Parallel Ups Operation - Tripp-Lite SmartOnline SVT Serie Manuel Du Propriétaire

4. Operation
Warning: (Only for parallel system setups)
• Before turning on the parallel system to activate inverter, make sure all units' maintenance switches are set to
the same position.
• When the parallel system is turned on to work through the inverter, do not operate the maintenance switch of any unit.
4.5 Parallel UPS Operation (SVT20KX and SVT30KX)
4.5.1 Parallel system initial startup
Before initial startup, first ensure all of the UPS systems can be connected in parallel and have the same configuration.
1) Turn on each UPS to Online mode (refer to section 4.4.1). Then, using a multimeter, measure the inverter output voltage of each
phase for each UPS to confirm that the inverter voltage difference between actual output and setting value is less than 1.5V (typically
1V). If the difference is greater than 1.5V, calibrate the voltage by configuring the inverter voltage adjustment (refer to Program Codes
15, 16 and 17, in section 4.7) in the LCD setting. If the voltage difference after calibration remains greater than 1.5V, contact
Tripp Lite Technical Support for further assistance.
2) Calibrate the output voltage measurement by configuring the output voltage calibration (refer to Program Codes 18, 19, and 20,
section 4.7) in the LCD panel to ensure the difference between the real output voltage and the detected value of the UPS is less
than 1V.
3) Turn off each UPS (refer to section 4.4.7). Then, follow the wiring procedure in section 3.4.
4) Remove the metal cover to access the parallel communication ports on the UPS; connect each UPS one by one (maximum of three
units for parallel installation) with the parallel cable and shared current cable. Follow the parallel communication cable configuration
as shown in the figure below:
4.5.2 Turning a parallel system on in Online mode
1) Turn on the line input breaker of each UPS. When all UPS systems enter Bypass mode, measure the output voltage between two
UPS systems for the same phase to ensure the phase sequence is correct. If these two voltage differences are near zero, then all
connections are correct. If not, check to see if the wirings are connected correctly.
2) Turn on the output breaker of each UPS.
3) Turn on each UPS one at a time. The UPS systems will then enter to Online mode synchronously and the parallel system is completed.
4.5.3 Turning on the parallel system in Battery mode
1) Turn on the battery breaker and output breaker of each UPS.
Note: Do not share one battery pack in a parallel system. Each UPS must be connected to its own battery pack.
2) Turn on any UPS. A few seconds later, the UPS will enter Battery mode.
3) Then, turn on another UPS. A few seconds later, the UPS will enter Battery mode and add to the parallel system.
4) If there is a third UPS in the setup, follow the same procedure as outlined above. The parallel system is complete.
4.5.4 Adding a new unit to the parallel system
1) A new unit cannot be added to the parallel system when the whole system is in operation. The load must be powered off and the UPS
system shut down.
2) Make sure all UPS systems can be connected in parallel and follow the wiring instructions in section 3.5.
4.5.5 Removing a unit from the parallel system
There are two methods to remove a unit from the parallel system:
Method 1:
1) Press the "OFF" key twice, each time for more than 0.5 seconds. The UPS will enter into Bypass mode or Standby mode without output.
2) Turn off the unit's output breaker and input breaker.
3) After the unit shuts down, turn off the battery breaker and remove the parallel cable and share current cables. Then remove the unit
from the parallel system.
15
= Current Sharing Cables
= Parallel Cable