Active Member
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[China]
Address: 21/F, Building 1, No. 816,Jinghua Road, Hi-tech Zone,Ningbo, Zhejiang, P.R. China
Contact name:Tony ma
Ningbo Tian'an Jinghua Power Technology Co., Ltd. |
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252kv 2500A High Voltage Disconnect Switch Disconnector Isolator GW23
General overview
GW23(GT9)252D/2500-50 type double pole outdoor AC HV disconnector evolves from older generation,improving the conductive circuit over-heat, operation mechanism failure, metal parts corrosion and other defects. It has characteristics of beautiful appearance, simple structure, anti-corrosion, good earthquake resistance, reliable mechanical and electric properties, etc. It is a new generation of disconnectors. It is suitable for AC frequency 50HZ, rated voltage 220KV system. It electrically isolates HV lines, CB and other equipments under no load.
252kv 2500A High Voltage Disconnect Switch Disconnector Isolator GW23 Advantages
The product has advantages of beautiful appearance, simple structure, high performance of corrosion resistant and antiseismic, safe and reliable electric and mechanical property.
It is the matured product that our company recommends to HV electricity distribution network, and it’s also an upgrade product of disconnector. It is suitable for system with 50Hz AC frequency and 110kV rated voltage. It can be used in electricity isolation when HV line, circuit breaker and other electrical equipments are no-load.
252kv 2500A High Voltage Disconnect Switch Disconnector Isolator GW23 Technical parameters
| S/N | Name | Unit | Parameters | |
| 1 | Rated voltage | kV | 252 | |
| 2 | Rated current | A | 2500 | |
| 3 | Peak withstand current of disconnector and earthing switch (peak) | kA | 125 | |
| 4 | 3s short-time withstand current of disconnector and earthing switch (r.m.s) | kA | 50 | |
| 5 | Main circuit resistance of disconnector | μΩ | ≤130 | |
| 6 | 1min power frequency withstand voltage(r.m.s) | Phase-to earth(dry, wet) | kV | 395 |
| Fracture | 460 | |||
| 7 | Lightning impulse withstand voltage (1.2/50μs) | Phase-to earth | kV | 950 |
| Fracture | 1050 | |||
| 8 | Mechanical endurance test of disconnector and earthing switch | Times | 2000 for each | |
