SF6 High Voltage load Break switch

SF6 load break switches have remarkable advantages. They possess excellent arc extinguishing and insulating properties, with diverse functions and simple operation. They are highly reliable, have a long lifespan and require little maintenance. The operation performance is good, and they can be controlled in various ways. They can adapt to harsh environments and ensure safety, being fully sealed and having a high protection level. They occupy a small area and have low costs, and can be combined and expanded, showing great flexibility. They are suitable for a variety of places and requirements.

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Product Description

The FL(R)N36-12D indoor high-voltage SF6 load switch is an indoor switchgear with a rated voltage of 12KV. It uses SF6 gas as the arc extinguishing and insulating medium, and has three positions: closing, opening, and grounding. It is characterized by its small size, convenient installation and use, and strong adaptability to the environment.

By combining the FL(R)N36-12D indoor high-voltage SF6 load switch with other electrical components, control and protection functions can be realized. It can be used for the control and protection of electrical equipment in industrial and mining enterprises, civil power supply systems, and secondary substations. Among them, the load switch-fuse combination electrical appliance matches the protection characteristics of the transformer and is especially suitable for ring network power supply units.

The FLN36-12D/630-20 indoor high-voltage SF6 load switch (hereinafter referred to as the load switch) and the FL(R)N36-12D/100-50 combination electrical appliance (hereinafter referred to as the combination electrical appliance) comply with the national standards GB3804 "3~63KV AC High-voltage Load Switches" (EQV IEC60265-1) and GBL6926 "AC High-voltage Load Switch-Fuse Combination Electrical Appliances" (EQV IEC420).

Parameter of the SF6 high voltage circuit breakers

No	Item		Unit	Parameter
1	Rated voltage		kV	12	24
2	Rated frequency		Hz	50/60
3	Rated current		A	630/800
4	1min Power frequency withstand voltage	wet	kV	38	50
4	1min Power frequency withstand voltage	dry	kV	48	60
5	Lightning impulse withstand voltage		kV	75	125/150
6	Rated short circuit breaking current (peak)		kA	N/A	N/A
7	Rated active load and close circuit breaking current		A	630	630
8	Rated transferring current		A	1700	1200
9	Rated short circuit making current (peak)		kA	50	40
10	Rated cable(line) charging breaking current		A	50 and 10
11	Cable charge breaking current in earthing fault		A	20	20
12	Rated withstand current (peak)		kA	50	40
13	Short time withstand current (2s)		kA	31.5	25
14	Mechanism life		times	5000	5000