APPLICATIONS

RCM 202-AB
Monitoring of Type A to B+ residual currents
The two-channel residual current monitoring device meets the requirements of the DIN EN 62020 standard. A recurring insulation test can be omitted or at least limited. Typical applications are low-voltage main distribution boards (LVMDB) and subdistribution panels (SDP) in grounded systems (e.g. TN-S systems). The RCM 202-AB is a safe cross-industry alternative if current interruptions due to a residual current device (RCD) or an insulation resistance measurement cannot be tolerated. Complete integration into the GridVis® software is possible. The device can be integrated directly via the RS-485 interface.

Patented measuring method
Suitable as an RCM at any point, e.g. direct current systems, frequency converters, or applications with increased fire protection requirements.

  • Can be combined with any standard Janitza residual
    current transformer
  • Residual currents of Type A to Type B+
  • Measurement up to 20 kHz (Type B+) possible
  • Exact measurement on several levels

At a glance

RESIDUAL CURRENT
TRANSFORMER

  • Residual current measurement,
    up to 2 residual current
    transformers
  • Measurement range, AC/DC
    10 mA ... 20 A

RCM ANALYSIS

  • Evaluation of AC and DC
  • Harmonic spectrum up to
    2 kHz, Type B
  • Mixed current up to 20 kHz,
    Type A, Type B+

PERIPHERALS

  • 2 analog outputs
  • 2 alarm outputs
  • Compatible with RCM inputs
    of the UMG 96-RM-E & UMG
    96-PA with RCM module

PATENTED
MEASURING METHOD

  • Type A, B, B+ measurement
    with passive residual current
    transformers

HISTORICAL DATA

  • Memory for measured values
    and extreme values with time
    stamp

COMMUNICATION

  • RS485 interface (protocol: Modbus RTU)
  • Compatible with all
    communication-enabled
    Janitza Modbus master
    devices

STANDARDS-COMPLIANT
TO IEC 62020

  • Detection, evaluation and
    monitoring of residual current
    types A, B and B+

ON-SITE OPERATION

  • High resolution LCD display
    with intuitive operation

RESIDUAL CURRENT TRANSFORMERS

CT-AC-RCM

DACT

CT-AC-RCM A

KBU