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Monitoring Technique
VARIMETER IMD
Insulation monitor
RN 5897/240
RN 5897/240
Product Description
The insulation monitor RN 5897/020 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 connection to the monitored voltage system is done via
one of the coupling units. 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.
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
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
• 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
• 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 L1(+)/L2(-) 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
• Additional coupling device is necessary
• Width 52.5 mm
Approvals and Markings
Canada / USA
A025518
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
1
1)
AC/DC
RN 5897 only
1)
17.03.21 en / 371A
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Table of Contents
Related Manuals for DOLD VARIMETER IMD RN 5897/240
Summary of Contents for DOLD VARIMETER IMD RN 5897/240
- Page 1 Monitoring Technique VARIMETER IMD Translation Insulation monitor of the original instructions RN 5897/240 Your Advantages • Insulation monitoring according to IEC/EN 61557-8 • Suitable for DC charging stations for electric vehicles acc. to IEC/EN 61851-23 Coupling devices • 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 •...
- Page 2 Function Function Broken wire detection The device is supplied with DC auxiliary voltage via terminals A1(+) / A2. Switching on the auxiliary voltage (Power-On) is followed by an internal As described in section "Measuring circut", the measuring circuits L(1+)/ self-test for 10 s (see „Device test functions“). The test process is visible L2(-) and the protective conductors PE1/PE2 are constantly monitored for with the status LED.
- Page 3 Function Flashing Codes Status LED Programming/setting of parameters/set-up of the insulation monitor All settings are made via 3 rotational switches on the front of the device. measuring function disabled To avoid unauthorised manipulation of the settings, the unit has a sealable transparent cover on the front.
- Page 4 Indicators Error Indication Flash code Semiconductor output Failure cause Failure recovery Status-LED Broken wire detection Check measuring circuit Connection Auxiliary coupling device voltage on L(+)/L(-). L(+) and L (-) Check protective earth Broken wire detection connections on PE1/PE2. PE1 and PE2 Check position of the rotary Parameter failure switches and avoid undefined...
- Page 5 Technical Data Technical Data Outputs Meas. ciruit L1(+)/L2(-) to PE1/PE2 (with coupling device RL / RP 5898) Indicator contact: 2 x 1 changeover contact for Alarm (K1) RL 5898 RP 5898 and Pre-Alarm (K2) Nominal voltage U AC 0 ... 400 V AC 0 ...
- Page 6 Technical Data Standard Types Wire connection DIN 46228-1/-2/-3/-4 RN 5897.12/240/61 DC 12 ... 24 V Cross section: 0.5 ... 4 mm² (AWG 20 - 10) solid or Article number: 0069124 0.5 ... 4 mm² (AWG 20 - 10) • Auxiliary voltage: DC 12 ...
- Page 7 Accessories Accessories RL 5898/61 Flush mounting kit Article number: 0068315 Order reference: KU 4087-150/0056598 • Coupling device for RN 5897.12/240 • Extension of nominal voltage range U to DC 500 V, AC 400 V • Weight: Approx. 60 g • Dimensions - Width x height x depth: 35 x 90 x 71 mm Anschluss...
- Page 8 • Control < 1.5 s: Reset function • Control > 10 s: Stop der Messfunktion E. Dold & Söhne GmbH & Co. KG • D-78120 Furtwangen • Bregstraße 18 • Phone +49 7723 654-0 • Fax +49 7723 654356 dold-relays@dold.com • www.dold.com...
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