Siel Green Point 6 20KVA, User Manual

Page: 35 / 61

IV319 Rev.00
Data 2010-06-22
Pag. 35 di 118
on the terminal block of each UPS to check if the voltage
difference between them is less than 1V. If the voltage
difference is more than 1V, the output relay of the UPS may not
be closed.
7) Measure the voltage of each JP2 on each UPS to check if the
voltage value is less than 5V (Generally 2V). If the difference is
more than 5V, that means the UPS needs to be regulated again
or you need to check that the parallel cable of the parallel kit
are normal.
8) Turn off each UPS in turn and after all of them transfer to the
Bypass mode, remove the maintenance cover board of each
UPS and set the maintenance switch from
³
BPS
´
to
³
UPS
´
and
screw the maintenance cover board back again.
9) Turn on the UPSs in the Line mode to perform the parallel
operation.
3. How to join a new UPS:
1) Before joining a new UPS, user need to prepare the input and
output wires, the output breaker, and the parallel cable.
2) Turn off the input and output breakers of the new unit. Connect
the input wires, output wires and battery wires. Remove the
short connection wire between JP1 and JP2 on the terminal
block.
3) Turn off the UPS systems that are running. After all of the
running UPSs transfer to the Bypass mode, remove the
maintenance cover board of each UPS and set the
maintenance switch from
³
UPS
´
to
³
BPS
´
, then turn off the input
breaker of each UPS.
4) If the UPS system that is running is a stand-alone UPS, you
need to remove the short connection wire between JP1 and
JP2 on the terminal block.
5) Remove the cover board of the parallel port on the new UPS,
push one end of the parallel cable into the slot of the parallel kit
and screw up the connector; screw the cover board of the
parallel port back again.
6) Remove the maintenance cover board of the new UPS and set
the maintenance switch from
³
UPS
´
to
³
BPS
´
.