High-Voltage Indoor Vacuum Circuit Breaker Zn85-40.5

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Model NO.: ZN85-40.5
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed or Handcart Type
• Structure: Vcb
• Poles Number: 3
• Type: Indoor Vacuum Circuit Breaker
• Function: Isolation,Protection,Automatic Reclosing
• Certification: ISO9001-2000
• Rated Voltage: 40.5kv
• Rated Current: 1250~4000A
• Mechanical Life: 10000
• Altitude: 1000m
• Transport Package: Wooden Box Packing
• Specification: Custom-made
• Trademark: ZGHQDL
• Origin: China
• HS Code: 8546900000
• Production Capacity: 3000/M

Product Description

ZN85-40.5 indoor high voltage vacuum circuit breaker is suitable for three-phase AC 50Hz, 40.5kV system,which can be used by industrial and mining enterprises, power plants and substations as divided loadcurrent, overload current fault current, and suitable for frequent operation occasions.
This circuitbreaker adopts an upper and lower arrangement structure to effectively reduce the depth of the circuitbreaker. And the use of composite insulation structure, three-phase arc extinguishing chamber andconnected charged body by three independent epoxy resin insulating shell isolation, after the use ofcomposite insulation structure, circuit breaker to meet the normal operating conditions of air distanceand climbing distance requirements, and effectively reduce the volume of circuit breaker, the leadingelectric circuit vacuum arc extinguishing chamber and dynamic and static conductive connectioninstalled in the insulating cylinder, so that the phase between the phase is only 300mm. The main circuitelectrical connections are all fixed connections, which has high reliability.

Item		Unit	Parameter
Rated voltage		kV	40.5
Rated current		A	1250		1600	2000,2500
Rated short-circuit breaking current		kA	25	31.5	25	31.5
Dynamically  stabilized current  (peak)		kA	63	80	63	80
4S thermally stable current		kA	25	31.5	25	31.5
Rated short circuit closing current(peak)		kA	63	80	63	80
Rated number of short-circuit current breaks		times	20
Rated sequence of operations			0-0.3 S-CO-180 s-CO
Rated      insulation      level	1min power frequency      withstand voltage	kV	95
	Lightning impulse withstand voltage  (peak)		185
Mechanical life		times	10000
Rated single capacitor bank opening and      current		A	630
Rated back to-back capacitor bank current		A	400
Rated voltage of energy storage motor		v	AC,DC : 110 ; 220
Energy storage motor  rated power		W	≤230
Energy storage motor energy storage time		S	≤15
The rated voltage of the closing and opening coil		V	Dc: 110 ; 220
Closing and opening coil rated current		A	1.05(110V) 0.96(220V)
Contact  spacing		mm	18±1
Contact travel		mm	5±1
The three-phase synthesis  is divided into      different periods		ms	≤2
Contact closure bounce time		ms	≤3