JN15-24 Indoor AC High-Voltage Earthing Switch

The JN15-24 indoor AC high-voltage grounding switch (hereinafter referred to as the grounding switch) is designed for indoor grounding applications, operating at a rated voltage of 24 kV and a three-phase AC frequency of 50 Hz. Its performance complies with the GB1985 standard "AC High-Voltage Isolators and Grounding Switches," making it suitable for use in armored, withdrawable-type AC metal-clad switchgear. When electrical equipment is de-energized for maintenance work, the grounding switch must be closed according to the requirements outlined in the "Safety Work Procedures," creating an artificial grounded short circuit to ensure that maintenance personnel are reliably protected by "ground potential." Additionally, the switch is equipped with a live-display device, which prevents the grounding switch from being closed while energized. In the event of operator error, the switch still retains a certain level of closing capability, ensuring that other equipment inside the switchgear remains undamaged.

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Product Description

Product Overview

The JN15-24 indoor AC high-voltage earthing switch (hereinafter referred to as the earthing switch) is an indoor grounding device designed for use with a rated voltage of 24 kV and 50 Hz three-phase AC systems. Its performance complies with the GB1985 standard "AC High-Voltage Isolators and Earthing Switches," making it suitable for armored, withdrawable-type AC metal-clad switchgear. When electrical equipment requires maintenance and needs to be de-energized, the earthing switch must be closed according to the requirements outlined in the "Safety Work Procedures," creating an artificial grounded short circuit. This ensures that maintenance personnel are reliably protected by being at "ground potential." Additionally, the switch is equipped with a live-display device, which prevents the earthing switch from being closed while energized. In the event of operator error, the earthing switch still retains a certain level of closing capability, ensuring that other equipment inside the switchgear remains undamaged.

Model Description

Main technical specifications

Environmental Usage

1. Altitude ≤ 1000 m;
2. Ambient temperature range: -25°C to +40°C;
3. The daily average relative humidity should not exceed 95%, and the monthly average should not surpass 90%.
4. The surrounding air is not noticeably contaminated by dust, smoke, corrosive and/or flammable gases, vapors, or salt spray;
5. Areas free from fire and explosion hazards;
6. Locations with seismic intensity not exceeding 8 degrees and slope no greater than 5°.
Note: The above are the standard operating conditions according to GB/T 11022. If special environmental conditions are required—such as high altitude, heavy salt spray, or extremely cold or hot environments—the technical design can be modified and customized accordingly based on the above requirements.

Complete switchgear cabinets