Motorola Solutions Inc. 89FC5805 Manuel D’Utilisation
Simulcast Hardware Installation
Connecting Power to the STR 3000 Rack
Do NOT daisy-chain multiple equipment cabinet grounds using a single ground
wire. Doing so increases the overall inductance of the ground wire which can
distribute surge energy among the cabinets instead of to the master ground bar.
wire. Doing so increases the overall inductance of the ground wire which can
distribute surge energy among the cabinets instead of to the master ground bar.
See Standards and Guidelines for Communications Sites (68P81089E50) for detailed
information on grounding the rack.
information on grounding the rack.
Connecting Power to the STR 3000 Rack
The STR 3000 rack requires a -48 VDC, which is provided by the DC power distribution.
Figure 5-4 shows the typical connections for power to the STR 3000 rack.
Figure 5-4 shows the typical connections for power to the STR 3000 rack.
Figure 5-4
Typical Power Connections for the STR 3000 Rack
Determining Power Connection Wire Size
Wire size recommendations contained herein reflect Motorola engineering requirements for
proper system operation. Local regulations should be adhered to and will supersede any
other specifications in this manual, where applicable.
proper system operation. Local regulations should be adhered to and will supersede any
other specifications in this manual, where applicable.
Do not use wire smaller than 16 mm2 CSA (5 AWG). Cable loop voltage drop
must not exceed 500 mV for cabling of the -48 VDC and DC return leads.
must not exceed 500 mV for cabling of the -48 VDC and DC return leads.
68P81003Y71-O November 2002
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