disconnector outdoor type for power plant substation

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.

Technical Parameter

• 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

Material

• 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.