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

Feature

In the case of electrical equipment maintenance: an electrical interval is provided and a visible disconnection point is provided to ensure the personal safety of maintenance personnel.

The disconnector can not be operated with load: it cannot be operated with rated load or large load, and it cannot be divided or combined with load current and short-circuit current, but it can be operated with small load and no-load line if there is an arc extinguishing chamber.

In the general power transmission operation, the disconnector should be closed first, and the circuit breaker or load switch should be closed later, and the circuit breaker or load switch should be disconnected first, and then the isolation switch should be disconnected after the power transmission operation.

When selected, it is the same as other electrical equipment, and its rated voltage, rated current, dynamic and stable current, thermal stable current, etc. must meet the needs of the use occasion.

The function of the disconnector is to disconnect the circuit of no load current, so that the equipment to be overhauled has an obvious disconnection point with the power supply, so as to ensure the safety of maintenance personnel, the disconnector does not have a special arc extinguishing device can not cut off the load current and short-circuit current, so it must be the circuit in the circuit breaker disconnection circuit before the disconnecting switch can operate the disconnecting switch.

Parameter

Model	Rated Operating Voltage (KV)	Maximum Operating Voltage (KV)	Rated Operating Current(A)	Dynamic Stabilization Current (Peak) KA)	2S Thermal Stable Current (KA) A)
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 Role

1. After the switch, establish a reliable insulation gap to separate the equipment or line that needs to be repaired from the power supply with an obvious disconnection point to ensure the safety of maintenance personnel and equipment.
2. According to the needs of operation, change the line.
3. It can be used for small currents in the distribution and closing lines, such as the charging current of bushings, busbars, connectors, and short cables, the capacitance current of switching equalizing capacitors, the circulation current when the double bus is replaced, and the excitation current of the voltage transformer.
4. According to the specific situation of different structure types, it can be used to divide and combine the no-load excitation current of a certain capacity transformer.

According to the different installation methods, high-voltage disconnectors can be divided into outdoor high-voltage disconnectors and indoor high-voltage disconnectors. Outdoor high-voltage disconnector refers to a high-voltage disconnector that can withstand wind, rain, snow, dirt, condensation, ice and heavy frost, etc., and is suitable for installation on terraces. According to the different insulating support structure, it can be divided into single-column disconnector, double-column disconnector, and three-column disconnector. Among them, the single-column disconnector directly uses the heavy straight space as the electrical insulation of the fracture under the overhead bus, so it has the obvious advantage of saving floor space, reducing the lead wire, and the opening and closing state is particularly clear. In the case of ultra-high voltage transmission, the effect of saving floor space is more significant after the single-column disconnector is used in the substation.

The disconnector is mainly used in low-voltage terminal power distribution systems such as residential buildings and buildings in low-voltage equipment.