• 40.5kV 72.5kV 126kV 252kV 363kV 500kV 800kV HV Grounding Switch
  • 40.5kV 72.5kV 126kV 252kV 363kV 500kV 800kV HV Grounding Switch
40.5kV 72.5kV 126kV 252kV 363kV 500kV 800kV HV Grounding Switch
discuss personally
Model
JW8-800-63
JW8-550-63
JW8-363-63
JW6-252-50
JW6-126-40
JW6-72.5-40
JW6-40.5-40
Basic info
Brand ROCKWILL
Model NO. 40.5KV 72.5KV 126KV 252KVseries high voltage earthing switch
Rated voltage 550kV
Series JW6(8) Series
Product Detail

Description

The JW6/8 series high-voltage grounding switches feature a three-single-pole configuration integrated with an operating mechanism. Each single pole comprises a base, a pillar insulator, and a conductive rod: the rod is mounted on the base, while the static contact is positioned at the top of the insulator.

Driven by the operating mechanism, the conductive rod rotates upward from the horizontal position via transmission components, latching or inserting into the static contact to achieve switch closure; the opening process reverses this motion.

Main Features:


  • Streamlined Design & Versatility:The product’s simple, rational structure enables effortless assembly, transportation, installation, and debugging, adapting to diverse field requirements.

  • High-Performance Conductive Components:Constructed from high-strength alloy profiles, the conductive rods offer excellent electrical conductivity, robust mechanical strength, and lightweight design. Their superior anti-corrosion properties ensure prolonged service life in harsh environments.

Technical parameter:

1732242955389.png

How is the indoor high-voltage AC grounding switch electrically tested?

  • Insulation Resistance Test: Use an insulation resistance tester to measure the insulation resistance of the grounding switch. The insulation resistance value should meet the product standards and relevant electrical codes. Generally, for indoor high-voltage AC grounding switches, the insulation resistance should be in the range of several gigohms or more to ensure good insulation performance during operation and prevent leakage accidents.

  • Loop Resistance Test: Measure the loop resistance of the grounding switch using a dedicated loop resistance tester to check if the contact points are in good condition. The loop resistance value should fall within the specified range. If the loop resistance is too high, it may cause significant heating when current flows through the grounding switch, affecting its normal operation.

  • Grounding Performance Check: Ensure that the grounding connection is reliable and that the grounding resistance meets the requirements. If the grounding resistance is too high, it may prevent the current from being effectively discharged to the ground during a fault, thus failing to provide adequate protection for maintenance personnel and equipment.

Know your supplier
ROCKWILL
Rockwill Electric Group Global Manufacturer of High voltage and medium-voltage power equipment and smart grid solutions. Headquartered in Wenzhou, China. Serving 100+ countries with quality, innovation, and trust. What We Offer: • HV-MV switchgear (VCB, SF₆ circuit breakers, RMU, GIS) • Distribution transformers and substations • Smart grid and monitoring systems • Solar, wind, EV charging, and energy storage solutions • EPC turnkey power projects Certified: ISO 9001 / ISO 14001 / ISO 45001
Main Categories
High Voltage Electrical Apparatus
Business Type
Design/Manufacture/Sales
Highest Annual Export (USD)
$150,000,000
Professional Experience
16 years
Workplace
108000m²m²
占位
占位
Related Knowledges
What is the difference between a dielectric and an insulator?
What is the difference between a dielectric and an insulator?
Dielectrics and insulators are distinguished primarily by their applications. One of the main differences is that a dielectric can store electrical energy by becoming polarized in an electric field, whereas an insulator resists the flow of electrons to prevent current conduction. Other key differences between them are outlined in the comparison chart below.Definition of DielectricA dielectric material is a type of insulator that contains few or no free electrons. When subjected to an electric fi
Edwiin
08/30/2025
Fault Analysis and Treatment of Oil-Immersed Transformers
Fault Analysis and Treatment of Oil-Immersed Transformers
Oil Leakage at Welded JointsOil leakage at welded joints primarily stems from poor welding quality, such as incomplete or detached welds, and defects like pinholes and gas pores. Although oil-immersed transformers are initially coated with solder and paint during manufacturing, potentially masking these issues temporarily, the defects tend to surface during operation. Additionally, electromagnetic vibration can cause weld cracks, leading to oil leakage.To resolve such leaks, the first critical s
Edwiin
08/29/2025
What losses occur during operation of the transformer? How to reduce losses?
What losses occur during operation of the transformer? How to reduce losses?
Transformers experience various types of losses during operation, primarily categorized into two main types: copper losses and iron losses.Copper LossesCopper losses, also known as I²R losses, are caused by the electrical resistance of the transformer windings—typically made of copper. As current flows through the windings, energy is dissipated in the form of heat. These losses are proportional to the square of the load current (I²R), meaning they increase significantly with high
Rockwell
08/29/2025
Cable Fault Detection, Testing, Location and Repair
Cable Fault Detection, Testing, Location and Repair
I. Methods for Cable Testing and Inspection:Insulation Resistance Test: Use an insulation resistance tester to measure the insulation resistance value of the cable. A high insulation resistance value indicates good insulation, while a low value may suggest insulation problems requiring further investigation.Voltage Withstand Test: Apply a high-voltage test using a high-voltage tester to verify whether the cable can withstand high voltage under its rated operating conditions. Under normal circums
Leon
08/29/2025
Cable Quality Inspection and Cable Detection & Testing
Cable Quality Inspection and Cable Detection & Testing
Power cable quality inspection and cable testing are conducted to ensure that the cable's quality and performance meet specified requirements, thereby guaranteeing the safe and stable operation of power systems. Below are some common contents of power cable quality inspection and cable testing:Visual Inspection: Check the cable surface for physical defects such as damage, deformation, or scratches to ensure the cable's exterior is intact.Dimensional Measurement: Measure dimensional parameters su
Edwiin
08/29/2025
Transformer Detection, Testing, Maintenance and Servicing
Transformer Detection, Testing, Maintenance and Servicing
Transformer testing, inspection, and maintenance are essential tasks to ensure normal operation and extend the service life of transformers. Below are some recommended steps:Visual Inspection: Regularly inspect the transformer's exterior, including the enclosure, cooling system, and oil tank. Ensure the enclosure is intact, free from corrosion, damage, or leakage.Insulation Resistance Testing: Use an insulation resistance tester to check the transformer's insulation system. Verify that the insul
Vziman
08/29/2025
×
Inquiry
Download
IEE-Business is dedicated to serving the personnel in the global power industry.
Join IEE-Business, not only can you discover power equipment and power knowledge, but also canhnd like - minded friends!