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Residual Current Monitor

Product catalog summary

Introduction
The RCM series is a residual current monitor designed for TT and TN-S systems to measure residual current and operating temperature. It can detect faults and assess currents in grounded power supplies using multiple sensors.

Main Features

Supports up to 16 measuring channels for residual current or temperature input.
RS485 communication port with Modbus-RTU protocol for data transmission to SCADA systems.
Backlit graphical display with LEDs and a built-in buzzer for alarms.
Manual self-check and optional 2-way passive open input.
Alarm settings for residual current (300 ~ 1000mA) and temperature (50.0 ~ 100.0°C).
Records up to 100 history events with date and time stamps.

Applications

Automated industry.
Electric vehicle charging stations.
Stationary electrical equipment and systems.
Power and distribution systems.
Monitoring critical cable and electrical box temperatures.

Technical Characteristics

Power supply: 85~265 VAC/DC, consumption <5 VA.
Residual current accuracy: 1%, temperature accuracy: ±2°C.
Data refresh rate: 1 second.
Relay output: AC 250V/5A or DC 30V/5A with 2500V opt coupler isolation.
Physical dimensions: 96*96*75mm, weight: 0.55kg.
Working environment: -10~55°C, protection class: IP20.
Measurement category: CAT-III, pollution class 2.

Reference Standards

IEC 61000-4 series standards for electromagnetic compatibility.

Model Description

RCM-16IN: 16 Residual Current sensors.
RCM-8IN8T: 8 Residual Current sensors, 8 Temperature sensors.
RCM-8IN: 8 Residual Current sensors.
RCM-4IN4T: 4 Residual Current sensors, 4 Temperature sensors.

Catalog excerpts

i Main Features The RCM series (residual current monitor) is designed for measuring residual current and operating temperature in TT and TN-S systems. It can receive signals from multiple sensors to detect and assess faults, residual currents, and operating currents in grounded power supplies. RCM series can be configured with selected current transformers or temperature sensors to detect parameters and set alarm or trip thresholds. RS485 port allow data transmission to SCADA systems. • Max 100 history events records with date and time stamp. • Standard RS485 communication port, Modbus-RTU. • Support manual self-check, optional 2-way passive open input. • Backlit graphical display (7-segment display) and indicate LEDs. • Max 16 measuring channels for residual current or temperature input. • Residual current alarm setting range 300 ~ 1000mA, minimal adjustment step 1 mA. • The temperature alarm setting range 50.0 ~ 100.0°C, minimal adjustment step is 0.1°C; With 2 relay outputs, free to configuration various protection methods. • Building in buzzer to provide sound alarm, automatically jump to the alarm interface when protection occurs, key buttons can manual silencing and reset. • Automated industry. • Electric vehicle charging pile. • Stationary electrical equipment and systems. • Power systems and distribution systems. • Monitoring critical cable and electrical box temperatures. Technology of Electrical Automatic

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