Load Break Switch (SF6)
Excellent interrupting and insulating abilities of SF6 GAS
Switching on/off the load current of process power distribution line, for division and tapping of lines
- 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.
- Operating Part
All the point of contact in all planes open and close at the same time. The speed of opening and closing is always the same regardless of operation.
Automatic switch can be operated not just electronically from the control box, but manually by controls on the body. It can be operated on the spot or via a remote.
- Water Proof and Rust Prevention
The body of the switch has been welded with stainless steel and covered with epoxy tar film, making it rust-proof.
- Compact Design
A compact design was achieved through SF6 Gas insulation method and simple control, which minimizes the room needed for installation.
|Rated Voltage (kV)||12 / 15 /17.5||24 / 25.8 / 27||36 / 38|
|Rated current (A)||630||400||630||630|
|Rated power frequency (Hz)||60 / 50|
|Rated short-time withstand current (kA)||25||12.5||16|
|Rated making current (kV peak)||62.5||32.5||40|
|Current breaking capacity||100% Load current (A)||630||400||630||630|
|Loop current (A)||630||400||630||630|
|Magnetizing current (A)||–||14||22||–|
|Cable-charging current (A)||10||25||20|
|Line charging breaking current (A)||1||1.5||2|
|Rated control voltage||DC 24V or AC 110V-220V|
|Number of no-load switching (time)||5,000|
|Insulation level||Power frequency withstand voltage (kV)||Phase to ground||36||60(50)||70|
|Between open contacts||40||60(50)||80|
|Control circuit to ground||2|
|Rated lighting impulse withstand voltage (kV)||Phase to ground||95||150(110)||170|
|Between open contacts||105||150(110)||195|
|Control circuit to ground||6|
|Rated gas pressure (Mpa) (at 20℃)||0.12||0.12||0.07|
|Bushing material||Porcelain / Polymer||Porcelain / Polymer||Polymer|
|Weight (kg)||120 / 100||130 / 110||120|
|Insulation medium||SF6 GAS|
|Operating method||Auto / Manual|
|Applied standard||IEC 62271-103, KEPCO spec.(ES-5925-0003)|