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10)
Do not switch on the output breaker of each UPS, switch on the
input breaker of the each UPS, the UPS should work in bypass with
output, observe their display to check if there are any warning or
fault information, measure the output voltage of each UPS
separately to check if the voltage difference between them is less
than 1V. If the difference is more than 1V, check the wiring.
11)
Press the
button of one UPS, each UPS would start to turn on,
all the UPSs would transfer to the INV mode together. Measure the
output voltage of each UPS separately to check if the voltage
difference between them is less than 0.5V. If the difference is more
than 1V, the UPSs need to be regulated.
12)
Press the
button of one UPS, each UPS would start to turn off
and transfer to the Bypass mode, switch on the output breaker of
each UPS to parallel all the output of UPSs together.
13)
Press the
button of one UPS, each UPS would start to turn on,
after turning on, the UPSs should work parallel in the Line mode.
How to join a new UPS to a parallel system:
1)
First the parallel system must be installed one main maintenance
mechanical switch or static switch.
2)
Regulate the output voltage of the new UPS separately: check if
the output voltage difference between the new UPS and the
parallel system is less than 0.5V.
3)
Ensure the bypass of the parallel system is normal and the bypass
setting is “enable”, remove the cover plate of maintenance switch
on the rear panel of each UPS, the UPS system would transfer to
bypass automatically, For tower 3/1 10k
-
20k,set the own
maintenance switch of each UPS from “UPS” to “BPS”. For tower
3/1 10K-31C model, turn the maintenance switch in the “ON”
position, and turn the output switch in the “OFF” position.
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4)
For tower 3/1 10k
-
20k ,Set the main maintenance switch or static
switch from “UPS” to “BPS”, For tower 3/1 10K-31C model, turn the
maintenance switch in the “ON” position, and turn the output
switch in the “OFF” position, switch off the main output breaker
and the main input breaker, the UPSs would shut down.
5)
Ensure the UPSs shut down totally, add the new UPS and reinstall
the new UPS parallel system by following step 1) to 9) of last
chapter - “install a new parallel UPS system”.
6)
For tower 3/1 10k
-
20k , Switch on the main input breaker and the
main output breaker, and set the main maintenance switch or static
switch from “BPS” to “UPS”, then set the UPS own maintenance
switch from “BPS” to “UPS” and screw the maintenance cover plate
back again. Press the
button of one UPS, each UPS would start
to turn on, after turning on, the UPSs should work parallel in the
Line mode.
For tower 3/1 10K-31C model, turn the maintenance switch in the
“OFF” position, and turn the output switch in the “ON” position,
then turn the UPS own maintenance switch in the “OFF” position,
and turn the UPS own output switch in the “ON” position, then
screw the maintenance cover plate back again. Press the
button of one UPS, each UPS would start to turn on, after turning
on, the UPSs should work parallel in the Line mode.
How to remove a single UPS from a parallel system:
1)
First the parallel system must be installed one main maintenance
mechanical switch or static switch.
2)
Ensure the bypass is normal and the bypass setting is “enable”,
remove the cover plate of maintenance switch on the rear panel of
each UPS, the UPS system would transfer to bypass automatically,
For tower 3/1 10k
-
20k ,set the own maintenance switch of each
UPS from “UPS” to “BPS”. For tower 3/1 10K-31C model, turn the
