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1. Introduction
1.1 Safety instruction
The UPS must be installed and maintained exclusively by quailified
staff. See installation and operation instructions before connecting to
the supply.
The UPS must be installed with an earth connection. It has a high
leakage current. The first wire to be connected is the earth wire, which
must be connected to the terminal marked PE (yellow/green).
The UPS generates a leakage current of over 3.5 mA. The leakage
current of the load should be added to that of the UPS on the
protective earth wire.
The UPS needs a neutral connection to work properly. Operation
without Neutral may damage the unit.
A readily accessible disconnect device shall be incorporated in the
building installation wiring for permanently connected equipment.
The UPS generates hazardous electric voltages inside it even when
the input and/or battery switches are open. The inside of the UPS is
protected by safety guards that are not to be removed by non-qualified
staff. All installation and maintenance or other operations that entail
gaining access to the inside of the UPS require the use of tools and
are to be performed exclusively by qualified staff.
The UPS contains an energy source: the batteries. All terminals and
sockets may be powered even when the UPS is not connected to the
mains.
The total battery voltage is potentially hazardous: it may cause an
electric shock. The compartment containing the batteries is protected
by safety guards, which are not to be removed by non-qualified staff.
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