main application
The indoor high-voltage AC grounding switch is an essential safety feature in high-voltage power systems, allowing for secure grounding and isolation of electrical equipment during maintenance. Designed for voltage ratings from 12kV to 40.5kV, it offers robust short-circuit protection and reliable mechanical performance. Its streamlined design enables quick installation and straightforward operation, making it perfect for use in high-voltage switchgear and substations. Meeting stringent international safety standards, this grounding switch ensures dependable operation and enhances safety in various electrical applications.
The Electric Grounding Switch for Switchgear is used in substations, power plants, and industrial electrical systems to safely ground high-voltage switchgear during maintenance, repairs, or testing. Its main function is to provide a secure path to the ground, discharging any residual electrical energy from components like circuit breakers, transformers, and isolators, ensuring a safe working environment for maintenance personnel.
In substations, the grounding switch is used to isolate and ground switchgear before any maintenance or inspection work begins. This prevents electrical shock hazards and protects both personnel and equipment. In power plants, it is employed to safely ground electrical systems when isolating parts of the power grid or equipment for upgrades, maintenance, or emergency repairs.
The Electric Grounding Switch for Switchgear is designed for fast and reliable operation in high-voltage environments. It is equipped with safety features like grounding status indicators and interlocking mechanisms to prevent accidental operation. The switch ensures that all electrical energy is safely dissipated, enhancing safety, reducing downtime, and improving operational efficiency during maintenance or emergency work.
INDOOR HIGH VOLTAGE EARTHING SWITCH
Model No. and Description
Main technical parameters
| Rated voltage: | 12kV |
| Rated short-time tolerance current: | 31.5kA |
| Rated short-circuit duration: | 4S |
| Rated power frequency withstand voltage: | 42kV |
| Rated lightning impact withstand voltage: | 75kV |
| Mechanical service life: | 2,000 times |
Main technical parameters
| Main technical parameters | unit | data | ||
| rated voltage | KV | 24 | ||
| Rated short-time withstand current | KA | 31.5 | ||
| Rated short-circuit duration | S | 4 | ||
| Rated short-circuit switch-off current | KA | 80 | ||
| Rated peak withstand current | KA | 80 | ||
| Rated insulation level | Power frequency withstand voltage is 1min | KV | Extreme to ground and alternate | 65 |
| Lightning peak withstand voltage | 125 | |||
| mechanical life | Times | 2000 | ||
shape and installation size
Supporting table
| product prototype | Phase spacing A | Support B | principal axis C | pitch-row D | Plateau type ratio sensor height E |
| JNI 5-12 (7.2) / 31.5-150 | 150 | 424 | 535 | 396 | |
| JNI 5-12 (7.2) / 31.5-165 | 165 | 454 | 565 | 426 | 145, below 1,000 m 170, below 2,000 m 185, below 3,000 m 210, below 4,000 m |
| JNI 5-12 (7.2) / 31.5-210 | 210 | 544 | 655 | 516 | |
| JNI 5-12 (7.2) / 31.5-250 | 250 | 624 | 735 | 596 | |
| JNI 5-12 (7.2) / 31.5-275 | 275 | 674 | 785 | 646 |
ordering instruction
1. When ordering the grounding switch, indicate the product model, distance and whether equipped with is equipped (and indicate the display model).
2. Users should indicate the upper and lower positions of the timely moving and static contacts when the earth switch is installed in the cabinet.
3. If users have special requirements, please contact our company.
Factory
Certificate
Address
No.1083 Zhongshan East Road, Yinzhou District, Ningbo City, Zhejiang Province, China
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