High Voltage Electric Components - High Voltage PM Vacuum Circuit Breaker

High Voltage PM Vacuum Circuit Breaker

Outdoor High Voltage PM Vacuum Circuit Breaker (Recloser, Partition Slotter)

Introduction - High Voltage PM Vacuum Circuit Breaker
1. ZW32-12/M630-20 Outdoor High Voltage PM Vacuum Circuit Breaker (Recloser, Partition Slotter) is an outdoor high voltage power distribution device of three-phase 50 Hz 12 kV rated voltage 630A~1250A rated current 16KA~20KA rated short circuit current.
2. It is mainly used in opening and closing the overload current, load current as well as short circuit current of the power system. It is applied to protect and control the power distribution system of industrial mining enterprises as well as rural network and frequently operated places.
3. The product has kept all the reasonable structure and good performance of the former ZW32, which improved the overall mechanical life span including the arc chamber. It can be used for sixty thousand times and thirty times free of maintenance.
4. By expansion, it can be conveniently assembled into reclose and partition slotter which can distinguish temporary failure from permanent failure. Meanwhile, it can realize various network compositions, protection and operation functions in accordance with the customers by making use t of the powerful controlling function of the permanent magnetic actuator.
Functional Features - High Voltage PM Vacuum Circuit Breaker
1. Computer control device is configured with a group of 20 batteries. The battery capacity can work for 50-hour.
2. The battery adopts electronic PT, AC220V, CT charge which is safe and reliable.
3. The devices are installed a remote control switch at the distance of 30 meters. The on-site operators need not to climb poles.
4. Provide the protection of management functions. The users can easily modify current skip within a flexible setting value.

Model Meaning
Main Parameters - High Voltage PM Vacuum Circuit Breaker
Table One
Order Name Unit Parameter
1 Rated voltage KV 12
2 Rated current A 630/1250
3 Rated frequency Hz 50
4 Imin work frequency voltage tolerance Dry test KV 42/49
Wet test 30
5 Lightening impact current tolerance (peak value) alternated, towards the ground/fracture KV 75/85
6 Rated short circuit breaking current KA 20
7 Rated short circuit closing current (peak value) KA 50
8 Rated peak value current tolerance KA 50
9 4S short term current tolerance KA 20
10 Rated operation cycle
open-0.3s-slose-open-180s-close-open
11 Rated times short circuit breaking current Times 30
12 Mechanical life span Times 50000
13 Secondary circuit I min work frequency voltage tolerance KV 2
14 Protection CT Ratio A ( )/5
Capacity VA 15
15 Weight Kg 100
16 Reclose interval Second 0~50(adjustable)
17 Setting times of reclosing the switch Times 1~4 (adjustable)
18 Start current setting of the overload current A 20~4000(adjustable)
19 Delayed time of setting the overload current Times 0~50 (adjustable)
20 Start setting current of immediate break A 20~4000(adjustable)
21 Rated energy storage voltage V Dc 24V Ac 220V
22 Rated voltage of opening/closing the switch release button V Dc 24V Ac 220V
23 Simulate measure error ≤29%

Table Two
Order Name Unit Parameter
1 Contact openness size Mm 11±1
2 Contact excess travel Mm 3+1.0-0.3
3 Average Switch closing speed M/s 0.65±0.15
4 Average Switch opening speed M/s 1.1±0.2
5 Differences of three-phase Switch opening at the same period Ms ≤2
6 Switch closing and bouncing time Ms ≤2
7 Switch closing time Ms ≤60
8 Switch opening time Ms ≤70
9 DC resistance of each phase circuit µΩ ≤200
10 Dynamic, static contacts allowed accumulated attrition thickness Mm 3
Contour & Installation Dimensions - High Voltage PM Vacuum Circuit Breaker

Contour & Installation Dimensions Diagram of MZW32-12G/M630-20 (with isolate switch)
Contour & Installation Dimensions Diagram of MCHZ　32-12G
1 Isolate knife
2 Insulate railings
3 Insulator
4 Static contact
5 isolate switch support
6 handle bar of the isolate switch
7 Isolate switch support
8 Interlock rod
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