DOLD VARIMETER IMD RP 5898 Monitoring Technique

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Monitoring Technique

VARIMETER IMD

Insulation monitor

RN 5897/020

Product Description

The insulation monitor RN 5897/020 of the VARIMETER IMD family provi-

des 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 de-

vice can be used in the most flexible way for AC, DC and AC/DC systems.

Mains areas of applications are non-earthed DC charging stations for

electric vehicles with mains voltages up to DC 1000 V. 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.

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

Translation

of the original instructions

Your Advantages

• Suitable for DC charging stations for electric vehicles acc. to

IEC/EN 61851-23:2014/AC:2016-06

• Insulation monitoring according to IEC/EN 61557-8

• 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

• Very fast reaction time ≤ 1 s

• Optimised insulation resistance monitoring also during

mains voltage variation

• Self-test every full operating hours

• 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

• Easy adjustment of response values and setting parameter via

rotational switch and menu display

• Suitable for large leakage capacitances up to 5 µF

• 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

• 2 separate adjustable response thresholds

(using e.g. for pre-alarm and Alarm)

• Setting range of 1st response value (Pre-alarm): 20 kΩ ... 500 kΩ

• Setting range of 2nd response value (alarm): 1 kΩ ... 100 kΩ

• 1 changeover contacts each for 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

• Automatic and manual device self-test

• Alarm storage selectable

• Protection against manipulation by sealable transparent cover

• External control input for combined test- / reset-button

with additional Stop of the measuring function

• 3 wide voltage input for auxiliary voltage

• Width 52.5 mm

Approvals and Markings

Canada / USA

Applications

Insulation monitoring of:

• Non-earthed AC, DC, AC/DC networks

• DC charging stations for electric vehicles

• UPS systems

• Networks with frequency inverters

• Battery networks

• Networks with direct current drives

• Hybrid and battery-powered vehicles

• Mobile generator sets

AC/DC

RN 5897 only

12.07.21 en / 423A