Ac Input Panels; Overview - ABB GPS4827 User Manual

5. AC Input Panels

Overview

AC Service
The ac input panel provides the facility to terminate 3-phase ac service to the GPS 4827 system or to
distribute individual 1-phase ac supplies to each rectifier position. Depending upon the option ordered,
the panel will connect 3-wire (three phases), 4-wire (three phases + neutral), or individual
(single phase, either 2 hot leads or 1 hot lead and neutral) input ac service.
Some options provide circuit breakers to protect the conductors providing ac service to the individual
rectifiers. Other options provide a terminal strip and the conductors are protected by circuit breakers
located in the building's ac service panel.
Note: See AC input table in the Specification section for recommended conduit size, wire size and
protector size based on the National Electric Code.
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Figure 5-1: AC Input terminal strip panel
Figure 5-2: AC block.
Factory wiring from AC block to rectifier shelf shown.
2-wire