CHAPTER 3 ND-71548 (E)
Page 72
Issue 2
INSTALLATION PROCEDURE
This NAP explains the following work items.
• Connection of Power and Ground Cables
• Connection of DC-DC Converter for Telephone sets equipped with Message Waiting Lamps
• End Jointing of Power and Ground Cables
• Branching of Power Cables
1. CONNECTION OF THE POWER AND GROUND CABLES
CAUTION: Grounding circuit continuity is vital for safe operation of telecommunication equipment.
Never operate telecommunication equipment with grounding conductor disconnected.
NAP-200-008
Sheet 1/13
Connection of Power and Ground
Cables from the Power Equipment
Cable Running Run the power and ground cables per
Figure 008-1 and Figure 008-3.
Running of power and ground cables to the
Power Receiving Terminals in the BASEU
An example of cable running on a free access or
computer floor is shown in Figure 008-1.
Confirming that the Circuit Breaker (NFB) of the Rectifier is OFF.
Connection of the power and ground cables Connect the power and ground cables to the
Power Receiving Terminals on the BASEU per
Figure 008-3.
Connect the power and ground cables to the
output terminals of the Rectifier.
Check after cable connections Using a continuity tester, confirm that the -48 V
power cable is not shorting to the G power cable
or FE ground cable.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
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END