Digital Earth Leakage Relay for Circuit Protection
This earth leakage relay enhances electrical safety by monitoring leakage current using a residual current transformer. When the current exceeds the threshold, it triggers an alarm for fault detection and features an alarm hold function to retain the alarm signal until reset.
Technical Specifications
Product Overview
Advanced Circuit Protection
This digital earth leakage relay provides continuous monitoring of leakage current to enhance electrical safety and prevent equipment damage. It features an advanced residual current transformer that instantly triggers alarms upon exceeding preset thresholds, with an alarm hold function for simplified fault diagnosis. Designed for versatility, the unit supports both AC and DC systems, making it an essential component for power distribution, industrial control, and smart grid applications.
Key Features
- Key Features
- LCD Digital DisplayAdjustable Trip LevelsAdjustable Time DelayDIN Rail MountingRS-485 CommunicationTest/Reset Function
Electrical Specifications
- Auxiliary Power Supply
- 85-265V AC/DC
- Power Consumption
- 4 VA
- Operating Frequency
- 50-400Hz
- Alarm Threshold Range
- 5mA - 3A
- Trip Time Delay
- 50ms - 10sec
I/O and Communication
Input/Output Configuration
| Type | Description |
|---|---|
| Digital Inputs | 2x (Reset/Test function) |
| Safety Relay | 1x NO contact |
| Alarm Relay | 1x NC contact |
| Relay Load Capacity | 5A @ 250VAC |
- Communication
- RS-485 MODBUS-RTU
Environmental Ratings
- Operating Temperature
- -25 to 55°C
- Storage Temperature
- -40 to 70°C
- Maximum Altitude
- 2500 m
Applications
Suitable Applications
- Smart grid systems
- Medium and low voltage systems
- Commercial and residential buildings
- Utilities and power distribution
- Motor control panels and switchboards
- DC system leakage current measurement
- Industrial control systems (PLC, SCADA, DCS)
