Quick Details
Description
- Model NO.: ZW32
- Operation: Manual and Electric Type Circuit Breaker
- Arc-extinguishing Medium: Vacuum
- Structure: Vcb Circuit Breaker
- Type: Circuit Breaker
- Certification: ISO9001-2000, Ohsas 180001
- Rated Current: 630/1250A Circuit Breaker
- Rated Short Circuit Breaker Current: 20/25 Ka Circuit Breaker
- Rated Short-Time Withstand Current: 20/4 Ka/S Circuit Breaker
- Transport Package: Wooden Case Packing (900*900*1000mm)
- Origin: Cixi, Ningbo Circuit Breaker
- Breaking Capacity: Middle& High Voltage Circuit Breaker
- Speed: Normal Type Circuit Breaker
- Installation: Fixed and Handcart Type Circuit Breaker
- Poles Number: 3
- Function: Overcurrent Protection
- Rated Voltage: 12/24 Kv Circuit Breaker
- Rated Frequency: 50 Hz Circuit Breaker
- Rated Peak Withstand Current: 50/63 Ka Circuit Breaker
- Trademark: Mingde Circuit Breaker
- Specification: OHSAS/ OHSMS 18001, ISO9001
- HS Code: 8535210000
1. Summary
ZW32-24 type outdoor high voltage vacuum circuit breaker is three-phase AC,50(60)Hz outdoor power distribution equipment with the rated voltage of 24kv,Used to open and close the load current,over load current,and short circuit current in the electric power system. Also used to protect and control the circuit in substation,mining and industrial enterprises, and frequently used in the operation places such as rural power network.
2. Using environmental condition
A. The altitude above sea level does not over 2,000 meters;
B. Surrounding air temperature: -40 ºC ~+40 ºC ;
C. The wind speed is not bigger than 34m/s;
D. The air filthy should be with in III degree
E. Installing places: Not flammable, the explosion hazard, chemistry corrode place;
F. Does not have the regular fierce vibration
3. Technical parameter
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Table 1 Circuit Breaker's Main Technical Data
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Data
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NO
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Item
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Unit
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12kv
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24kv
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1
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Rated voltage
|
kV
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12
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24
|
|
2
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Rated frequency
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Hz
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50
|
50
|
|
3
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Rated current
|
A
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630/1250
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630/1250
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|
4
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Rated short circuit breaking current
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|
kA
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20/25
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20/25
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5
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Rated peak withstand current
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kA
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50/63
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50/63
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|
6
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Rated short time withstand current/ lasting time
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kA/s
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20/4 ,25/4
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20/4 ,25/4
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|
7
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Rated short circuit closing current(peak)
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|
kA
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50/63
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50/63
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8
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Rated operating sequence
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|
O-0.3s-CO-180s-CO
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|
9
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Mechanical life
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10000
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10000
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10
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Rated short circuit breaking current breaking times
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50
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20
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11
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1min power frequency withstand current
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(wet)
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kV
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34/36
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50/64
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(dry)
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kV
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42/49
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65/79
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12
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Lightning impulse withstand voltage(peak)
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kV
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75/85
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125/145
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13
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Secondary circuit power frequency withstand voltage (1min)
|
V
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2000
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2000
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|
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Table2 Circuit Breaker's Main Mechanical Data
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NO
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Item
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Unit
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Data
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12kv
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24kv
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|
1
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Clearance between contacts
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mm
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9±1
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12±1
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2
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Contact's overtravel
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mm
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2.5±0.5
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3.5±1
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3
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Open speed
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m/s
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1.4±0.2
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1.4±0.2
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4
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Closing speed
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m/s
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0.7±0.2
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0.7±0.2
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5
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Contact closing jumping time
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ms
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≤2
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≤2
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6
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Pole center distance
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mm
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340±1.5
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380±1.5
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7
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Three pole open/close non-simultaneity
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ms
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≤2
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≤2
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8
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Each pole conducting circuit resistance
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μΩ
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≤70
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≤70
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9
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Closing time
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ms
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25-60
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25-60
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10
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Open time
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ms
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20-60
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20-60
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11
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Motor's rated power
|
|
w
|
40
|
40
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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.
