outdoor High vacuum circuit breaker

outdoor Hight vacuum circuit breaker Uses the vacuum extinguishing of arc, opens breaks the ability strongly

outdoor High vacuum circuit breaker

1. Outline

The SC40303-40.5 outdoors high vacuum circuit breaker uses in to exchange 50Hz, the 40.5kV three-phase electrical power system, the achievement divides, of of gathers using of the load current, the excess current and the short-circuit current.

This circuit breaker conforms to national standard GB1984-89 "A.c. high voltage Circuit breaker" and international electrician committee standard IEC56 "High-pressured Exchange Circuit breaker" request.

Circuit breaker main characteristic

a . Uses the vacuum extinguishing of arc, opens breaks the ability strongly, the electricity life is long, mechanical life 10,000;

b . Structure simple, exempts the maintenance, the overhaul period is not long;

c . Insulating ability good, the anti- contamination ability is strong;

d . May match the spring or the electromagnetism holds the drive mechanism, the machine capability is reliable, but frequently operates; Does not have the fire and the detonation hidden danger;

e . The internal installation current transformer measuring accuracy reaches 0.2 level, may realize the three-phase differential motion protection;

f . congeals the dew controller, can maintain the circuit breaker under the certain temperature humidity the reliable movement. 2 Circuit breaker exploitation conditions

A. surrounding air temperature upper limit +40 °C lower limits general areas -30 °C , high and cold area -40 °C ; B. elevation does not surpass 1000m; C. wind pressure does not surpass 700Pa (to be equal to wind speed 34m/s); D. earthquake intensity does not surpass 8; E. air contamination degree III level

3 Main technical parameter

3.1 Fixed parameter

Project			Unit	Parameter
Rated voltage			kV	40.5
Fixed insulation level	1min labor frequency pressure resistance	Dryly tries	kV	95
		Wet tries (to insulate to place outside)		80
	The thunder presses the impact pressure resistance (peak value)			185
Nominal current			A	1250 , 1600 , 2000
The rating short-circuits the drop-out current			kA	20 , 25 , 31.5
Fixed operation sequence				~0.3~  ~180S~
The rating short-circuits the drop-out current to open breaks the number of times				20
The rating short-circuits the pass to gather the electric current (peak value)			kA	50 , 63 , 80
Fixed peak value withstanding electric current
Fixed short-time withstanding electric current			kA	20 , 25 , 31.5
The rating short-circuits the duration			s	4
Mechanical life				10000
Fixed operation voltage and assistance return route rated voltage			V	Junction, direct current 220 , 110
Sound of something astir contact permission attrition thickness			mm	3
Weight			kg	800

3.2 Machinery adjustment parameter

The contact opens the distance	mm	20±2
Contact contact travelling schedule	mm	4±1
Evenly divides equally the floodgate speed	m/s	1.5±0.2
Average Gathers floodgate speed	m/s	0.7±0.2
The contact Gathers floodgate bounces the time	ms	≤ 2
Three coincides (minute) the floodgate same time the time difference	ms	≤ 2
Gathers floodgate time	ms	≤ 150
Minute floodgate time	ms	≤ 60
Each return route DC resistance	µΩ	≤ 100

4 The contour and installs the size

 

 

SC40303-40.5 outdoors high vacuum circuit breaker external dimensions

 

Please contact Ms.Amy YIN --- yinamy9@gmail [dot] com and sikeqd@126 [dot] com

outdoor High vacuum circuit breaker