Start-Up: Parallel Ups - Integra Xmart OPTIMA T10 15K User Manual

8. START-UP: PARALLEL UPS

INSPECTION BEFORE START-UP
OUTPUT VOLTAGES REVISION
When multiple UPS operate in parallel, their outputs are connected to each other, and each UPS provides a proportional share of the total
system power. In this type of system, it is VERY IMPORTANT that voltage supplied by the inverters of all UPS is similar. The voltages should
not differ by more than 1.0 Volt AC. Follow the procedure described below to check the output voltages of each UPS:
1- Ensure that the parallel control cables are not connected between UPS.
2- Make sure the external output breakers are in the OFF position.
3- First step is to start each of the UPS units separately and measure their output voltage in ONLINE mode individually.
4- WARNINGS:
During this process, NEVER have 2 UPS units running at the same time.
Voltage measurements should be taken using the same high-quality and highly precise digital voltmeter.
Measurements of all 3 UPS units should be performed consecutively.
UPS #1 VOLTAGE MEASUREMENT
- Connect external battery banks to UPS #1. Provide power ONLY to UPS #1, keeping the others unpowered.
- Wait for UPS #1 to perform its self-diagnosis, power on its display, and enter BYPASS mode. Screen will clearly indicate this.
- Follow the UPS power-on procedure:
Touch CONTROL icon / Touch UPS ON/OFF command / Confirmation Question "TURN ON UPS?", Touch "YES".
- Wait for it to enter ONLINE mode and use a digital voltmeter to measure the output voltage, then make a note of it.
- Follow the UPS turn-off procedure:
Touch CONTROL icon / Touch UPS ON/OFF command. / Confirmation prompt "TURN OFF UPS?", touch "YES."
- Cut the power to UPS #1 input and wait until LCD screen turns off.
UPS #2 VOLTAGE MEASUREMENT
Repeat previous steps on UPS #2 and take note of the output voltage.
UPS #3 VOLTAGE MEASUREMENT
Repeat previous steps on UPS #2 and take note of the output voltage.
If output voltages on all 3 UPS show a difference under 1.0 VAC, proceed with startup process. Otherwise, adjust output voltage on the UPS
that require it.
IMPORTANT NOTES:
- Adjustment process should be carried out on one UPS at a time. During adjustment process, avoid having more than 1 UPS in
operation.
- Adjust procedure should be done according to section 10. UPS OPERATION & CONFIGURATION, in section SETTING →
ADVANCE → SERVICE → VOL CALI → INVERTER VOL.
www.xmart-ups.com
UPS # 1 (Vac)
L - N:
VER.2311.09 (ENG)
USER MANUAL – OPTIMA T10 15K/20K
UPS # 2 (Vac) UPS # 3 (Vac)
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