LW58-252/T4000-50 High voltage sulfur hexafluoride circuit breakerDetailed product description：

The arc extinguishing chamber of LW58-252/T4000-50 high-voltage sulfur hexafluoride circuit breaker adopts a self powered pressurized pneumatic double action structure, which has more stable breaking performance;
Small operating power, high product reliability, mechanical lifespan of 6000 (10000) times;
The dynamic and static arc contacts adopt a copper tungsten integral sintered structure, which is resistant to high temperatures and has minimal burning loss under the action of the arc. It can be fully opened and closed 20 times at full capacity;
Reliable sealing performance: SF6 annual leakage rate is far less than 0.5%;
Strict dehumidification process for product components: SF6 moisture content is much lower than similar products;
External insulation creepage distance ≥ 31mm/KV, strong stain resistance;
The arc extinguishing chamber valve plate is made of special zinc based alloy, which is heat-resistant, lightweight, and has stable and reliable breaking performance;
The nozzle is made of imported polytetrafluoroethylene and special materials, with high electrical strength, burn resistance, no deformation, and good creep resistance;
The secondary circuit electrical components and SF6 density controller are made of high-quality imported or joint venture manufacturer products;
Important components within the organization are forged from high-quality alloy steel, which has high strength, wear resistance, and can ensure frequent operation of circuit breakers with low failure rates.

		kA	fifty
seven	Rated short-circuit closing current (peak)		one hundred and twenty-five
eight	Rated short-time withstand current		fifty
nine	Rated peak withstand current		one hundred and twenty-five
ten	Rated as out of step breaking current		twelve point five
eleven	Near area fault breaking current			90%IK,75%IK
twelve	Rated short-circuit breaking current times		time	twenty
thirteen	Rated short-circuit duration		s	three
fourteen	Initial polar coefficient			one point three
fifteen	Rated line charging switching current		A	two hundred
sixteen	Rated operating sequence			O-0.3S-CO-180S-CO
seventeen	rated pressure		MPa	zero point six zero
eighteen	Leakage rate of sulfur hexafluoride gas		%	≤0.5
nineteen	Gas moisture content		μL/L	≤150×10-6
twenty	mechanical life		time	6000(10000)
twenty-one	Opening time		ms	≤35
twenty-two	closing time		ms	≤100
twenty-three	creepage distance	fracture	mm	≥8660
		to the ground		≥6400
twenty-four	Weight of sulfur hexafluoride gas per phase		kg	eight
twenty-five	Weight of each phase circuit breaker			one thousand and eight hundred

2) Main Technical Parameters Table of the Institution
serial number	name		unit	data
one	energy storage motor	rated voltage	V	DC220/AC220
		Normal operating voltage range		85%~110%
		power	W	seven hundred and twenty
two	Motor energy storage time		S	≤20
three	Voltage/current of opening and closing coils		V/A	DC110V/4，DC220V/2.5
four	auxiliary switch	rated current	A	10 (DC220V)
		Grounding number of auxiliary switch	Correct	11/11
five	limit switch	rated current	A	5 (DC220V)
		Connection points: normally open/normally closed	Correct	2/2
six	Heating and lighting circuit voltage		V	AC220
seven	mechanical life		Time1	6000(10000)

3) Mechanical adjustment parameters of the product
serial number	name		unit	data
one	Center distance between circuit breaker poles		mm	3000~4000
two	Opening time		ms	≤35
three	closing time			≤100
four	Cut off time			≤60
five	Split time			seventy
six	Opening and closing time			three hundred
seven	Three pole asynchronous tripping			≤3
eight	Three pole closing asynchrony			≤4

LW58-252/T4000-50 High Voltage Sulfur Hexafluoride Circuit Breaker