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Technology of Electrical Automatic

ELR-CH16 Multi-Channel Earth Leakage Relay

ELR-CH16 Multi-Channel Earth Leakage Relay

The ELR-CH16 Multi-Channel Earth Leakage Relay is a comprehensive device designed to monitor and measure fault currents or leakage currents in grounded systems or earthed power supply systems (TNC-S, TN-S, and TT systems).

  1. Configured with current transformer or temperature sensors
  2. Leakage current and temperature alarm setting
  3. RS485 interface with Modbus RTU protocol

The ELR-CH16 Multi-Channel Earth Leakage Relay is a comprehensive device designed to monitor and measure fault currents or leakage currents in grounded systems or earthed power supply systems (TNC-S, TN-S, and TT systems).

  1. Configured with current transformer or temperature sensors
  2. Leakage current and temperature alarm setting
  3. RS485 interface with Modbus RTU protocol

Features

Complete Residual Current Protection
ELR-CH16 Multi-Channel Earth Leakage Relay is a comprehensive safety measure designed to protect individuals and equipment from electrical hazards caused by leakage currents. It can monitor the leakage current of up to 16 circuits, with a monitoring range of 300 to 1000mA. The leakage current monitoring unit offers real-time leakage current monitoring, presenting measured values through a backlit graphical LED display for easy programming. If your project needs complete protection for AC currents, pulsating, and smooth DC fault currents, this leakage current monitoring device is a good choice for early-stage leakage current protection.
key button introuduction of Residual Current Monitoring
terminal rs485 port of residual current monitoring device
Equipped with RS485 communication capabilities
The ELR-CH16 Multi-Channel Earth Leakage Relay is built-in RS485, so it can effortlessly transmit data to SCADA systems. Through the RS485 interface, the parameters of the leakage current relay can be set remotely, and various data of the leakage current relay can be monitored in real-time. Moreover, we offer communication interface OEM and ODM services for the leakage current monitor, enhancing its adaptability for various applications.
Comparability with leakage current sensor or temperature sensor
For added flexibility, the Earth Leakage Relay allows users to choose between a designated current transformer or a temperature sensor for each channel to identify parameters and trigger alarms or trips at specified thresholds. Multiple AC DC Leakage Current protection relays can be seamlessly integrated with circuit breakers for constructing MRCD applications.
Residual Current Monitor supports up to 16 residual current sensor

The Leakage Current Monitoring Device provides continuous monitoring of leakage currents with a high-precision adjustment step of 1mA, records 100 event data points with time stamps and fault types, and supports manual self-checks. It features a wide temperature alarm setting range of 50.0 to 100.0°C with 0.1°C increments, dual relay outputs for flexible protection configurations, and a built-in buzzer for audible alarms. The leakage current monitoring relay also includes password protection for settings and is designed for easy installation in electrical cabinets.

Specification

Electrical Characteristics of ELR-CH16 Multi-Channel Earth Leakage Relay

Working power supply
Power supply AC/DC 90-240V, DC 20-60V (Optional)
Maximum power consumption 6W
Frequency 45/65Hz, Accuracy ±0.01Hz
Leakage CT input
Primary side current In 1A(rms)
Secondary side current Io 0.5mA (rms)
Load resistor RL ≤ 620ohm
Secondary side impedance R 100±20 ohm
Temperature sensor
Detect range 0 ~120C
Accuracy 2%
I/O capacity
Relay capacity AC 250V/5A or DC 30V/5A

2500V optocoupler isolation

Standards
EMC IEC 61000-4
Insulation IEC 60664-1
Rated residual IEC 62020
Others
Dimension Installation size: 96mm×96mm×75mm

Hole size: (91+0.8mm) × (91+0.8mm)

Communication RS-485 MODBUS-RTU
Withstand voltage 2.5KV 1min
Insulation Input, output, power supply to shell >5MΩ
Dielectric strength IEC / EN 61010-1:2010

2kV AC RMS 1 minute, between input / output / case / power supply

Storage environment -25°C ~ +70°C, Altitude ≤2500m,

20~95%RH, non-condensing, non-corrosive gas

Working environment -20°C ~ +60°C, Altitude ≤2500m,

20~95%RH, non-condensing, non-corrosive gas

Application

It is widely used in the Automotive industry, Electric vehicle charging piles, Stationary electrical equipment and systems, Power systems, and distribution systems, and Monitoring critical cable and electrical box temperatures. The specific scenario is like a Subway, Large gymnasium, Power plant, Petrochemical industry, Pharmaceutical industry, Mining industry, and Photovoltaic new energy.

residual current monitor application in grounded systems

Dimensions & Wring

The Dimensions is 96mm*96mm*75mm(L*W*H). The Installation hole size is (91+0.8mm)*(91+0.8mm)(L*W).

Dimension of ELR-CH16 Multi-Channel Earth Leakage Relay

It can connect with 16 Leakage Current Sensor, 8 Leakage Current Sensor& 8 Temperature sensor, 8 Leakage Current Sensor, or 4 Leakage Current Sensor& 4 Temperature sensor.

wiring diagram of residual current monitoring device residual current rely

Downloads

ELR-CH16-User manual-V1.10