4.
DESCRIPTION OF CONNECTIONS AND SYSTEM ASSEMBLY
This entire section is dedicated to installer/maintainer only
4.1 Power supply connection
The EV PROM5Z master and EV PROS8Z slaves (if present) must be powered by a 24dv power source coming from an certified EN54-
4 power supply and according to the diagram here below. The sizing of the 24dc line shall take into account the current absorbtion
of master, slave unit, microphone stations and zone modules. Please refer to the technical specifications section for these details.
Power amplifiers shall be also powered by, or shall integrate, an EN54-4 power supply.
Wiring of power supplies – Master, slaves and amplifiers.
The figure above show explicitly the positive and negative connection of the power line that feeds the Proevac system.
The power supply line to the amplifies is shown schematically. Please refer to the manuals of power amplifiers and power supply.
Proevac requires a ground connection between the Master (and slaves of present) and the chassis of the rack cabinet where the
system is installed. The rack cabinet must be connected to a strong earth connection of the building.
It is recommended to periodically check the earth connection with appropriated instruments in order not to affect
the performance of the system.
Proevac’s electrical ground (negative pole of system power) is connected to the chassis.
