Residual current monitor Type B RN 5884

The AC/DC sensitive residual current monitor RN 5884 allows an early detection of insulation faults and detects differential currents with AC as well as DC components in grounded voltage systems (type B). The measurement takes place via an external current transformer. Up to 2 measuring channels can be monitored simultaneously.​

The residual current monitors can be easily parameterised and set via the operating buttons. If the measured differential current exceeds the set response values, this is signalled via the output relays K1 or K2. In order to detect faults in the system at an early stage, the residual current is shown visually on a display.​

All versions have 2 output relays. Units for a connectable current transformer give an alarm at output relay K1 and a pre-alarm at output relay K2. Units for 2 current transformers output an alarm message separately for each measuring channel (CT1) at relay K1 or (CT2) at relay K2.​

Other features include wire break detection, test function and adjustable switching delays. A Modbus RTU interface is available for communication with higher-level systems. Thus, the residual current monitor RN 5884 provides an information head start for targeted and cost-effective maintenance measure before the system comes to a standstill.

Advantages and Features:​

• Preventive fire and system protection​
• Increasing the availability of plants by early fault detection​
• With external residual current transformer​
• Universal usage at AC/DC mains​
• Protection against manipulation by sealable transparent cover over setting switches​
• According to IEC/EN 62020, VDE 0663​
• For AC and DC systems Type B​
• To detect earth faults in grounded voltage systems​
• Setting range from 30 mA to 5 A​
• Manual / auto reset, with alarm and pre-warning​
• With adjustable switching delay​
• Energized or de-energized on trip​
• Set parameters directly on the device​
• Display​
• LED indicator for RUN- / SET- Mode; BUS, Error​
• With test function​
• As option with analogue output​
• As option with Modbus RTU-interface​
• Broken wire detection​
• Width: 52.5 mm