Installation Liebert EXL S1
46
User Manual 10H52226UM60 - Rev. 1 - 01/2017
Figure 23 - External protection devices
3.6. External electrical connections
T
o access the external electrical connections, open the front door of the UPS and remove the
secondary access panel (see Fig. 19-Fig. 22). Connect the ground cable (PE) first at .
Make sure the UPS is isolated before removing panels.
Notice
For a TN-C distribution system, connect an insulated jumper between UPS ground
and the UPS Neutral connector.
Refer to local Standards and regulations for the correct jumper cross
section.
Connect line power cable PEN to the UPS Neutral connector (N).
Notice
Ensure that the line power and load conductors are connected to the UPS as a
clockwise (right hand) 3 phase system.
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