipment and tools for the filling with SF 6
gas :
Mark Diagram Designation Number
2 Filling tool 1
8 Pressure reducer 1
6 SF6 gas bottle(s) *
14 Gauge 0--1 MPa 1
* depending on the apparatus.
In this module This module contains the following topics :
Process The table below gives the confirmation operation steps of the filling pressure
with SF6 gas :
Step Action Comment/Diagram
1 Disconnect the tube (10) -- of the pressure reducer -- fromthefilling tool (2).
NOTE : Keep the uncon-nected end of the tube (10)higher than the other end, tostop the SF6 gas which itcontains from escaping andto prevent moisture entering. 2
10
2 D Connect the tube (15) -- of the gauge 0--1 MPa (14) -- tothe filling tool (2).
D When the required pressureis confirmed, remove thegauge (14) and and store itaway from humidity.
14
15
2
3 Remove the filling tool (2) andrefit the plug (17) (4 daN.m)
Principle Having allowed the temperature to remain steady for at least 12 hours after
filling, it is necessary to check and definitively adjust the pressure to its cor-rected value -- defined according to both ambient temperature and atmo-spheric pressure.
Preparation The table below gives the preparation steps before checking pressure :
Step Action Diagram
1 D Remove the plug (17) andinstall the filling tool (2).
D Unscrew the valve--cap (3). 3
17
2
2 D Connect the tube (15) -- of the gauge 0--1 MPa (14) -- tothe filling tool (2).
Decision table The table below gives the process depending the pressure measured :
14
16
If the pressure measured is ... Action
correct End of control
too high
Adjust the pressure by means of valve
(16) on the gauge (14) to reach the re-quired corrected pressure.
too low
Top--up with SF6 gas
If the pressureadjustment
is ...Action
≤ 0,05 MPa End of control
> 0,05 MPa Proceed to anew inspectionafter a stabiliza-tion period of 2--3 hours.
End of control The table below gives the end steps of the checking pressure :
Step Action Diagram
1 Disconnect the gauge (14)0--1 MPa.
14
2 D Remove the filling tool (2)and re--install the plug (17), ap-plying a tightening torque of 4 daN.m; leak--tightness isonly guaranteed if this condi-tion is respected.
D Screw the valve--cap (3) onthe filling tool (2).
Principle This measurement is not required, the equipment being provided with
molecular sieves in sufficient quantity to give a dew point of ≤ 0°C (32°F) foran ambient temperature of 20°C (68°F), this applies for a unit filled to itsnominal pressure for 2 or 3 months.
Introduction After installation of the bay, completion of all earth circuit and electrical con-
nections, it is necessary to perform certain pre--commissioning inspections.These inspections should be performed with the apparatus ready to be com-missioned (energized), in other words.
D LV electrical circuits conforming, in voltage and type, with the low--voltagediagrams and rating plate of the apparatus.
D SF6 envelopes at rated SF6 pressure.
NOTE : Rated pressure, pressure of equipment after SF6 gas filling.
D Flexible connections linking circuit--breaker to busbar installed.
Reminder The measurement values demanded hereafter are to be taken during the test
and inspection programme prior to commissioning and checked with the val-ues of the “ acceptance criteria” and checking points end of this sheet, thenentered in the pre-commissioning test report (RES..., see summary for refer-ence)
. The document RES... which should then be sent for approvalto ALSTOM Grid S.A. Customer Service.
. If, however, the values do not conform with those foreseen in theacceptation criteria or general characteristics, contact :ALSTOM Grid S.A. Customer Service.
Caution DURING OPERATIONS REQUIRED AS PART OF INSPECTION PRO-GRAMME PRIOR TO COMMISSIONING, ALL POSSIBLE SAFETY PRE-CAUTIONS SHOULD BE TAKEN TO PROTECT PERSONNEL WORKINGON THE EQUIPMENT.See “Product safety sheets”, PS0000EN”
In this module This module contains the following checking inspections :
Whenever entering confined spaces there is a danger of death or seriousinjury by asphyxiation.
D Make sure the confined spaces are properly ventilated before personnelenter.
D Make sure a person outside of the confined space supervises the work.
D Obey the look--out/tag--out and permit to work procedures.
D Make sure escape routes are available and not blocked.
Reminder SF6 envelopes are at rated pressure following the SF6 gas filling operation.
Parameters Take note of parameters below :
D site altitude, in meters,
D atmospheric pressure of site in hPa,
D site temperature in °C.
Checking SF6 gas SF6 pressure values must obligatorily be read on the pressure inspectiongauge (tooling). Pay no attention to indications given by the dial densimeteron thefilling control block (where applicable) ; it is not accurate enough for thisinspection.
The table below gives the steps of checking :
Step Action Comment
1 Measure SF6 gas pressure bymeans of the pressure inspectiongauge (tooling)
Follow the instructions given inmodule ”Filling with SF6 gas”.
2 Correct pressure found. Follow the instructions given inmodule ”SF6 gas monitoring”.
SF6 gas
humidity level
The SF6 humidity level need not be known as the equipment is fitted with mo-
lecular sieves in sufficient numbers to give a dew point lower than, or equalto, 0°C at an ambient temperature of 20°C, for an apparatus filled to its ratedpressure for 2 or 3 months.
Test operations D The connection of auxiliary circuits is sufficiently advanced to allow remotecontrols to be used.
D Perform 10 CLOSING -- OPENING cycles electrically, by remote control.
Measurementsspecific to thecircuit--breaker
D Closing time
Measure the closing time of each pole from current emission in the circuit--breaker’s closingelectro-magnet until the moment when contacts touch in thepole.
D Opening time
Measure the opening time of each pole, from current emission in the circuit--
breaker’s opening electro-magnet to the moment when contacts separate inthe pole.
D Opening-closing sequence times :
Perform a CO cycle and measure the following times :
-- Closing time.
-- Opening time.
-- Closing-opening time.
D Operating of auxiliary contacts (CS) :
-- Closing operation : Measure operating times of auxiliary contacts. For bothtypes of contact (a and b).
-- Opening operation : Measure operating times of auxiliary contacts. Forboth types of contact (a and b).
D Simultaneity gap between poles :
Measure the simultaneity gap between poles during the following operations
Test operations of disconnector(s) (if applicable)
Introduction The measurement values demanded hereafter are to be taken during the test
and inspection programme prior to commissioning and checked with the val-ues of the “ acceptance criteria” and checking points end of this sheet, thenentered in the pre-commissioning test report (RES..., see summary for refer-ence) which should then be sent for approval to ALSTOM Grid S.A. Cus-tomer Service.If, however, the values do not conform with those foreseen in the acceptationcriteria or general characteristics, contact ALSTOM Grid S.A. CustomerService.
Closing time Measure, on each pole, the time lapse between current emission in the coilof the closing contactor of the disconnector and the moment when
contacts touch in the pole.
Opening time Measure, on each pole, the time lapse between current emission in the dis-connector opening electro-magnet and the moment when contacts separatein the pole.
Locking by means oflocks
Check that all keys required for locking are present.Check that the locking functions of disconnector and earthing switch(es) areoperating correctly, in accordance with the interlocking diagram, at both ope-ning and closing of apparatus.
Position signalisation Check thatdisconnector position indicators areoperatingcorrectly on themi-mic diagram.
Subject D This subject of this document is to describe the sequence of repair proce-dures necessary to correct any surface damage to the paint on the GCBenclosure.
D It is not in the realms of the procedure to details repair to the enclosureitself. The supervisor on site is to determine the severity of the damage to theGCB enclosure (aluminium alloy). This procedure covers damage fom smallscratch’s and scuffs. Greater damage than this would require the interventionof a site inspector.
Used products D Alcohol isopropanol.
D Paint PU780 (FARBATHANNE NF) (colour RAL 9006).
D Paintbrush.
D Emery paper.
D Not supplied : Cleaning rags, and gloves.
Process INSPECTION AND CLEAN :
D Once it has been determined that the damage is limited to only surfaceabrasion of the paint, the area of the damage will require cleaning and prepa-ration.
D Any mud, dirt orgrease must be removed from aroundthe areato berepai-
red.
D Mud and dirt can be cleaned and wiped off with wet rags and/or a sponge.Grease will need to be removed with alcohol. Once complete, leavefor a shorttime to dry. Wipe down with a clean rag.
D Use the emery paper to clean up the damaged area.
D Wipe away metal dust with a clean rag.
PAINTING :Open the pot of paint, stir if necessary, if the product has been in storage for
a long period of time.
Using the paintbrush, apply an even coat of paint over the damaged area.Paint an area slightly larger than the damaged area, covering all the surfacetouched by the emery cloth. Thus ensuring a good coverage of the exposedarea.
It have been determined that under normal circumstances one coat of paintis all that is necessary. Should the client require it a second coat of paint maybe added. To this end please refer to the details printed on the paint pot con-cerning drying times between paint applications.
Courant en service continu /Normal current/ Corriente en servicio continuo ________ A
Pouvoir de coupure en court-circuit/Short-circuit breaking current/ Poder de corte en corto circuito ________ kA
Pression absolue du gaz SF6 à Pression relative du gaz SF6 à Absolute SF6 gas pressure at 20°C ______ MPa Relative SF6 gas pressure at 20°C and 1013 hPa ____ MPa
Presión absoluta del gas SF6 à Presión relativa del gas SF6 àTension d’alimentation des circuits auxiliaires/Supply voltage of auxiliary circuits/Tensión de alimentación de los circuitos auxiliares
Bobin es Moteur ChauffageCoils ________ V(____) Motor ________ V(____) Heater ________ V(____)Bobinas Motor Calefación
Signalisation Circuit de commande Alarm ________ V(____) Control circuit ________ V(____)Señalización Circuito de mando
Cablage alimentations / Supply voltage wiring Définitif/ definitive
Temporaire/ Temporary
Le matériel a subi les contrôles et essais avant mise en service, conformément au fascicule (contrôles avant mise enservice).The material was subjected to the inspections and tests prior to commissioning as required in sections (inspections commissioning).El material fue sometido a las inspecciones y a los ensayos antes de la puesta en servicio como requerido en las secciones(inspecciones antes de la puesta en servicio).
Date de fin de montageErection completion date _____________ Fecha de conclusion de montaje
Réalisé parPerformed by _____________ Realizado por
Pour le clientFor the customer _____________ Para el cl iente
Date des essais de mise en serviceCommissioning date _______________ Fecha de puebras para puesta en servicio
Réalisés parPerformed by _____________ Realizado por
Pour le clientFor the customer _____________ Para el cl iente
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EB3 90 020-D24 RES 337 003 28/03/2011N° d’Instruction Indice Date de révision
IDENTIFICATIONIDENTIFICATIONIDENTIFICACIÓN
PôlePolePolo
N° de sérieSerial numberSerial numero
Rep .. / ..
P 1 _______________ __________ / 1
P 2 _______________ __________ / 2
P 3 _______________ __________ / 3
P1 : pôle situé juste derrière les organes de manœuvrepole juste behind operating mechanismsprimer polo detrás de los organos de maniobra
P3 : pôle situé à l’opposé des organes de manœuvrepole at the opposite of operating mechanismsúltimo polo detrás de los organos de maniobra
MONTAGE SUR SITE DU DISJONCTEUR ASSEMBLY OF THE CIRCUIT BREAKER ON SITEMONTAJE DEL INTERRUPTOR EN EL SITIO
Contrôle du génie civil, vérifi cations à l’aide d’une lunette de visée.Civil works inspection using sighting gear.Control de ingenier í a civil con un teodolito.
Contrôle des entraxes du jeu de barres.
Check the distances between busbars axles.
Controlar de las distancias entre ejes de juegos de barras .
Planéité du génie civil.
Flatness of the civil engineering structures.
Planeidad de la ingenier í a civil .
Tolérance ± 1mm, util isation de câles maxi 15mm.Tolerance ± 1mm, using shims maxi 15mm.Tolerance ± 1mm, utilizaci ón de calas maxi 15mm.
Fixation au sol et vérification de la planéité.
Fixing to the ground and flatness checks.
Fijaci ón al piso y verification de la planeidad.
Tolérance ± 1mm, utilisation de câles.Tolerance ± 1mm, using shims.
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VÉRIFICATION APRÈS MONTAGE
CHECKS AFTER ERECTIONCOMPROBACIÓN DESPUÈS INSTALACIÓN
Schéma de câblageWiring diagram ________________ Esquema de alambrado
Croquis de mon tage Assembly drawing ________________ Dibujo de instalación
Conformité croquis montageConformity to instalation drawing ____________ Conformidad con dibujo de montaje
Conformité schéma fil erieConformity to wiring diagram ________________ Conformidad con esquema de alambrado
Vérification de l’assemblageVérification of assembly ________________ Comprobación del montaje
Conformité signalisation optiqueConfomity of optical indication ________________ Conformidad de la señalización optica
Schéma de principeElementary diagram ________________ Esquema de principio
Relevé du compteur de manœuvreavant essais de fonctionnement mécanique _____Counter reading before mechanical operating testsLectura del contador de maniobraantes de los ensayos de functionamiento mecánico
Le matériel a été inspecté et monté confo rmément aux fascicules de la noticeThe material was subjected to the inspections and mounting operations as required in manual and prior to commissioning.El material fue inspeccionado y montado antes de la puesta en servicio como requerido en las secciones (inspecciones antes de la puesta en servicio).
Date de fin de montageErection completion date __________ Fecha de conclusion de montaje
Réalisé parPerformed by ______________________ Realizado por
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ESSAIS DE TENUE À LA TENSION DES CIRCUITS AUXILIAIRES ET DE COMMANDEVOLTAGE WITHSTAND TESTS ON AUXILIARY AND CONTROL CIRCUITSENSAYOS DE TENSIÓN SOPORTADA DE LOS CIRCUITOS AUXLIARES Y DE MANDO
Appareil de mesure – test equipment N° de série – serial number Calibration date Observations
Appl ication d’une tension d’essai de kV (valeur ef ficace) pendant s, entre la f il erie et le bât i. Application of a test voltage of ________ kV (rms value) for ____ s, between wiring and the base.
Aplicación de una tensión de ensayo de kV, (valor eficaz) durante s, entre la cableria y la base.
Les moteurs et les équipements, déjà essayés con formément à leur propre spécification, ont étédéconnectés pendant ces essais.The motors and equipments tested previously in accordance with their own specification weredisconnected during these tests.Los motores y equipos sometidos anteriormente a ensayos de acuerdo con sus especificaciones propiasfueron desconnectados durante estos ensayos.
MESURAGE DE LA RÉSISTANCE DU CIRCUIT PRINCIPALMEASUREMENT OF THE RESISTANCE OF THE MAIN CIRCUITMEDICIÓN DE LA RESISTENCIA DEL CIRCUITO PRINCIPAL
Appareil de mesure – test equipment N° de série – serial number Calibration date Observations
Courant continu d’essai Température au moment des essaisTest direct current 100 A Temperature at testing time ________ °CCorriente continua de ensayo Temperatura al momento de las pruebas
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VÉRIFICATION DE LA PRESSION DU GAZGAS PRESSURE CHECK MPa COMPROBACIÒN DE LA PRESIÒN DEL GAS
Appareil de mesure – test equipment N° de série – serial number Calibration date Observations
Al ti tude Pression barométr ique Température Altitude ______ m Barometric pressure ______ hPa Temperature ______ °C
Altitud Presión barométrica Temperatura
Pression absolue / Absolu te pressure / Pressión absoluta
Mesurage de la pression de remplissageFilling pressure measurementMedición de la presión de llenado
______
Valeur calculée équivalente à 20°C en MPa absolueEquivalent computed values at 20°C in MPa absoluteValores computados equivalentes para 20°C en MPa absolutos
______
Pression relative / relative pressure / Pressión relativa At 20°C and 1013 hPa
Mesurage de la pression de remplissageFilling pressure measurement
Medición de la presión de llenado ______
Valeur calculée équivalente en MPaEquivalent computed values in MPaValores computados equivalentes en MPa
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CONTRÔLE DU DENSIMÈTRE DE SURVEILLANCE DE LA PRESSION DE SF6 (pression relat ive en Mpa)SF6 GAS PRESSURE MONITORING DENSIMETER INSPECTION (relative pressure in Mpa)COMPROBACIÓN DEL DENSIMETRO DE VIGILANCIA DE LA PRESIÓN DE SF6(pression relativa en Mpa)
Température Pression barométrique Temperature ________ °C Barometric pressure ________ hPaTemperatura Presión barométrica
Unité de mesure de pression des seuils :Thresholds pressures measurement unit : MPa
Unità de medición de las presiones de los umbrales :
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ESSAIS DE FONCTIONNEMENT MÉCANIQUE DURÉES DE FONCTIONNEMENTMECHANICAL OPERATING TESTS OPERATING TIMES msENSAYOS DE FUNCIONAMIENTO MECÁNICO TIEMPO DE OPERACIÓN
Appareil de mesure – test equipment N° de série – serial number Calibration date Observations
Tension d’alimentation sur le site.Supplyvoltage on site ____ V(____)Tensión de alimentación sobre el sitio
PôleP1
Polo
PôleP2
Polo
PôleP3
Polo
Avec c ont acteurWith contactorCon contactor
c _____ _____ _____Manœuvre de fermetureClosing operationManiobra de cierre Sans contacteur
Without contactorSin contactor
sc _____ _____ _____
voie 1way 1via 1
c _____ _____ _____Manœuvre d’ouvertureOpening operationManiobra de apertura voie 1
way 1
via 1
sc _____ _____ _____
voie 2way 2via 2
c _____ _____ _____Manœuvre d’ouvertureOpening operationManiobra de apertura voie 2
way 1via 1
sc _____ _____ _____
C _____ _____ _____Cycle de manœuvre de fermeture-ouvertureClose-open operating cycle : COCiclo de maniobras de cierre-apertura
O _____ _____ _____
Durée de fermeture-ouvertureClose-open timeTiempo de cierre-apertura
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MESURAGE DES ÉCARTS DE SIMULTANÉITÉCOINCIDENCE DEVIATION MEASUREMENT msDICIÓN DE LAS DIFFERENCIAS DE SIMULTANEIDAD
FermetureClosingCierre
______
Ouverture voie 1Opening way 1
Apertura via 1 ______
Entre pôlesBetween poles
Entre polosOuverture voie 2Opening way 2 Apertura via 2
______
MESURAGE DES DURÉES DE FONCTIONNEMENT DES CONTACTS AUXILIAIRESMEASUREMENT OF AUXILIARY CONTACT OPERATING DURATIONS msMEDICIÓN DE DURACIONES DE FUNCIONAMIENTO DE LOS CONTACTOS AUXILIARES
Type de contactContact type
Tipo de contacto
ms
52 b ______ Manœuvre de fermetureClosing operationManiobra de cierre 52a ______
52b ______ Manœuvre d’ouvertureOpening operationManiobra de apertura 52a ______
MESURAGE DES DURÉES DE RÉARMEMENT DE L’ORGANE DE COMMANDEMEASUREMENT OF OPERATING MECHANISM RECLOSING DURATIONS sMEDICIÓN DE DURACIONES DE REARME DEL ORGANO DE MANIOBRA
Durée de réarmement après un CReclosing duration after one CDuración de rearme despues de una C
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SKG – MKG (1 & 2) – IKG
ESSAIS DE FONCTIONNEMENT MÉCANIQUE DURÉES DE FONCTIONNEMENTMECHANICAL OPERATING TESTS OPERATING TIMES sENSAYOS DE FUNCIONAMIENTO MECÁNICO TIEMPO DE OPERACIÓN
Tension d’alimentation sur le siteSupply voltage on site ______ V ______ Tensión de alimentación sobre el sitio
SKG
Manœuvre de fermetureClosing operationManiobra de cierre
______
Manœuvre d’ouvertureOpening operationManiobra de apertura
______
MKG (1)
Manœuvre de fermetureClosing operationManiobra de cierre
______
Manœuvre d’ouvertureOpening operationManiobra de apertura
______
MKG (2)
Manœuvre de fermetureClosing operation
Maniobra de cierre ______
Manœuvre d’ouvertureOpening operationManiobra de apertura
______
IKG
Manœuvre de fermetureClosing operationManiobra de cierre
______
Manœuvre d’ouvertureOpening operationManiobra de apertura
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SKG – MKG (1 & 2) – IKG
ESSAIS DE FONCTIONNEMENT MÉCANIQUE DURÉES DE FONCTIONNEMENT DES CONTACTS AUXILIAIRESMECHANICAL OPERATING TESTS OPERATING TIMES AUXILIARY CONTACTENSAYOS DE FUNCIONAMIENTO MECÁNICO TIEMPO DE OPERACIÓN DE LOS CONTACTOS AUXILIARES
Type de contactContact type
Tipo de contacto
Durée Duration
Duración 52 a ______
SKG
Manœuvre de fermetureClosing operationManiobra de cierre 52 b ______
52 a ______ Manœuvre d’ouvertureOpening operationManiobra de apertura 52 b ______
52 a ______
MKG (1)
Manœuvre de fermetureClosing operationManiobra de cierre
52 b ______
52 a ______ Manœuvre d’ouvertureOpening operationManiobra de apertura 52 b ______
52 a ______
MKG (2)
Manœuvre de fermetureClosing operationManiobra de cierre 52 b ______
52 a ______ Manœuvre d’ouvertureOpening operationManiobra de apertura 52 b ______
52 a ______
IKG
Manœuvre de fermetureClosing operationManiobra de cierre 52 b ______
52 a ______ Manœuvre d’ouvertureOpening operationManiobra de apertura 52 b ______
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POSITION DU TUBE DE CONTACT PAR RAPPORT À LA COUPURE ALIMENTATION ÉLECTRIQUECONTACT TUBE POSITION WHEN POWER SUPPLY SWITCHED OFFPOSITIÓN DEL TUBO DE CONTACTO AL CORTE DE LA PROVISIÓN ELECTRICA
Pôle/Pole/ Polo Pôle/Pole/Polo Pôle/Pole/Polo 1 2 3
critère/criteria/criterio :Fermeture côté fixeClosing fixed contact side ______ mm ______ mm ______ mm (10,6 mm – 18,6 mm)Cierre lado del contacto fijo
Fermeture côté mobileClosing mobile contact side ______ mm ______ mm ______ mm (20,4 mm – 28,4 mm)Cierre lado del contacto mobil
MESURE EN FERMETURE / MEASUREMENT ON CLOSING OPERATION / MEDIDA EN CIERRE
côté mobile/mobile side/lado mobil côté fixe/fixed side/lado fijo
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Servicio de calidad RELACIÓN DE ENSAYOS ANTES DE LA PUESTA EN SERVICIO Página
EB3 90 020-D24 RES 337 003 28/03/2011N° d’Instruction Indice Date de révision
CONTRÔLE DES TRANSFORMATEURS DE TENSIONCHECK OF VOLTAGE TRANSFORMERS
CONTROL DE LOS TRANSFORMADORES DE TENSIÓN
Après tous les contrôles de foncti onnement, relever et noter les n° d’identi fication fournisseur et n° de sér ie.
After all the mechanical operating tests, take and write down the supplier identification number and sérial number.Despues de todos los controles de funccionamiento, anotar los numeros de identificacion del provedor y numeros de serie.
Côté fixe (côté transformateur)Fixed part side (transformer side)Contacto fixo (lado transformator)
Côté mobile (côté générateur)Mobile part side (generator side)Contacto mobilo (lado generador)
NB : TP1/VT1 : montés à gauche, vus de l’extérieur de la gaine (en se plaçant du même côté que les équipements en question)put on the left, seen from outside the enclosure (when watching from the same side than mentioned equipments)instalados a la izquierda, mirando del exterior de la envoltura (poniense del mismo lado de los dichos equipos)
TP2/VT2 : montés à droite, vus de l’extérieur de la gaine (en se plaçant du même côté que les équipements en question)put on yhe right, seen from outside the enclosure (when watching from the same side than mentioned equipments)instalados a la derecha, mirando del exterior de la envoltura (poniense del mismo lado de los dichos equipos)
Service Qualité RAPPORT D’ESSAIS AVANT MISE EN SERVICE Page Quality Department COMMISSIONING TEST REPORT 16/17
Servicio de calidad RELACIÓN DE ENSAYOS ANTES DE LA PUESTA EN SERVICIO Página
EB3 90 020-D24 RES 337 003 28/03/2011N° d’Instruction Indice Date de révision
Mettre un * si TP doubles montés en parallèle au primaire et série au secondairePut a * if dual VT intalled with primary in parrallel and secondary in serialPoner un *si transformador de Tension doble en parallelo al primario y en serie al segundario.
CONTRÔLE DU CÂBLAGE DES TRANSFORMATEURS DE TENSIONCHECK OF VOLTAGE TRANSFORMER WIRINGCONTROL DEL CABLEADO DE LOS TRANSFORMADORES DE TENSIÓN
Contrôle selon instruction ALSTOM réf. QDA 20 095Test procedure according ALSTOM doc. ref. QDA 20 095Controles seg ńa procedura ALSTOM ref QDA 20 095
Tension primaire (bornes A, N):Primary voltage (terminals A, N) ______ VoltTensión del primario (bornas A, N)
Tension secondaire/tertiaireSecondary / tertiary voltage ______ VoltTensión del segundario/terciario
Côté transformateur /Transformer sideLado del transformador
Côté générateur /generator sideLado del generador
VT1 VT2 VT1 VT2
Pole1 Pole 2 Pole 3 Pole1 Pole 2 Pole 3 Pole1 Pole 2 Pole 3 Pole1 Pole 2 Pole 3Calcul ratio transformateur de tension / Transformer ratio calculation/cálculo relación transformador de tensión secondaire /secondary/segundario N1
(bornes1a, 1n ou a, n) /(terminals 1a, 1n or a, n) /(bornas 1a, 1n o a, n) secondaire /secondary/segundario N2
Service Qualité RAPPORT D’ESSAIS AVANT MISE EN SERVICE Page Quality Department COMMISSIONING TEST REPORT 17/17
Servicio de calidad RELACIÓN DE ENSAYOS ANTES DE LA PUESTA EN SERVICIO Página
EB3 90 020-D24 RES 337 003 28/03/2011N° d’Instruction Indice Date de révision
Côté transformateur /Transformer sideLado del transformador
Côté générateur /generator sideLado del generador
VT1 VT2 VT1 VT2
Pole1 Pole 2 Pole 3 Pole1 Pole 2 Pole 3 Pole1 Pole 2 Pole 3 Pole1 Pole 2 Pole 3
tertiaire /tertiary/terciaro
(bornes da, dn)(terminals da, dn)(bornas da, dn)
Cas des enroulements tertiaires cablés en série / Case of tertiary windings connected in series /Caso de los arrollamientos terciaros cableados en serie
Tension entre borne dn
pôle 1 et borne dn pôle 3(valeur égale à cellemesurée sur chaquetertiaire)Voltage between terminaldn pole 1 and terminal dnpole 3 (value equal to thevalue measured on eachtertiary)Tensión entre borna dn polo 1 y borna dn polo 3(valor identico al medidoen cada terciario)Tension entre borne dnpôle 1 et borne da pôle 3(valeur égale à zéro)Voltage between terminaldn pole 1 and terminal dapole 3 (value equal tozero)Tensión entre borna dn polo 1 y borna da polo 3(valor igual a cero))
Comparaison valeurs mesurées avec ratio caculéComparison between the measured values and the calculated ratioComparación de los valores medidos con la relación calculada.
Société par actions simplifiée au capital de 74.478.096 € Siège social: Immeuble Le Galilée – 51, esplanade du Général de Gaulle 92907 La Défense Cedex (France)
ALSTOM Grid SAS130, rue Léon Blum69611 VilleurbanneFrance
CA 400 321/3 03/10/2006 006 04/06/2011 1/5
N° d’Instruction- Instruction Date d’émission- Ist issue Indice- Revision Date de révision Page-Sheet Le présent document est à la propriété de ALSTOM.
Remis à titre confidentiel, il ne peut être communiqué à
des tiers ni utilisé ou reproduit qu’en stricte conformité
d’autorisations expresses préalables.
This document is the sole property of ALSTOM. It is
submitted on a confidential basis and may not be
passed on to third parties, used or reproduced except
in exact accordance with prior express permission.
Este documento es propiedad de ALSTOM. Se entrega
confidencialmente. No puede ser comunicado, utilisado
ni reproducido por terceros si no es en estrica
conformidad con autorizaciones expresas previas.
Critère d'AcceptationACCEPTANCE CRITERIA
CRITERIOS DE ACEPTACIÓN
QUALITÉ – QUALITY - CALIDAD
ÉMETTEUR - EMISOR : QUALITE MONTAGEQUALITY DEPARTEMENT SERVICIO CALIDAD 04/06/2011
N° CRITÈRE D’ACCEPTATIONACCEPTANCE CRITERIA NUMBER N° DE CRITERIO DE ACEPTACIÓN CA 400 321/3INDICE : 006
OBJET - TITLE :DISJONCTEUR FKG1X / XP / XV / XW A COMMANDE MECANIQUE FK3.12 - MONTAGE SITECIRCUIT BREAKER FKG1X / XP/ XV/ XW WITH SPRING MECHANISM FK3.12– SITE ERECTION DISYUNTOR MECANISMO FKG1X / XP / XV / XW CON RESORTES FK3.12 – MONTAJE EN EL SITO
ALSTOM Grid SAS130, rue Léon Blum69611 VilleurbanneFrance
CA 400 321/3 03/10/2006 006 04/06/2011 2/5
N° d’Instruction- Instruction Date d’émission- Ist issue Indice- Revision Date de révision Page-Sheet
VALIDITÉ – VALIDITY - VALIDEZ
DISJONCTEUR - CIRCUIT BREAKER – DISYUNTOR : FKG1X / XP / XV / XW
PRESSION SF6 - SF6 PRESSURE – PRESIÓN DE SF6 : Pre : 0,85 à 0,95 MPa (absolue)
COMMANDE : MÉCANIQUE FK3.12MECHANISM : SPRING MECHANISM FK3.12 MECANISMO : MECANISMO CON RESORTES FK3.12
DÉFINITION DES DURÉES
DURÉE DE FERMETURE :Intervalle de temps entre l'instantde mise sous tension du circuit defermeture et l 'instant où lescontacts se touchent dans tous lespôles.
DURÉE D'OUVERTURE : Intervallede temps entre l'instant de mise soustension du déclencheur et l'instant dela séparation des contacts d'arc surtous les pôles (ou des contacts dusimulateur commandés par lacharge fictive).
DURÉE DE FERMETURE-OUVERTURE : Intervalle de tempsentre l'instant où les contacts setouchent dans le premier pôlependant une manoeuvre defermeture, et l'instant où les contactsd'arc sont séparés dans tous lespôles pendant la manoeuvred'ouverture qui lui fait suite.
ÉCART DE SIMULTANÉITÉ ENTREPÔLES : Pour la même manoeuvre,différence de temps maximale entre
les instants où les contacts de pôlesse touchent à la fermeture etdifférence de temps maximale entreles instants de séparation descontacts des pôles à l'ouverture.
TIME DEFINITION
CLOSING TIME : Interval of time between energizing the closing circuit and the instant when the contacts touch in all poles.
OPENING TIME : Interval of time between the instant of energizing the opening release and the instant when the arcing contacts have separated in all poles (or simulator contacts controled by the dummy load).
CLOSE OPEN TIME : Interval of time between the instant when the contacts touch in the first pole during a closing operation, and the instant when the arcing contacts have separated in all poles during the subsequent opening operation.
DEVIATION BETWEEN POLES : For the same operation maximum deviation between the instants
when the poles contacts touch during the closing operation and maximum deviation between the instants when the poles contacts are separated during the opening operation.
DEFINICION DE TIEMPO
TIEMPO DE CIERRE : Intervalo de tiempo entre la energización del circuito de cierre y el momento en que los contactos se tocan en todos los polos.
TIEMPO DE ABERTURA : Intervalo de tiempo entre el momento en que se energiza la desconexión de abertura y el momento en que los contactos de arco se separan en todos los polos.
TIEMPO DE CIERRE - ABERTURA Intervalo de tiempo entre el momento en que los contactos tocan el primer polo durante una operación de cierre y el momento en que los contactos de arco se han separado en todos los polos durante la operación de abertura subsiguiente.
DIFERENCIA DE SIMULTANEIDAD ENTRE POLOS : Para la misma maniobra, diferencia de tiempo
máxima entre los instantes del encuentro de los contactos de los polos al cierre y diferencia de tiempo máxima entre los instantes de separación de los contactos de los polos al abertura.
ALSTOM Grid SAS130, rue Léon Blum69611 VilleurbanneFrance
CA 400 321/3 03/10/2006 006 04/06/2011 3/5
N° d’Instruction- Instruction Date d’émission- Ist issue Indice- Revision Date de révision Page-Sheet
DURÉES DE FONCTIONNEMENT (en ms à tension assignée)MECHANICAL OPERATING TIMES (in ms at rated voltage) TIEMPOS DE FUNCIONAMIENTO MECANICA (en ms a la tensión nominal )
DURÉES DES CHAMBRES - TIMINGS OF CHAMBERS – TEMPORIZACIONES DE CAMARAS
MANOEUVRE – OPERATION - OPERACIÓN MinimumMínimo
MaximumMáximo
Fermeture – Closing- Cierre 85 100Ouverture O1 - Opening O1 – Abertura ( bobina de disparo 1 ) 46 54Ouverture O2 - Opening O2– Abertura ( bobina de disparo 2 ) 46 54Ouverture O2 par bobine à minimum de tension
Opening O2 with minimum voltage coil – Abertura A2 con bobina a mínimo de tensión 57 83
RE 3000Fermeture par relais - Closing with relay Cierre con relé Allen Bradley 102 122
RE 3000Ouverture par relais - Opening with relay Abertura con relé Allen Bradley 62 76Fermeture de CO - Closing of CO - Cierre de CA 85 100Ouverture de CO - Opening of CO –Abertura de CA 72 87CO - CA 73 100
DURÉES DES CONTACTS AUXILIAIRES (en ms à tension assignée)TIMINGS OF AUXILIARY CONTACTS (in ms at rated voltage) TEMPORIZACIONES DE CONTACTO AUXILIARES (en ms a la tensión nominal)
TYPE DE CONTACT - MANOEUVRETYPE CONTACT – OPERATION TIPO DE CONTACTO - OPERACIÓN
MinimumMínimo
MaximumMáximo
Type a / Tipo a /Ouverture -Opening - Abertura) . 33 49Type b / Tipo b / Ouverture -Opening- Abertura 45 61
Type a / Tipo a /Fermeture de CO -Closing of CO - Cierre de CA 90 114Type b/ Tipo b /Fermeture de CO -Closing of CO - Cierre de CA 69 93Type a/ Tipo a /Ouverture de CO -Opening of CO - Abertura de CA 58 82Type b / Tipo b /Ouverture de CO -Opening of CO - Abertura de CA 74 92
DURÉE DE REARME FK3.12 (en s à tension assignée)CHARGING TIME FK3.12 (in s at rated voltage) TIEMPO DE CARGA DEL RESORTES FK3.12 (en s a la tensión nominal)
Tension Moteur en VMotor Voltage in V
Tensión motor en V
MaximumMàximo
Toutes – all - todos 12
DURÉE DE FONCTIONNEMENT IKG – MKG - SKG (en s à tension assignée)
MECHANICAL OPERATING TIMES IKG – MKG - SKG (in s at rated voltage) TIEMPOS DE FUNCIONAMIENTO IKG – MKG - SKG (en s a la tensión nominal)
Maximum - Máximo Tension Moteur en VMotor Voltage in V
Tensión motor en V Fermeture – Closing - Cierre Ouverture – Opening - Abertura
Maintenance plan of circuit --breaker(20000 guaranteed mechanical cycles)
Maintenancefrequency
Under normal operating conditions, the maintenance plan of circuit--breakermay be defined as follows :
Type ofexamination
Frequency Comment
Maintenancevisits
Once or twice a year
It is advisable to perform atleast 2 CO duty cycles peryear, when apparatus arescarcely used, in order tocheck that the circuit---breaker and associatedcontrol circuits are work-
ing properly.
Inspections Every five years
This necessitates circuit---breaker shutdown. It is notnecessary, however to dis-mantle interrupting chambersand other sub--assemblies.
Overhaul
Perform when one of the fol-lowing criteria is reached :
D operating time ≥ 20 years
D electric wear
D Service life for the motor---driven fans (if applicable) ≥
25,000 hours/fan
However, it is recommendedto proceed with inspection of the pole or circuit--breakerused the most, then to adaptthe maintenance programmefor the other breakersdepending on the resultsobserved.
Maintenance plan of disconnector (if applicable)(10000 guaranteed mechanical cycles)
Maintenancefrequency
Under normal operating conditions, the maintenance plan of disconnectormay be defined as follows :
Type ofexamination
Frequency Comment
Maintenancevisits
Once or twice a year
It is advisable to perform atleast 2 CO duty cycles peryear, when apparatus arescarcely used, in order tocheck that the disconnec-tor and associated controlcircuits are working prop-
erly.
Inspections Every five years This necessitates disconnec-
tor shutdown.
Overhaul
Perform when one of the fol-lowing criteria is reached :
D operating time ≥ 20 years
However, it is recommendedto proceed with inspection of the pole or disconnector usedthe most, then to adapt themaintenance programme forthe other apparatus depend-ing on the results observed.
Maintenance plan of earthing switch (if applicable)(10000 guaranteed mechanical cycles)
Maintenancefrequency
Under normal operating conditions, the maintenance plan of earthing switchmay be defined as follows :
Type ofexamination
Frequency Comment
Maintenancevisits
Once or twice a year
It is advisable to perform atleast 2 CO duty cycles peryear, when apparatus arescarcely used, in order tocheck that the earthingswitch and associated con-trol circuits are working
properly.
Inspections Every five years This necessitates apparatus
shutdown.
Overhaul
Perform when one of the fol-lowing criteria is reached :
D operating time ≥ 20 years
However, it is recommendedto proceed with inspection of the pole or earthing switchused the most, then to adaptthe maintenance programmefor the other apparatusdepending on the resultsobserved.
Maintenance plan of starting disconnector (if applicable)(10000 guaranteed mechanical cycles)
Maintenancefrequency
Under normal operating conditions, the maintenance plan of starting discon-nector may be defined as follows :
Type ofexamination
Frequency Comment
Maintenancevisits
Once or twice a year
It is advisable to perform atleast 2 CO duty cycles peryear, when apparatus arescarcely used, in order tocheck that the starting dis-connector and associatedcontrol circuits are work-
ing properly.
Inspections Every five years This necessitates apparatus
shutdown.
Overhaul
Perform when one of the fol-lowing criteria is reached :
D operating time ≥ 20 years
However, it is recommendedto proceed with inspection of the pole or starting discon-nector used the most, then toadapt the maintenance pro-gramme for the other appara-tus depending on the resultsobserved.
` J J J Check SF6 pressure, (if the circuit breaker is supplied
with a permanent pressure gauge).
`
It is advisable to perform at least 2 CO duty cycles peryear, when apparatus are scarcely used, in orderto check that circuit--breaker and associated controlcircuits are working properly.
Caution DURING MAINTENANCE OPERATIONS ALL POSSIBLE SAFETY PRE-
CAUTIONS SHOULD BE TAKEN TO PROTECT PERSONNEL WORKINGON THE EQUIPMENT.
Reminder The inspection and overhaul operations described in this section should al-ways be performed with the apparatus isolated, in other words :
D main circuit “de-energized”,
D earthed at extremities rendering it both mechanically,
D electrically inoperative.
Caution IF THESE SAFETY INSTRUCTIONS OR THOSE IN FORCE ON THE SITEWHERE EQUIPMENT IS BEING INSTALLED ARE IGNORED, THE PER-SONNEL MAY BE ENDANGERED.
Operations D perform, locally, an opening operation of the circuit-breaker,
D perform, locally, an opening operation of the disconnector,
D Check the open position of the starting disconnector (where applicable),and that the cable(s) connected to its terminals is de-energized and earthed.
D close the earthing switch(es) (where applicable),
D de-energize the monitoring control’s electric circuits,
D earth live parts using the earthing rods, to discharge the capacitor, touchthe main area with an earthing.
During certain operations, removal of the cover is indispensable.
The covers should be placed with enclosures, separately and on a flat surfa-ce.
Caution GAS-PRESSURIZED ELEMENTS ARE EXPOSED TO AIR WHEN THECOVER IS REMOVED.
General conditionof the apparatus
The apparatus should be subjected to visual inspection. If patches of corro-sion are found begin reconditioning of the affected parts.The table below gives the process respecting surface finish and protection :
Support Inspection Action
Galvanizedsteel
Oxidized parts
D Thorough brushing of oxidizedparts.
D Degreasing with solvent.
D Application of a coat of zincpaint.
Paintedgalvanized
steelor
paintedaluminium
alloy
Light scratches
D Thorough degreasing with sol-vent.
D Application of a coat of lacquerusing a brush.
Deep scratchesor flaking
D Scouring of paint surface with
emery paper 400.D Thorough degreasing with solv-ent.
D Application of a coat of primer,then drying for 24 h.
D Application of a coat of polyure-thane lacquer using a brush.
Products used :
D RUMCOAT EEVA primer by DERIVERY ref. 333103.
D Polyurethane lacquer 780by DERIVERY, ref. depending on color of equip-ment.
Detail of circuit--breaker maintenance operations, continued
Operation counter Read indications given by the counter(s) and note these on the inspection
sheet ”Maintenance visits”.The number of circuit--breaker operations recorded influences future mainte-nance operations.
SF6 pressure gas For a circuit--breaker equipped with a ”dial--type” SF6 gas densimeter, checkthe position of the needle.
See the module “SF6 gas monitoring”.
DILO STAUBLI
NOTE : If observation confirm ”topping up” information, proceed asmodule ”Filling with SF6 gas”, or in the case of abnormally low pres-sure, find the origin of the leak and contact ALSTOM Grid S.A. Cus-tomer.
Operating device Air--vents should be clean, free of dust and unobstructed. If necessary cleanusing a solvent.
Make sure that the permanent resistors areworking properly by checking thatthese give off heat and that there are no overheating marks (a zone notoriousfor this).For thermally controlled resistors, check that energizing and de--energizingtakes place correctly at voltage supply terminals by means of a thermostat(recommended thermostat temperature : +5°C).If necessary, change resistors found to be defective.
Detail of circuit--breaker maintenance operations, continued
Condition of crontrol
rod system
Check presence and condition of retaining clips and spacer washers on the
axles of the control rod/crank assembly.During all dismantling of the control rod assembly, replace the retaining clipsremoved by new ones of the same type. For correct orientation of clips seesection entitled : “ERECTION”.
Electrical densimeterthresholds
Check the electrical contact SF6 densimeter thresholds.If the values found are outside required tolerances replace the densimeter.
Operating times ofpoles and auxiliary
contacts
Measure the operating times of poles and auxiliary contacts, following proce-dure in section entitled : ”PRE-COMMISSIONING INSPECTIONS”.If the values found are outside those given in the document ”Acceptation Cri-teria” contact ALSTOM Grid S.A. Customer Service.
Measurement of con-tact resistance
see section “MESUARING MAIN CIRCUIT RESISTANCE”This operation must be performed for thefirst time at factory, the values foundare taken as a reference to judge how the apparatus evolves with time.
CAUTION : BEFORE ANY MEASUREMENTS ARE TAKEN IT IS ABSO-LUTELY NECESSARY THAT THE APPARATUS BE ELECTRICALLY ANDMECHANICALLY INOPERATIVE.
Tightening ofmountings
Check and adjust, with a torque wrench, the tightening torques of screws onsub--assemblies not subjected to gas pressure. The tightening torques aregiven in paragraph ”Tightening torques”.
TighteningLV terminals
With the electric cubicle out of service, check that the connectors and tips of conductors are tightened correctly and check the torque of connection mount-ings.Tool used : 4 mm diameter screw driver , for terminals of the ”Entrelec” type(for example).
CAUTION : SCREWS ON TERMINALS MUST NOT BE OVER--TIGHT-ENED.
Relay operation Check relay operation by executing the following circuit--breakersequences :
Detail of circuit--breaker maintenance operations, continued
Insulating envelopes Check the condition of insulating envelopes, these should be free from impact
marks, splintering, cracks, dust deposits, pollution etc...If necessary, clean these using a dry rag.If anomalies are found contact :ALSTOM Grid SA, Customer Service in order to change thedefective parts.
Interruptingchambers
Check the condition of interrupting chambers. This operation necessitatescomplete dismantling of the interrupting chamber to gain access to the ele-mentsto be inspected andshouldobligatorily be performed by ALSTOM GridSA, Customer Service -- to be contacted before all operations of this kind,preferably at the maintenance planning stage.
Detail of circuit--breaker maintenance operations, continued
Changing the FK3--12 When carrying out the 10,000 cycle servicing the circuit breaker’s FK3--12
operating mechanism should be changed. This operation must be carried outby ALSTOM Grid S.A., Customer Services, who should be contacted priorto all interventions of this type during the planning phase.
Changingthe connectorRod assembly
When carrying out the 10,000 cycle servicing the circuit breaker’s connectorrod assembly should also be changed.This operation must be carried out by ALSTOM Grid S.A., Customer Ser-vices, who should be contacted prior to all interventions of this type duringthe planning phase.
Replacement of bea-ring motor--drivenfans(if applicable)
In case of anomaly in the state of the bearing of the motor--driven fans, con-tact:ALSTOM Grid S.A., Customer Service, in order to envisage changing thedeteriorated parts.
Detail of maintenance operations of disconnector, earthing switch and (or)starting disconnector (where applicable)
General condition ofequipment
To be dealt with during the foreseen circuit--breaker interventions.
Condition of controlrod system
Inspection of the control rod system will be performed at the same time as theforeseen circuit--breaker interventions.
Mechanical controlmechaism
Check condition of the mechanical control mechanism -- tightness of seals,moving parts, protection of the various elements...
Tightening ofmountings To be dealt with during the foreseen circuit--breaker interventions.
Relay operation To be dealt with during the foreseen circuit--breaker interventions.
Pole insulatingsupports
Check the condition of insulating supports ; these should be free from impactmarks, splintering, cracks, dust deposits, pollution etc...Clean with a dry rag.If anomalies are found on pole insulating supports, contact ALSTOM Grid
S.A. Customer Service.
Pole contacts These contacts are inspected with the cover removed, the disconnector de--energized and earthed ; this state is equallyvalid for the previous inspections.Measurecontactresistancebetween thedisconnector’s input andoutput ter-minals to appreciate how the condition of these contacts has evolved.Inspect silver-plating of contact fingers and tube no patches of copper shouldbe visible. If this is not the case, contact ALSTOM Grid S.A. Customer Ser-vice.
Operating times Measure operating times of poles and auxiliary contacts as explained in sec-tion entitled : “PRE-COMMISSIONING INSPECTIONS AND TESTS”.
If the values found are outside those given in the document “Acceptation Cri-teria”, contact ALSTOM Grid S.A. Customer Service.
Measurement of con-tact resistance
To be dealt with during the foreseen circuit--breaker interventions.
Replacing the earth-ing switch
In case of an anomaly following a guaranteed maximum overcurrent, contact:ALSTOM Grid S.A., Customer Service, in order to envisage changing thedeteriorated parts.Overhauling necessitates de--energizing the equipment.
Replacing the mechanical interruptor switch controls
Checking the direc-
tion of rotation
Note the supply voltage of motors on the operating mechanism terminals.
Conditions valid for mechanisms fitted to the earthing switch(es).
D Direction of operating mechanism rotation
-- Check that all keys required for unlocking are present.
-- Using the crank, place the operating mechanism in intermediary positionbetween fully open and fully closed.
-- Give an opening order locally by a brief impulse on the opening push--button situated in the control cubicle and interrupt IMMEDIATELY powersupplies to the motor and monitoring control.
Caution THE INTERRUPTION OF ELECTRIC POWER SUPPLIES MUST BE IM-
MEDIATE. IF THE APPARATUS OPERATES IN THE OPPOSITE DIREC-TION TO THE ORDER GIVEN : RISK OF SERIOUS DAMAGE TO EQUIP-MENT AND DANGER FOR PERSONNEL WORKING ON IT.
-- Check that the operating direction corresponds with the order given.
-- If the disconnector operates in the opposite direction to theorder given, ex-change two of the motor supply wires at arrival in the control cubicle.
D Operating
Check that the disconnector is operating correctly by performing a series of 5 opening--closing sequences by means of the local electric operating mecha-nism.
The table below gives the steps of the pressure gauge connection (tool) :
Step Action
1 Remove the plug (10).
2 Install the filling tool (14).
3 Undo the valve--cap (15).
4 Connect up the 0--1 MPa pressure inspection gauge (11) by meansof its tube (12).
14
15
11 12
10
Testing The table below gives the steps of densimeter testing :
Step Action Comment/Diagram
1 Connect a test lamp to the “Alarm
pressure for the insulation” paedensimeter threshold.
Connection to the terminal
block of the operating mecha-nism in accordance with theelectrical diagram.
2 Calculate the effective pressure atwhich the “Alarm pressure for theinsulation” pae contact switchesover -- corrected in keeping withtemperature and local atmospher-ic pressure.
Value pae see technical char-acteristics.
3 D Create a leak by pressing on thepressure inspection gauge valve(13), making sure that the contactswitches over at the previously
calculated value.
D Proceed in the same way tocheck the contact of “Minimalpressure for the insulation” pme.
11
13
If one of the thresholds doesnot comply with the specifiedvalue, replace the densimeter.
4 When the test is finished, discon-nect the tube of the pressure in-spection gauge. Put the valve--cap(15) back and remove the fillingtool (14). 14
10
15
5 Reinstall the plug (10), applying atightening torque of 4 daN.m, leaktightness is only guaranteed if
Introduction Special tooling is necessary for : commissioning, maintenance of the circuit--breaker or disconnector.
Only the tools and accessories specified on ordering are delivered. Commer-cially available tools (e.g. : spanners, torque wrenches, spirit levels...) are notsupplied.
In this module This module contains the following topics :
Process Prepare the contact surfaces, (grey tint areas of the elements above).
Refer to the procedure “Connection withpreparation of contact surfaces”, seesummary for reference (...31-50.),and to the procedure “Tightening torques”, see summary for reference(...31-001).
In this module This module contains the following subjects:
Subject Page
I -- Introduction 2
II -- General remarks 3
III -- Categories and treatment of the materials:1 -- Treatment of the SF6 gas2 -- Materials to be recycled3 -- Waste products to be destroyed by incineration4 -- Special wastes
During the elimination phase for a High Voltage gas insulated circuit
breaker, at the end of its service life, the quality of the treatment of wastesgenerated represents the essential environmental aspect.
This manual proposes, for each element of a High Voltage gas insulatedcircuit breaker, the recommended method of elimination for the variousmaterials it comprises, as well as any possible precautions to be taken.
The SF6 gas will be recycled in accordance with the recommendations of
the IEC 60480 Standard.
However, when recovering the SF6 gas, it is important to respect thefollowing precautions:
-- Weigh the recipients used before and after filling, so as to ensuretraceability of the weights recovered
-- For each recipient, carry out a measurement of the purity of the SF6gas and a search for the decomposition products (SO2, HF)
In case of absence of a local waste processing channel for the recycling of SF6, we recommend a return to our site in Villeurbanne, where we
propose reprocessing via our European service providers.
2 -- Materials to berecycled
Metals form the main constituent of a gas insulated substation.
The main types of metal making up a substation are:
-- Steel: steelwork structure, fasteners, electrical cubicle frames, etc.
-- Aluminium: moulded or mechanical welded enclosures, conductor bars,electrodes, etc.
-- Bolted fasteners, threaded rods, rating and name plates
-- Bare copper: electrical contacts, etc.
-- Insulated copper: electrical cable
It is important to separate these different metals when dismantling thesubstation at the end of its service life. In particular for small sub---assemblies made up of various materials.
In certain simple cases, it is sufficient to remove the fasteners ensuring theassembly and, in other cases, specific instructions shall be given.
The aluminium and copper elements must, under no circumstances,be mixed. Specific waste processing channels associated with thesematerials do not allow for perfect separation during their processing.
In cases where it is impossible to separate them, the componentmust be sent for incineration.
III -- Categories and treatment of the materials (contd.)
3 -- Waste products to
be destroyed byincineration
This type of waste includes the rest of the materials used in the
composition of a gas insulated substation, other than for a few veryspecific cases.
These waste products mainly include:
-- Parts in epoxy resin: insulating cone in the case of circuit breakers withinsertion resistance
-- Plastic parts loaded with glass fibre (insulating tubes, etc.)-- Seals and gaskets, rubber bands, roller bearings
-- Insulators (support or interrupting chamber) composites etc.
Where possible, we recommend that this type of waste be sent viaincineration channels with waste heat recovery.
4 -- Special wastes Certain elements, due to their function or the material constituting them,cannot be sent via a recycling or incineration channel.
They include the following components:
-- Insulating parts from the interrupting chamber
-- Absorbent molecular sieves
-- The active elements in electrical cubicles
-- Ceramic insulators (support or interrupting chamber) or those still calledporcelain, etc.
These waste products will follow specific channels and/or undergo certaintypes of processing.Precise instructions will be supplied for these types of components.
Introduction The SF6 gas contributes to the greenhouse effect:
The greenhouse effect is a natural phenomena, which by capturing a part of the infra--red rays reflected from ground to space, enables the Earth to havean average temperature of 15°C.
The most abundant gases, which participate in the creation of this green-house effect are Water Vapour, Carbon Dioxide, Methane. However, since thebeginning of the industrial era, Man has released gases into the atmosphere,which artificially increase the greenhouse effect.Even if Sulphur Hexafluoride (SF6) is only present in the environment in lowlevels, it creates a greenhouse gas, which has the capacity to absorb theinfra--red rays emitted by the Earth, which is 22,200 times higher than that of Carbon Dioxide.
N.B. : 1 kg of SF6 gas emissions are, thus, the equivalent of22,200 kg of Carbon Dioxide, which corresponds to the green-house effect gas waste released by a gasoline vehicle covering120,000 km.
SF6 gas is used in High--and Medium--Voltageswitchgear for its breakingandinsulation capacities.The SF6 emissions can be generated in the equipment manufacturing, opera-ting, maintenance and decommissioning processes. The losses are, either,accidental (equipment breakage),or structural (equipment’s leaktightness).Under no circumstances, SF6 gas should be released to the environment:
N.B. : In accordance with the International Kyoto Agreements,European Regulations on fluorinated gases and IEC 62271--303applicable standards (e.g.. IEC 61634, SF6 gas handling opera-tions (filling, recovery) must be carried out by trained and quali-fied personnel, using tools and procedures enabling gas releasesto be limited.
D Sulphur Hexafluoride (SF6) is a colourless, odourless and non--toxic gas.
D However, it is a gas, which does not maintain life.
This gas is heavier than air and the lower parts such as trenches or cabletroughs can contain a strong concentration of this gas, which could lead toasphyxia.
N.B. : The maximum permissible concentration on a workstation,assuming that people stay there 8 hours a day, 5 days a week,is 1000 ppm (i.e. 0.1%) of the volume. This very low level is astandard value for all non--toxic gases, which are not usuallypresent in the atmosphere.
Every recipient containing new SF6 gas should be labelled as indicatedbelow:
S 7/9 – Keep container tightly c losed in a well --
Used SF6 D Under the influence of electrical arcing, SF6 gas can be broken down intosub--products, which are more or less toxic and/or corrosive.
D Depending on their nature, these products can be irritant for the mucousmembranes, the respiratory tracts and the skin.
The SF6 decomposition products are brought to light, even when present invery low levels, by a strong pungent and sulphur odour.
Every recipient containing used SF6 gas should be labelled:Used SF6 gas will be stored in a pressurised, leak--tight container, which mustbe resistant to decomposition products (valves, connectors and piping inclu-ded) and will be regularly inspected in accordancewith thestandards in force.The maximum quantity of polluted gas stored on site will be defined in accor-
dance with the rules in force.
S 7/9 – Keep container tightly closed in a well-- ventilated
place.
S 20/21 – When using, do not eat, drink or smoke.
S 38 – In case of insufficient ventilation, wear suitable respi-
ratory equipment.
S 45 – In the event of an accident, contact a doctor imme-
diately (if possible show the doctor this label).
S61 -- Avoid release to the environment. Refer to special
Instructions / Safety Data Sheet.
S 63 – If inhaled, move the victim out of the contaminated
area and keep them still.
S 51 -- Use only in well ventilated areas.
(Contains used Sulphur Hexafluoride SF6)
R 26/27/28 – VERY TOXIC BY INHALATION, INCONTACT WITH SKIN AND IF SWALLOWED.
For all interventions, it is necessary to respect the following instructions:
In every zone where the SF6 is implemented
D It is forbidden to smoke, eat, drink or store food.
D Ventilation must be sufficient.
D It is forbidden to use a fuel engine.
D Individual protection must be worn, following the table below.
Individualprotection
SF6 Technicalgrade.
Pure SF6 andused gaswithout toxicproducts.
ConformingSF6 inclu-ding lowlevels of toxic pro-ducts .
Non--conforming SF6including toxic products.
SF6 (post--arcing).
Studies of the compart-
ment containing pollutedSF6.
Wearing of Gloves
Wearing of EyeProtection
Wearing of aSimple FaceMask
Wearing of aCartridge FilterFace Mask
Wearing of aCombination
N.B. : For the elimination, the individual protection is managed in HIW
D Furthermore, the personnel intervening on the equipment, must respect atminimum the following instructions : after draining gas,
-- Remove the SF6 decomposition products immediately after the openingof the equipment in order to avoid a chemical re--combination with water.
-- Ventilation must be sufficient.
-- Use an appropriate vacuum cleaner equipped with a dust filter and wipewith a clean, dry cloth.
-- Avoid shaking the cloth
-- Block the SF6 decomposition products (i.e. molecular sieve, cloth soiledwith a 3% sodium hydroxide solution during 24 h) and destroy as dangerouswaste.
D Avoid contact with soiled parts or dust (Individual Protection)
Soiled individual protection, soiled dusters, soiled molecular sieve, pollutedgas, must be destroyed as dangerous industrial waste. Polluted gas will beincinerated or recycled depending on its level of pollution.
D Transportation of SF6 gas is considered as a transportion of dangerousmaterials. It must be carried out in accordance with the regulations in force,especially the ADR Regulations in Europe (European Agreement concerningthe International Road Transport of dangerous materials).
D For each transport, each container must be labelled, the label must bevisible and be combined with a Health & Safety / Transportation label and aTransportation slip for dangerous materials must be drawn up.
D In the event of a transportation of SF6 gas containing toxic products(waste), the document for dangerous materials must include the ADR 2.2 TC classification with a Safety Plan. The combined label will be the following :
S 7/9 – Keep container tightly closed in a well-- ventilated place.
S 20/21 – When using, do not eat, drink or smoke.
S 38 – In case of insufficient ventilation, wear suitable respiratory equipment.
S 45 – In the event of an accident, contact a doctor immediately (if possible
show the doctor this label).
S 61 -- Avoid release to the environment. Refer to special Instructions / SafetyData Sheet.
S 63 – If inhaled, move the victim out of the contaminated area and keep themstill.
S 51 -- Use only in well ventilated areas.
(Contains used Sulphur Hexafluoride SF6)
R 26/27/28 – VERY TOXIC BY INHALATION, INCONTACT WITH SKIN AND IF SWALLOWED.
C -- C ORROSIVE T+ -- VERY TOXIC
LiquidGAS,
toxic,
corrosive,n.s.a.
USED SF6
SULPHUR
HEXAFLUORIDE
D Loading and unloading operations are carried out by trained and qualifiedpersonnel in accordance with the instructions in force.
dardsD IEC60376: Technical Quality specifications of Sulphur Hexafluoride(SF6)for use in electrical devices.
D IEC 60 480 : guidelines concerning the testing and treatment of SulphurHexaluoride (SF6) sampled on electrical devices and specifications concer-ning re--use.
D IEC 62 271--303 : high--voltage switchgear – use and handling operationsof Sulphur Hexafluoride (SF6) in high--voltage switchgear.
Introduction These maintenance directives incorporate measures for avoiding the hazards
involved in the application of SF6 gas to switchgear.Such directives are protective measures and recommendations for the userof SF6 switchgear.
Fundamentalrules
Instructions for performance of work on SF6 gas switchgear are given in theappropriate instruction manuals.Switchgear may only be opened after the preparations for scavenging havebeen completed.
In this module This module contains the following topics :
The table below gives the principle of evacuation of SF 6 gas apparatus and
precautions to take :
Step Action
1 De--energize apparatus, switch--off where applicable and earth.
2 Connect the servicing unit to the gas filling nipple by means of ahose and using an adsorber filter.
3 Remove the SF6 gas using the vacuum pump. Depending on thegas volume ; it can be stored for re--use as per indications of IECstandard.
4 Fill gas compartment if possible with nitrogen or dry compressed airat rated pressure and subsequently, discharge outdoors (if possiblethrough an adsorber filter).
Precautions to take At the time of the opening--up SF6 gas switchgear, take the precautions
below :
DSOpen--up SF6 switchgear only after the gas has been evacuated and thepressure inside the apparatus has been reduced to that of atmosphericpressure.
DSPut the ventilation system in operation or ensure that fresh air circulatesin some other manner when switchgear which contains decompositionproducts is opened (e.g. circuit--breaker).
DSWear suitable fresh air breathing apparatus if there is even the slightestpossibility that personnel working on the equipment could be put in dangerthrough inhalation of hazardous amounts of gas vapor from powderydecomposition products.
DSWear special overalls when working on opened--up SF6 switchgear whichcontains powdery decomposition products. After completing work removeoveralls.
DS Avoid stirring--up dust and powder from SF6 switchgear. Difficult to removedust can be removed with dry non--fibrous rags. A vacuum cleaner should beused to remove loose dust. Thevacuum cleaner filter should be able to retainsparticles of a least 1 m in size.
DS Items (such as rags, vacuum cleaner, throw--away--overalls, gloves, etc.)which come in contact with thedecomposition products must be collected andneutralized so that the dust cannot be transferred. Before getting rid of theseitems neutralize in a 3 percent soda solution for 24 hours. verify the degreeof neutralization after 24 hours. When soda is added, no bubbles should be
result. If there are bubbles repeat the neutralization.DSUnder all circumstances ensure that the decomposition products neithercome in contact with skin, eyes, clothes, nor that they are swallowed orinhaled. Pay special attention to cleanliness of body, clothes andwork--bench. Dust or powder that comes in contact with skin must be washedaway with plenty of water.It is advisable to wash face, neck, arms and hands with soap and plenty of water before work--breaks and after stoppage of work.
DS Avoid eating, drinking, smoking or storing eatables in rooms or outdoorsnear to opened SF6 switchgear which may contain arc--decomposed powder.
Reminder Pure, non--contaminated SF6 gas is non--poisonous. Electrical discharges
and fault--switching arcs will give rise to different grades of poisonousdecomposition products. In small amounts gaseous decomposition productsproduce -- within seconds and before any poisonous effects can take place-- warning symptoms, such as an unpleasant piercing odor, nasal, mouth andeye irritations, which enable working personnel to withdraw to safety. Soliddecomposition products (powdery residues from switching) can cause skinirritations. SF6 is about five times heavier than air, and in the absence of turbulence, results in the gas collecting just above ground level and causingsuffocation through a deficiency of oxygen.
Important
instructions
The table below recapitulates the important instructions to follow at the time
of handling of used SF6 gas and decomposition products :No. Instruction
1 As soon as an unpleasant, piercing odor from decomposition productsbecomes perceptible leave the substation room without delay. enterthe room only after thorough ventilation or when wearing suitableoxygen breathing masks (with filtering or fresh air device).
2 After disturbances, enter the substation room only after havingthoroughly aired the room or when wearing independent of ambient--air operating oxygen breathing masks, or alternatively, afterverifying by measurement that the ambient air contains at least 17%volume of oxygen, especially if, one has to reckon with theconcentration of SF6 in hazardous amounts.
3 Enter rooms located below, and connected with the substation--roomsafter thorough ventilation only, or when wearing oxygen breathingmasks which operate independent of the ambient--air, or alternatively,after having verified by measurement that the ambient air contains atleast 17% volume of oxygen.
4 Ensure that the room ventilation operates satisfactorily, whilstmaintenance work is being performed on SF6 switchgear (dischargingand filling of gas, opening and cleaning of equipment).
5 When working on opened SF6 switchgear protect skin against contactwith gas and avoid swallowing or inhaling of gas. Ensure body, clothingand work--bench cleanliness. Wear special work--overalls and aftercompletion of work discard latter.
6 Wash skin which comes in contact with powder deposits with plenty of water. Before work--breaks and after work wash face, neck, arms andhands thoroughly with soap and plenty of water.
7 Do not stir--up powder deposits resulting from arc--switching. Removesticky powder with dry rags. Use suitable vacuum cleaner withpaper--filter to remove loose powder. Discard used items andfilter--bags in such a manner that powder deposit does not spread.Before discarding neutralize used items.
8 Avoid eating, drinking and storing eatables in rooms with opened SF6