User manual 6/10 kVA Rev.2
2. Installation
POWERTRONIX . - Page 9 of Total 29 - January 2006
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Parallel
y
For parallel operation, JP1 & JP2 on the
terminal block of each UPS should be
disconnected
y
Keep the UPS on a flat, stable surface with
50cm
space around it for proper ventilation.
y
Installation and wiring must follow the local
electrical regulations and instructions below.
y
Turn off the UPS and equipments before
installation.
(1) Remove covers from parallel slots on each UPS then use 3 meter 25-pin communication cable
to connect UPS to each other.
(2) Remove the cover of the terminal block, please use the above table and diagram on the back
panel for correctly cabling the UPS.
(3) Ensure the earth/ground cable is correctly sized according to electrical regulations.
(4) After making connections, double check the wiring is correct and wires are secure.
(5)
*IMPORTANT*
- If an earth leakage protection device (RCD) is to be used on the installation,
this must be installed between the output of the UPS and the distribution board. It must not
be before the input of the UPS.
(6) Ensure all load equipment is turned off before starting UPS.
(7) Start up each UPS one by one and make sure all UPS are working in normal mode.
(8) Measure the voltage at JP1 & JP2 on each UPS. If the difference between them is greater than
1 VAC, please check the output relay and restart the UPS.
(9) Please measure the JP2 points (one on each units) the voltage difference between these two
units should be less than 5 VAC (2VAC generally). If the voltage more than 5 VAC, please
check the 25-pin communication cable.
(10) The load equipment must be started one by one to avoid inrush current.
(11)
*WARNING*
-AC and DC voltages can still be present on the terminal blocks even with the
mains supply disconnected. Always check with a multi-meter before handling cables or
connections.
