R90 ONLINE USER’S MANUAL
UNINTERRUPTIBLE POWER SUPPLY (UPS)
Xtreme Power Conversion Corporation (Rev 3/7/14)
Page 21
Parallel Cable Installation
The shielded and double insulated control cables must be interconnected in a ring-configuration
between UPS modules as shown in the diagram below. The parallel control board is mounted in each
UPS module. The ring-configuration ensures high-reliability of the control function.
PARALLEL CONNECTION OF UPS