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• in the hardwired models, is needed to remove the fixing screws of
the protection cover and the own cover, to proceed to the parallel
connection.
Also the equipments from 4 to 10 kVA have cable glands in the
own cover, through them the cables can be conducted and fixed.
when finalising the corresponding tasks, the cover will be in-
stalled and its fixing screws again.
• To insert the option cards, it is needed to remove the fixing screws
of the smart slot and the own cover.
when finalising the corresponding tasks, the cover will be in-
stalled and its fixing screws again.
• it is recommended to use terminals in all the cable ends, which
are connected to the power blocks, specially in the power ones
(input, output and bypass).
• Check the correct torque in the screws of the power blocks.
4.3.1. Connection of input.
•
As this is a device with class i protection against electric
shocks, it is essential to install a protective earth con-
ductor (connect earth(
)). Connect the conductor to the ter-
minal, before connecting the power supply to the input power
block.
• Equipments with iEC outlets (models from 0,7 to 3 kVA):
Take the power cord with schuko plug and iEC connector.
Connect the iEC connector to the UPS inlet.
insert the schuko plug to the AC mains outlet.
• For hardwired equipments (models from 4 to 10 kVA).
These equipments have separate power blocks for the
static bypass line. For installations with only one power
supply, leave a cable as a bridge mode "Jumper" between the
terminals JP and l (bypass phase line).
Do not fit this "Jumper" bridge, if the equipment is a fre-
quency converter (see figure 13).
in accordance with safety standard En-iEC 62040-1, the in-
stallation has to be provided with an automatic «backfeed
protection» system, as for example a contactor, which will
prevent the appearance of voltage or dangerous energy at
the input line during a mains fault (see figure 12 and respect
the circuit diagram of the particular «backfeed protection»
for the equipment without bypass line).
There can be no derivation in the line that goes from
the «backfeed protection» to the UPS, as the safety
standard would be infringed.
it is not needed to install the «backfeed protection», in case
the equipment is a frequency converter, because the own
operating principle of the equipment disables the possibility
of having bypass line.
warning labels should be placed on all primary power
switches installed in places away from the device to alert the
electrical maintenance personnel of the presence of a UPS in
the circuit be infringed.
The label will have the following text or an equivalent one:
before working on this circuit.
• isolate Uninterruptible Power System (UPS).
• Then check for Hazardous Voltage between all terminals
including the protective earth.
Risk of Voltage backfeed from UPS.
Connect the power supply cables to input power blocks R (l),
and n, by respecting the phase and neutral rotation stated
in the labelling of the equipment and in this manual (see
figure 13). if this rotation is not respected, serious faults could
happen.
when discrepancies exist between the labelling and the in-
structions of this manual, the labelling will always prevail.
in parallel systems, the length and cross section of the
cables that go from the switchgear panel till one of
the UPSs and vice versa, will be the same for all of them
without any exception.
4.3.2. Connection of the static bypass power
blocks (> 3 kVA models power rate only)
•
These equipments have separate power blocks for the
static bypass line. For installations with two power sup-
plies, the cable as a bridge mode "Jumper" between the terminals
JP and l (bypass phase line) doesn't need to be fitted, otherwise a
short-circuit can be made when turning on the protection of both
lines.
•
As this is a device with class i protection against electric
shocks, it is essential to install a protective earth con-
ductor (connect earth(
)). Connect the conductor to the ter-
minal, before connecting the power supply to the input power
block.