Sf6 Load break switch for indoor switchgear
Product Description
FLN⟩ -24kV SF6 load break switch is a switch equipment for medium voltage Switchgear, using SF6 gas as arc extinguishing and insulating medium. There are three working positions:open, closed, earth position in the switch. The compact size, easy installation, and fine adaptability to environment make the switch suitable for many different applications.
It can be divided into two types: FLN⟩-24kV ( K type single spring operating mechanism ), FLRN⟩ -24kV(A type double spring operating mechanism). The latter type could be equipped with Fuse combination, having control and protecting function, which can be used for power supply and substation as a protecting and control device, especially suitable for ring main unit, cable distribution box and switching substation.
Technical specification
| MAIN TECHNICAL SPECIFICATION | UNIT | FLN ⟩ -24D/T630-20 Load break switch | FLRN ⟩ -24D/T100-31.5 LBS + Fuse-combination units |
| Rated voltage | KV | 24 | 24 |
| Rated frequency | Hz | 50 | 50 |
| Rated current | A | 630 | 100 |
| Short-duration(1min) power frequency withstand voltage | KV | 65 | 65 |
| Lightning impulse withstand voltage | KV | 125 | 125 |
| Rated power frequency withstand voltage(5min) | KV | 24 | 24 |
| Rated short-time withstand current(Load break switch/3s) | KA | 20 | 20 |
| Rated short-time withstand current(Earthing switch/2s) | KA | 20 | 20 |
| Rated peak withstand current(Load break switch) | KA | 50 | 50 |
| Rated peak withstand current(Earthing switch) | KA | 50 | 50 |
| Rated short-circuit making current(Load break switch) | KA | 50 | 125 |
| Rated short-circuit making current(Earthing switch) | KA | 50 | 50 |
| Rated closed-loop dropout current | A | 630 | |
| Rated active load breaking current | A | 630 | |
| Rated cable-charging breaking current | A | 10 | 10 |
| Rated short-circuit breaking current | KA | 31.5 | |
| Rated transfer current | A | 1400 | |
| Fuse type | XRNT-12KV/100A | ||
| Fuse impact output energy | J | 1±0.5 | |
| Mechanical endurance LBS/Earthing switch | Time | 3000/2000 | 3000 |
| Air insulation distance of charged body and ground | mm | ≥180 | ≥180 |
| SF6 Gas pressure(Relative pressure at 20℃ ) | bar | 0.4 | 0.4 |
| Opening and Closing simultaneity | ms | ≤2 | ≤2 |
4K
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V Sf6 load break switch
Product Categories : Load break switch > SF6 load break switch
