WenZhou，ZheJiang-
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dayday@mignzhee.com
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88 Xiangyun East Road,Yueqing City ,Zhejiang ,China
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WENZHOU MINGZHE ELECTRIC CO LTDFree·1YRS
SF6 Load Break Switch24kv 36KV
NegotiableUpdate on October 11
- Model
- Nature of the Manufacturer
- Manufacturer
- Product Category
- SF6 Load Break Switch
- Place of Origin
- City, Province
Overview
Rated Voltage：12 KV 24kV 36KVRated Current：630A；1250A
Product Details
| 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 |
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.
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