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LW39-126 outdoor AC high voltage SF6 circuit breaker

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1000

LW39-126 outdoor AC high voltage SF6 circuit breaker

LW39-126 outdoor AC high voltage ceramic pole type SF6 circuit breaker can be used in power systems with a frequency of 50Hz and a nominal system voltage of 110kV. It is the main power equipment for control and protection in power plants and substations. The circuit breaker adopts the principle of thermal expansion and self-energy arc extinguishing, and is filled with SF6 gas with excellent arc extinguishing performance and electrical insulation performance. All seals adopt double-ring O-rings, which can effectively prevent gas leakage. It is equipped with a CT30 spring. The operating mechanism realizes three-phase mechanical linkage operation.

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Number of views:

1000

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High Voltage Eectrical

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TEL：+86-0574-65728118

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Detail

Parameters

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Technical Parameter

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Serial number	Name			unit	Parameter
1	System nominal voltage			kV	110
2	Rated voltage			kV	126
3	Rated frequency			Hz	50/60
4	Rated current			A	3150
5	Rated short-circuit breaking current			kA	31.5	40
6	Rated short-circuit making current (peak value)			kA	80	100
7	Rated short-time withstand current (thermal stability current)			kA	31.5	40
8	Rated peak withstand current (dynamic stability current)			kA	80	100
9	Rated short-circuit duration (thermal stability time)			s	4	3
10	First open coefficient				1.5
11	Lightning impulse withstand voltage			kV	650
12	1min power frequency withstand voltage			kV	275
13	Creepage ratio			mm/ kV	25/31
14	Rated operating sequence				O-0.3s-CO-180s-CO
15	Closing time			ms	≤110
16	Breaking time			ms	≤65
17	Close-time			ms	≤85
18	Closing time			ms	80±5
19	Opening time			ms	33±7
20	Number of fractures per pole			个	1
21	Main circuit resistance			μΩ	≤45
22	Mechanical life			Times	10000
23	SF6 gas pressure (20℃)	Rated value		Mpa	0.55		0.60
		Alarm value		Mpa	0.50		0.55
		Blocking value		Mpa	0.45		0.50
24	SF6 moisture content			ppm(V/V)	≤150
25	SF6 annual leakage rate				≤1%
26	Auxiliary circuit voltage			V	AC220
27	Closing coil		Voltage	V	DC220			DC110
			Current	A	2			3.3
28	Opening coil		Voltage	V	DC220			DC110
			Current	A	2			5.8
29	Energy storage motor		Voltage	V	AC220/DC220
			power	W	600
30	Energy storage time			s	≤15

GW23-252D outdoor AC high voltage isolating switch

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