Polycom 1500 Getting Started Manual page 58

RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Getting Started Guide
AC Power Supply connections:
1 Insert power cables to each of the three AC Power Entry Modules (PEMs)
.
DC Power Supply connections:
1 On the DC Power Rail Modules set the two circuit breakers to OFF
.
Two types of circuit breakers can be installed on the DC Power Rail Module (PRM). For more
information, see the RealPresence Collaboration Server (RMX) 4000 Hardware Guide.
2 Ensure that the cables from the Main that supplies electricity to the DC power units are OFF or
disconnected.
3 Remove the transparent plastic caps on the terminal block.
4 Using the two wires of a 10 AWG cable running from the DC power distribution unit, connect the
black wire into the -48VDC terminal block and the red wire to the RTN terminal block.
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