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OPERATION
8. The distance between the UPS in parallel and the breaker panel is required to be less than
20 meters.
9. The difference between the wires of input and output of the UPS is recommended to be less
than 2 meters.
10. Do not switch on the output breaker of each UPS, switch on the input breaker of the each
UPS, the UPS should operate in bypass with output, please check if there are any warning
or fault information on display panel, 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, please check the wiring.
11. Press “ON/OFF” button of one UPS, each UPS would start to turn on, all the UPS would
transfer to the Line 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
0.5V, the UPS need to be regulated.
12. Press “ON/OFF” 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 UPS
together.
13. Press “ON/OFF” button of one UPS, each UPS would start to turn on , after turning on, the
UPS 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 bypass switch.
2. Regulate the output voltage of the new UPS separately: please 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".
Press “ON/OFF” button of one UPS, each UPS would turn off and the UPS system would
transfer to the Bypass mode.
4. Set the main maintenance bypass switch from "UPS" to "BPS", switch off the main output
and input breaker, the UPS would shut down.
5. Ensure the UPS shut down totally, add the new UPS and reinstall the new UPS parallel
system by following step 1 to 10 of
<How To Install A New Parallel UPS System>
.
6. Switch on the main input breaker and the main output breaker, and set the main
maintenance bypass switch from "BPS" to "UPS". Press the “ON/OFF” button of one UPS,
each UPS would start to turn on and the UPS should operate parallel in the Line mode.