Introduction
The XRNP Current-Limiting Fuses are engineered to safeguard voltage transformers in indoor AC 50Hz systems with rated voltages ranging from 3.6kV to 40.5kV. Certified by the National High-Voltage Quality Supervision and Testing Center and compliant with IEC 282-1 standards, these fuses provide critical protection against overloading and short-circuit faults, ensuring the longevity and reliability of electrical systems.
Key Features
- Wide Voltage Range: Compatible with 3.6kV to 40.5kV systems.
- High Breaking Capacity: Rated breaking current up to 50kA for superior fault interruption.
- Precision Protection: Tailored for voltage transformers with low-rated currents (0.2A to 6.3A).
- Robust Design: Compact, durable construction for indoor installations.
- Compliance: Meets IEC 282-1 and national safety standards.
Technical Specifications
Table 1: XRNP Fuse Series Electrical Parameters
| Type | Rated Voltage (kV) | Rated Current (A) | Rated Breaking Current (kA) | Dimensions Reference |
|---|---|---|---|---|
| XRNP1-□/□-□-1 | 7.2 (3.6), 12 | 0.2, 0.3, 0.5, 1, 2, 3.15 | 50 | Figure 1 |
| XRNP1-□/□-□-1 | 24 | 0.2, 0.3, 0.5, 1, 2, 3.15 | 50 | Figure 2 |
| XRNP1-□/□-□-2 | 12 | 2, 3.15 | 50 | Figure 3 |
| XRNP6-□/□-□-1 | 40.5 | 0.2, 0.3, 0.5, 1, 2, 3.15 | 31.5 | Figure 4 (Φ25) |
| XRNP6-□/□-□-3 | 40.5 | 0.2, 0.3, 0.5, 1, 2, 3.15, 4, 5 | 31.5 | Figure 5 (Φ30) |
| XRNP6-□/□-□-4 | 40.5 | 0.2, 0.5, 1, 2, 3.15, 5, 6.3 | 31.5 | Figure 6 (Φ41) |
Notes:
- For 7.2kV and 12kV systems, non-standard wiring configurations (Φ25 tube diameter) are available (refer to Figure 7).
- Dimensions vary by model (see referenced diagrams for exact measurements).
Overall and mounting dimensions(mm)
Applications
- Voltage Transformer Protection: Prevents damage from overcurrents in substations and power grids.
- Indoor Switchgear: Ideal for switchgear cabinets and control panels.
- Renewable Energy Systems: Protects transformers in solar/wind farms.
- Industrial Plants: Ensures stable operation of high-voltage equipment.
Why Choose XRNP Fuses?
- Customizable Ratings: Supports precise current selections (0.2A to 6.3A).
- High Interruption Capacity: Handles up to 50kA fault currents for critical systems.
- Compact Design: Space-saving Φ25 to Φ41 tube diameters for flexible installations.
- Certified Safety: Rigorously tested for compliance with IEC and national standards.
Installation & Maintenance
- Mounting: Follow dimensional diagrams (Figures 1–7) for correct alignment.
- Replacement: Use identical-rated fuses to maintain system integrity.
- Inspection: Regularly check for signs of wear or thermal stress.
The XRNP Current-Limiting Fuse Series offers unmatched protection for voltage transformers in high-voltage environments. With its versatile ratings (3.6kV–40.5kV), precision engineering, and IEC compliance, it is the go-to solution for safeguarding critical electrical infrastructure.
Enhance your system’s safety today—contact us for technical specifications and pricing!