12kv ZW32 Outdoor High Voltage Vacuum Circuit Breaker

Home >> Vacuum Circuit Breaker >> 12kv ZW32 Outdoor High Voltage Vacuum Circuit Breaker

Products details

Publish time 2019-02-01 12:08

12kv ZW32 Outdoor High Voltage Vacuum Circuit Breaker

1. General Description

ZW32-12 type outdoor high voltage vacuum circuit breaker is three-phase AC,50(60) Hz

outdoor power distribution equipment with the rated voltage of 12kv, used to open and close the load current, over load current,
and short circuit current in the electric power system. Also used to protect and control the circuit in substation, mining and industrial enterprises,
and frequently used in the operation places such as rural power network.

2. Using environmental conditions

A. The altitude above sea level does not over 2,000 meters;

B. Surrounding air temperature: -40 ℃ ~+40 ℃;

C. The wind speed is not bigger than 34m/s;

D. The air filthy should be with in Ⅲ degree

E. Installing places: Not flammable, the explosion hazard, chemistry corrode place;

F. Does not have the regular fierce vibration

3. Technical parameter

Table 1 Circuit Breaker's Main Technical Data

No.	Item		Unit	Data
1	Rated voltage		kV	12
2	Rated frequency		Hz	50
3	Rated current		A	630/1250
4	Rated short-circuit breaking current		kA	20/25
5	Rated peak withstand current(peak)			50/63
6	Rated short-time withstand current			20
7	Rated short-circuit making current(peak)			50/63
8	Mechanical life		Time	10000
9	Breaking times of rated short-circuit		Time	50
10	Power frequency withstand voltage(1min)	Dry	kV	42 / 49
10	Power frequency withstand voltage(1min)	Wet		34 / 36
11	Lightning impulse withstand voltage(peak)			75 / 85
12	Rated operating sequence			O-0.3S-CO-180S-CO
13	Rated operating voltage		V	AC/DC220
Circuit Breaker's Main Mechanical Data
No	Item		Unit	Data
1	Rated voltage		kV	12
2	Clearance between contacts		mm	9±1
3	Contact’s overt-travel		mm	2.5±0.5
4	Open speed		m/s	1.4±0.2
5	Closing speed		m/s	0.7±0.2
6	Contact closing jumping time		ms	≤2
7	Pole center distance		mm	340±1.5
8	Three pole open/close non-simultaneity		ms	≤2
9	Each pole conducting circuit resistance		μΩ	≤70
10	Open time		ms	20-60
11	Closing time		ms	25-60
12	Motor’s rated power		W	40