The indoor High-Voltage Grounding Device is a safety protection device designed for high-voltage power systems, used to effectively isolate electrical equipment from the grid and ground it, ensuring the safety of personnel and equipment during maintenance or inspection. This product is typically suitable for voltage levels ranging from 12kV to 40.5kV, with strong short-circuit current withstand capabilities and reliable mechanical operation performance. Its compact structure, easy installation, and flexible operation make it widely applicable in high-voltage switchgear and substations. Designed to meet both national and international standards, it ensures long-term stable operation in complex power environments.
Indoor High-Voltage Grounding Device is an internationally advanced product developed by advanced technology, whose structure is assembly.
After comprehensive assessment, the performance meets the requirements of GB1985-2004 AC high voltage isolating switch and grounding switch and IEC62271-102:2002, which is applicable to 3-12KV three-phase AC 50Hz power system; it has short-circuit off-off capability to protect other electrical equipment in the switchgear from damage, and can be used with various high voltage switchgear, or as grounding protection during maintenance of high voltage electrical equipment.
Use environmental conditions
1. The altitude shall not exceed 1000m;
2. Surrounding air temperature: upper limit + 40℃, lower limit-25℃;
3. the earthquake intensity does not exceed 8 degrees;
4. The daily average relative humidity shall not be greater than 95%, and the monthly average shall not be greater than 90%;
5. filth grade:11。
INDOOR HIGH VOLTAGE EARTHING SWITCH
Model No. and Description
Main technical parameters
Main technical parameters
unit
data
rated voltage
KV
12
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
42
Lightning peak withstand voltage
75
mechanical life
Times
3000
JNI 5-12 (7.2) / 31.5Ground switch 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.
For inquiries about low voltage switchgear, high voltage insulators, high voltage earthing switch or price list, please leave your email to us and we will be in touch within 24 hours.
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