Arc Flash Protection Relay for MV Power Distribution
This arc flash protection relay is designed for MV and HV switchgear applications. It detects arcs by monitoring current, voltage, and electric power, quickly disconnecting the power supply to reduce fire risk.
Technical Specifications
Overview
Advanced Arc Flash Protection
The AFR-S is a high-performance digital feeder protection relay specifically engineered for MV and HV switchgear arc flash protection. By utilizing a dual-criteria detection principle—monitoring both arc light and overcurrent—it ensures rapid disconnection of power supplies to protect personnel and equipment. This reliable system is ideal for demanding environments including wind farms, photovoltaic stations, and large-scale industrial power distribution.
Key Features
Core Features
- Complete digital design with simple operating principles
- Double criterion of over-current and arc for high reliability
- Optical fiber transmission for electromagnetic interference resistance
- Programmable logic for trip exit configurations
- Comprehensive fault information recording
- Fast total fault clearing time
Performance Metrics
Response Times
10 ms
Pure Arc Protection
20 ms
Double Criterion Protection
Power & Consumption
- Power Supply Range
- AC/DC 85 ~ 265V
- Power Consumption
- 8 W
Input Specifications
Current Input Details
| Parameter | Specification |
|---|---|
| Rated Current | 5A / 1A |
| Measurement Consumption | ≤ 5VA |
| Current Tolerance | ≤ 2% |
| Frequency Tolerance | 0.1Hz |
Arc Detection
Arc Signal Input
| Feature | Details |
|---|---|
| Channels | 12-48 channels (optional) |
| Sensor Type | Optical Fiber |
| Detection Type | Visible light / UV light (optional) |
Output & Communication
- Relay Output Channels
- 9
- Operating Voltage
- AC 250V / 8A
- Isolation Method
- Photoelectric isolation (2500V)
Applications
- Target Environments
- MV/HV SwitchgearTransformersGeneratorsWind FarmsPhotovoltaic StationsThermal Power PlantsMunicipal Engineering
