Tripp Lite SUT30K Owner s Manual for SmartOnline r SUT 3-Phase UPS System 20/3 - Page 14
Parallel Units Wiring
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3. Installation and Wiring 3.6.3 Parallel Units Wiring Note: Prior to wiring, first read 3.6.1 Precautions Prior to Wiring. 1 Follow steps 1 ~ 5 in section 3.6.2 Wiring Procedure. 2 The UPS system is shipped with the battery cables disconnected. Locate the battery connection cables behind the labeled connector door in the cabinet. Connect the battery cabinet cables to the wiring terminal block and ensure the UPS system is properly grounded (refer to Figures 3-6~3-10). 3 Use the provided parallel cable to connect the parallel ports on the parallel units. See Figure 6-1 for parallel port location. 4 Refer to 6. Communication Interfaces to set the parallel switch in the ON or OFF position. 5 Follow steps 7 ~ 8 in section 3.6.2 Wiring Procedure. WARNING: 1. When UPS systems are paralleled, the length of each unit's input cables/output cables must be equal. This ensures that the parallel UPS systems can equally share the equipment loads in bypass mode. 2. Only UPS systems with the same capacity, voltage and frequency can be paralleled; otherwise, parallel functions will fail. 3. Before start-up of parallel units, qualified service personnel should set ID (0, 1, 2 or 3) through the LCD. Otherwise, UPS systems cannot be started. If the symbol '!' appears after an ID number, it indicates there is a conflict between ID numbers. AC Input UPS 1 3Ø4W I/P AC Input UPS 2 UPS Output Parallel Port Parallel Cable UPS Output Parallel Port Parallel Port 3Ø4W LOAD Parallel Cable AC Input UPS Output UPS 4 Parallel Port (Figure 3-12: Parallel Units Wiring Diagram) 14