Isolation Switch
12kV Isolation Switch GN30-12(D)
1. General Introduction
GN30-12 indoor rotary high-voltage isolation switch is a kind of traditional indoor equipment with rated voltage 12kV, three-phase AC 50Hz, especially for XGN2-12, XGN66-12, and HXGN-12 or similar high-voltage switchgears. It is mainly used to open/close circuit which is under voltage but without load by isolating the circuit breaker with main busbar as well as grounding so as to make sure the safety of maintenance person and others components.
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“D” means with earthing switch. Without “D” means without earthing switch.
2. Working Environment
-
- Ambient temperature: ≤ +40℃, ≥ -25℃; daily average difference within 15℃
- Application altitude: ≤1000 meters
- Relative humidity: daily average relative humidity ≤ 95%; monthly average relative humidity ≤ 90%
- Free from fire, explosion, heavy pollution, chemical corrosion and severe vibration.
- The earthquake intensity ≤ 8 degree
3. Demonstration of the Type
4. Main Parameter
4.1 Mechanical properties:
|
No. |
Item Description |
Unit |
Technical Data |
|
1 |
Distance between opened contacts |
mm |
|
|
2 |
Insulation distance to ground |
mm |
|
|
3 |
Matching range of contacts |
|
|
|
4 |
Phase to phase distance |
mm |
210 |
|
5 |
Closing synchronism among 3 phases |
ms |
|
4.2 Electrical properties:
|
No. |
Model No. of Switch |
Rated Voltage (kV) |
Rated Working Current (A) |
Rated Peak Withstand Current (kA) |
4S Short-time Withstand Current (kA) |
|
1 |
GN30-12(D)/400-12.5 |
12 |
400 |
31.5 |
12.5 |
|
2 |
GN30-12(D)/630-20 |
12 |
630 |
50 |
20 |
|
3 |
GN30-12(D)/1000-25 |
12 |
1000 |
63 |
25 |
|
4 |
GN30-12(D)/1250-31.5 |
12 |
1250 |
80 |
31.5 |
5. Dimensional Drawing for GN30-12(D)
|
Model |
A |
B |
C |
D |
E |
|
GN30-12(D) |
210 |
680 |
720 |
830 |
788 |
|
230 |
720 |
760 |
870 |
828 |
|
|
250 |
760 |
800 |
910 |
868 |
|
|
275 |
760 |
800 |
910 |
918 |
Remarks:
-
-
- Incoming and outgoing wiring: when the wiring terminal is vertical to the surface of switch chassis, it is vertical incoming and outgoing wiring; when the wiring terminal is horizontal with the surface of switch chassis, it is horizontal incoming and outgoing wiring.
- Definition of incoming and outgoing terminal: the ends away from circuit breaker are outgoing terminals; otherwise, the ends connecting with circuit breaker are incoming terminals.
- Operational direction: when facing the switchgear, it’s left-operated when the operational mechanism is on the left; it’s right-operated when the operational mechanism is on the right.
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6. Ordering information
-
-
- Please inform us the product model, phase to phase distance, rated voltage, rated current and whether with the operational mechanism or not.
- If the user has special requirements, please consult with us.
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12kV Isolation Switch GN19-12(C)
1. General Introduction
GN19-12(C) Indoor HV Isolation Switch has three-phase compact structure with vertical rotating switching blades. “Door” type switching blades can not only bring enhanced mechanical strength, but also increase the cooling area. The fixed contacts are casted as a whole part so its mechanical strength is very high. The shape of fixed contacts are flat which can reduce the distance of switching blades and therefore the dynamic stability is well improved. This kind of isolation switch can work with CS6-1 manual operation mechanism or JSXGN2 locking system.
GN19-12 is with horizontal mounting structure.
GN19-12C is with rotary switching blades and side-installed wall bushings and insulators.
2. Main Technical Parameter
|
Model |
Rated Voltage(kV) |
Rated Current(A) |
Dynamic Current(kA)(Peak) |
4s Thermal Current(kA)(Valid) |
|
GN19-12/400-12.5 GN19-12C/400-12.5 |
12 |
400 |
31.5 |
12.5 |
|
GN19-12/630-20 GN19-12C/630-20 |
12 |
630 |
50 |
20 |
|
GN19-12/1000-31.5 GN19-12C/1000-31.5 |
12 |
1000 |
80 |
31.5 |
|
GN19-12/1250-40 GN19-12C/1250-40 |
12 |
1250 |
100 |
40 |
3. Dimensional Drawing for GN19-12(C)
Drawing of GN19-12/400~1250
Drawing of GN19-12C/400~1250
