Sync Control for Eaton 9395P and 93PM
4
User’s and Installation Guide
1
Introduction
The Eaton® Sync Control maintains the critical load outputs of two separate Eaton UPS systems
in synchronization. Use of the Eaton Sync Control provides the uninterrupted transfer of the load
from one load bus to another by means of downstream, dual-source, static transfer switches.
Without the load sync option, the two system output (critical load) buses could become out of
phase with each other. This condition occurs if suitable bypass sources are not available or if the
bypass sources feeding each system are not in sync with each other. Examples of this condition
are two systems supplied by separate diesel generator sets, or the bypass sources for the two
systems are lost.
The Eaton Sync Control can provide customer remote monitoring of sync control operation and
alarms. See paragraph 4.4 for detailed information.
Figure 1-1 shows the front view and Figure 1-2 shows the interior view of the Eaton Sync
Control.
Figure 1-1 Eaton Sync Control