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Type:
Monitoring Hardware
Description:
The insulation monitor RN 5897/011 of the VARIMETER IMD family is a solution for optimal insulation monitoring of modern IT systems. The device can be used in the most flexible way for AC, DC and AC/DC systems even with large leakage capacity to earth (PE). The adjustment of the setting values is simple and user friendly done on 2 rotary switches on the front of the device. Via display and LEDs the measured value, device parameters and device status are indicated easy to read. With a sealable transparent cover the device is protectet against manipulation. The RN 5987/011 has an additonal Modbus RTU-interface. All measured values, device states and parameters can be read out, set and parameterized. All functions available on the device can also be operated via Modbus.
Connectivity:
Modbus RTU
Features:
Insulation monitoring according to IEC/EN 61557-8; Trigger output for insulation fault locating system; 2 separate adjustable response thresholds (using e.g. for pre-Alarm and Alarm); Setting range of 1st response value (Pre-Alarm): 1 kΩ ... 2 MΩ; Setting range of 2nd response value (Alarm): 1 kΩ ... 2 MΩ; Energized or de-energized on trip can be selected for indicator relay; Display for indication of measured value, device parameters and device status; Setting the maximum leakage capacitance to shorten the response time; Automatic and manual device self-test; Alarm storage selectable; Protection against manipulation by sealable transparent cover; External control input for combined Test-/Reset-button; 2 wide voltage input for auxiliary voltage; Width 52.5 mm
Specifications:
Preventive fire and system protection; Detection of symmetric and asymmetric insulation faults; Quick fault localisation through selective earth fault detection to L+ and L-; Universal application in non-earthed AC, DC, AC/DC networks up to AC max. 250 V or DC max. 300 V; With connection facility of an external coupling device: RL 5898 for voltages up to AC 400 V / DC 500 V, RP 5898 for voltages up to AC 690 V / DC 1000 V, RR 5898*) for voltages up to AC 1000 V / DC 1500 V; Easy adjustment of response values and setting parameter via rotational switch and menu display or via Modbus RTU-interface; Suitable for large leakage capacitances up to 1000 µF; Optimised reaction time for large leakage capacitances; Monitoring also with voltage-free mains; Measuring circuit L(+)/L(-) with broken wire detection (can be switched off); Protective conductor PE1/PE2 with broken wire detection (can't be switched off); 2 changeover contacts each for insulation failures-Pre-alarm and -alarm each galvanically isolated; With galvanic separated Modbus RTU interface
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