ZW8-12 Outdoor Vacuum Circuit Breaker

Production Introduction Overview: ZW8-12 Outdoor Vacuum Circuit Breaker is a three-phase AC 50Hz outdoor high voltage switchgear，it is m ainly used in 10kV pwoer systems in rural and urban power grids as shunt and merging load currents, overload currents and short-circuit currents. ZW8-12...

Send Inquiry

Product Introduction

Production Introduction

Overview:

ZW8-12 Outdoor Vacuum Circuit Breaker is a three-phase AC 50Hz outdoor high voltage switchgear,it is mainly used in 10kV pwoer systems in rural and urban power grids as shunt and merging load currents, overload currents and short-circuit currents. ZW8-12 Outdoor Vacuum Circuit Breaker meet the national standards GB1984 "AC high-voltage circuit breakers" and IEC 60056 "high-voltage AC circuit breakers" and other standards.

The overall structure of the ZW8-12 Outdoor Vacuum Circuit Breaker is a three-phase common box type, the three-phase vacuum interrupter is placed in a metal box, and the phase-to-phase insulation and ground insulation are made of SMC insulation material, which has reliable performance and high insulation strength. The ZW8-12 Outdoor Vacuum Circuit Breaker can choose a manual spring mechanism or an electric spring mechanism, and the electric spring mechanism can be equipped with a wireless remote control.

ZW8-12 Outdoor Vacuum Circuit Breaker is an ideal product to replace oil-immersed circuit breakers to achieve oil-free. According to user requirements, it can cooperate with the corresponding controller to form an AC high-voltage vacuum automatic recloser, an automatic sectionalizer, and a self-provided operating power supply, It is an excellent equipment for realizing distribution network automation.

Technical advantages:

1. Ceramic vacuum interrupter, strong arc extinguishing ability, high short-circuit breaking times, no fire, explosion and other dangers, no environmental pollution.

2. Electric spring operating mechanism, can be operated manually or electrically.

3. It is very convenient and reliable, and can be connected to remote operation.

4. The overall structure adopts a three-phase common box structure, the shell is in and out, and the box is dry air, which can be used reliably under harsh environmental conditions.

5. This product has various functions such as overcurrent protection, zero sequence protection, reclosing, low voltage and overvoltage protection.

6. This product is small in size, light in weight, beautiful in appearance and compact in design.

7. This product can be equipped with an isolating switch, and there are obvious fractures when the line is repaired, which enhances the safety.

Specification

The main technical parameters of circuit breakers：

No.	Item	Unit	Data
1	Rated Voltage	Kv	12
2	Rated Insulation(1min power frequency withstand voltage)	Kv	42
3	Rated Insulation(Rated lightning impulse withstand voltage)	A	75
4	Rated Frequency	Hz	50
5	Rated Current	A	630 / 1250
6	Rated Short-circuit Breaking Current	Ka	12.5 / 16 / 20
7	Rated Peak Withstanding Current	Ka	31.5 / 40 / 50
8	Rated short-circuit making current	Ka	12.5 / 16 / 20
9	Rated Short-circuit Current Breaking Times	t	30
10	Rated Thermal Stabilization Time	s	4
11	Rated Sequence of Operations	/	O-0.3s-CO-180s-CO
15	Allowable Wear Thickness of Contacts	mm	≤3
17	Mechanical Lifetime	t	10000