SF6 load break switch, Electrical protection devices

Gas Insulated Load Break Switches > For underground line

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Product Name

Gas Insulated Load Break Switches

Purpose

Switching on/off the load current of padmounted power distribution line, for division and tapping of lines. SF6 load break switch.

Characteristic

Features of SF6 load break switch

Reliable Insulation and Interrupting Capacity
A perfect interruption is guaranteed because of excellent insulation and interrupting capacity of SF6 GAS.
SF6 GAS is incombustible, so there is absolutely no risk of fire.
By selecting a Puffer interruption method, where SF6 GAS in a cylinder is compressed, the product shows excellent making and breaking abilities.
Flash Over due to making/breaking surge and cable loading current, which occurs during vacuum interruption doesn’t occur.
High Safety and Maintenance Free
SF6 Gas is incombustible, which eliminates the danger of fire in any indoor/outdoor environment.
SF6 gas is non-toxic to human body and is therefore highly stable.
Maintenance is nearly unnecessary as the product has complete airtightness and simple control parts via TIG welding.
Water Proof & Rust Prevention
The body of the switch has been welded with stainless steel and covered with epoxy tar film, making it rust-proof.
SF6 load break switch
A compact design was achieved through SF6 Gas insulation method and simple control, which minimizes the room needed for installation

Classification	Characteristics
Model	SPS-4A / 4M (600A 4Way Auto/Manual) SPS-3A / 3M (600A 3Way Auto/Manual)
Rated Voltage	25.8 kV
Rated Current	600 A , 60 Hz
Rated Frequency	60 Hz
Rated Short-time Current	12.5 kA (rms). 1s
Rated Short Circuit Making Current	32.5 kA (Peak) 5times
Non-Voltage Switching	Main 5,000 times , Earth 1000 times
Rated Power Frequency Withstand Voltage	60 kV / 1min
Impulse Withstand Voltage	125 kV (1.2 x 50 ㎲)
Rated gas pressure ,at 20℃	0.07 MPa (gauge)

* Korean switchgear manufacturer, SnS Co., Ltd.