High Voltage Drop Out Fuse
This drop out fuse automatically disconnects a circuit when an overcurrent condition occurs. It is designed for use in electrical power distribution systems.
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
