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Vacuum Circuit Breakers is used to make and break load current, overload current and short-circuit current in 12/24kV, 50/60Hz power system and applicable for substations, electricity power networks, etc.
Vacuum Circuit Breakers Description:
ZW58-12/24 model outdoor AC vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in 12/24kV, 50/60Hz power system. It is applicable for substations, industry and mining, urban and rural electricity power networks, especially for occasions with frequent operation and automatic power distribution network. It accords with the standard of
IEC622 71-100 & GB1984: AC high voltage circuit breaker, IEC60694 & GB/T11022: HV General technical requirement of switch and control apparatus
Vacuum Circuit Breakers Features:
Strong breaking capability
High level of insulation
Long service life time
Good pollution resistance
Vacuum Circuit Breakers Technical data:
|
Test Item
|
Unit
|
Data
|
|
|
Rated voltage
|
kV
|
12
|
24
|
|
Rated current
|
A
|
630/1250
|
630/1250
|
|
Rated frequency
|
Hz
|
50/60
|
50/60
|
|
Rated short-time withstand current
|
kA
|
25
|
25
|
|
Rated short-circuit duration
|
s
|
4
|
4
|
|
Rated active load breaking current
|
A
|
630/1250
|
630/1250
|
|
Rated loop breaking current
|
A
|
630/1250
|
630/1250
|
|
Rated short-circuit making current
|
kA
|
50
|
50
|
|
power frequency withstand voltage against the earth, between phases
|
kV rms
|
40
|
65
|
|
power frequency withstand voltage against the isolating distance
|
kV rms
|
48
|
79
|
|
Lightning impulse withstand voltage against the earth, between phases (peak)
|
kV
|
75
|
125
|
|
Lightning impulse withstand voltage against the air gap(peak)
|
kV
|
85
|
145
|
|
Mechanical life
|
Times
|
10000
|
10000
|
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