SF6 Switch

General Characteristics

Rated Voltage (kV)

Insulation level*

50Hz-1min (kV rms)

Insulation

NegotiableUpdate on October 11

Model

Nature of the Manufacturer: Manufacturer

Product Category: SF6 Load Break Switch

Place of Origin: City, Province

Online Consult Contact Information

Overview

SF6 Load switches and combiners (hereinafter referred to as "load switches" and "combiners") are suitable for three-phase ac power systems of 10kV and 50HzThis product as industrial and mining enterprises, high-rise buildings, residential quarters, pre-installed type substation, for the breaking, closing load current, the fault current, control and protection circuit and the power distribution transformer

Product Details

1.2/50μs (kV peak)	Insulation	60	75		95	125	170
	Isolation	70	85		110	145	195
Short-time withstａnd current
Switch(kA/1s)	25	630A
	20	630A
	16	630A
	12.5	630A
Disconnector(kA/1s)	25	630-1250A					1250A
	20	630-1250A
	16	630-1250A
	12.5	630-1250A
Maximum breaking capacity
Transformer off load (A)	16
Cables off load (A)	31.5						50
Switch (A)	630
Fuse-switch** (kA)	25			20
The making capacity is equal to 2.5 times the short-time withstａnd current. () Equipped referring to installation guide, and setting up at an altitude below 1000m. (*) Depending on fuse characteristics
Endurance
units		Mechanical endurance		Electrical endurance
Switch Fuse-switch		IEC62271-103 1000 operations Class M1		IEC62271-103 100 breaks at In, p.f.=0.7 Class E3
Disconnector		IEC62271-102 1000 operations
Temperatures
The products must be stored in a dry area free from dust and with limited temperature variations		For stocking: from -40℃ to +70℃ For working: from -5 ℃ to +40℃ Other temperatures, consult us
Standards FLN36 units meet all the following recommendations: Switch: IEC62271-103: High voltage switches - Part 1: switches for rated voltages above 1 kV ａnd less or equal to 52 kV. Disconnector: IEC 62271-102: High-voltage alternating current disconnectors and earthing switches. Switch /disconnector: IEC 62271-200: A.C. metal-enclosed switchgear and controlgear for rated voltage above 1 kV and up to including 52 kV. VPIS: IEC 62271-206: High-voltage prefabricated switchgear and controlgear assemblies-Voltage presence indicating systems

Switch or disconnector and earthing switch

Gas tightness

The three rotating contacts are placed in an enclosure filled with gas to a relative pressure of 0.4 bar (400 hPa) for FLN36 12-24 kV and 1 bar (1000 hPa) for FLN36 36 kV.

It satisfies “sealed pressure system" requirements and seal tightness is always factory checked.

Operating safety

the switch may be in one of three positions: “closed", “open", or “earthed", representing a natural interlocking system that prevents incorrect operation.

Moving-contact rotation is driven by a fast-acting mechanism that is independent of the action of the operator.

the device combines the breaking and disconnection functions.

the earthing switch placed in the SF6 has a short-circuit making capacity, in compliance with standards.

any accidental over-pressures are eliminated by the opening of the safety membrane, in which case the gas is directed toward the back of the unit, away from the operator.