JN2-40.5 Indoor High-Voltage Grounding Switch

The JN2-40.5 indoor high-voltage grounding switch is an indoor high-voltage electrical appliance designed in accordance with the relevant grounding switches in GB1985-89 AC High Voltage Disconnectors and Grounding Switches, which is equivalent to IEC129-84 Disconnectors and Grounding Switches and IEC694-84 Common Terms for High Voltage Switchgear and Control Equipment.

JN2-40.5 grounding switch is applicable to 35KV and below three-phase AC 50HZ power system, and has voltage monitoring device. It has simple and reliable structure, small operating force, and convenient installation and commissioning. It is usually used in JYNI-40.5 and GFC-40.5 switch cabinets, and can also be put into use independently.

□ Model meaning

J  N  2 - 40.5 / 25 - ( ) - □ 

|  |  |    |     |     |    |______  Phase to phase distance (mm)

|  |  |    |     |     |___________  Sensor code

|  |  |    |     |_________________  Rated thermal stability current (KA)

|  |  |    |_______________________  Rated voltage (KA)

|  |  |____________________________  Design No

|  |_______________________________  Indoor device

|__________________________________  Earthing switch

□ Structure and working principle

The operating system of the grounding switch is designed as a spring energy storage form, which has the ability of fast closing. When the operating link is closed, the operating link drives the gear on the grounding switch, so that the main shaft rotates in the closing direction. The spring is compressed to store energy, and the spring energy is released when reaching a certain position (after the main shaft starts to move 30 ° from the lower limit and exceeds the central line) to achieve fast closing. At this time, the closing speed is independent of the operator's action, and this structure ensures that the grounding switch has the required closing capacity.

Similarly, when opening, the operating linkage drives the gear on the grounding switch to rotate along the opening direction, and the spring device stores energy. When the spindle rotation angle exceeds 45 °, the spring energy storage device releases energy to close the grounding switch.

This grounding switch can be configured with different types of high-voltage live display devices according to the user's requirements. Its supporting post insulator can be epoxy resin insulator or DXN passive live display device. Refer to the installation and operation manual of high-voltage live display device for the contents of display device.

□ Operating environment conditions □ Outline and installation dimensions

Ambient air temperature: upper limit+40 ℃; The lower limit is - 10 ℃ in general areas and - 25 ℃ in alpine areas.

Note: It is allowed to store and transport at - 30 ℃.

Altitude not exceeding 1000m

Relative humidity: the daily average value is not more than 95%, and the monthly average value is not more than 90%.

The seismic intensity shall not exceed 8 degrees.

Places free from fire, explosion, serious pollution, chemical corrosion and severe vibration.