Vb85 33kv/1250A-25ka Indoor Frontal Drawable Embeded Pole 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.: VB85
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: VDE, ISO9001-2000, Type Tested
• Transport Package: Wooden Case
• Trademark: FARADY
• Origin: Zhejiang, China
• HS Code: 85372090
• Production Capacity: 20000

Product Description

Overview

 
VB85 33 indoor high voltage vacuum circuit breaker is a new developed product JiaJi electric co., LTD., mainly for the rated voltage 40.5 kV, three-phase ac 50 hz, power system for industrial and mining enterprises, power plants and transformer substation protection and control, especially suitable for frequent operation. Conformity with GB11022 "high voltage switch equipment and control equipment standards of common technical requirements, GB1984 ac high voltage circuit breaker and IEC56 high voltage circuit breaker and other standards.
 

Service Condition

Ambient temperature: not higher than +40 °C, not less than -10°C (at -30 °C to allow storage and transportation).
Altitude: not exceed 1000m.
Relative humidity: daily average of not more than 95%,saturated vapor pressure on the average of not more than 2.2 × 10-3MPa, On average not more than 1.8 × 10-3MPa.
Earthquake intensity: not more than eight.
No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration.
 

Technical Parameters

Item	Description		Unit	Data
1	Rated voltage		KV	40.5
2	Max. voltage		KV	40.5
3	Rated current		A	1250/1600/2000/2500/3150
4	Rated break current on shorting		KA	31.5/40/50
5	Rated short circuit making current		KA	80/100/125
6	Rated peak withstand current		KA	80/100/125
7	4S Rated withstand current		KA	31.5/40/50
8	Rated insulation level	Power frequency voltage(when losing a circuit)	KV	Dreaker 48
		Impulse withstand voltage(when losing a circuit)		Dreaker 84
9	Rated operating sequence			OC-0.3s-CO-180S-CO
10	Mechanical life		Times	10000
11	Open circuit times of rated short dropout current		Times	50
12	Rated close brake voltage of operating machnie		V	110,220
13	Rated break brake voltage of operating machnie		V	110,220
14	Clearance between open contacts		mm	11±1
15	Exceed range(the compress length of contact sping)		mm	4±0.5
16	Different period of three-phase break and close break		ms	≤2
17	The jump time of contact close break		ms	≤2
18	Average break speed		m/s	0.9~1.2
19	Average closing speed		m/s	0.6~1.2
20	Opening time	Ubder max.operating voltage	S	≤0.05
		Under min.operating voltage		≤0.08
21	Closing time		s	≤0.1
22	Resistance of each phase main loop		μΩ	≤40
23	Contacts limit ersion		mm	3