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LW38-40 High Voltage Indoor SF6 Insulated Circuit Breaker For Switchgear And Substations

LW38-40.5w outdoor AC High-Voltage Sulfur Hexafluoride(SF6) circuit breaker (hereinafter referred to as "circuit breaker") is an outdoor high-voltage distribution switchgear with three-phase AC 50Hz and rated voltage of 40.5kV. It can be used to open and close rated current and fault current, switch on and off capacitor banks, and switch lines. It is especially suitable for frequent operation and can also be used as a contact circuit breaker.

The circuit breaker uses SF6 gas as the arc extinguishing and insulation quality is installed outdoors and adopts the elevated porcelain column structure.

The circuit breaker complies with technical standards such as GB / t1984-2014 high voltage AC circuit breaker, DL / t402-2016 high voltage AC circuit breaker, and JB / T 9694-2008 high voltage AC sulfur fluoride circuit breaker.

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Model:
LW38-40
Brand:
DGG

1. SF6 vacuum circuit breaker has good electrical insulation properties, can maintain a low breakdown voltage under high voltage, safe and effective.

2. The high thermal conductivity of the gas absorbs the arc energy and cools down the arc very quickly, and cuts off the fault current rapidly.

3. The stability of the gas reduces the maintenance cost.

4. SF6 can work under harsh environmental conditions.

5. Compared with the traditional vacuum circuit breaker, SF6 vacuum circuit breaker is small in size, light in weight, compact in design, easy to install and maintain.

reliable vacuum circuit breaker switchgear vacuum circuit breaker insulated vacuum circuit breaker pole mounted vacuum circuit breaker Sf6 Circuit Breaker gas Insulated Circuit Breaker

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No.	Item		Unit	Data
1	Rated frequency		Hz	50
2	Rated voltage		kV	40.5
3	Rated current		A	1250 / 1600 / 2000
4	Rated Short-Circuit Breaking Current		kA	31.5
5	Rated Short-Circuit Closing Current			80
6	Rated Short-Time Withstand Current			31.5
7	Rated Peak Withstand Current			80
8	Rated Out of Step Breaking Current			10
9	Rated Short-Circuit Continuous Time		s	4
10	Rated Short-Circuit Breaking Current Breaking Times		Times	10
11	Rated short-time power frequency withstand voltage	Interphase, to earth(dry)	kV/min	95/1
		Fracture (dry)		118/1
		Interphase, to earth(wet)		80/1
		Auxiliary circuit to earth		2/1
12	Rated lightning impulse withstand voltage	Interphase, to earth	kV	185
		Fracture		215
13	Rated Operating Voltage and Auxiliary Circuit Rated Voltage		V	AC220, DC220
14	Main Circuit Rsistance	Rated Current 1600A and below	micro-Ohm	Not more than 90
		Rated Current more than 1600A		Not more than 40
15	Closing Time	Under AC Voltage	ms	Not more than 100
		Under DC Voltage		55 ~ 100
16	Opening Time	Under AC Voltage		Not more than 60
		Under DC Voltage		30 ~ 65
17	Closing - Opening Time			Not less than 120
18	Opening - Closing Time			Not more than 50
19	Full Breaking Time			Not more than 78
20	Rated Operating Order			O - 0.3s - CO -180s- CO
21	Moving Contact Travel		mm	96±2.5
22	Contact Opening Distance		mm	60±1.5
23	Closing buffer Stroke		mm	10±2
24	Phase-to-Phase opening Synchronism		ms	Not more than 3
25	Phase-to-Phase closing Synchronism		ms	Not more than 3
26	Phase spacing		mm	725
27	Annual Gas Leakage rate of SF6		%	Not more than 0.5
28	SF6 Gas Moisture content (ppm, gauge pressure at 20 degrees Celcius)	Handover Acceptance Value	V/V	Not more than 150
		Distance Travel		Not more than 300
29	SF6 Gas Rated Pressure (gauge pressure at 20^oC)		MPa	0.45
30	SF6 Gas Replenish Pressure (gauge pressure at 20 ^oC)			0.42
31	SF6 Gas Locked Pressure (gauge pressure at 20^oC)			0.4
32	Mechanical Life		Times	6000
33	SF6 Gas Weight		Kg	5
34	Weight (with CT)			800
	Weight (without CT)			1000
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate.

No.	Item		Unit	Data
1	Rated frequency		Hz	50
2	Rated voltage		kV	40.5
3	Rated current		A	1250 / 1600 / 2000
4	Rated Short-Circuit Breaking Current		kA	31.5
5	Rated Short-Circuit Closing Current			80
6	Rated Short-Time Withstand Current			31.5
7	Rated Peak Withstand Current			80
8	Rated Out of Step Breaking Current			10
9	Rated Short-Circuit Continuous Time		s	4
10	Rated Short-Circuit Breaking Current Breaking Times		Times	10
11	Rated short-time power frequency withstand voltage	Interphase, to earth(dry)	kV/min	95/1
		Fracture (dry)		118/1
		Interphase, to earth(wet)		80/1
		Auxiliary circuit to earth		2/1
12	Rated lightning impulse withstand voltage	Interphase, to earth	kV	185
		Fracture		215
13	Rated Operating Voltage and Auxiliary Circuit Rated Voltage		V	AC220, DC220
14	Main Circuit Rsistance	Rated Current 1600A and below	micro-Ohm	Not more than 90
		Rated Current more than 1600A		Not more than 40
15	Closing Time	Under AC Voltage	ms	Not more than 100
		Under DC Voltage		55 ~ 100
16	Opening Time	Under AC Voltage		Not more than 60
		Under DC Voltage		30 ~ 65
17	Closing - Opening Time			Not less than 120
18	Opening - Closing Time			Not more than 50
19	Full Breaking Time			Not more than 78
20	Rated Operating Order			O - 0.3s - CO -180s- CO
21	Moving Contact Travel		mm	96±2.5
22	Contact Opening Distance		mm	60±1.5
23	Closing buffer Stroke		mm	10±2
24	Phase-to-Phase opening Synchronism		ms	Not more than 3
25	Phase-to-Phase closing Synchronism		ms	Not more than 3
26	Phase spacing		mm	725
27	Annual Gas Leakage rate of SF6		%	Not more than 0.5
28	SF6 Gas Moisture content (ppm, gauge pressure at 20 degrees Celcius)	Handover Acceptance Value	V/V	Not more than 150
		Distance Travel		Not more than 300
29	SF6 Gas Rated Pressure (gauge pressure at 20^oC)		MPa	0.45
30	SF6 Gas Replenish Pressure (gauge pressure at 20 ^oC)			0.42
31	SF6 Gas Locked Pressure (gauge pressure at 20^oC)			0.4
32	Mechanical Life		Times	6000
33	SF6 Gas Weight		Kg	5
34	Weight (with CT)			800
	Weight (without CT)			1000
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate.

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LW38-40 High Voltage Indoor SF6 Insulated Circuit Breaker For Switchgear And Substations

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