隔离开关
说明：
FZW33-12KV/24KV户外交流真空隔离负荷断路器是采用国内现有成熟负荷断路器开关生产经验和国外先进技术设计制造的新产品。负荷断路器由断开片、真空灭弧室和操作机构组成。真空灭弧，具有灭弧能力强、性能可靠、寿命长、体积小、无爆炸危险、对环境无污染等优点
它符合IEC62271-12；GB/T3814:3.6~41.5kV高压开关，IEC61694；GB/T11122：高压开关设备和控制设备
技术数据：
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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