However, if there is a power demand of over 45 unit loads on one Power Supply Module, an Auxiliay Power Unit is generally required. This will support an additional 20 unit loads.
If one or more of the following conditions exist, the system may need an Auxiliary Power Unit:
●The maximum number of voice terminals are connected to the system.
●Several voice terminals have accessories and the voice terminals do not have Voice Terminal Power Supply Units.
●There are long wiring runs between the control unit and the voice terminals.
●The lights on some of the voice terminals become dim or go out altogether when many employees use their voice terminals simultaneously.
NOTE: Only one Auxiliary Power Unit can be connected to a carrier.
To determine the number of unit loads for each Power Supply Module on each carrier, determine the types of modules and types of voice terminals connected to them. Then see Table
See the equipment supplier for a complete list of power accessories.
