GN19-12 Indoor High-Voltage Isolation Switch | Reliable Power Disconnection

Parameter

Operating Steps
Power-On Operation: First close the isolating switch, then close the circuit breaker or load switch.
Power-Off Operation: First open the circuit breaker or load switch, then open the isolating switch.

Model Selection
When selecting an isolating switch, ensure that its rated voltage, rated current, dynamic stability current, and thermal stability current meet the requirements of the application. The primary role of the isolating switch is to disconnect circuits with no load current, allowing for safe maintenance. Before operating the isolating switch, ensure that the circuit breaker has disconnected the circuit.

Safety Tips
The isolating switch does not have a specialized arc-extinguishing device; do not operate it under load or short-circuit conditions to ensure the safety of equipment and personnel.

Model	Rated Operating Voltage (KV)	Maximum Operating Voltage (KV)	Rated Operating Current(A)	Dynamic Current (Peak) (KA)	2S Thermal Current (KA)
GN19-10400-12.5	10	11.5	400	31.5	12.5
GN19-10/830-20	10	11.5	630	50	20
GN19-10/1000-31.5	10	11.5	0	80	31.5
GN19-10/1250-40	10	11.5	250	100	40
GN19-10C1/400-12.5	10	11.5	400	31.5	2.5
GN19-C110/630-20	10	11.5	630	50	20
GN19-10C1/1000-31.5	10	11.5	1000	80	31.5
GN19-10C1/1250-40	10	11.5	1250	100	40

Product Functions
1. Isolation and Safety: After disconnection, a reliable insulating gap is established to ensure that the
2. Line Switching: Switch and connect the line according to operational requirements.
3. Low Current Switching: Used for switching small currents in the circuit, such as charging currents of bushings, busbars, connectors, short cables, capacitor currents of switching voltage equalization capacitors, circulating currents during double bus switching, and excitation currents of voltage transformers.
4. Transformer Exciting Current: Depending on the specific circumstances of different structural types, it can switch the no-load excitation current of transformers of certain capacities.

Types of Medium-Voltage Isolators
Medium-voltage isolators can be divided into outdoor and indoor types based on installation methods:
- Outdoor Medium-Voltage Isolators: Capable of withstanding natural factors such as wind, rain, snow, dirt, condensation, ice, and frost, suitable for installation on outdoor platforms.

- Indoor Medium-Voltage Isolators: Suitable for indoor environments, typically requiring higher insulation performance.

Based on the structure of the insulation support, they can be further divided into:
- Single-Column Isolation Switch: Directly use vertical space below the overhead busbar as electrical insulation, saving space, reducing connecting conductors, and providing clear disconnection states, particularly suitable for ultra-high voltage transmission.
- Double-Column Isolation Switch: Suitable for higher current demands, providing greater stability.
- Three-Column Isolation Switch: Suitable for more complex power systems, offering better load capacity and reliability.