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6.5
UPS Switch on Procedure in Parallel Mode:
With all the switches and fuses (S1,S2, S3, S4 and S5) in “OFF” “0” position and with S6 in
“NORMAL” position.
Turn on the parallel connected UPS’s, UPS1 and UPS2 separately as follows:
1.
Make sure that two UPS’s are properly connected for parallel operation in accordance with
the diagrams given in “INSTALLATION PROCEDURES” section.
2.
Turn on the S1 switch (inverter input) into “1” position. By turning on S1 you will see the
following messages on the LCD panel,
a. “RECTIFIER START”
b. “INVERTER START”
c. “STATUS NORMAL”
After these messages the UPS will start running and the green INVERTER LED on the
front panel will be turned on.
3.
Using the UP-DOWN buttons on the front panel select “SETTINGS MENU” on LCD and
press “ENTER”.
When you see “MODE” display, using “+” and “-“ buttons select either one of the
following operation modes which is suitable for your needs.
4.
After selecting one of the modes, press “ENTER” until the beep sound stops.
5.
Turn S1 off (inverter input) and few seconds later, turn it on again. Now the inverter is ready
to operate in the selected mode.
Perform the same procedure given above for both UPS’s (UPS1 and UPS2). Make sure
that you select the same mode for both UPS’s. If you select different modes, then a fault
signal will be generated.
After selecting the operation modes for both devices then perform the following
procedure:
6.
Turn on the Battery Circuit Breaker S5 (Optional) or insert the battery fuse, to connect the
battery group to the UPS for uninterrupted operation.
7.
Turn on S2 switches (static by-pass) of both UPS’s.
8.
When you restart UPS’s again, make sure that the CB1 and CB2 switches on the AC
distribution panel are in “OFF” position. Then turn on S4 (output) switches of both inverters.
ATTENTION :
VOLTAGE AT THE OUTPUT !!!
9.
Before going any further, measure the voltage (using an AC voltmeter) between the
corresponding phase outputs of UPS’s at the CB1 and CB2 contacts on the distribution
panel. Only after you are sure that there is no voltage difference between the corresponding
contacts, turn on CB1 and CB2 on the AC distribution panel.
Now the outputs of the UPS’s are connected in parallel and the parallel system is ready for
use with AC loads.
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Страница 38: ...288713405 35 Figure 6 3 a POWER CONNECTIONS OF TWO UPS s FOR PARALLEL OPERATION 10 15 20 kVA...
Страница 39: ...288713405 36 Figure 6 3 a POWER CONNECTIONS OF TWO UPS s FOR PARALLEL OPERATION 30 kVA...