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 technical alternative usable across all industries when power interruptions due to a residual current circuit breaker (RCD) or insulation resistance measurement cannot be tolerated. Complete integration into the GridVis® Power Grid Monitoring software is possible. The device can be integrated directly via the RS-485 interface.It can be used as an RCM at any point, e.g. in direct current systems, for frequency converters, or in applications with increased fire protection requirements. The RCM 202-AB allows type B/type B+ monitoring with common passive residual current transformers. Type B measurement is also possible with separable transformers, making it an ideal solution for existing systems.

Residual currenttransformer

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

Patented measuring method

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

Standards-Compliant to IEC 62020

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

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+

Historical data

• Memory for measured values and extreme values with time stamp

On-site operation

• High resolution LCD display with intuitive operation

Peripherals

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

Communication

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