12kv 630A Vmd High and Medium Voltage Electric Vacuum Breaker

Overview 1. The complete specification of VMD series vacuum circuit breaker can meet customers' different needs. 2. VMD adopts the latest embedded poles and low-resistance vacuum interrupter.With main conductive circuit sealed in epoxy resin, the insulation performance will be more stable.

Product Details Company Profile

Description

Model NO.: VMD
Operation: Manual and Electric Type Circuit Breaker
Arc-extinguishing Medium: Vacuum
Structure: Vcb Circuit Breaker
Type: Circuit Breaker
Certification: ISO9001-2000, CCC, Ohsas 180001
Rated Current: 630A Circuit Breaker
Lighting Impulse Withstand Voltage: 75kv Circuit Breaker
Rated Short-Time Withstand Current: 20\25\31.5\40 Ka Circuit Breaker
Transport Package: Wooden Case (900*900*1000mm) Circuit Breaker
Origin: Cixi, Ningbo Circuit Breaker

Breaking Capacity: High and Medium Voltage Circuit Breaker
Speed: Normal Type Circuit Breaker
Installation: Fixed and Handcart Type Circuit Breaker
Poles Number: 3
Function: Overcurrent Protection
Rated Voltage: 12kv Circuit Breaker
1 Min Power Frequency Withstand Voltage: 42kv Circuit Breaker
Rated Frequeny: 50Hz Circuit Breaker
Trademark: Mingde Circuit Breaker
Specification: OHSAS/ OHSMS 18001, ISO9001
HS Code: 8535210000

Overview

1. The complete specification of VMD series vacuum circuit breaker can meet customers' different needs.

2. VMD adopts the latest embedded poles and low-resistance vacuum interrupter.With main conductive circuit sealed in epoxy resin, the insulation performance will be more stable.

3. VMD employs an accurate gear driving system, instead of the traditional chain wheel driving system.

4. VMD series circuit breaker passed Type Test Report according to GB and IEC standards.

5. VMD series circuit breaker has exported to 26 countries and regions in the world.

Main Specifications and Technical Parameters

NO	Item	Unit	Technical Data
1	Rated voltage	KV	12
2	1 min power frequency withstand voltage		42
2	Lighting impulse withstand voltage(peak value)		75
3	Rated Frequency	Hz	50
4	Rated current	A	630
5	Rated short time withstand current	KA	20,25,31.5,40
6	Rated withstand current(peak)		50,63,80,100
7	Rated short-circuit opening current		20,25,31.5
8	Rated short-circuit closing current		50,63,80
9	Rated duration of short-circuit	S	4
10	Contact's clearance		3.5±0.5
11	Contact's travel		9±1/11±1
12	Average opening speed	m/s	1.1±0.2
13	Average closing speed	m/s	0.6±0.2
14	Opening time	ms	35-60
15	Closing time	ms	20-45
16	Mechanical life	times	30000
17	Rated operating order		O-0.3S-CO-180S-CO