Technical Specifications
Overview
High Voltage Drop Out Fuse Protection
The HRW12 series drop out fuses are essential protection devices for 15-36kV distribution line transformers, serving as both backup protection and a switching mechanism. These units feature an obvious disconnection point that functions as an isolation switch, creating a safe environment for maintenance personnel. Designed for reliability and safety, these fuses comply with international IEC 60282-2 standards and allow for load-side switching operations.
Key Features
Core Benefits
- Visual indication of blown fuse via drop-out mechanism
- Functions as an isolation switch for maintenance safety
- Supports load-side shutdown and power transmission operations
- Corrosion-resistant metal hardware for outdoor durability
- Compliance Standards
- IEC 60282-2
Technical Specifications
Performance Metrics
| Model | Rated Voltage | Rated Current | Lightning Impulse (Ground/Fracture) | Power Frequency (Ground/Fracture) | Creepage Distance |
|---|---|---|---|---|---|
| HRW12-15/100 | 15kV | 100A | 125kV / 130kV | 50kV / 76kV | ≥525mm |
| HRW12-33/100 | 33kV | 100A | 250kV / 260kV | 95kV / 105kV | ≥1080mm |
Operating Environment
Environmental Limits
- Maximum Altitude: 3000m
- Temperature Range: -5℃ to +45℃
- Maximum Wind Speed (0-30m height): 35m/s
- Maximum Wind Speed (30-50m height): 45m/s
- Earthquake Intensity: ≤ Magnitude 5
- Air Quality Requirements
- No conductive dust, corrosive, flammable, or explosive gases in surrounding air.
Physical Dimensions
- Unit Height
- 385 mm
- Installation Angle
- 20 °
- Fastening Hardware
- M10 / 40mm
