High-Performance Vacuum Circuit Breaker for Reliable Electrical Protection Zw32

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZW32-12/T630-25
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: SF6
• Installation: Fixed
• Structure: Box Type Sealing Structure
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
• Certification: ISO9001-2000, CE, CCC
• Transport Package: Export Standard Wooden Case
• Specification: 1300*650*1000
• Trademark: Ampower
• Origin: China
• Production Capacity: 100 Pieces/Week

Product Description

1. Overview
ZW32 series outdoor column circuit breaker (hereinafter referred to as circuit breaker) is an outdoor power distribution equipment with rated voltage of 12kV, 15kV, 24kV and 50/60Hz three-phase AC. It is mainly used for the load current, overload current and short circuit current in the power system of distribution network. It is suitable for protection and control in the power distribution system of substations and industrial and mining enterprises and suitable for rural power grids and frequently operated places, especially for the needs of urban and rural power grid transformation. This installation instruction manual specifies the main technical parameters, product structure, and operation, installation, use and maintenance of the circuit breaker principles and methods.

2. Environmental conditions for use
1.3.1 The altitude does not exceed 2000m;
1.3.2 The ambient air temperature does not exceed: -40ºC~+40ºC;
1.3.3 The wind speed shall not be greater than 35m/s;
1.3.4 Pollution grade: Grade IV
1.3.5 Installation site: No inflammable, explosive danger, chemical corrosion place.
1.3.6 The intensity of the earthquake shall not exceed 8 degrees

3. Product model


4. Main technical parameters of circuit breaker

S/N	Item		Unit	Value
1	Rated Voltage		kV	12	15	24
2	Rated Frequency		Hz	50/60
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-circuit withstand current			20 , 25
7	Rated short circuit duration		S	4
8	Rated short-circuit closing current (peak)		kA	50 , 63
9	Rated operating sequence			0-0.3s-C0-180s-CO
10	Mechanical life		Times	10000/disconnecting switch 2000
11	Breaking times of rated current			5000
12	Breaking times of rated short-circuit breaking current			30
13	Power frequency withstand voltage in 1min	Wet test/dry test	kV	42/48	50/55	65/79
14	Lightning impulse withstand voltage (peak) inter-phase, over the ground/fracture			75/85	88/100	125/145
15	Secondary loop l min power frequency voltage (except electronic devices)		V	2000

5. Mechanical characteristics of circuit breakers

S/N	Name	Unit	Parameter
1	Rated Voltage	kV	12	15	24
2	Clearance between open contacts	mm	9±0.5	11±0.5	14±0.5
3	Over-travel of contact	mm	3±0.5	3±0.5	3±0.5
4	Average opening speed	m/s	1.1±0.2	1.2±0.2	1.4±0.2
5	Average closing speed	m/s	0.6±0.2	0.8±0.2	1.0±0.2
6	Closing contact bounce time	ms	≤2
7	Resistance of each phase loop	μΩ	≤120 with isolating switch≤200
8	Closing time	ms	25~60
9	Opening time	ms	18~45
10	Three-phase heterogeneity	mm	≤2
11	Inter-phase center distance	mm	340	340	380