Insulation monitor
RN 5897/010

The insulation monitor RN 5897/010 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.

Advantages
. 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 or RP 5898 for voltages up to AC 690 V / DC 1000 V
. Easy adjustment of response values and setting parameter via rotational switch and menu display
. 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)

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): 20 kΩ … 2 MΩ
. Setting range of 2nd response value (Alarm): 1 kΩ … 250 kΩ
. 2 changeover contacts für insulation failures-Pre-Alarm and -Alarm
. 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
. 3 wide voltage input for auxiliary voltage
. Width 52.5 mm

Technical specifications
Width: 52,5mm
Approvals: UL
Enclosure design: Distribution board
IMD type: AC, DC, AC/DC
Nominal voltage IT system: AC 0 - 690 (Coupling device), DC 0 - 1000 (Coupling device), AC 0 - 230, DC 0 - 230V
Response value type: Adjustable
Response value: 1 - 250kΩ
Earth fault indicator: Yes
Auxiliary voltage: DC, AC/DC
Type: RN 5897/010


Manufacturer: E. Dold & Söhne GmbH & Co. KG
Type: RN5897.12/010/61 AC/DC24-60V
Art. No.: 0066940