GN30-12(D) indoor high-voltage isolating switch is a new rotary contact knife type isolating switch, used in in the AC 50Hz power system with rated voltage of 12kV and below for losing and opening circuit under the voltage without load. The entire product structure is located on two upper and lower planes of the three-phase common bottom frame with two sets of fixed insulator and contact to turn on and off the switch by rotating the contact knife. The product features with compact design, small occupation space, strong insulation capacity, and easy installation and adjustment.
Overview:
1.1 Main applications:
GN30-12(D) indoor high-voltage isolating switch is a new rotary contact knife type isolating switch, used in in the AC 50Hz power system with rated voltage of 12kV and below for losing and opening circuit under the voltage without load. The entire product structure is located on two upper and lower planes of the three-phase common bottom frame with two sets of fixed insulator and contact to turn on and off the switch by rotating the contact knife. The product features with compact design, small occupation space, strong insulation capacity, and easy installation and adjustment.
Technical Parameters:
| Product Model & Spec. Parameter Item |
GN30-12/400-12.5 | GN30-12/630-20 | GN30-12/1000- 31.5 | GN30-12/1250- 31.5 | |
| GN30- 12D/400-12.5 |
GN30-12D/630-20 | GN30- 12D/1000-31.5 |
GN30- 12D/1250-31.5 |
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| Rated voltage (kV) | 12 | ||||
| Rated current (A) | 400 | 630 | 1000 | 1250 | |
| 4S rated short-time withstand current (kA) |
12.5 | 20 | 31.5 | ||
| Rated peak withstand current (kV) | 31.5 | 50 | 80 | ||
| Rated insulation level |
Power frequency withstand voltage for 1 minute (kV) |
Phase-phase voltage, voltage to ground:42; Break voltage:48 | |||
| Lighting impulse voltage (kV) | Phase-phase voltage, voltage to ground:75; Break voltage:85 | ||||
3.Operating Conditions:
1.Ambient temperature: Upper limit: +40ºC; Lower limit: -15ºC;
2.The altitude does not exceed 1,000 meters.
3.For relative air humidity, the daily mean is not greater than 95%, and the monthly mean is not greater than 90%;
4.The earthquake intensity does not exceed 8 magnitude scales.
5.Installed in places free of fire, explosive risk, chemical corrosion, and violent vibration.
6.The installation site shall be free of flammable substance, explosive risk, chemical corrosion and violent vibration.
4.Outline and Installation Dimensions:
GN30-12
GN30-12D
| Phase sapcing p Dimensions Model |
210 | 230 | 250 | ||||||||||||
| A | B | C | D | E | A | B | C | D | E | A | B | C | D | E | |
| GN30-12/400、 630 | 680 | 282 (Parallel on both sides) 363 (Vertical on both sides) |
510 (Parallel on both sides) 575 (vertical on one side) 665 (Vertical on both sides) |
820 | 720 | 282 (Parallel on both sides) 363 (Vertical on both sides) |
510 (Parallel on both sides) 575 (vertical on one side) 665 (Vertical on both sides) |
860 | 760 | 282 (Parallel on both sides) 363 (Vertical on both sides) |
510 (Parallel on both sides) 575 (vertical on one side) 665 (Vertical on both sides) |
900 | |||
| GN30-12/1000 | |||||||||||||||
| GN30-12/1250 | |||||||||||||||
| GN30-12D/400、 630 | 615 | 615 | 615 | ||||||||||||
| GN30-12D/1000 | |||||||||||||||
| GN30-12D/1250 | |||||||||||||||
