Index
Index1. Introduction2
2. Technical Information3
2.0 General3
2.1 Explosion Proof Motors Line (EEx-d) EEX-D8
2.2 Explosion Proof Motors with Increased Safety Terminal Box
(EEx-de) EEX-DE9
2.3 Increased Safety Motors Line (EEx-e) EEX-E10
2.4 Non Sparking Motors Line (EEx-n) EEX-N12
2.5 Certification13
3. Maintenance Instructions and Procedures14
3.1 General Information14
3.1.1 Disassembly14
3.1.2 Assembly15
3.1.3 Electrical details16
3.5 Motor assembly
3.6 Marking
4. Recommendations18
5. Services allowed and not allowed in EEx-d, EEx-de, EEx-nA and
EEx-eEEx-DEExEEX-NAEEx-E18
Appendix I: Engineering Documents-
Appendix II: Certification copies-
1. IntroductionWhen an electrical apparatus is installed in
areas where dangerous concentrations and quantities of flammable
gases, vapors or mists may be present in the atmosphere, protective
measures are to be applied to reduce the likelihood of explosion
due to ignition by arcs, sparks or hot surfaces produced either in
normal operation or under specified fault conditions. This manual
is part of other relevant materials, for instance, Manual of
Electric Motors and Manual of Installation and Maintenance of
Electric Motors, which must be used regarding each specific
situation.
WEG has a very large experience on electric motors application
and as a leader within the industry; we are manufacturer of one of
the widest available ranges of electric motors for operation in
hazardous atmospheres and hostile environments.All motors are of
the highest quality, built to the latest national and international
standards and certified by the relevant national authorities for
use in almost every country.
WEGs hazardous equipments are applied widely throughout the
world, in oil and gas companies, oil refineries, chemical works,
coal mines, safely and with high level of efficiency providing
power for long periods with minimum attention.
WEGs Inside of this manual you will get detailed data about WEGs
Explosion Proof, Increased Safety and Non-Sparking motors, in
addition you will know how to change these products, if you can
change or not, and how you identify product after change. Beside
some copies of certification and drawings will be added to this
document as a supplementary data.
WEGs Other information not available in this document must be
requested from the factory and it will be provided.
WEGs Technical Assistant must be responsible for all
modifications conducted in this kind of products mainly because can
generate injury and serious risks of life to people. We strongly
recommend a certified repair shop to do any change in hazardous
location products.
WEGs 2. Technical InformationAn atmosphere is considered
explosive when the amount of gas, steam, dust or fiber is such that
a spark originated from an electric circuit or an overheating from
an equipment may cause an explosion.
In reference to surrounding equipment, preventive constructive
measures are taken so as to avoid that the area around them is
flamed. This is obtained through several means such as eliminating
at least one of the substances necessary to generate an explosion
and/or a fire (air/ fuel / ignition source) or by manufacturing
enclosures capable to withstand inside eventual explosions.
/ / ACCORDING IEC STANDARDIECIEC Standard classifies risk areas
in zones and groups. IECZones are classified based on frequency and
the period of time that the explosive atmosphere is present.
The division in groups is made based on the aggressiveness of
the ambient
. ZONE CLASSIFICATION
Gases and VaporsZone 00Area where explosive atmosphere is
present continuously, or for long periods of timeFor this zone, it
is not allowed to use any type of electric motor. Exceptions may
occur only when analyzed by competent authority.
Zone 11Area where the probability of existing an explosive
atmosphere is associated with the normal operation of the
equipment. Ex d and Ex e type motors.DEX E
Zone 22Area where an explosive atmosphere will probably be
present under normal operating condition and, if any, it will be
for short period of time.Ex d, Ex e and Ex n type motors.EX DEn
ZONE CLASSIFICATION
DUSTSZone 2020Area where flammable dust is present continuously
or frequently under normal operating conditions in enough amount to
cause an explosive concentration of mixed dust with air and/or
areas where may occur excessive amount of dust with no further
control./
For this zone, it is not allowed to use any type of electric
motor. Exceptions may occur only when analyzed by competent
authority.
Zone 2121Area that is not classified as Zone 20. However, where
flammable dusts may occur under normal operating conditions in
enough amount to cause an explosive concentration of dust mixed
with the air20
Ex d and Ex e type motors. DEX E
Zone 2222Areas that are not classified as Zone 21. However,
where flammable dust may occur frequently and is present for shot
period of time or where the amount of dust may occur just under
abnormal operating conditions, then causing an explosive mixture.
21
Ex d, Ex e and Ex n type motors.EX DEn
GROUPS CLASSIFICATION
GROUPSMINESEquipment manufactured for under ground operation
mines
IMethane may be present (gris)gris
OTHERSEquipment manufactured for other types of industry
(surface industry), being subdivided based on the characteristics
of the materials present
IIAAcetone, ammonia, benzene, butane, butane, alcohol butyric,
ethane, ethanol, acetate of ethyl, gasoline, heptanes, hexanes,
natural gas, methanol, naphtha of oil, propane, propane, toluene,
enshrine, solvents in general
IIBAcetaldeide, cyclopropane, diethyl ether, ethane, monoxide of
carbonacetaldeide
IICAcetylene, butadiene, oxide of ethane, hydrogen, oxide of
propylene, gases containing over 30% of hydrogen30
ACCORDING CENELEC STANDARDCENELECCENECLEC has a different
criterion to determine groups and categories, as
follow:CENECLECGROUP I (MINES) I
GROUP II* (Surface Industries)II*
CATEGORIESZONE
1Equipment with high degree of protection.
Explosive atmosphere is present continuously or for long periods
of time.1G (gas)1G1D (dust)1D
0 (gas)020 (dust)20
2Equipment with high degree of protection. Explosive atmosphere
may occur occasionally.2G (gas)2G
2D (dust)2D
1 (gas)121 (dust)21
3Equipment with normal degree of protection. Explosive
atmosphere will probably not occur.3G (gas)3G
3D (dust)3D2 (gas)222 (dust)22
M1Equipment designed to operate on environments where the
explosive atmosphere is present frequently
M2Equipment that must be powered-off if there is any risk of
explosion. Explosive atmosphere is present occasionally.
ATEXATEX (ATmospheres EXplosives) is the European Directive
94/9/EC. It applies to all equipment either electrical or
mechanical used in hazardous atmospheres both dust and gas. The
Directive was introduced in 1994 and allowed a ten-year period for
introduction. ALL EQUIPMENT MANUFACTURED AFTER JULY, FIRST 2003
MUST COMPLY WITH ATEX.
94/9/EC19942003ATEXThe essential elements of ATEX involve:
Notified Bodies, Standards, Conformity Assessment, Marking and
Documentation. If provides a classification for motors in areas
containing explosive atmospheres. More than product specification,
the present Directive gives special attention to the production
process including design, production itself and sale. The system
certification is provided together with product certification.
This Directive establish some requirements as follow: Special
health and safety requirements referred to the design and
construction of the equipment and protection system to be used
specially in explosive atmospheres. Production assured quality
requirements. Verification of product conformance. Product
conformance based on type test Production assured quality
requirements. Required documentation to use the mark through
internal production control, without requiring type test and/or
Quality System requirement. / TEMPERATURE CLASSMinimum temperature
that causes an explosion of a gas, vapor of explosive mixture is
called ignition temperature. To avoid any risk of explosion, motor
surface temperature must always remain below the ignition
temperature of the explosive mixture. Internal and external surface
temperature of electric equipment must be strictly followed to
avoid ignition of an explosive mixture. So the equipment is
classified in classes of temperature as per table below.
Classification According Temperature
TEMPERATURE CLASS (C) MAXIMUM MOTOR SURFACE TEMPERATURE (C)
IGNITIONTEMPERATURE OF AN EXPLOSIVE
MIXTURE (C)
IEC/CENELECIEC/ CENELEC
T1450>450
T2300>300
T3200>200
T4135>135
T5100>100
T685>85
Hazardous location motor marking (example):
XXXX II 2 G EEx e II C T4 PTB 01 ATEX 3205
2.1 Explosion Proof Motors Line (EEx-d) 2.1EEX-DAn explosion
proof motor is an electric motor capable to withstand an internal
explosion pressure without break avoiding that this explosion do
not go to the environment. This is the oldest protection for
hazardous locations.
An induction electric motor (of any protection) is not totally
sealed, that is, air goes in and out of it. While in operation, it
becomes heated up and the internal air gets to a higher pressure
compared to external pressure (air is blown out); when motor is
switched-off, the internal pressure decreases, allowing in this way
entrance of air (which on this case is contaminated). EEx-d
protection will not allow that an internal explosion propagates to
the external environment. To ensure safety to the system, WEG
provides a control of the openings and the finishing of joints, as
they are responsible for the volume of gas exchanged between inside
and outside of the motor. ;EEx-DWEG EEx-d Motors main featuresEEx-D
Reinforced frames, Terminal box, endbells and bearing caps.
endbells Bigger contact between components Reduced clearance
between endbell and bearing caps to avoid flame propagationendbell
All components has been tested in Hydrostatic Pressure Test
Intermediate base is used between frame and terminal box Leads
bushing system multi-wire up to frame 200 and single-wire from 225
up to 355225200355 Flameproof theoryFlame path or metal surfaces
between explosion proof motors components need not be totally
closed to avoid the passage of a flame. This part of the motor must
be carefully handle avoiding scratches or risks that can eliminate
the gap that is dimensioned according to the gas or vapor in the
environment. Gases and vapors are divided into groups according to
experimental data that has been established to determine the
maximum experimental safety gap (MESG). In WEG electric motor it
will exist two different types of flame path, between frame and
endbell it will consist a long metal spigot joint fitting in a long
recess which will be normally clamped tight by the fixing bolts.
However it will exist a gap between bearing caps and shaft, with a
minimum distance that must be maintained, because motor cannot
exceed mandatory dimensions and must be capable to withstand an
internal explosion without propagate to the external
environment.
MESGWEGendbell
2.2 Explosion Proof Motors with Increased Safety Terminal Box
(EEx-de) 2.2EEX-DEMotors with this feature will aggregate features
of two lines; these motors will explosion proof structure, with
flame path, gaps, etc. guarantying protection against propagation
of flame to external environment and, additionally, will have a
terminal box with Increased safety features that means controlled
distances between live parts, internal distances in accordance with
standards and terminal block avoiding connection turnings. ;All
components applied are certified according ATEX. For frames 90 up
to 200 it will be used terminal blocks type KS, with a special
thread pin and special connectors. Motors from 225 up to 355 it
will be used special connectors individually, per lead, passing
through a basing plate. ATEX90200225355Foto ou desenhoOU
desenho
2.3 Increased Safety Motors Line (EEx-e) 2.3EEX-EThis protection
method is based on electric motor give an increased security
against he possibility of excessive temperatures, of the occurrence
of sparks and arcs during the service life of the equipment. It is
important to say that this is not an explosion proof motor, which
means that this equipment is not manufactured to withstand internal
explosion. They are designed to ensure safety by means of several
features such way that it will avoid sparks, arcs and excessive
temperature on components under all conditions of operation. They
are very similar to standard motors but have special connections
system (terminal blocks) and specific electrical design. EEx-e
Motors main featuresEEx-E Temperature rise 10 C bellow the maximum
temperature allowed for the insulation class10C Commitment with
time tE (maximum time to switch off through a protection device) tE
Terminal box and cables connection must be tightly connected
avoiding turning Mandatory external grounding on frame Frame must
be connected with terminal box grounding Aluminum fan Drip cover on
a vertical position application Reduced output x frame ratedx
Oversized terminal box on 63 up to 100 frame (same size as 112 and
132) 63100112132 Very special care during manufacturing the winding
with double impregnation layer Drain holes on endbell plugged with
M6 brass boltendbellM6 Maximum internal and external temperature
T3/T4T3/T4 Time tEtEThis is the time taken for winding when
carrying the starting current IA to be heated up from temperature
reached in rated service and at a maximum ambient temperature to
the limiting temperature. IAThe protection device to be applied
together with the motor must be designed to avoid any risk under
all types of operation. This protection device must operate,
without fault, not only on overload conditions, but also on locked
rotor conditions. On this way, the value of time tE must be such
that, when rotor is locked, motor must be switched-off by a
protection device that depends on the current, before time tE gets
to the end. tETE
O - Temperature at CA - Maximum ambient temperature (usually
40C)
B - Temperature at normal duty
C - Limit of temperature
1 - temperature at normal duty
2 - temperature during a failure or with locked rotor - CA- 40B-
C-C - 1 - 2 - On the chart above, the interval OA represents the
maximum ambient temperature, and OB is the temperature reached
under normal operating duty. In case there is any failure with
further rotor locking, the condition is represented on the interval
2 of the chart. The motor temperature increases quickly up to
interval OC, which must be shorter than motor classification
temperature T. So care must be taken to ensure motor is not
switched-off within time tE.OAOB2TTE
2.4 Non-sparking Motors Line (EEx-n) 2.4EEX-NThis type of
protection applies to electric equipment that do not cause ignition
of an explosion atmosphere under normal operating conditions. EEx-n
Motors main featuresEEx-NThe Ex n motor is built identically to a
regular TEFC motor with the following features: Terminal box
components as well as connection cables must be firmly fastened
(avoiding any movement) T3 classification according maximum
internal and external surfaceT3 Special terminal block Aluminum
fanIt will be seen that many of the above features are similar to
type e except that standard outputs are obtained from the motors,
i.e. no derating is involved. Because of these motors are used in
Zone 2 locations. E2
2.5 Certification2.5WEGs products are certified according
ATEX-100 by PTB and CESI, that gives us a support to have a product
manufactured with a very high level of quality and provide a good
solution for our customers. WEGPTBATEX100
3. Maintenance Instructions and Procedures 3General
informationThis manual is part of the new standards requirements
for European market for hazardous location equipments. Informations
that will be provided to the repair shops are: Certificate -
Drawings- Technical information - Data about equipment and work
conditions Assembly and disassembly instructions Restrictions to do
the job (just in case) Designation - Maintenance and repair manual
Bill of materialAspects relative to Maintenance for electric motors
in hazardous location area, considering REPAIRS, REWINDING AND
PRODUCT CHANGES to the EEx-d, EEx-de, EEx-e and EEx-n motors
line.
EEx-DEExEEX-EEEx-N3.1.1. Disassembly3.1.1 The motor must be
disassembled in a clean, dry and without dust place; ; Any dust,
oil, grease, etc. that could be on the motor must be cleaned with
cotton cloth and an adequate solvent; ;Disassembling Details Handle
tools rightly, make the disassembling of the motor parts without
hit any machined surface; ; The motor parts should be kept in a
clean area, with your respective tag number; ; Machined surface fit
parts (endbells, shaft, terminal box and frame) should be protected
against corrosion with protective oil; endbells; If you will not
change the bearings, they must be covered and protected against
dust and powder. To wash them, we recommend kerosene or grease
solvents like Aquamicro 5080, Arclean and so on; 5080
AquamicroArclean; The bearing lubrication should follow the table
1, added below: 1 The empty space into the bearing should be
accomplished by grease, as follow bellow: Type of BearingInitial
Amount of Grease (g) G
BALL
BEARINGS620912,50 ( 1,0
621117,00 ( 1,0
621223,00 ( 1,0
630924,00 ( 2,0
631140,00 ( 3,0
631250,00 ( 4,00
631476,00 ( 5,00
6316109,00 ( 6,00
6319176,00 ( 9,00
6322280,00 ( 28,00
CILINDRICAL
ROLLERNU217 39,00 ( 4,00
NU21961,00 ( 6,00
NU31456,00 ( 5,50
NU31680,00 (8,00
NU319128,00 (13,00
NU322200,00 ( 20,00
* Bearings above with steel cage. In case the bearing with brass
cage, the initial amount of grease is different of this quantity
showed above Please, call the Factory in this case. - The bearing
caps should be accomplished by grease until ;; WEG recommends and
uses the Polyrex EM grease Exxon. If this grease is not available,
we recommend a lithium base with a mineral oil grease of high
quality used; WEGPOLYREX EM - ; Check for any sight of hit or
damage on the rotor, shaft, frame and machined surfaces; ;3.1.2.
Assembly3.1.2 When assembly the motor, check the run out end shaft:
look at the procedures and the limits value showed below:
SHAFT DIAMETER
(mm) MAXIMUM RUN OUT
((m) M
STANDARD CLASS
D ( 1030
10 < D ( 1835
18 < D ( 3040
30 < D ( 5050
50 < D ( 8060
80 < D ( 12070
120 < D ( 18080
180 < D ( 25090
250 < D ( 315100
315 < D ( 400110
400 < D ( 500125
500 < D ( 630140
The lip seals must be changed after the covers been disassembly;
; The seal should be carefully assembled: The lips cant be damaged;
; Apply oil or grease on the contact surface between seal and
shaft; ; The seal should be assembled in the same plane of the
cover, in 90 degrees with shaft; 90; The shaft surface cant have
any mark or damage; ; The seal has a right position to be
assembled; ;
Motor with Taconite Seal: wash the taconite, check for some
problem (friction between the couple parts), regrease it, with the
same type of grease applied on bearing, and assembly again; ;
Warning: the taconite seal cant be assembled with friction between
their parts; ; The covers should be assembled carefully. A soft
hammer could be used. Never use a steel hammer straight to the
cover; ; Fix the screws (covers, bearing caps and terminal box)
alternately, cross way. These parts should be well screwed to avoid
any internal explosion reach the external environment;
;ScrewM3M4M5M6M8M10M12M14M16M20
Torque (Nm)Nm0,5 0,71 22,5 3,55 710 2020 3034 6053 8083 140160 -
300
Check the screw torque tight, values shown on table below:
Check, with a feeler gauge if the clearance between terminal box
and his cover doesnt exceed 0.05 mm; 0.05; When finished
assembling, turn the shaft to check any friction of any motor
parts; ; Before painting the motor, remove the original paint and
follow the painting how to recommended by WEG; WEG;3.1.3.Electrical
Details3.1.3.ElectricalRewinding The stator may be warmed until
150C before removes the coils. You can use some special solvents to
make this operation easily (WEG CHEMICAL has a solvent called
LACKSOLVE 13). 150WEGLACKSOLVE13
Impregnation varnish can be softened with diluents. Also is
possible to warm winding, if this process does not harm insulation
among lamination. Special care musts be adopted, with manufacturer
consult, when it is equipment type e with temperature class T4.
This because an increase on core losses that can affect
constructive features to the protection increased safety (for
instance, time tE). ET4TE The stator should be carefully checked,
checking for any problem in: Winding; Terminal box; ; Insulation
material; ; Insulation resistance (minimum of
100M();100M;VALUESINSULATION
RESISTANCE
EQUAL OR UP TOLESS THAN
-2DANGEROUS
250BAD
50100PROBLEM
100500GOOD 1) 1
5001000VERY GOOD
UPPER THAN 10001000EXCELENT
1) Minimum value to accept the motor If rewinding is needed
following procedures must be taken, same as standard motors, paying
attention: WEG recommendations must be followed regarding winding
data. Changes can not be done since a surface temperature can
become higher than original design and overcome the class
temperature limit (T3 or T4); - WEGT3T4; Insulation material must
be applied according temperature class insulation of the motor; -
Insulation material, terminal leads and protection devices must be
certified by a notified body (CESI, PTB, ETC.) Frame warming can be
done in a furnace with temperature not over 150C; - 150; Stator
cleaning process must be avoided slot damage; - ; WEG explosion
proof motors are provided with thermistors, which are installed on
opposite side of ventilation, on winding. This device provides
better safety on motor operation, besides not be mandatory by
standards their application. WEG Change the thermistor when the
rewinding. Install it on the opposite side of fan (DE coil), on the
head of the coil, before varnish impregnation; ;
Electrical Tests After Rewinding: Measure the resistance on
ambient temperature (doing the rightly corrections); ; Measure the
insulation resistance in 500V: Insulation resistance minimum of
100M();500V100M; Hi-pot test against standard; - ; Current without
load should be measured and compared with the manufacture value; ;
Check the resistance of phases and evaluate the difference between
phases : - Higher value than three phases resistance - 1 ( X 100) (
3%
Lower value than three phases resistance
- 11003 Check the difference of current between phases: DI = (
DMD / MTF ) x 100=DMD/ MTF100Where: DI = Difference of
currentDI=DMD = Maximum difference between ones phase current and
medium current DMD=MTF = Medium of the three phase current
MTF=Motors IV, VI e VIII poles, this difference should be less than
10% (DI ( 10%).1010Motors II poles, this difference should be less
than 20% (DI ( 20%).2020Exemplo : Motor 10CV, IV plos,
220/380V10CV4P220/380V I1 = 15 A I2 = 12 A I3 = 11 A
MTF (medium current of three phases) = (I1 + I2 + I3) / 3 = (15
+ 12+ 11) / 3
MTF=I1 + I2 + I3/ 3=15+12+11/ 3MTF = 12,6 A MTF=12,6DMD = I1 MTF
= 15-12,6 = 2,4 A DMD= I1 - MTF=15-12,6=2,4DI = ( 2,4 / 12,6 ) X
100 = 19% ( the motor or the voltage supplier has a
problem!=2,4/12,6100=19 If its possible, add to the tests above:
Turn on the equipment on the nominal speed; ; Measure the vibration
and noise level; ; Nominal current with rotor locked: apply low
voltage on the winding the way that the current will be the
nominal; - ;Tests after repair: Resistance measurement on ambient
temperature, observe usual symmetry. - Insulation resistance in 500
VCC not bellows 20 M with a nominal voltage until 600 V. - 500
VCC20M600 V High pot test according standard. - Nominal current
with nominal voltage must be compared with manufacturer data and
must be symmetric on usual levels. - Electric motors must be
submitted, if possible, to the following additional tests: - -
Stator winding and its connections Insert temperature sensors in
winding before impregnation . - Nominal speed operation and
eliminating noise and vibration not permitted. Locked rotor test,
applying reduced energy, such way that get full load current. -
Check phase symmetry. -
Vibration Test: Conditions: Without load on the motor; ; With a
half key on the shaft drive end; ; The motor must be tested on a
special base; ; Measure the vibration level, RMS mode, as on the
follow pointsRMS Compare the maximum value measured with the table
showed below: This maximum value should be lesser than the level
showed on the table. If one of the points measured were higher than
the table, the motor has a problem and must be checked.
TIPE OF BASE TIPEFRAMESCHARACTERISTICS
MAXIMUM WEIGHT
OF BASEMOTOR WEIGHT ALLOWED
EspumaIEC 63 a 800,6 kg6 kg18 kg
EspumaIEC 90, 1121,8 kg18 kg70 kg
BorrachaIEC 132, 2005,6 kg56 kg314 kg
BorrachaIEC 225 a 35533 kg330 kg1300 kg
QUALITY OF BALANCINGSPEED
(rpm) MAXIMUM VALUE OF VIBRATION (mm/s) mm / s
Frame 56 to 13256132Frame 160 to 225160225Frame 250 to 355
250355
N (Standard) N600 ( n ( 18001,82,83,5
1800 < n ( 3600
R (reduzido)600 ( n ( 18000,711,121,8
1800 < n ( 36001,121,82,8
S (Special)S600 ( n ( 18000,450,711,12
1800 < n ( 36000,711,121,8
4. Recommendations 4( In case of change some motor component:
use only original parts from WEG. WEG( In case of change some
screw, keep the original resistance class 12,9. 12,9( Its forbid
recovery any part of EEx-d and EEx-de motors like endbells, shafts,
bearing caps, and so on. EEx-DEExendbells( Parts of EEx-d and
EEx-de motors cant be sold to the end customer or another Repair
Shop doesnt allowed to maintenance these kind of equipments.
EEx-DEEx5. Services Allowed and Not Allowed in EEx-d, EEx-de,
EEx-nA and EEx-e 5EEx-DEEx-DEEx-IAEEx-ETables bellow will show what
a repair shop can do or can not in certified products, according
all technical aspects listed previously. If any doubt exist this
you have to contact WEG Service in the plant to clarify before
start the job. WEGActivities to repair motors applied in hazardous
locationsITEMREPAIR DESCRIPTION Motors Ex d / Ex de -/ CAN CAN
NOT
01Complete rotor balancingX
02Replace complete rotorX
03Reallocate stack lengthX
04Rewind stator (original winding) X
05Rewind stator (different winding from original) X
06Replace shaftX
07Weld shaftX
08Fan balancingX
09Replace fanX
10Apply different stack from the original (lamination, length)
X
11Replace bearingsX
12End bells bushingX
13Change painting planX
14Change colorX
15Replace end bellsX
16Change bearing sealing deviceX
17Additional shaft threads machiningX
18Terminal box Thread machiningX
19Change degree of protectionX
20Replace terminal boxX
21Replace terminal blocks/pins/X
22Change nameplateX
23Change type of protection (Ex d to Ex de) / X
24Turn T. Box 90o x 90o90x90X
25Change grease bearingX
26Change mountingX
27Replace insulation material classX
28Replace auxiliary components (PTC, PT100 and heaters)
PTCPT100X
29Replace boltsX
30Vibrations sensor installX
31Install canopyX
32Change lubrication systemX
33Run out correctionX
34Add auxiliary componentsX
35Intermediate base changes/Add more threads/X
36Install a intermediate base kitX
37Replace leads bushingX
Activities to repair motors applied in hazardous
locationsITEMREPAIR DESCRIPTION Motors Ex nA - CANCAN NOT
01Complete rotor balancingX
02Replace complete rotorX
03Reallocate stack lengthX
04Rewind stator (original winding) X
05Rewind stator (different winding from original) X
06Replace shaftX
07Weld shaftX
08Fan balancingX
09Replace fanX
10Apply different stack from the original (lamination, length)
X
11Replace bearingsX
12End bells bushingX
13Change painting planX
14Change colorX
15Replace end bellsX
16Change bearing sealing deviceX
17Additional shaft threads machiningX
18Terminal box Thread machiningX
19Change degree of protectionX
20Replace terminal boxX
21Replace terminal blocks/pins/X
22Change nameplateX
23Change type of protection (Ex d to Ex de) X
24Turn T. Box 90o x 90o90x90X
25Change grease bearing X
26Change mountingX
27Replace insulation material classX
28Replace auxiliary components (PTC, PT100 and
heaters)PTCPT100X
29Replace boltsX
30Vibrations sensor installX
31Install canopyX
32Change lubrication systemX
33Run out correctionX
34Add auxiliary componentsX
35Install an additional Terminal BoxX
Activities to repair motors applied in hazardous
locationsITEMREPAIR DESCRIPTION Motors Ex e - CAN CAN NOT
01Complete rotor balancingX
02Replace complete rotorX
03Reallocate stack lengthX
04Rewind stator (original winding) X
05Rewind stator (different winding from original) X
06Replace shaftX
07Weld shaftX
08Fan balancingX
09Replace fan X
10Apply different stack from the original (lamination, length)
X
11Replace bearingsX
12End bells bushingX
13Change painting planX
14Change colorX
15Replace end bells X
16Change bearing sealing deviceX
17Additional shaft threads machiningX
18Terminal box Thread machiningX
19Change degree of protectionX
20Replace terminal boxX
21Replace terminal blocks/pins/X
22Change nameplateX
23Change type of protection (Ex d to Ex de)X
24Turn T. Box 90o x 90o90x90X
25Change grease bearing X
26Change mountingX
27Replace insulation material classX
28Replace auxiliary components (PTC, PT100 and
heaters)PTCPT100X
29Replace boltsX
30Vibrations sensor installX
31Install canopyX
32Change lubrication systemX
33Run out correctionX
34Add auxiliary componentsX
35Install an additional Terminal BoxX
5
2
1
O
B
C
TIME (C)
CE Marking CE
Notified Body
EC mark for electrical equipments in hazardous atmospheres
EC
Equipment Group
Equipment category
Gas
Type of protection against explosion
Equipment Group
Gas Subdivision
Temperature Class
Notified Body
Year
ATEX Directive ATEX
Certificate Number
200
LOCKED ROTOR
NORMAL OPERATION
ROTOR
STATOR
tE
CLASS F
130
120
40
0
S
4
0
2
H
5
3
1
3
1
4
2
A
T3
Look at the right way to install the lip into the cover and the
oil (or grease) on this part
.
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