Indoor High Voltage Isolating Switch GN19-12

1.GN19-12 series indoor high voltage isolating switch is suitable for power system with AC 50Hz, rated voltage 6,10kV and rated current 400,630,1250A
2.It is used as indoor switchgear for breaking and closing circuit under voltage and no load.
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Product Details

GN19-12 series indoor high voltage isolating switch is suitable for power system with AC 50Hz, rated voltage 6,10kV and rated current 400,630,1250A. It is used as indoor switchgear for breaking and closing circuit under voltage and no load.


Product function of GN19-12 series indoor high voltage isolating switch

1. After opening, establish a reliable insulation gap, and separate the equipment or line that needs to be repaired from the power supply with an obvious disconnection point to ensure the safety of the maintenance personnel and equipment.

2. According to the operation needs, connect the line

3. It can be used for small currents in opening and closing loop, such as the closing and opening harging current of bushings, busbars, connectors, short cables, the capacitor current of switching voltage equalizing capacitors, the circulating current when double busbars are switched, and the excitation current of voltage transformer Wait.

4. According to the specific situation of different structure types, it can be used to divide and close the no-load excitation current of a certain capacity transformer.

 

According to the different installation methods, high-voltage isolating switches can be divided into outdoor high-voltage isolating switches and indoor high-voltage isolating switches. Outdoor high-voltage isolating switch refers to the high-voltage isolating switch that can withstand the effects of wind, rain, snow, pollution, condensation, ice, and heavy frost. It can be divided into single-column disconnector, double-column disconnector, and three-column disconnector according to the structure of its insulating pillar structure. Among them, the single-column disconnector directly uses the vertical space as the electrical insulation of the fracture under the overhead busbar. Therefore, the The obvious advantages are to save floor space, reduce lead wires, and the opening and closing status is particularly clear. In the case of ultra-high voltage power transmission, the effect of saving floor space is even more significant after the single-post isolator is used in the substation.

Isolation switches are mainly used in low-voltage equipment such as residential houses and buildings.


Product features of GN19-12 series indoor high voltage isolating switch

1. When servicing electrical equipment, provide an electrical interval and a clearly visible disconnect point to protect the personal safety of maintenance personnel

2. Isolation switch cannot be operated with load: it can not be operated with rated load or large load, can not be divided, combined load current and short-circuit current, but the arc extinguishing chamber can be operated with small load and no-load line

3. For general power-on operation: close the disconnector first, then close the circuit breaker or load switch, and for power-off operation: first open the circuit breaker or load switch, and then disconnect the disconnector

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

 

The role of the disconnector is to disconnect the circuit without load current, so that the equipment being repaired has a clear disconnection point with the power supply to ensure the safety of maintenance personnel. The disconnector does not have a special arc extinguishing device, and cannot cut off the load current and short-circuit current Therefore, the disconnect switch must be operated only when the circuit is in the circuit breaker.


Technical parameters

Model

Rated voltage(kV)

Highest voltage(kV)

Rated

Current(A)

Dynamic stable current(peak)(kA)

2S Thermally stable current(kA)

GN19-10/400-12.5

10

11.5

400

31.5

12.5

GN19-10/630-20

10

11.5

630

50

20

GN19-10/1000-31.5

10

11.5

1000

80

31.5

GN19-10/1250-40

10

11.5

1250

100

40

GN19-10C1/400-12.5

10

11.5

400

31.5

12.5

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


Outline and installation dimension drawing

image

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