Overview
The JN15-40.5 Indoor High-Voltage Earthing Switch is a critical safety component designed for medium-voltage power systems. Engineered to meet global standards, it provides reliable grounding protection for 40.5kV AC networks (50/60Hz) in substations, industrial plants, and renewable energy installations.
Key Features
Advanced Safety Design
- Ultra-Fast Operation: Achieves full grounding in under 0.5 seconds
- Dual Certification: Compliant with IEC 62271-102 and GB1985 standards
- Visual Position Indicator: Clear mechanical status display
Extreme Durability
- Wide Temperature Range: Operates from -25°C to +45°C
- Seismic Resistance: Withstands 8-magnitude earthquakes
- 2000 Mechanical Cycles: Maintenance-free operation lifespan
Flexible Integration
- Dual-Side Operation: Left or right manual control options
- Compact Design: Optimized for standard switchgear cabinets
- Interlock Compatibility: Works with KYN61-40.5 and GFC-40.5 panels
Technical Specifications
| Parameter | Value | Unit |
|---|---|---|
| Rated Voltage | 40.5 | kV |
| Rated Short-Time Current | 31.5 | kA |
| Short-Circuit Duration | 4 | s |
| Peak Withstand Current | 80 | kA |
| Power Frequency Withstand | 65 | kV |
| Lightning Impulse Withstand | 125 | kV |
| Mechanical Life | 2000 | ops |
Environmental Specifications
- Operating Altitude: ≤1000m (customizable up to 3000m)
- Pollution Degree: Class II
- Relative Humidity: ≤95% (daily average)
Application Scenarios
Power Distribution Systems
- Transformer secondary circuit grounding
- Busbar sectionalizing protection
Industrial Facilities
- Steel plant electric arc furnace safety
- Chemical plant emergency shutdown systems
Renewable Energy
- Wind farm collector station protection
- Solar PV plant combiner box grounding
Installation & Dimensions
Standard Configuration
| Component | Dimension (mm) |
|---|---|
| Phase Spacing | 280-400 |
| Overall Length | 600-810 |
| Operating Handle | 360° rotation |
Maintenance Guide
Pre-Operation Checks
- Verify insulation resistance ≥1000MΩ (2500V Megger test)
- Confirm contact resistance ≤50μΩ (DC 100A measurement)
Routine Maintenance
- Annual contact surface cleaning
- Biennial lubrication of rotating parts
- 5-year dielectric strength retest
Competitive Advantages
Performance Comparison
| Feature | JN15-40.5 | Industry Average |
|---|---|---|
| Activation Speed | 0.3-0.5s | 1.0-1.5s |
| Contact Material | CuCr50 Alloy | Electrolytic Copper |
| Warranty Coverage | 5 years | 2-3 years |
Frequently Asked Questions
Q: Can this switch be used in coastal environments?
A: Yes, optional anti-salinity coating is available for corrosion protection.
Q: Is motorized operation supported?
A: Manual standard version, with optional motorized actuator (24V/220V).
Q: Delivery lead time for bulk orders?
A: 4-6 weeks for standard configurations.