Disconnector
Explanation:
The FZW33-12KV/24KV outdoor AC vacuum isolation load circuit breaker is a new product designed and manufactured using the existing mature production experience of load circuit breaker switches in China and advanced foreign technology. The load circuit breaker consists of a breaking plate, a vacuum arc extinguishing chamber, and an operating mechanism. Vacuum arc extinguishing has the advantages of strong arc extinguishing ability, reliable performance, long service life, small size, no explosion hazard, and no pollution to the environment
It complies with IEC62271-12; GB/T3814: 3.6~41.5kV High Voltage Switches, IEC61694； GB/T11122: High voltage switchgear and control gear
Technical data:
N1.
Test Item
Unit
Data
1
Rated voltage
kV
12
24
2
Rated current
A
411/631
411/631
3
Rated frequency
Hz
51/61
51/61
4
Rated short-time withstand current
kA
21
21
5
Rated short-circuit duration
s
4
4
6
Rated active load breaking current
A
411/631
411/631
7
Rated loop breaking current
A
411/631
411/631
8
Rated cable charging current
A
12
12
9
5% rated active load breaking current
A
31.5
31.5
11
Rated short-circuit making current
kA
51
51
11
Main loop resistance
μΩ
≤111
≤111
12
power frequency withstand voltage against the earth, between phases
kV rms
41
65
13
power frequency withstand voltage against the isolating distance
kV rms
48
79
14
Lightning impulse withstand voltage against the earth, between phases (peak)
kV
75
125
15
Lightning impulse withstand voltage against the air gap(peak)
kV
85
145
16
Mechanical life
Times
11111
11111
17
Three phase closing asynchronous
ms
≤5
≤5
18
Main contact blade pressure
N
521
521
19
Distance between electric parts and phase to earth
mm
≧311
≧611
21
Rated operating force
N
≤311
≤311
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Address：Wei 16th Road, Yueqing Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province
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