Keysight Power Distribution Unit Installation Guide
20
Connecting the Old Style Switch
The PDU Installation Kit and current-production instrument racks contain a
switch with five terminals on the back. This switch has a green LED indicator that
should appear on the left when the switch is installed (see Figure 8). However, if
you are installing a new PDU in an older rack installation, it may have the older
switch with six terminals on the back. This switch has the indicator light on the
right side when installed. If your system has this older, six-terminal switch, the
correct wiring connections are as shown in Figure 10 below.
Figure 10
Main Power Switch Connection (old-style switch)
If you replace the old six-terminal switch in your rack installation with the new
five-terminal switch provided in the PDU Installation Kit, you must wire the
PDU(s) as shown in Figure 9.
The low voltage master switch removes power only from the PDU outlet
receptacles. To completely remove power from the PDU and rack system,
the PDU power cord must be removed from the premise electrical system
or, if the rack is connected to a dedicated circuit breaker, the breaker
shall be opened.
