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Quick Details
Specifications
High Voltage Single-phase Isolator Switches
Description & Application
High voltage single-phase isolator switches are mainly applied in AC10~40.5kV, 50Hz 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 & Detail Show
Technical Parameter
| Insulator Material | Porcelain | |||
| 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 | ≥310mm | |||
Conductive contact parts---All the parts are over 20μ silver coating, preventing from oxidation easily.
Insulator--- Porcelain insulating post provides the performances with ultraviolet resistance, erosion resistance and waterproof.
1 piece per poly bag, each product is wrapped with poly foam inside and standard carton outside.
Feature & Advantages
1 Stainless steel disc spring bowl— It makes two contact parts much tighter, and supplies very low resistance.
2 Operation pull ring--- The lever design of pull ring and shift lock-pin ensures high breaking ability.
3. 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.
The design and test of high voltage single phase isolator switches are complied with the following standards:
DNK is a professional electrical manufacturer in China. We specialized in high voltage disconnect switch, fuse cutout, and all our products with ISO9001 approved.
We're always at your service, any question please feel free to contact us .

