DOLD VARIMETER IMD RN 5897/011 Manuel

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Monitoring Technique

VARIMETER IMD

Insulation monitor

RN 5897/011

Product Description

The insulation monitor RN 5897/011 of the VARIMETER IMD family

provides best and up to date insulation monitoring of modern IT systems

in an optimum and state of the art way fulfilling the relevant standards.

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.

Function Diagram

U H

Earth fault

Hysteresis function

21-24

Open circuit operation

21-22

21-24

De-energized on trip

21-22

11-14

Open circuit operation

11-12

11-14

De-energized on trip

11-12

Manual reset

Reset

21-24

Open circuit operation

21-22

21-24

De-energized on trip

21-22

11-14

Open circuit operation

11-12

11-14

De-energized on trip

11-12

All Technical Data in this list relate to the state at the moment of edition. We reserve the right

for technical improvements and changes at any time.

Coupling devices

RL 5898

RP 5898

M11593

Your 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 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

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

Approvals and Markings

AC/DC

Applications

Insulation monitoring of:

• Non-earthed AC, DC, AC/DC networks

• UPS systems

• Networks with frequency inverters

• Battery networks

• Networks with direct current drives

• Hybrid and battery-powered vehicles

• Mobile generator sets

Original

30.06.23 de / 752A