07/1 07 Earth Leakage Circuit Breakers General information ■ Description Now, ELCB's and MCCB's rated at 30AF (ampere frame) to 800AF share the same frame sizes and dimensions. FUJI has expanded its line up of 30AF to 800AF Breaker models. Standardized dimensions ease panel design and manufacture. " series" Models 30AF to 225AF (EG and SG series) are 60mm deep and require a panel cutout height of 52mm. Models 400AF to 800AF are 103mm deep and require a panel cutout height of 92mm. With standardized modular construction, FUJI Breakers cut panel manufacturing costs. ■ Features • Highly sensitive leakage current device FUJI's specially designed earth leakage tripping device uses a solid-state amplifier, which are highly efficient and quickly respond to ground faults. Moreover, there is a wide variety of tripping sensitivities to choose to suit different protection purposes. Standard tripping values are 15mA, 30mA, 100mA, 200mA and 500mA. • ELCB for many applications FUJI manufacture many types of ELCB's to satisfy a multitude of purposes. The SG series are the standard type, HG series are high breaking capacity type and the EG the economy type. ELCB's are available in single-phase 2-wire, single-phase 3-wire, three-phase 3-wire and three-phase 4- wire versions. • Easy to install and maintenance free The unit is installed and wired in exactly the same way as any other MCCB. FUJI ELCB's are available in a wide voltage ranges (100–230 or 100–230–440 Volts). Insulation testing between phases is easily carried out by simply switching the ELCB to OFF (the control power source must be disconnected). • Testing procedures All the ELCB's are provided with test buttons. Simply press button to check operation of the tripping device as instructed in operation manual. • Ambient temperature The ELCB's rated current is calibrated for an ambient temperature of 40°C. If the ambient temperature differs greatly from 40°C, it is necessary to compensate the rated current or operating time according to the ambient temperature calibration curve. • Time delay type Time delay type (...D) has been added to the EG, SG and HG series. These are mainly used as main circuit breakers. Since they trip later than the breakers at the end of the line, protective coordination can be carried out more easily. For further information, contact FUJI. • Conforming to international standards The series conforms to IEC and EN standards, and features cUL and CCC.
12
Embed
Earth Leakage Circuit Breakers General information€¦ · 07/2 Earth Leakage Circuit Breakers General information Circuit breaker Earth leakage relay unit Amplifier Sensor Test button
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
07/1
07
Earth Leakage Circuit BreakersGeneral information
� DescriptionNow, ELCB's and MCCB's rated at 30AF (ampere frame) to800AF share the same frame sizes and dimensions. FUJIhas expanded its line up of 30AF to 800AF Breakermodels.Standardized dimensions ease panel design andmanufacture. " series" Models 30AF to 225AF (EGand SG series) are 60mm deep and require a panel cutoutheight of 52mm. Models 400AF to 800AF are 103mm deepand require a panel cutout height of 92mm.With standardized modular construction, FUJI Breakers cut panel manufacturing costs.
� Features• Highly sensitive leakage current deviceFUJI's specially designed earth leakage tripping device usesa solid-state amplifier, which are highly efficient and quicklyrespond to ground faults.Moreover, there is a wide variety of tripping sensitivities tochoose to suit different protection purposes. Standardtripping values are 15mA, 30mA, 100mA, 200mA and500mA.
• ELCB for many applicationsFUJI manufacture many types of ELCB's to satisfy amultitude of purposes. The SG series are the standard type,HG series are high breaking capacity type and the EG theeconomy type. ELCB's are available in single-phase 2-wire,single-phase 3-wire, three-phase 3-wire and three-phase 4-wire versions.
• Easy to install and maintenance freeThe unit is installed and wired in exactly the same way asany other MCCB. FUJI ELCB's are available in a widevoltage ranges (100–230 or 100–230–440 Volts). Insulationtesting between phases is easily carried out by simplyswitching the ELCB to OFF (the control power source mustbe disconnected).
• Testing proceduresAll the ELCB's are provided with test buttons. Simply pressbutton to check operation of the tripping device as instructedin operation manual.
• Ambient temperatureThe ELCB's rated current is calibrated for an ambienttemperature of 40°C. If the ambient temperature differsgreatly from 40°C, it is necessary to compensate the ratedcurrent or operating time according to the ambienttemperature calibration curve.
• Time delay typeTime delay type (...D) has been added to the EG, SG and HGseries. These are mainly used as main circuit breakers.Since they trip later than the breakers at the end of the line,protective coordination can be carried out more easily.For further information, contact FUJI.
• Conforming to international standardsThe series conforms to IEC and EN standards, andfeatures cUL and CCC.
07/2
Earth Leakage Circuit BreakersGeneral information
Circuit breaker
Earthleakagerelay unit
Amplifier
Sensor
Testbutton
R
T.C
� Variety of ELCB'sChoose from a wide variety ofmodels—from economical to high-performance.Three series of Breakersensure the best choice for theapplication: the economical E series,the standard S series, and the high-performance, high-breaking capacity Hseries. The E series line-up ofcompact, economical ELCB is best forcircuits with relatively low short-circuitcurrents. The S series new andunique current-liminting mechanismprovides a surprisingly high breakingcapacity for a compact breaker. The Hseries features an excellent current-limiting mechanism and an enhancedmethod of arc-extinguishing to achievea higher breaking capacity than the Eand S series.
SG, EG and HG seriesThe SG, EG and HG series haveelectric device provided with ICs andcan be applied to a wide variety ofvoltages. The 2-pole breakers can beused within the range of rated voltageof 100–230 volts and the 3-polebreakers within the range of 100–230–440 volts. The SG and EG areavailable with ratings between 30AFand 800AF.The HG series are available withratings between 50AF and 800AF.SG series of over 30AF, HG and EGseries of over 50AF are also availablein the sensitive current changeovertype.
SG series – 3-phase 4-wireThe SG series 4-pole ELCB is astandard 3-pole ELCB to which afourth neutral pole has been added.It has been designed for 3-phase 4-wire power systems. 100A, 225A and400A frame sizes are available.SG104H and SG204H have a highbreaking capacity of 85kA at 200V AC.They are ideally suited for mainbreakers in distribution circuits. Theearth leakage tripping device is a solid-state type. The breaker is so designedthat the neutral pole makes the firstcontact on closing, and the last breakwhen opening so reducing thepossibility of incorrect or carelessoperation.
Motor protection ELCBFUJI ELCB's are designed to eliminateerroneous operations due to the rushcurrent produced at the time of startingthe motor. They will trip in the face ofsustained overcurrent when theintegrated bimetal relay has operated.
� Wiring diagram (skelton)
� ModificationsMounting modificationsFUJI SG, EG and HG series ELCB'sare normally supplied as frontmounting front connection type.However, they are also available eitheras X-type (front mounting rearconnection), E-type (flush mounting) orP-type (plug-in mounting).
Accessories-modificationsFUJI ELCB's can be supplied withaccessories such as alarm switch,auxiliary switch or shunt trip device,which are customer-mountable orfactory-mounted.For details see page 07/68.
CE markingLine protectionSG series
Standard
EG series
Economical
Motor protectionSG, EG series
Standard, economical
UL approvedUL489 approved line protectionSG-UL series EG-UL series
07/3
07
Earth Leakage Circuit BreakersGeneral information
Note: Type number with " -CE" indicates the IEC and CE marking conformed model,but type number without " -CE" indicates also the same.
Series
SG
EG
HG
SG
EG
Pole
3
3
2
3
3
3
4
4
Standard
IEC 60947-2JIS C8201-2
JIS C8371
IEC 60947-2JIS C8201-2
JIS C8371
JIS C8371
Ampere frame
30
SG33C -CE
EG32AC -CE
EG33AC -CEEG33C -CE
50
SG53C -CESG53RC -CE
EG52AC -CE
EG53AC -CEEG53C -CE
HG53B
60
SG63C -CESG63RC -CE
EG63C -CE
100
SG103C -CESG103RC -CE
EG102C -CE
EG103AC -CEEG103C -CE
HG103B
SGa104ASG104H
EG104A
225
SG203C -CESG203RC -CE
EG203C -CE
HG203B
SGa204ASG204H
400
SG403C -CE
SG403RC
EG403C -CE
HG403B
SGa404A
600
SG603RC
EG603C
HG603B
800
SG803RC
EG803C
HG803B
Varieties of ELCBs
Line protection
Series
SG
EG
Pole
3
3
Standard
IEC 60947-2JIS C8201-2
IEC 60947-2JIS C8201-2
Ampere frame
30
SG33CM -CE
EG33CM -CE
50
SG53CM -CE
EG53CM -CE
60
SG63CM -CE
EG63CM -CE
100
SG103CM -CESG103RCM -CE
EG103CM -CE
225
SG203CM -CESG203RCM -CE
EG203CM -CE
Motor protection
Series
SG
EG
Pole
3
2
3
Standard
UL489IEC 60947-2JIS C8201-2
UL489IEC 60947-2JIS C8201-2
Ampere frame
50
SG53RCUL
–
–
225
SG203CUL
–
–
400
SG403CUL
–
–
100
SG103CUL
EG102CUL
EG103CUL
UL489 Listed
07/4
Panel cutout52, 92mm
Terminalheight24mm(Up to 225AF)
Depth60, 103mm
Earth Leakage Circuit BreakersDesign features
MCCB ELCB Earth leakagedetector
Earth leakagedetector
Miniaturization, size unification
ZCT
Feed through primaryconductor
Insulation tube
10 mm
Base
Earth-leakage tripindicator
Earth-leakage tripcoil
Connector
Armature
Trip spring
Test circuit contact
� DescriptionToday's industries have introducedadvanced information systems andautomated systems to increaseefficiency.These systems rely on a stable supplyof electrical power. The reliability,operational ease, and costeffectiveness of these power suppliesmust improved. Earth leakage circuitbreakers must also be more compactwith improved reliability. They need tobe economical to reduce the overalldistribution panel cost.The new FUJI ELCB has beendeveloped to meet these expectationsand requirements. Now, for the firsttime, FUJI ELCB and MCCB of thesame rating are the same size, a long-awaited development in themanufacture of low-voltage distributionboard.
� Features• Standardized ELCB and MCCB
outline dimensionsFUJI breakers featurecompact and modular construction.The ELCB's and MCCB's of the samerating, from 30AF to 800AF, are thesame size.
• Standardized modular constructionHaving circuit breakers of the samebasic dimensions promote modulardesigns. New ELCB's areavailable in two standard depths: 60and 103mm, choose it from two frontpanel cutout height of 52mm or 92mm.The center of the window frame ispositioned at the center of the circuitbreaker. These design featuresenable a radical reduction in thenumber of mounting patterns.
• Ultra-small leakage detector andtrip unit
The leakage detector is equipped witha new, thin, high-performance ZCTwith uniform magnetic characteristics.The new ZCT allows a compactleakage detector with stable balancingcharacteristics to be manufactured.
• Simple and highly reliableelectronic circuit
Very stable operation across a widevoltage range has been obtained witha highly reliable dedicated IC which isoperated with minute currents and aFUJI designed power circuit.
• Small, high-efficiency trip unitA small, highly efficient trip coil whichoperates with a small tripping currentand has a strong driving force hasbeen developed with a CAD(Computer Aided Design) basedmethod of magnetic field analysis.
• One ELCB can be used with circuitvoltages of 100–230–440V AC (high-speed type)Easy selection of ELCB and greatflexibility in meeting specificationchanges.Selection of the proper ELCB is madeeasier because of the wide voltagerange of one unit, (100–230–440V AC).Changes in specifications can also bemade more easily with such a widevoltage range.
• Three-step, sensitivity to faultcurrents (100/200/500mA)A three-step change (100/200/500mA)in the rated sensitivity to fault currentshas widened the range of application.This allows full compliance withchanges in specifications.
• Easily interchangeable ELCB andMCCBThe ELCB and MCCB allow thedesigner to quickly alter distributionpanel and facility design whenspecifications are changed.The ELCB and MCCB can be easilyreplaced by each other because theirsizes and basic specifications are thesame.
ZCTSolid-stateamplifier
Powersupplycircuit
Currentlimitingcircuit
R
T
Charging capacitor
100V/ 240V/440V circuit
Magnetic hold type trip coil
07/5
07
Earth Leakage Circuit BreakersDesign features
The ELCB can be mechanically tripped externally.
Insulation has been strengthened by using resin to mold the main circuit conductor and ZCT into an integrated unit.
The sensitive trip mechanism operation can be checked at any time by simply pressing the test button.
A unit construction for the ELR and greater wiring efficiency has boosted connection reliability.
Accessorymounting space
Insulationmechanism
Earth leakagedetection section
Arc quencher(Larger arc-extinguishing space)
Overcurrent tripping device
Resin molded
ZCT
Conductor
When the breaker opens due to an earth leakage current the trip indication button pops out to indicate that an earth leakage has occurred.
Tripping indication button ELR unit with less wiring
Test button
Solid-state insulation ZCT
Trip button
� Construction
07/6
Earth Leakage Circuit BreakersDesign features
� Internal and external accessoriesA wider range of customer-mountable accessoriesThe range of cassette-type internalaccessories has been greatlyexpanded for ELCBs. Thisspeeds up and simplifies customerresponse to specification changes.All accessories shown here can bemounted by the customer except formotor operating mechanism and platetype padlocking device.
Wide variety of internal accessorycombinationsUp to two auxiliary switches, two alarmswitches, and one shunt trip device orundervoltage trip device quickly snapon or in.
Quick and easy mountingNo need to open breaker cover tomount accessories. Internalaccessories easily snap into a pocketat the left of the breaker window frame.
No adjustmentsAccessory mounting is quick and easy— accessories adjust automatically atthe correct position when mounted.
AF93-82 AF93-81
• Terminal block typesTerminal blocks are mounted on theside of the breaker case. Blocks areonly 12.5 or 19mm thick, minimizingpanel mounting space. Installed leadwires are parallel to the side of thecase.
Two ways to connect — lead wiresor terminal blocks• Lead wire typesLeads are marked with to indicate thecorrect terminal number of theaccessory — incorrect wiring isminimized. To make wiring easy andprevent to incorrect connection, thelead wires are provided with colorcoated tube and marking on it.
Internal accessories Alarm switch K Alarm switch with terminal block KA Auxiliary switch W Auxiliary switch with terminal block WA Undervoltage trip R Shunt trip F Test lead wire TL Megger test switch MGSExternal accessories Motor operating mechanism M Handle padlocking device Cap type Q1 Plate type Q2 Mechanical interlocking device M1
M2M3
Operating handle N-type N Operating handle V-type V Steel enclosure Direct operating C Dustproof steel enclosure Handle operating CV Rainproof steel enclosure Handle operating CW Terminal cover Short TS Terminal cover Long TB Insulation barrier Interphase *2 B Insulation barrier Earth BL Handle locking cover L Flat terminal S
Internal accessories Alarm switch K Alarm switch with terminal block KA Auxiliary switch W Auxiliary switch with terminal block WA Undervoltage trip R Shunt trip F Test lead wire TL Megger test switch MGSExternal accessories Motor operating mechanism M Handle padlocking device Cap type Q1 Plate type Q2 Mechanical interlocking device M1
M2M3
Operating handle N-type N Operating handle V-type V Steel enclosure Direct operating C Dustproof steel enclosure Handle operating CV Rainproof steel enclosure Handle operating CW Terminal cover Short TS Terminal cover Long TB Insulation barrier Interphase *2 B Insulation barrier Earth BL Handle locking cover L Flat terminal S
Internal accessories Alarm switch K Alarm switch with terminal block KA Auxiliary switch W Auxiliary switch with terminal block WA Undervoltage trip R Shunt trip F Test lead wire TL Megger test switch MGSExternal accessories Motor operating mechanism M Handle padlocking device Cap type Q1 Plate type Q2 Mechanical interlocking device M1
M2M3
Operating handle N-type N Operating handle V-type V Steel enclosure Direct operating C Dustproof steel enclosure Handle operating CV Rainproof steel enclosure Handle operating CW Terminal cover Short TS Terminal cover Long TB Insulation barrier Interphase *2 B Insulation barrier Earth BL Handle locking cover L Flat terminal S