24/33/110/126/132kV SF6 (Vacuum) Circuit Breaker

Description:

LW36 model is outdoor SF6 (Vacuum) circuit breaker using sulfur hexafluoride gas or vacuum as the arc extinguishing and insulating medium and adopts the most advanced self-energy arc-extinguishing technology. It has the characteristics of long electrical life, low operating power and high reliability.

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DESCRIPTION

Guaranteed Technical Parameters


Description		Unit	Guaranteed Values
Rated voltage		kV	24	36	40.5
Rated insulation level	Lightning impulse withstand voltage (full wave peak)	kV	150	170	210*/215 (fracture) 185
	Power frequency withstand voltage (1 minute)	kV	65	75	95
Rated current		A	1250/1600/2000/2500
Mechanical life		Operations	10000
SF6 gas rated pressure (25 gauge pressure)		MPa	0.45
Blocking pressure (time gauge pressure)		MPa	0.40
Maximum 4 ℃ ambient temperature		℃	-30
Rated short circuit breaking current		kA	20/25/31.5/40
Rated short circuit making current (peak value)		kA	50/63/80/100
Rated short time withstand current (thermal stability current)		kA	20/25/31.5/40
Rated peak withstand current (dynamic stability current)		kA	50/63/80/100
Rated out of step breaking current		kA	50/63/80/100
Rated short circuit duration		s	4
Closing time (at rated operating voltage)		ms	≤80	≤80	≤100
Opening time (under rated operating voltage)		ms	≤65	≤65	≤70
Rated operating sequence			0-0.3s-CO-180s-CO
Rated switching current of single capacitor bank		A	400
Annual air leakage rate		%/year	≤1
Water content of SF6 gas (at 20 ℃)		ppm (V/V)	≤150
Rated operating voltage of CT14 spring operating mechanism		V	DC: 110, 220 AC; 110, 220, 380
Closing coil and breaking coil voltage		V	DC: 110, 220 AC; 110, 220, 380
Voltage of energy storage motor		V	AC: 220, DC: 220
Closing speed		m/s	3.2 ± 0.2	3.2 ± 0.2	3.2 ± 0.2
Opening speed		m/s	3.4±0.2	3.4±0.2	3.4±0.2
Weight of sulfur hexafluoride gas		kg	7-8
Weight of circuit breaker (including operating mechanism)		kg	800/900/1400


No.	Description of Parameters		Unit	Value
1	Rated voltage		KV	126
2	Rated current		A	3150
3	Rated frequency		HZ	50
4	First pole to clear factor			1.5
5	Rated short circuit breaking current		KA	40
6	Rated short-circuit current (peak)		KA	100
7	Rated short-circuit withstand current		KA	40
8	Rated power frequency withstand voltage (1min)	Phase to earth	KV	K·230
8	Rated power frequency withstand voltage (1min)	Phase to phase	KV	K·(230+70)
9	Rated lightning impulse withstand voltage	Phase to earth	KV	K·550
9	Rated lightning impulse withstand voltage	Phase to phase	KV	K·(550+103)
10	Rated peak withstand current		KA	100
11	Rated out of step current		KA	10
12	Close fault current		KA	90%1K
13	Electrical life of rated short circuit breaking current		times	20
14	Rated short circuit duration		s	4
15	Rated line charging close current		A	31.5
16	Rated operation sequence			O-0.3s-CO-180s-CO35
17	Main circuit resistance		μΩ	≤35
18	Rated SF6 gas pressure		MPa	0.6
19	SF6 gas leakage rate		ppm	≤0.55
20	Moisture content of SF6 gas (V/V)			≤150
21	Mechanical life		times	10000
22	Electric distance	Phase to earth	mm	3906/3150
22	Electric distance	Phase to phase	mm	3906/3150
23	Each filled with SF6 gas quality		kg	8
24	Quality of each circuit breaker		kg	~ 1700