(Embedded pole/cast pole) 40.5kv AC/DC 3poles indoor high voltage vacuum circuit breaker

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZN85-40.5
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Open Frame
• Structure: ACB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000
• Origin: China

Product Description

VHE-40.5 vacuum circuit breaker with rated voltage 40.5kV, three-phase ac 50HZ indoor distribution device,Is the new product that developed by our company independently.  We have the intellectual property rights, the product can be compatible with the products such as ZN85.VN1.VBD and so on.

VHE-40.5 embedded indoor vacuum circuit breaker (hereinafter referred to as the circuit breaker), Is a type of high voltage switch equipment which appropriate to 40.5kv,50Hz three phase alternating current system.  For points and load current,Overload current,Fault current of industrial and mining enterprises,power plant and substation.  Vacuum circuit breaker pole insulation has experienced air insulation- composite insulation - embedded insulation,It has formed three generations of vacuum circuit breaker. In the first generation -air insulation,live part exposed in air, Its insulation affected by dust,moisture, Insects and so on. In the second generation- composite insulation,The arcing chamber protected by epoxy resin sleeve. But the sleeve does not wrap the high-voltage electric parts wholly,It would be affected by dust,Moisture,Insects and so on.  The third generation of insulation is embedded pole,By the APG process, Using epoxy resin to seal the whole arc extinguish chamber and the upper and lower outlet.  To do this, Not only reduce the arcing chamber size and also completely unaffected by the external environment (dust, moisture, etc.) so that improve the weatherability,Epoxy resin at this time not only as a part of the main insulation,At also be a support for the mechanical,The electric field distribution and the stress distribution is superior to the various shapes of insulating clapboard structure. Vacuum circuit breaker and operating mechanism adopts upper and lower arrangement structure,Effectively reduce the depth of the vacuum circuit breaker.Spring operating mechanism is specifically designed for this new type of vacuum circuit breaker,Installed in the vacuum circuit breaker frame,The structure is more suitable for the upper and lower arrangement structure,And become the integral part of the overall structure of vacuum circuit breaker. The simple mechanism design,The output curve and its performance is more suitable for the characteristics and requirements of 40.5kV vacuum circuit breaker.  The overall layout is reasonable, beautiful,Simple,small volume,Flexible operation, Reliable performance,With electrical characteristics of long service life,Convenient maintenance,Free maintenance machanism.  The vacuum circuit breaker is suitable for frequent operation ,Various occasions and operating conditions which are harsh place.
 

No.	Item		Unit	Value
1	Rated voltage		KV	40.5
2	Rated insulation level	Rated lighting impulse withstand Voltage (peak)	KV	185
		1min Short-time power frequency withstand voltage(1min)	KV	95
3	Rated short circuit breaking current		KA	25	31.5
4	Rated current		A	1250/1600	1250/1600/2000
5	Rated withstand current(peak)		KA	63	80
6	Rated operations of short circuit breaking current interruption			20
7	Rated duration of short circuit		S	4
8	Rated operating sequence			-0.3S--180S- Opening-0.3S-closing opening-180S-closing opening
9	Closing and brake device circuit of power supply voltage		V	AC,DC220    AC,DC110
10	Closing time		ms	50~100
11	Opening time		ms	30~60
12	Rated breaking current( a capacitor)		A	630
13	Rated breaking current(back to back capacitor)		A	400
14	Mechanical life			20000

 

No.	Item	Unit	Value
1	Contact distance	mm	18±1
2	Contact over travel	mm	6±1
3	Average opening speed	m/s	1.6±0.2
4	Average closing speed	m/s	0.8±0.2
5	Contact bouncing duration at closing operation	ms	≤2
6	Operating mechanism type		3AVSpecial spring mechanism
7	Three-pole simultaneity	ms	≤2
8	Conductive circuit resistance  of each phases	μΩ	<45