Cabling Procedure - Liebert 7200 Series User Manual

Chapter 3 - Insatallation Procedure
Connecting the UPS power cables
3.3.6

Cabling procedure

Once the equipment has been finally positioned and secured, connect the power cables as described in
the following procedure.
Study the connection diagram in figure 3-5.
1. Verify that the UPS equipment is totally isolated from its external power source and all the UPS
power switches are open.
2. Connect the a.c. input supply cables between the mains distribution panel and the UPS rectifier
input supply busbars and tighten the connections to 10 Nm. If a separate bypass supply is not
provided ensure the links are fitted between the rectifier input supply busbars and the bypass
input supply busbars (see figure 3-5).
ENSURE CORRECT PHASE ROTATION.
3. If a separate bypass supply is provided, connect the UPS bypass input supply cables between
the bypass distribution panel and the UPS bypass input supply busbars and tighten the
connections to 10 Nm. Ensure that any links fitted between rectifier input and bypass busbars
are removed (see figure 3-5).
ENSURE CORRECT PHASE ROTATION.
4. Connect the UPS output cables between the UPS output busbars and the load distribution panel
and tighten the connections to 10 Nm.
Page 3-8
Issue 6
(03/98)
document in response to "powersure ups"
7200 Series UPS User Manual
Single Module and 1+1 Parallel System