Description
GN30-12(D) series Indoor high voltage disconnecting switches is a new type of touch rotating knife isolator , which special designed for XGN2-12 HV switchgear, with rated voltage 12kV and three phase AC 50Hz indoor device. It’s mainly used for making and breaking circuit under with voltage and no load.
Its main structure in three-phase chassis of the upper and lower two plane, fixed two set of insulator and contact, by rotating contactor, so as to realize switching on & off.
Environment condition
Ambient temperature: max. +40°C min. -25°C
Altitude: ≤1000m
Wind pressure: ≤700Pa (equals to wind speed 34m/s)
Relative humidity: daily average ≤95%, monthly average ≤90%
Earthquake intensity: ≤8 degree
No corrosive, explosive or flammable gas ,no violent vibration
Technical Data
| Model | GN30-12/ 400-12.5 | GN30-12/ 630-20 | GN30-12/ 1000-31.5 | GN30-12/ 1250-31.5 | GN30-12/ (1600-3150)-40 | |
| GN30-12D/ 400-12.5 | GN30-12D/ 630-20 | GN30-12D/ 1000-31.5 | GN30-12D/ 1250-31.5 | GN30-12D/ (1600-3150)-40 | ||
| Rated voltage (kV) | 12 | |||||
| Rated current (A) | 400 | 630 | 1000 | 1250 | 1600-3150 | |
| Rated short-time withstand current (kA) | 12.5 | 20 | 31.5 | 40 | ||
| Rated short-circuit duration (s) | 4 | |||||
| Rated peak withstand current (kA) | 31.5 | 50 | 80 | 100 | ||
| Rated insulating level | 1min. PF withstand voltage (kV) | phase to phase/ to earth: 42, across open contacts: 49 | ||||
| Lightning impulse withstand voltage (kV) | phase to phase/ to earth: 75, across open contacts: 85 | |||||
Outline & Mounting Dimensions
| GN30-12 | GN30-12D | |||||||||||||
| 400A, 630A | 1000A | 1250A | 400A, 630A | 1000A | 1250A | |||||||||
| A | C | A | C | A | C | A | B | C | A | B | C | A | B | C |
| ～560 | ～315 | ～580 | ～332 | ～580 | ～295 | ～550 | ～610 | ～240 | ～575 | ～615 | ～245 | ～580 | ～600 | ～295 |
