RCM 202-AB Residual current meter
Product description
The RCM-202-AB is used with connected current transformers to measure and monitor residual currents in TN and TT systems (earthed AC systems).
Functions:
- Residual current measurement via up to two connected current transformers
- Transformer connection monitoring for open circuit or short circuit per channel
- Evaluation of residual currents (residual currents) type A and B in accordance with IEC 62020
- Detection of sinusoidal AC residual currents with frequencies up to 20 kHz (type B+)
- Measured value and extreme value memory with time stamp
- Parameterizable response thresholds per channel (warning message and alarm message)
- Parameterizable delay times and reset delay times of the response messages
- Display of operating and error messages on the display
- Communication via Modbus (RS485 interface/Modbus RTU)
Residual current transformer:
- Residual current measurement
- Up to 2 residual current transformers
- Measuring 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 and UMG 96-PA with RCM module
Patented measurement method
- Type A, B, B+ measurement with passive residual current transformers
Historical data:
- Measured values and extreme values memory with time stamp
Communication:
- RS485 interface
- (Protocol: Modbus-RTU)
- Compatible with all communication-capable Janitza Modbus master devices
Compliant with DIN EN 62020
- Recording, evaluation and monitoring of residual currents type A, B and B+
Operation on site:
- High-resolution LCD display
- Intuitive operation
