DOLD VARIMETER IMD RN 5897/010 Monitoring Technique

Monitoring Technique
VARIMETER IMD
Insulation monitor
RN 5897/010
RN 5897/010
Product Description
The insulation monitor RN 5897/010 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.
Function Diagram
U H
R
E
Earth fault
R
pA
R
A
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
• 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
• 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)
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): 20 kΩ ... 2 MΩ
• Setting range of 2nd response value (Alarm): 1 kΩ ... 250 kΩ
• 2 changeover contacts für 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
• 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
• 3 wide voltage input for auxiliary voltage
• Width 52.5 mm
Approvals and Markings
t
t Canada / USA
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
1
AC/DC
RN 5897 only
1)
07.07.23 en / 755A