As a professional Earthing Switch manufacturer in China, Wzonpa provides the Medium-voltage Indoor Earth Leakage Switch applicable 12kV medium-voltage switchgear systems, ensuring safe grounding, fast operation, and long-term reliability in industrial power distribution.
The Medium-voltage Indoor Earth Leakage Switch is a three-pole grounding device installed in medium-voltage switchgear, including applicable KYN28 cabinets and ring main units. It provides a controlled grounding path when the relevant circuit has been isolated according to the operating procedure, supporting safer inspection and maintenance work.
Safe Grounding Connection
Provides a defined conductive path to earth for applicable maintenance and fault-handling procedures.
Clear Position Indication
Provides a visible indication of the earthing switch position to support safe operation and maintenance procedures.
Short-Circuit Performance
Designed to meet the specified short-circuit making and withstand requirements of the applicable model and system configuration.
1. Durable Contact System
High-quality copper contacts provide reliable electrical conductivity and resistance to mechanical wear. Selected insulation materials support stable electrical performance during service.
2. Spring-Assisted Mechanical Operation
The spring-assisted mechanism enables rapid and consistent opening and closing of the grounding blade, helping establish a firm grounding connection when required.
3. Compact Switchgear Integration
The compact structure is designed for installation in specified indoor medium-voltage switchgear, helping simplify equipment integration and maintenance.
4. Maintenance Safety Support
The earthing switch provides a controlled grounding function during inspection and maintenance procedures when operated according to the applicable switching sequence and safety requirements.
1.Closing Operation
The spring mechanism drives the grounding blade into the fixed contact, establishing the grounding connection for the isolated circuit.
2. Opening Operation
The grounding blade disengages from the fixed contact, removing the grounding path after the equipment has been properly cleared for energization.
Power Infrastructure
Substations and distribution networks
Power generation plants
Industrial Facilities
Switch rooms and manufacturing plants
Medium-voltage electrical systems
Maintenance Safety
Provides grounding during inspection and repair
Ensures compliance with safety procedures
Environmental Requirements
Ambient temperature: -10°C to +40°C
Installation altitude: ≤1000m
Humidity & Seismic Conditions
Relative humidity: ≤95% daily average, ≤90% monthly average, subject to the applicable specification
Seismic performance: up to intensity VIII, where specified
Installation Conditions
Pollution level: II
Installation dimensions according to the selected model
Proven manufacturing expertise in China
Strict compliance with GB3906-91 and IEC standards
Reliable performance in harsh industrial environments
Cost-effective solution without compromising quality
| Specification | E | F | G | H | D |
| JN17-12/40-210 | 210 | 50 | 185 | 655 | 516 |
| JN17-12/40-220 | 220 | 50 | 185 | 675 | 536 |
| JN17-12/40-230 | 230 | 50 | 185 | 695 | 556 |
| JN17-12/40-250 | 250 | 50 | 185 | 735 | 596 |
| JN17-12/40-275 | 275 | 50 | 210 | 810 | 646 |
1. What is the main purpose of a Medium-voltage Indoor Earth Leakage Switch?
It is used to safely connect electrical circuits to ground during maintenance or fault conditions, ensuring operator safety and system protection.
2. Can this switch operate under short-circuit conditions?
Yes, it is designed with robust materials and a spring mechanism to ensure reliable performance even during short-circuit scenarios.
3. Where is the Medium-voltage Indoor Earth Leakage Switch typically installed?
It is commonly installed in medium-voltage switchgear, substations, industrial plants, and ring main units.
4. Is customization available for different system requirements?
Yes, specifications such as pole distance, display devices, and connection components can be customized to meet specific project needs.
The Wzonpa Medium-voltage Indoor Earth Leakage Switch combines safety, durability, and efficiency, making it an essential component for modern power distribution systems. Welcome to contact us and get a quote now!
Address
No. 58 Binhainan Fourth Road, Economic Development Zone, Yueqing City, Wenzhou City, Zhejiang Province, China
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