AC 50Hz 630A 17.5kv Vmd Vacuum Universal Circuit Breaker

Rated Frequency: 50 Hz Circuit Breaker; Mechnical Life: 10000times Circuit Breaker; Transport Package: Wooden Case Packing (900*900*1000mm); Origin: Cixi, Ningbo Circuit Breaker;

Product Details Company Profile

Description

Model NO.: VMD
Operation: Manual & Electric Circuit Breaker
Arc-extinguishing Medium: Vcb Circuit Breaker
Structure: Vcb Circuit Breaker
Type: Circuit Breaker
Certification: ISO9001-2000
Rated Current: 630A Circuit Breaker
Rated Short-Time Withstand Current: 20/25/31.5 Ka Circuit Breaker
Trademark: Mingde Circuit Breaker
Specification: OHSAS/ OHSMS 18001, ISO9001
HS Code: 8535210000

Breaking Capacity: Middle& High Voltage Circuit Breaker
Speed: Normal Type Circuit Breaker
Installation: Fixed & Withdrawal Circuit Breaker
Poles Number: 3
Function: Overcurrent Protection
Rated Voltage: 17.5kv Circuit Breaker
Rated Frequency: 50 Hz Circuit Breaker
Mechnical Life: 10000times Circuit Breaker
Transport Package: Wooden Case Packing (900*900*1000mm)
Origin: Cixi, Ningbo Circuit 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.
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 Technical Parameters

Item	unit	Data
Rated voltage	kV	17.5
1 min power frequency withstand voltage	kV	50
Lightning impulse withstand voltage	kV	95
Rated frequency	Hz	50
Rated current	A	630
Rated short-time withstand current	kA	20,25
Rated peak withstand current	kA	50,63
Rated short-circuit breaking current	kA	20,25
Rated short-circuit closing current	kA	50,63
Rated short-circuit duration	S	4
Contact over-travel	mm	3.5±0.5
Clearance between open contacts	mm	9±1/11±1
Average opening speed	m/s	1.1±0.2
Average closing speed	m/s	0.6±0.2
Opening time	ms	35-60
Closing time	ms	20-45
Rated operation sequence		O-0.3s-CO-180s-CO(<40kA)/ O-180s-CO-180s-CO(≥40kA)
Mechanical life	cycles	10000,30000