Arc Flash Protection Relay with Arc Fault Detection
The arc flash protection relay is designed to protect electrical networks from arc flash incidents. It uses smoke, current, and arc sensing to quickly detect busbar arc flashes.
Technical Specifications
Overview
Advanced Arc Flash Protection
The AFR-M Busbar Arc Flash Protection Relay is a high-performance safety solution designed for low-voltage (LV) and medium-voltage (MV) electrical networks. It utilizes a sophisticated three-trip criteria—combining smoke, current, and arc sensing—to ensure rapid and reliable detection of busbar arc flashes. This integrated approach significantly minimizes damage to equipment and enhances personnel safety by disconnecting power supplies before electrical fires can escalate.
Key Features
System Capabilities
- Complete digital design with simplified operating principles
- Double criterion logic (over-current and arc) for high reliability
- Optical fiber transmission for superior electromagnetic interference resistance
- Programmable trip exit logic for customized protection schemes
- Comprehensive fault information recording for post-event analysis
- Fast exit tripping to minimize total fault clearing time
Technical Power Specifications
Rated Current
5 A
Primary Rated Current
1 A
Secondary Rated Current
- Power Supply Range
- AC/DC 85 ~ 265V
- Device Consumption
- 8 W
Arc Detection & Inputs
- Arc Signal Channels
- 12-48 channels (optional)
- Sensor & Light Detection
- Optical FiberVisible LightUV Light
Output & Isolation
Output Parameters
| Parameter | Specification |
|---|---|
| Operating Voltage | AC 250V / 8A |
| Input Method | Passive contact |
| Isolation Method | Photoelectric isolation |
| Isolation Voltage | 2500V |
- Relay Output Channels
- 9
Applications
Application Areas
Power SubstationsWind FarmsPhotovoltaic StationsThermal Power PlantsTransformer ProtectionDC SystemsSwitchgear Cabinets
Measurement Precision
Accuracy & Tolerance
- Protection current tolerance: ≤ 2%
- Protection frequency tolerance: 0.1Hz
- Current input consumption: ≤ 5VA
