Vb4-11kv/630A-25ka Vcb Draw-out Type Indoor Vacuum Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Insert
• Structure: Vcb
• Model NO.: VB4
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000, Type Tested
• Transport Package: Wooden Box
• Trademark: FARADY
• Origin: China
• HS Code: 8535210000
• Production Capacity: 20000

Product Description

VB4 Indoor Vacuum Circuit Breaker


Description
VB4 series medium voltage vacuum circuit-breakers with lateral operating mechanism feature the separate pole construction technique. 
VS1 vacuum circuit breakers have been designed for indoor use and air insulated switchboards. 
Their switching capacity is sufficient to handle any conditions arising from switching of equipment and system components under normal operating and fault conditions, particularly short-circuits, within the parameters of their technical data. The vacuum circuit-breakers of type VB4, designed in column form, can be supplied both as individual units for fixed installation and mounted on chassis. Vacuum circuit-breakers are characterized by their simple and robust construction. They have a long life expectancy. There is no adverse effect on the vacuum, even from frequent switching of operating and short-circuit currents. 

Advantages
Vacuum circuit-breakers have particular advantages for use in networks where there is a high switching frequency in the working current range and/ or where a certain number of short- circuit breaking operations are expected. VS1 vacuum circuit- breakers are suitable for auto reclosing and have exceptionally high operating reliability and long life. The circuit- breakers are notable for their compact design, small dimensions together with high capacity. The operating mechanisms have a low maintenance requirement and the interrupters are maintenance- free throughout their service lives. They are well suited to all load breaking operations which occur in practice, and in particular: 
Short-circuit currents; 
Overhead lines under load and, no-load conditions; 
Cables under load and no-load conditions; 
Transformers under load and no-load conditions; 
Generators under load and no-load conditions; 
Ripple control system; 
Capacitor banks(also parallel switching) and Motors with starting currents above 600A; 

Fields of application
Below is the list of SM6 range units used in MV/LV transformer substations and industrial distribution substations: 
Cable control and protection
Overhead control and protection
Transformers and distribution substations
Motor and transformer control and protection
Generator control and protection
Capacitor bank control and protection

Main characteristics
1) Test voltage according DIN VDE 0670, part 1000, list 2
2) 4000 A with forced cooling
3) 3150 A with forced cooling in AP technology
4) Higher values on request
5) 360 mm for fixed, 280 mm for withdrawable Version
6) Circuit-breaker with heat sink 616 mm
7) Withdrawable Version
8) Circuit-breaker with heat sink 634 mm 

Serial Number	Item		Unit	Data
				31.5kA	40kA	50kA
1	Rated voltage		Kv	12/17.5/24kV
2	Maximum working voltage		Kv	12
3	Rated current		A	1250 1600 2000 2500	1250 1600 2500 3150	1250 2500 3150
4	Rated short-circuit break current		KA	31.5	40	50
5	Rated short-circuit close current (peak value)		KA	80	100	125
6	Rated withstand current (peak value)		KA	80	100	125
7	4S Rated little withstand current		KA	31.5	40	50
8	Rated insulation level	Industrial frequency Withstand voltage	KA	42/50/60
		Thunder impulse Withstand voltage		75/95/125
9	Rated operation order			Off-0.3S on and off-180S-on and off
10	Mechanical life		Times	10000
11	Rated short-circuit current break and close time		Times	50
12	Speak and move organization amount Assign the curre t of the floodgate(DC)		V	110220
13	Speak and move organization amount Equal to the curre t of the floodgate(DC)		V	110220
14	Switching distance of the contact		mm	>11
15	Ultra journey(touches the head Springand compress length)		mm	4+/-0.5
16	Three-phase breaking into shut Floodgate sex of the same period		Ms	<2
17	Touch the head and shut a Floodgate of time of bouncing		Ms	<2
18	Average speed of breaking brake		M/s	0.9~1.2
19	Average speed of closing brake		M/s	0.6~0.8
20	Time of breaking brake	Operate it under the Voltage highest	S	<0.05
		Operate it under the Voltage lowest		<0.08
21	Time of colsing brake		S	<0.1
22	Each the resistance of main return circuit		U Ω	<40
23	Allowance abrasion cumulated thickness Of the moving and stationary contact		mm	3

++++Packaging & Shipping


++++About Us
Founded in 1999, with a registered capital of 10 million USD, Zhejiang Farady Powertec.,CO enjoys about 20 years' experience in MV transmission and distribution electrical equipment manufacture.
We are National Hi-tech enterprise, National Spark plan Program,State Hi-tech enterprise, State Innovation R&D center, Patent demonstrate company.
Farady is located in Liushi of Yueqing, Zhejiang,China,main products include: Transformer/RMU/switchgear/AVR/ACR and MV indoor and outdoor switch. All the products of ours have passed the national and international laboratory type test, Farady Electric was qualified supplier of China State Grid and China southern Grid.
With ISO9001/14001/18001, we are strike for create value for our partner and customer.
There is more than 20 distributors and agents worldwide already trust us and distribute Farady product there, we are not only export product, but also provide whole technology solution to help partner to establish local factory in our business line.
Today, boasting the value of products specialization, brand management, and business globalization, with the sprits of pragmatism, innovation, efficiency, and responsibility, Farady Company is dedicated to become the top name in the international business from china, and contributes its share to the transformation from the Made in China into the Invented in China.


Copyright 2014 Farady Electric
Zhejiang Farady Powertech Co.,Ltd
Http:// faradypowertech.en.made-in-china.com

Add: N.O.278,Wei 7 Rd,Yueqing Economic development Zone,Liushi,Yueqing,Zhejiang,P.R.China, 325600