Installation guide

45Installation Guide Silcon DP300E Series 480V 120-160kVA
7OH0006 US rev. 03
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Control cables.
The external multicable is terminated with a 15 pin SUB-D plug in both ends. Pin 1
to pin 1, pin 2 to pin 2, and so on up to pin 15 - except pin 8, which is not connected.
Shield is connected to plug cover in both ends.
The terminals X020 and X021 for the control cables are situated on the parallel
board. X020 in UPS1 is connected to X021 in UPS2, X020 in UPS2 is connected to
X021 in UPS3 and so on. X020 in last UPS is connected to X021 in UPS1.
Power cables.
To optimize load sharing in parallel operation the external power circuits must be
“symmetrical”, i.e. power input cables must have same lengths and cross-sections
and the same for output cables.