Technology of Electrical Automatic

RCM AC Residual Current Monitor

RCM AC Residual Current Monitor

RCM AC Residual Current Monitor is a combined residual current monitoring device for earthed power supply systems (TNC-S、TN-S and TT) residual current. It provides max 16 monitor channels and a panel mounting design that suits any electrical cabinet. The LED screen of this residual current monitoring unit can display various parameters, which makes it easy for the site engineer to diagnose and Insulation test.

This residual current monitor can optionally be carried out by a selected current transformer or temperature sensor for each channel detect parameter and alarm or trip threshold. Multiple RCM Residual Current Monitor can be combined with the circuit breakers for building MRCD applications. RS485 port of the RCM residual current monitoring device can easily submit data to SCADA systems. You can OEM and ODM the residual current monitoring unit as your needs.

RCM AC Residual Current Monitor is a combined residual current monitoring device for earthed power supply systems (TNC-S、TN-S and TT) residual current. It provides max 16 monitor channels and a panel mounting design that suits any electrical cabinet. The LED screen of this residual current monitoring unit can display various parameters, which makes it easy for the site engineer to diagnose and Insulation test.

This residual current monitor can optionally be carried out by a selected current transformer or temperature sensor for each channel detect parameter and alarm or trip threshold. Multiple RCM Residual Current Monitor can be combined with the circuit breakers for building MRCD applications. RS485 port of the RCM residual current monitoring device can easily submit data to SCADA systems. You can OEM and ODM the residual current monitoring unit as your needs.

RCM AC Residual Current Monitor Features

  • Continuous monitoring of residual currents
  • Max 16 measuring channels for residual current or temperature input
  • History memory with date and time stamp for 100 event data records
  • Backlit graphical display (7-segment display) and indicate LEDs
  • Two alarm relays, free to set alarm or trip logic
  • Built-in buzzer provides sound notice when alarm trigged
  • Password protection for device setting
  • RCM AC Residual Current Monitor can be mounted on DIN – Rail or front panel configuration according to the need. It is easy to install.

Specification

Electrical Characteristics of RCM AC Residual Current Monitor :

Power supply 85~265Vac/dc
Consumption <5VA
Residual current accuracy 1%
Temperature accuracy ±2°C
Data refresh rate 1sec
Binary inputs Passive node, isolation voltage 2000VAC
Relay output AC 250V/5A or DC 30V/5A, 2500V optocoupler isolation
Comm port RS485 Modbus-RTU protocol, baud rate up to 19200bps

Others:

Physical dimension 96*96*75mm (L*W*H)
Protection class IP20
Weight 0.55kg
Working enviorment -10~55°C
Measurement category CAT-III, polution grade 2
Insulation capacity > AC 2kV signal – power – output
Reference standard IEC 61000-4-2, class III
IEC 61000-4-3, class III
IEC 61000-4-4, class IV
IEC 61000-4-5, class IV
IEC 61000-4-6, class III
IEC 61000-4-8, class III
IEC 61000-4-11, class III

Downloads

Brochure of Switchgear Condition Monitor

Residual-current-monitor-manual-V3.5