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Before installing, operating or maintaining this device, these in-
structions must be carefully read and understood.
Keep instructions for future reference
The installation must only be done by a qualified electrican!
Do not dispose of household garbage!
The device must be disposed of in compliance with nationally
applicable rules and requirements.
To help you understand and find specific text passages and notes in the
operating instructions, we have important information and information
marked with symbols.
Symbol and Notes Statement
DANGER:
Indicates that death or severe personal injury will result if
proper precautions are not taken.
DANGER
WARNING:
Indicates that death or severe personal injury can result if
proper precautions are not taken.
WARNING
CAUTION:
Indicates that a minor personal injury can result if proper
precautions are not taken.
CAUTION
INFO:
Referred information to help you make best use of the product.
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ATTENTION:
!
Warns against actions that can cause damage or malfunction of the
device, the device environment or the hardware / software result.
General Notes
The product hereby described was developed to perform functions as
a part of a whole installation or machine. A complete system normally
includes sensors, evaluation units, signals and logical modules for safe
disconnections. The manufacturer of the installation or machine is respon-
sible for ensuring proper functioning of the whole system. DOLD cannot
guarantee all the specifications of an installation or machine that was not
designed by DOLD. The total concept of the control system into which the
device is integrated must be validated by the user. DOLD also takes over
no liability for recommendations which are given or implied in the following
description. The following description implies no modification of the gene-
ral DOLD terms of delivery, warranty or liability claims.
Designated Use
The insulation monitor RN 5897/020 of the VARIMETER IMD family is
used to monitoring the insulation 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. For mains voltages > AC/
DC 230 V, a combination of the RN 5897/020 unit with the RL 5898 or
RP 5898 coupling devices must be used.
Other coupling devices are not permitted!
The technical data and specified limits of the application range must be
observed!
Any other use of the unit or use that goes beyond this is considered
improper use!
Safety Notes
Risk of electrocution!
Danger to life or risk of serious injuries.
WARNING
• Disconnect the system and device from the power supply and ensure
they remain disconnected during electrical installation.
• The device may only be used for the applications described in the
mutually applicable operating instructions / data sheet. The notes in the
respective documentation must be heeded. The permissible ambient
conditions must be observed.
• The contact protection of the elements connected and the insulation of
the supply cables must be designed in accordance with the requirements
in the operating instructions / data sheet.
• Note the VDE and local regulations, particularly those related to protective
measures.
• The display of the voltage is not in real time. The Value on the display is
updated at the end of a measuring cycle.
• Determine voltage free status by using appropriate instruments
• The terminals of the control input X1-X2 have no galvanic separation to
the measuring circuit L(+) and L(-) and are electrically connected together,
therefore they have to be controlled by volt free contacts or bridge. These
contacts ore bridges must provide a sufficient separation depending on
the mains voltage on L(+)-L(-).
• Please do not connect external voltage to terminals X1/X2. The control
must only be made by bridging X1 and X2.
• The coupling unit RL 5898 or RP 5898 must only be used in conjunction
with the RP5897/020 on a voltage system and not just by itself.
Risk of explosion and fire or other thermal hazards!
Danger to life, risk of serious injuries or property damage.
WARNING
• The device may only be used for the applications described in the
mutually applicable operating instructions / data sheet. The notes in the
respective documentation must be heeded. The permissible ambient
conditions must be observed.
• The device may only be installed and put into operation by experts who
are familiar with this technical documentation and the applicable health
and safety and accident prevention regulations.
Functional error!
Danger to life, risk of serious injuries or property damage.
WARNING
• The device may only be used for the applications described in the
mutually applicable operating instructions / data sheet. The notes in the
respective documentation must be heeded. The permissible ambient
conditions must be observed.
• The device may only be installed and put into operation by experts who
are familiar with this technical documentation and the applicable health
and safety and accident prevention regulations.
!
Attention!
• Before checking insulation and voltage, disconnect the monitoring device
RN 5897/020 from the power source!
• In one voltage system only one insulation monitor can be used. This has
to be observed when interconnecting two separate systems..
• Device terminals PE1 and PE2 must always be connected via separate
lines to different terminal points of the protective-conductor system.
• The device must not be operated without PE1/PE2 connection!
Attention!
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• The main measuring circuit can be connected with its terminals L(+) and
L(-) both to the DC and also AC side of a mixed network; it is done most
practically where the primary incoming power supply takes place e.g.
with battery networks with connected inverters on the DC side, with
Generators/Transformers with connected Rectifiers or inverters on the
AC-side. To monitor a 3NAC system the device can be connected single
pole, (L(+) and L(-) are bridged, to the neutral of the 3p4w system. The 3
phases have a low-Ωic (approx. 3 – 5 Ω) connection via the transformer
windings so also insulation failures of the not directly connected phases
are detected. Via the display menu in programming mode the correct
type of network needs to be selected (see „Connection Examples").
• If a monitored AC system includes galvanically connected DC circuits
(e.g. via a rectifier), an insulation failure on the DC side can only be
detected correctly, when a current of min 10 mA can flow via the semi-
conductor connections.
• If a monitored DC system includes galvanically connected AC circuits
(e.g. via an inverter), an insulation failure on the AC side can only be
detected correctly, when a current of min 10 mA can flow via the semi-
conductor connections.
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RN 5897/020 / 13.07.22 en / 605A
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