Lightweight Indoor SF6 Gas Circuit Breaker-36kV

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Key attributes

Brand	ROCKWILL
Model NO.	Lightweight Indoor SF6 Gas Circuit Breaker-36kV
Rated voltage	36kV
Rated frequency	50Hz
Series	LYHM4

Product descriptions from the supplier

Description

Description

LYHM4 medium voltage circuit breaker uses sulfur hexafluoride (SF6) gas as arc extinguishing and insulating medium. SF6 gas has smooth breaking characteristics, and there will be no interception phenomenon when breaking the current, and no operating overvoltage will occur. This excellent characteristic ensures that the circuit breaker has a long electrical life. And the impact on the equipment during operation, the dielectric level and thermal stress will not be affected.

LYHM series medium-voltage sf6 gas circuit breakers use sulphur hexafluoride (SF6) gas as arc extinguishing and insulating medium.SF6 gas has smooth breaking characteristics, in which no cut-off phenomenon occurs when breaking current and no operational overvoltage is generated. This excellent characteristic ensures that the circuit breaker has a long electrical life. It has no impact on the shock, dielectric level or thermal stress of the equipment during operation.
The pole pole of the circuit breaker, i.e. the interrupter section, is a maintenance-free closed system for life. The sealing life is in accordance with IEC 62271-100 and CEII-1.The opening/closing process of LYHM series circuit breakers is carried out by REH type spring actuator.

The actuator and pole are fixed on the same metal frame, which also serves as a handcart that can be pushed in and out along the guide rails inside the switchgear, and the handcart movement can be operated when the cabinet door is closed.The lightweight and compact construction of the circuit breaker ensures that it is robust and reliable.

SF6 Gas Circuit Breaker Applications
LYHM series circuit breakers are used for the control and protection of distribution lines, substations, distribution stations, motors, transformers and capacitor banks.
Due to the SF6 automatic buffer breaking technology, LYHM circuit breakers do not generate operational overvoltage, so they are very suitable for applications where the level of dielectric strength of the insulating material is particularly sensitive, especially for capacitive and inductive loads, such as capacitor banks, compensating reactors and motors.

Applying ambient Conditions:

Ambient temperature: -15℃~+40℃, the average temperature is not more than 35℃ in 24 hours
Height above sea level:≤1000m;
Relative humidity: the average humidity of a day should be no more than 95%; the average humidity of a month should be no more than 90%;
Saturated vapor pressure: the average pressure of a day should be no more than 2.2kPa, the average humidity of a month should be no more than l.8kPa;
Environmental conditions: It should be installed in the places without dust, smoke, chemical erosion, combustible gas and saline fume pollution.

SF6 Gas Circuit Breaker Technical Parameters

NO.	Item	Unit	LYHM-4	LYHM-17	LYHM-24	LYHM-36	LYHM-40
1	Rated Voltage	Ur [kV]	12
2	Rated insulation voltage	Us [kV]	12
3	50 Hz(min) frequency withstand voltage	Ud [kV]	28
4	Impulse withstand voltage	Up [kV]	75
5	Rated frequency	Fr [Hz]	50/60
6	Rated operating current (40 °C)	Ir [A]	630/800/1250/1600/2000/2500/3150/3600
7	Rated breaking capacity	Isc [kA]	12.5/16/25/31.5/40/50
8	Rated short-circuit withstand current	Ik [kA]	12.5/16/25/31.5/40/50
9	Rated short-circuit closing current	Ip [kA]	31.5/40/50/63/80/100/125
10	Rated operating sequence	-	0-0.3s-CO-5s-CO
11	Breaking time	[ms]	45
12	Arcing time	[ms]	10-15
13	Breaking time	[ms]	55-60
14	Closing time	[ms]	80
15	Maximum external size	H [mm]	640	649	818	730/1060	790/1123
		W [mm]	493	618	730	880/955	748/805
		D [mm]	496	496	620	695	833
16	Pole centre distance	l [mm]	150	210	275	350	280
17	Weight	[kg]	114	114	119	128	190
18	SF6 gas absolute pressure	[kPa]	380	380	380	380	450

Negotiable

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Model

LYHM4-36

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Whole life care manager

Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.

The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

Lightweight Indoor SF6 Gas Circuit Breaker-36kV

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Description

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