Outdoor type disconnector for power plant substation
outdoor type high voltage disconnector switch is mainly applied in AC10~40.5kV, 50Hz/60HZ power system. It is widely used in electric power, railway, mining and oil field. And all fittings not only reasonably & integrally designed but also made of high quality materials.
- Insulator Material: Epoxy Resin
- Rated Voltage: 12kV
- Rated Current: 200A,400A,630A,1000A,1250A
- Rated Frequency : 50Hz,60Hz
- Rated Lightning Impulse Voltage: Withstand phase to earth 95kV
across isolating distance 110kV
- Rated Power Frequency : Withstand Voltage phase to earth 50kV
across isolating distance 60kV
- Distance between Interrupting Points: ≥205mm
- Rated Short Time Current Withstand: 25kA,20kA,16kA/4S
- Rated Peak Current Withstand: 40kA,50kA
- Mechanical Life : 2000 times
- Creepage-distance: ≥410mm
- Conductive contact parts—All the parts are over 20μ silver coating, preventing from oxidation easily.
- Insulator—Epoxy resin insulator provides the performances of strong environment adaptability, self-cleaning ability, ultraviolet resistance and waterproof.
- Base plate—Stainless steel or hot galvanizing base ensures reliable manipulation & corrosion resistance.
Feature & Advantages
- Stainless steel disc spring bowl— It makes two contact parts much more tighten, and supplies very low resistance.
- Operation pull ring— The lever design of pull ring and shift lock-pin ensures high breaking ability.
- Contact methods—using surface contact instead of point contact, the device prevents too large resistance leading to heat too fast, and provides fire protection as well.