DOLD RL 5898 Traduzione delle istruzioni originali

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Monitoring Technique

VARIMETER IMD

Insulation monitor

RN 5897/240

Product Description

The insulation monitor RN 5897/240 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. The setting of the parameters and the switching values is done

by simple and operator friendly rotational switches on front of the device.

The operating status is indicated user friendly via a multicolour LED. With

a sealable transparent cover the device is protectet against manipulation.

Circuit Diagram

VSG1

L(+)

L(-)

A1(+)

VSG2

L(+) L(-)

U H

PE1

PE2

X1 X2

11 12 14 21 22 24

PE1

Connection Terminals

Terminal designation

Signal description

A1(+), A2

Auxiliarx voltage AC or DC

Connection for measuring ciruit resp.

L(+), L(-), VSG1, VSG2

connection for coupling device

PE1, PE2

Connection for protective conductor

Control input

(combined external Test- and Reset-input

X1, X2

with additional Stop of the measuring

function)

Semiconductor output (Open Collector) with

Y1(+), Y2

PWM-signal to indicate the actual insulation

resistance

11, 12, 14

Alarm signal relay K1(1 changeover contact)

Device fault indicator relay K2

21, 22, 24

(1 changeover contact)

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

(+) Y2

PE2

M12297_a

Translation

of the original instructions

Your Advantages

• Insulation monitoring according to IEC/EN 61557-8

• Suitable for DC charging stations for electric vehicles

acc. to IEC/EN 61851-23:2014/AC:2016-06

• 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

• Extended operating temperature range of - 40 ... + 70 °C

• 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

• Universal application in non-earthed AC, DC, AC/DC networks

• Easy adjustment of response value and setting parameter via

rotational switch

• 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

• Setting range of 2nd response value (alarm): 1 kΩ ... 500 kΩ

• 1 changeover contacts each for insulation failures alarm and

device failures

• Energized or de-energized on trip can be selected for indicator relay

• With multicolour status LED to indicate the state of operation.

• 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

• With semiconductor output to indicate the insulation resistance (PWM)

• 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

07.07.23 en / 755A