DOLD VARIMETER IMD RN 5897/321 원본 지침 번역

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Monitoring Technique

VARIMETER IMD

Insulation monitor

RN 5897/321

Product Description

The insulation monitor RN 5897/321 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. Mains areas of applications are non-earthed DC charging

stations for electric vehicles with mains voltages up to DC 1000 V, that

need an extended temperature range. The setting of the parameters and

the switching values is done via Modbus. All measured values, device

statuses and parameters can also be read out via Modbus. All functions

of the device can also be operated via Modbus. 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

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)

11, 12, 14

Alarm signal relay K1(1 changeover contact)

Prewarning signal relay K2 (1 changeover

21, 22, 24

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

PE2

M11956_a

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

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

up to AC max. 250 V resp. DC max. 300 V

• Connection 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 possible

• 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

• Easy adjustment of response values and setting parameter via Modbus

• 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)

• With galvanic separated Modbus RTU interface

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

• 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

• 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

• 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

12.07.22 en / 604A