5410-3.pdf
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G3A-b 72.5/145kV 325/650kV 140/275kV 50/60Hz 1250/2000/2500/3150 A 31.5/40kA-3sec. 0.7 MPa(GCB)/0.7 MPa(GIS) IEC Type Rated voltage Rated lightning impulse withstand voltage Rated power frequency withstand voltage Rated frequency Rated current Rated short time withstand current Rated gas pressure (abs.) Applied standards Ratings G 3 A b
Transcript of 5410-3.pdf
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G3A-b
72.5/145kV
325/650kV
140/275kV
50/60Hz
1250/2000/2500/3150 A31.5/40kA-3sec.
0.7 MPa(GCB)/0.7 MPa(GIS)
IEC
Type
Rated voltage
Rated lightning impulse withstand voltage
Rated power frequency withstand voltage
Rated frequency
Rated currentRated short time withstand current
Rated gas pressure (abs.)
Applied standards
Ratings
G 3 A - b
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Certificate of KEMA
Typical Construction of 72.5145kV GIS
SF6gas
Insulators
Live partsCT/PT
Eathed parts
Disconnectorandmaintenanceearthing switch(DS/M-ES)
Voltage transformer(VT)
Earthing switch(ES)
Cable sealing end(CH)
Disconnector(DS)
Disconnector andmaintenance earthingswitch(DS/M-ES)
Gas circuit breaker(GCB)
Current transformer(CT)
Bushar
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Insulating spacer
Insulating rod
Operatingmechanism
Plane View
Side View
Motor Charged Spring Mechanism of GCB Operating Mechanism of 3 Position Type DS/M-ES
Feature of 3 Position Type for Busbar DS/M-ESGas Circuit Breaker
Puffer piston
Exhaust hole
Puffer cylinderArcing contact
Arcing contactNozzle
(A) Initial stage of current interruption
DS : ONES : OFF
DS : OFFES : OFF
DS : OFFES : ON
(B) Final stage of current interruption
Effective arc energy transfer to pressure rise
Optimum puffer cylinder dimensions
Reduce the driving energy
Principle of advanced hybrid puffer
Design phyrosophy for interrupting chanber
Easy access to maintenance partsCompactness for small size of mechanical box
Reduced number of partsOnly one driving mechanismCompactnessPhysically mechanical interlock system
Opening spring
Motor
Closing spring
Closing coil
Opening coil
Aux.sw
Fixed contact
of ES
Fixed contact of DS
Moving contactof DS/ES
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Single Line Diagram
Typical Arrangement (Double Busbar System)
L I N E
B / C BA NK
Double Busbar System
5410-3 '08-04T1
Transmission Distribution & Industrial Systems Company1-1, Shibaura 1-chome, Minato-ku, Tokyo 105-8001, Japan
Phone. +81-3-3457-3658 Facsimile. +81-3-5444-9168
The data given in this catalog are subject to change without notice.
LINE
LCP
BB-2GCB
CT
CT
BB-1
DS/ES
DS/ES
VT
DS
DS DS
ES
ES
CT
GCB
CT
H-ES
CH
LINE B/C BUS-VT
VT
DS
DS DS
ES ES ES
ES
ES
VT
VT
ES
CT
CT
GCB
CTGCB
CT
H-ES
CH
DS
BANK
DS DS
ES
CT
GCB
CT
CH
H-ES
BB-2
BB-1
DS
5 5 0 0
3 0 0 0
5 5 0 0
2900
LCP
BB-2 CT
CT
CH
H-ES
GCB
BB-1
DS
DS/ES
4000
3.0 t 3.0 t
3 4 0 0
4 0 0 0
800
LINE
800 800 800
LINE
B/C BANK
BUS-VT
5 5 0 0
LCP
BB-2 CT
CT
DS/ES
CH
VT
H-ES
GCB
BB-1
DS
DS/ES
4000
3.0 t
3 4 0 0
