Indoor High-Voltage Earthing Switch Manufacturer 35kV 38kV 40.5kV

  •  Indoor High-Voltage Earthing Switch Manufacturer 35kV 38kV 40.5kV
Key attributes
Brand ROCKWILL
Model NO. Indoor High-Voltage Earthing Switch Manufacturer 35kV 38kV 40.5kV
Rated voltage 40.5kV
Rated frequency 50/60Hz
Series JN22
Product descriptions from the supplier
Description

Product Overview

The JN22-40.5 Indoor High-Voltage Earthing Switch is a professional indoor high-voltage electrical device designed in compliance with international standards IEC 129-84 and IEC 694-84.
It is engineered for 35kV and below three-phase AC 50Hz power systems, and comes with a built-in voltage monitoring device. With a simple and reliable structure, low operating force, and easy installation and commissioning, it is typically integrated into JYN1-40.5 and GFC-40.5 switchgear cabinets, and can also be used independently. It provides a secure earthing circuit for maintenance, protecting personnel and equipment from residual voltage and accidental re-energization.

 Core Features

  • Standard Compliance: Fully compliant with IEC 129-84, IEC 694-84, ensuring global recognition and reliable performance.
  • Built-in Voltage Monitoring: Integrated voltage monitoring device prevents operation under live conditions, eliminating misoperation risks.
  • Low Operating Force: Precision mechanical transmission enables smooth, low-effort manual operation, reducing fatigue during frequent use.
  • Reliable & Durable: Epoxy resin insulation pillars offer excellent insulation and mechanical strength, with a mechanical life of ≥1000 operations.
  • Easy Installation: Modular design and standardized mounting interfaces enable quick integration into switchgear or standalone use.
  • Dual Application: Seamlessly integrates with JYN1-40.5 and GFC-40.5 switchgear, or functions as a standalone earthing protection device.

Technical Parameters

Parameter Specification
Rated Voltage 40.5kV (suitable for ≤35kV systems)
Rated Frequency 50/60Hz
Short-Time Withstand Current 40kA (4s)
Peak Withstand Current 100kA
Operation Mode Manual
Voltage Monitoring Integrated voltage sensing device
Insulation Resistance ≥1000 MΩ
Certifications IEC 129-84, IEC 694-84
Application Scenarios
  • Integrated protection for JYN1-40.5 and GFC-40.5 high-voltage switchgear
  • Maintenance earthing for 35kV power distribution substations and industrial plants
  • Standalone earthing for capacitor banks and transformer maintenance
  • Power grid retrofit projects requiring reliable medium-voltage earthing protection
  • Indoor applications in data centers, new energy stations and manufacturing facilities

Installation & Maintenance

  • Mounting: Install vertically in the switchgear cabinet, ensuring the earthing busbar connection is secure and ground resistance ≤1Ω.
  • Daily Inspection: Regularly check insulation pillars for contamination or damage, and verify tightness of all fasteners.
  • Operation Note: Only perform switching operations after confirming the system is de-energized via the voltage monitoring device.
  • Lubrication: Apply silicone grease to rotating joints every 6 months to maintain smooth operation.
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