630A Circuit Breakers

NegotiableUpdate on October 06

Model

Nature of the Manufacturer: Other

Product Category: Vacuum Circuit Breaker

Place of Origin: City, Province

Online Consult Contact Information

Overview

With a rated voltage of 12kV,three phase AC frequency of 50Hz, draw out type vacuum circuit breaker can be a flexiable unit to protect line equipment with short-circuit situation or frequent operations.

Product Details

Advantages

1 - with reliable interlock functions, suitable for frequent operation

2 - low noise and energy consumed

3 - simple and robust construction.

4 - high operating reliability

5 - mechanical durability of switch : 20000 times, etc

Product description

VS1 indoor medium voltage Vacuum Circuit Breaker is a three-phase AC 50Hz ,rated voltage 6KV,12KV,24KV switch equipment of power system.

Breaker adopts the integral design of the actuating mechanism and the breaker body, which can be used as a fixed installation unit or as an individual VCB carriage together with handcart. They have a long life expectancy. There is no adverse effect on the vacuum, even from frequent switching of operating and short-circuit currents.

Mechanical parameters

No.	Item	Unit	Date
1	Rated voltage	KV	12				24
2	Clearance between open contacts	mm	11±1				13±1
3	Over travel of moving contact		3.5±0.5				3.5±0.5
4	Three poles asynchronous time at opening	ms	≤2				≤2
5	Moving contact bounce time at closing	ms	≤2				≤2
6	Average opening speed	m/s	0.9-1.2				0.9-1.2
7	Average closing speed		0.6-0.8				0.6-0.8
8	Connecting pressure of close contacts	N	20kA	25kA	31.5kA	40kA	20kA	25kA	31.5kA	40kA
			2000±200	2400±200	3100±200	4250±200	2000±200	2400±200	3100±200	4750±200

Fields of application

1 - Transformers and distribution substations

2 - Generator control and protection

3 - Capacitor bank control and protection, etc