Zw32 12kv Fixed and Handcart Type Outdoor Vacuum Circuit Breaker

ZW32-24 type outdoor high voltage vacuum circuit breaker is three-phase AC,50(60)Hz outdoor power distribution equipment with the rated voltage of 24kv,Used to open and close the load current,over load current,and short circuit current in the electric power system.

Product Details Company Profile

Description

Model NO.: ZW32
Operation: Manual and Electric Type Circuit Breaker
Arc-extinguishing Medium: Vacuum
Structure: Vcb Circuit Breaker
Type: Circuit Breaker
Certification: ISO9001-2000, Ohsas 180001
Rated Current: 630/1250A Circuit Breaker
Rated Short Circuit Breaker Current: 20/25 Ka Circuit Breaker
Rated Short-Time Withstand Current: 20/4 Ka/S Circuit Breaker
Transport Package: Wooden Case Packing (900*900*1000mm)
Origin: Cixi, Ningbo Circuit Breaker

Breaking Capacity: Middle& High Voltage Circuit Breaker
Speed: Normal Type Circuit Breaker
Installation: Fixed and Handcart Type Circuit Breaker
Poles Number: 3
Function: Overcurrent Protection
Rated Voltage: 12/24 Kv Circuit Breaker
Rated Frequency: 50 Hz Circuit Breaker
Rated Peak Withstand Current: 50/63 Ka Circuit Breaker
Trademark: Mingde Circuit Breaker
Specification: OHSAS/ OHSMS 18001, ISO9001
HS Code: 8535210000

1. Summary

ZW32-24 type outdoor high voltage vacuum circuit breaker is three-phase AC,50(60)Hz outdoor power distribution equipment with the rated voltage of 24kv,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 condition

A. The altitude above sea level does not over 2,000 meters;
B. Surrounding air temperature: -40 ºC ~+40 ºC ;
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
				Data
NO	Item		Unit	12kv	24kv
1	Rated voltage		kV	12	24
2	Rated frequency		Hz	50	50
3	Rated current		A	630/1250	630/1250
4	Rated short circuit breaking current		kA	20/25	20/25
5	Rated peak withstand current		kA	50/63	50/63
6	Rated short time withstand current/ lasting time		kA/s	20/4 ,25/4	20/4 ,25/4
7	Rated short circuit closing current(peak)		kA	50/63	50/63
8	Rated operating sequence			O-0.3s-CO-180s-CO
9	Mechanical life			10000	10000
10	Rated short circuit breaking current breaking times			50	20
11	1min power frequency withstand current	(wet)	kV	34/36	50/64
11	1min power frequency withstand current	(dry)	kV	42/49	65/79
12	Lightning impulse withstand voltage(peak)		kV	75/85	125/145
13	Secondary circuit power frequency withstand voltage (1min)		V	2000	2000

Table2 Circuit Breaker's Main Mechanical Data
NO	Item		Unit	Data
NO	Item		Unit	12kv	24kv
1	Clearance between contacts		mm	9±1	12±1
2	Contact's overtravel		mm	2.5±0.5	3.5±1
3	Open speed		m/s	1.4±0.2	1.4±0.2
4	Closing speed		m/s	0.7±0.2	0.7±0.2
5	Contact closing jumping time		ms	≤2	≤2
6	Pole center distance		mm	340±1.5	380±1.5
7	Three pole open/close non-simultaneity		ms	≤2	≤2
8	Each pole conducting circuit resistance		μΩ	≤70	≤70
9	Closing time		ms	25-60	25-60
10	Open time		ms	20-60	20-60
11	Motor's rated power		w	40	40