35kV Indoor SF6 Gas Circuit Breaker

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 CEI17-1.

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.

Function of SF6 Gas Circuit Breaker

SF6 circuit breakers employ sulfur hexafluoride (SF6)gas for both arc quenching and insulation.This colorless,odorless.non-toxic,and non-flammable inert gas boasts exceptional dielectric strength and superior arc-extinguishing capabilities,far surpassing traditional insulating gases.Consequently,its use in electrical equipment allows for smaller designs,eliminates fire hazards,and enhances the reliability and safety of power systems.

Thanks to SF6's smooth current interruption characteristics,these breakers prevent current chopping and the resulting switching overvoltages.This excellent feature ensures a prolonged electrical lifespan and has no adverse effects on the equipment's operational stresses,dielectric integrity,or thermal strain.The breaker's poles, which house the arc-quenching chambers,are hermetically sealed systems designed for a lifetime of maintenance-free operation

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.

Technical specifications

Dimensional drawing:

SF6 Gas Circuit Breaker Overall Outline Drawing

Applying ambient Conditions:

1. Ambient temperature: -15℃~+40℃, the average temperature is not more than 35℃ in 24 hours

2. Height above sea level:≤1000m;

3. 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%;

4. 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;

5. Environmental conditions: It should be installed in the places without dust, smoke, chemical erosion, combustible gas and saline fume pollution.

FAQ

Q1: Are you a manufacturer or a trader?

A1: We are a leading professional manufacturer.

Q2: How long is your delivery cycle?

A2: It depends on your product requirements and quantity. Generally, 5 to 10 working days are required for delivery

Q3: What is your after-sales service?

A3: We can answer users' questions solve their problems 24 hours a day, and provide comprehensive technical support for all our products promptly.

Q4: How do you solve quality problems?

A4: Please provide detailed photos of the quality problems. Our technical and quality inspection departments will analyze them. We will give a satisfactory solution within 2 days.

Q5: Do you accept customized services?

A5: We provide OEM/ODM services and can print your logo on the products. Our professional technical and quotation team can provide satisfactory projects according to your drawings and parameters.

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