DOLD VARIMETER IMD Instructions Manual

Monitoring Technique
VARIMETER IMD
Insulation monitor
RN 5893/100
RN 5893/100
Product Description
The insulation monitor RN 5897/100 of the VARIMETER IMD family
is a solution for optimal insulation monitoring of modern IT systems.
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.
Function Diagram
By default:
Indicator rel. K1 (11, 12, 14) = Insulation fault-alarm + device fault and
Indicator rel. K2 (21, 22, 24) = Insulation fault-pre-alarm + device fault:
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 device
RP 5898
t
t
M11593
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
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
• Preventive fire and system protection
• Detection of symmetric and asymmetric insulation faults
• Easy adjustment of response values and setting parameter via Modbus
• Suitable for 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 pre-alarm: 1 kΩ ... 500 kΩ
• Setting range alarm: 1 kΩ ... 500 kΩ
• 2 parameterizable changeover contacts (for insulation fault pre-alarm,
insulation fault-alarm, insulation fault-alarm on DC+/DC- or
device fault) each galvanic separated
• Energized or de-energized on trip can be selected for indicator relay
• With multicolour status LED to indicate the state of operation.
• Manual device self-test (automatic device self-test can be activated)
• 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
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
1
17.04.24 en / 869A