Industrial-Grade Protection for 24kV Power Systems
The JN15-24 High-Voltage Earthing Switch byPINEELEredefines electrical safety in medium-voltage networks. Engineered for 24kV AC systems with dual-side operation capability, this indoor grounding device combines 80kA short-circuit making capacity with IP2X-rated enclosure protection, making it ideal for substations, industrial plants, and critical infrastructure.
Competitive Advantages
1. Advanced Switching Mechanism
- 3ms ultra-fast earthing through optimized kinematic chain
- Bi-directional operation (left/right) for flexible cabinet layouts
- Visual position indicator with mechanical interlock
2. Engineered Resilience
- -25°C to +40°C wide-temperature operation
- 8-magnitude earthquake resistance
- Corrosion-proof zinc-aluminum alloy contacts
3. Maintenance-Optimized Design
- Tool-free contact inspection windows
- Lubrication-free pivot bearings
- 2000-operation mechanical lifespan
4. Compact & Adaptive
- Space-saving 140mm sensor height
- Horizontal/vertical mounting configurations
- Pre-drilled DIN-rail compatible base
5. Compliance Assurance
- Class II pollution resistance
- 95% humidity tolerance
- CE-marked manufacturing process
Technical Specifications
| Parameter | Phase-Earth | Phase-Phase | Unit |
|---|---|---|---|
| Rated Voltage | 24 | 24 | kV |
| Power Frequency Withstand (1min) | 65 | 65 | kV |
| Lightning Impulse Withstand | 125 | 125 | kV |
| Short-Time Withstand Current | 31.5 | – | kA |
| Short-Circuit Duration | 4 | – | s |
| Peak Withstand Current | 80 | – | kA |
| Mechanical Endurance | 2000 | – | ops |
Environmental Ratings
- Altitude: ≤1000m ASL
- Pollution Degree: II
- Humidity: ≤95% daily average
Application Scenarios
Energy Sector
- Transformer secondary side grounding
- Ring Main Unit (RMU) protection
Industrial Facilities
- Motor control center safety isolation
- Mining conveyor system shutdown protocols
Renewable Installations
- Solar farm combiner box protection
- Wind turbine step-up transformer grounding
Installation & Maintenance Guide
Stage 1: Pre-Installation Checks
- Verify cabinet dimensions ≥400×600×800mm
- Confirm busbar alignment tolerance ±1.5mm
Stage 2: Operational Testing
- Contact resistance: ≤50μΩ (DC 100A)
- Insulation resistance: ≥1000MΩ (2500V megger)
Stage 3: Lifetime Maintenance
- Annual contact polishing
- 5-year dielectric strength re-test
- 10-year full mechanism overhaul
Why Professionals Choose JN15-24
Cost Efficiency
30% lower lifecycle costs vs. conventional switches
Safety Certification
Third-party validated arc-flash protection
Future-Proofing
Compatible with smart grid monitoring systems
Comparative Analysis
| Feature | JN15-24 | Market Average |
|---|---|---|
| Operation Speed | ≤0.5s | 1.2-2s |
| Altitude Compensation | Built-in | External kit required |
| Contact Material | CuCr50 alloy | Electrolytic copper |
| Warranty Period | 5 years | 3 years |
FAQ Section
Q: Can it replace existing 12kV switches?
A: Yes, with busbar adapter kits (sold separately).
Q: Is forced-air cooling required?
A: Not below 2000A continuous current.
Q: Lead time for custom configurations?
A: 4-6 weeks for special coatings/actuators.
H2: Request Technical Documentation
Download CAD drawings, test reports, and IEC 62271-102 compliance certificates. Contact Liyond engineers for application-specific solutions.
