Quick Details
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
|
Rende Power Technology Group
With two wholly-owned holding subsidiaries of Ningbo Mingde Electrical Science&Technology Co., Ltd. And Mingde Electrical(Shanghai) Co., Ltd., Rende Power Technology Group is a high-tech enterprise that specializes in providing high-end circuit breaker technical solutions and core equipment manufacturing for the power industry.
Established in 2007, Ningbo Mingde Electrical Science&Technology Co., Ltd. is a manufacturing base of the company which is primarily responsible for the research and development, manufacturing and logistics of all the products. Situated in Cixi of Ningbo city, south bank of Hangzhou Bay Sea-Crossing Bridge, Ningbo Mingde Electrical Science&Technology Co., Ltd enjoys a beautiful natural scenery and humanistic landscape.
Located in Jiading New City, known as "One hundred meters--a forest, One thousand meters--a lake", Mingde Electrical (Shanghai) Co., Ltd. is seated at Jiading District, the future political economic and cultural center of Shanghai. Mingde Electrical (Shanghai) Co., Ltd. is mainly responsible for the external contact and the sales of all the products and for providing integrated solutions and service for the customers in power industry.
Up to now, the company has established a long-term strategic cooperation relationship with the domestic and international famous enterprises and universities and colleges, such as ABB, Schneider, Siemens, Eton, Baoguang, Xi'an Jiaotong University and Chongqing University and so on. The company is equipped with the product design and manufacturing capacity of 18000 sets of VMD high-voltage vacuum circuit breakers, 22000 sets of VMV smart vacuum circuit breakers and 6000 sets of switchgear assembly.
Leading technology, Stable property, Quality assurance, Energy Conservation and Environmental Protection--the unremitting pursuit of our company
Business Philosophy
To be a professional enterprise in electrical industry, through pragmatic work with a high sense of responsibility to the customers, employees, industry and society!
With the objective of the market demand and the criteria of customer satisfaction, we are committed to provide professional services to the electric systems. We insist on the people-oriented concept and the spirit of innovation in technology, management and marketing. Adhering to the business philosophy of quality service, our company is dedicated to providing safe and reliable products as well as quality service, to create value for employees, shareholders and customers.
