DOLD RN 5897 Translation Of The Original Instructions

Monitoring Technique
VARIMETER IMD
Insulation monitor
RN 5897
Product Description
The insulation monitor RN 5897 of the VARIMETER IMD family provides
best and up to date insulation monitoring of modern IT systems in an op-
timum 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.
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 300 V
• Easy adjustment of response values and setting parameter via
rotational switch and menu display
• Suitable for large leakage capacitances up to 300 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)
• No additional coupling device required
Features
• Insulation monitoring according to IEC/EN 61557-8
• 2 separate adjustable response thresholds
(using e.g. for pre-Alarm and Alarm)
• Setting range of 1st response value (Pre-Alarm): 10 kΩ ... 1 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
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
M11593
1
Translation
AC/DC
Canada / USA
06.05.21 en / 393A