DOLD VARIMETER IMD RP 5898 Переклад оригінальної інструкції - Сторінка 5
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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 display of the voltage is not in real time. The Value on the display is
updated at the end of a measuring cycle. The absence of voltage of the
system and the device have to be checked with suitable measuring devices!
• The terminals of the control input X1-X2 have no galvanic separation to
the measuring circuit L(+) / 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 RP5897/321 on a voltage system and not just by itself.
!
Attention!
• Before checking insulation and voltage, disconnect the monitoring device
RN 5897/321 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!
• If telegrams fail in the bus communication due to EMC interference,
grounding the bus cable screening on both sides could be a remedy.
With this earthing, attention must be paid to possibly occuring equalizing
currents, which could occur with larger potential differences between
the bus participants.
Attention!
nfo
• 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 transfor-
mer windings so also insulation failures of the not directly connected
phases are detected. Via Modbus the correct type of network must 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.
• For the register of the Insulating resistance the value 0xFFFF is transmitted
via Modbus if R
> 2 MΩ. If no valid mains voltage value was measured
E
or the mains voltage is < 5 V, the value 0xFFFF is transmitted for the
register of the measured mains voltage via Modbus.(See Parameter table).
5
12.07.22 en / 604A