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5 Slide the cover into place over the terminal block
Figure 58: Connecting the DC Power Cables (Part 2)
6 Connect the cables to the DC source voltage, using hardware appropriate to the installation site and
following local and national electrical codes.
7 Energize the DC circuit.
Leave the ESD strap permanently connected to the rack, so that the strap is always available when you
need to handle ESD-sensitive components.
Connecting the Model 10933 or 10934A DC power supply to a -48V source
To connect the DC power input cables on the Model 10933 or 10934A power supplies to a -48V source:
1 Verify that the DC circuit is de-energized.
2 Attach an ESD-preventive wrist strap to your bare wrist and connect the metal end to an appropriate
ground point on the rack.
3 Slide the cover off the terminal block
4 Connect the DC power input cables as follows:
a On each terminal, loosen the screw enough to allow the spade terminal to slide underneath the
captive square washer.
b Slide the spade terminal of the negative wire (–48 V) under the captive square washer on the
negative terminal (labeled –48V).
c Slide the spade terminal of the positive wire (–48 V RTN) under the captive square washer on the
positive terminal (labeled RTN).
E4G Series Routers Hardware Installation Guide
(Figure
+24V
-24V
(+)
(–)
(Figure
59).
Replacing a DC Power Supply in the E4G-400 Router
58).
SH_211A
83
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