Model Number

LW8-40.5 Pillar Type

General

  The LW8-40.5 Type Pillar Type Outdoor High-voltage SF6 Vacuum Circuit Breaker is three-phase AC 50HZ outdoor high-voltage electric equipment,it mainly is used for control and protection of 35Kv distribution system as well as connecting breaker and on-off condenser bank,This circuit breaker owns CT14 model spring operation structure, it conforms with state standard GB1984-89 and 0f IEC.

Technical parameter

Item		Unit	Data
Rated Voltage		KV	40.5
rated insulation leve1	thunder impulse withstand voltage(peak vaule)	KV	185/215
	industrial frequency withstand voltaged(1 min)	KV	95
rated current		A	1600	2000
Mechanical life-span		Times	3000
SF6 air'rated pressure (gage pressure when 20℃)		MPA	0.45
shutting pressure(gage pressure when 20℃)		MPA	0.45
the lowest use environment temperature		C	-30
rated short-circuit break current		KA	25	31.5
rated short-ciruit close current(peak value)		KA	63	80
rated little withstand current (heat stablized current)		KA	25	31.5
rated peak vaule withstand current (stabilized current)		KA	63	80
rated breaking-step dropout current		KA	63	80
rated short follow current		S	4
time of closing brake(under rated operation voltage)		S	≤0.1
time of breking brake(under rated operation voltage)		S	≤0.07
rated operation order		ms	off-0.3Son and off-180S-an and off
rated on-offone condenser bank'current		A	400
the accumulated dropout times under rated short dropout current		Times	15	10
annual air-leakage ratio		%years	≤1
water content of SF6 air （when 20℃)		PPM(V)	≤150
rated operation volt of CT14spring operation structure		V	~220v
volt of closing coil、opening coil		V	AC:220
			DC:110 220
energy-store electric machine'volt		V	AC:220
			DC:220
weight of SF6 air		KG	8
weight of circuit breaker(including operation structure)		KG	1400