UPS: MKD 700 – 3000 VA RT (XL) Installation and Connection
In the event that you still operate a UPS device on an upstream GFCI, some
sanctions are to be observed:
It must be considered that in triggering an upstream GFCI, the
reference conductor and with it the TN-S network are lost.
Specific GFCI are to be recommend based on the operating
characteristics of the UPS devices as well as the quality of the
supplying network. The GFCI must be sensitive to universal currents,
suitable for pulsating DC fault currents and short-time delayed;
The leakage current of a securely connected UPS device may
account for maximum 5% of the nominal output current under
unfavorable conditions! Because the filter is radially connected to the
network, a leakage current will occur under normal conditions due to
tolerance of the radio interference suppression capacitator in the
range of up to approximately 0.5 A. Therefore, we recommend
applying GFCI with a sensitivity starting at 500mA. We make this
recommendation only as a precaution to prevent an undefined
triggering of the GFCI. Based on our experience, this happens very
frequently.
5.3.2 Final inspection and safety precautions
Before beginning with the connection work, please observe the 5-point rule in
accord with the safety regulations ( Fehler! Verweisquelle konnte nicht
gefunden werden. Connection) for all components to be connected including
the network connection.
Generally, check that all connections are de-energized before beginning with
further work.
This especially applies to the external accumulators. If the battery bank does not
have a switchable output fuse, make sure that the output plug-in connector is
constantly energized.
Ensure again that the temperature equalization between UPS / battery bank and
the surroundings has been completed fully in order to rule out any condensation
effects ( Fehler! Verweisquelle konnte nicht gefunden werden.
Installation).
Check that the installation and wiring conforms with the local safety regulations
for electricity.
5.3.3 Notice for external battery bank and its connection cable
This UPS device is possibly operated with a separate battery bank as energy
storage. Before carrying out a coupling of the UPS and battery bank, please
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