SF6 Gas Insulated Switchgear
ZF12-72.5/126/145(L)
1.General Description
The ZF12-72.5/126/145(L) gas insulated switchgear(GIS) is a new type of switchgear with 3-phase sharing enclosure. It has excellent electric and mechanical performance and enjoys compact construction. With those features, the GIS finds wide application in the power net ranging from 72.5kV up to 145kV


2. Large Breaking Capability

Self-energized arc control device is applied for the GIS' circuit breaker. The device is so designed that the energy of arc generated is used to improve its arc quenching capability, which leads to a higher breaking capability and a lower operating force needed

3.Common Data

Item
Unit
Data
Rated voltage
kV
72.5
126
145
Rated current
A
3150
Rated frequency
Hz
50
Altitude
M
1000
Ambient temperature
¡æ
-25¡«+40
-40¡«+40
Relative humidity
%
Day average:¡Ü100
Month average:¡Ü95
Seismic resistance
Degree
¡Ü9
Power frequency withstanding voltage (rms), 5min, zero SF6 Gauge pressure, to earth and across break
kV
¡Ý55
110
Insulation level, secondary circuit(1min)
V
2000
Bay width
M
1.5
Bay weight
kg
5020
SF6 leakage rate
%
<1
SF6
moisture
content
CB & CT compartment
PPm
150/300 (at delivery/in service)
High speed
disconnector
compartment
High speed earthing
switch compartment
Other compartments
250/500(at delivery/in service)
Rated SF6 gas
pressure(by
volume, 20¡æ)
CB & CT
compartment
Mpa
0.6
Other
compartments
0.4
Operating load
kN
15¡ü, 25¡ý
Static load
kN/m2
15
Crane required for
maintenance
Capacity
kg
3000
Hook Height
M
¡Ý5.5
Workshop
dimensions
H
M
¡Ý4.5
W
¡Ý3



   
 
 
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