Chapter 4 - Electrical Connections
Chapter 4 - Electrical Connections
Confidential and Proprietary Information o
Confidential and Proprietary Information of ZTE CORPORATION
f ZTE CORPORATION
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Refer to Section “Requirements for Binding Cables” in this chapter
Refer to Section “Requirements for Binding Cables” in this chapter
for details about binding cables.
for details about binding cables.
Caution:
Caution:
To ensure operation safety, first connect the grounding
To ensure operation safety, first connect the grounding
cable and make sure that
cable and make sure that
it is reliably connected.
it is reliably connected.
During connection, do not mix up the neutral cable, live
During connection, do not mix up the neutral cable, live
cable and grounding cable to avoid circuit short. Make sure
cable and grounding cable to avoid circuit short. Make sure
the neutral cable is reliably connected.
the neutral cable is reliably connected.
During connection, do not connect the positive and
During connection, do not connect the positive and
negative battery cable reversely; otherwise battery will be
negative battery cable reversely; otherwise battery will be
damaged.
damaged.
The two UPS cannot be supplied by one battery pack.
The two UPS cannot be supplied by one battery pack.
To connect cables in serial hot
To connect cables in serial hot
backup mode:
backup mode:
1.
1.
Remove the short circuit cable of the master UPS.
Remove the short circuit cable of the master UPS.
Before delivery, the short circuit cable is connected between the
Before delivery, the short circuit cable is connected between the
BYPASS L
BYPASS L
(bypass live) terminal and the
(bypass live) terminal and the
AUX
AUX
(bypass auxiliary)
(bypass auxiliary)
terminal. In serial hot backup mode, remove the short-circuit
terminal. In serial hot backup mode, remove the short-circuit
cable of the master UPS. Do not remove the short-circuit cable
cable of the master UPS. Do not remove the short-circuit cable
of the slave UPS.
of the slave UPS.
2.
2.
Connect grounding cables.
Connect grounding cables.
For each UPS, there are two grounding cables to be connected.
For each UPS, there are two grounding cables to be connected.
i.
i.
Connect one grounding cable between the
Connect one grounding cable between the
PE
PE
terminal for
terminal for
AC input (
AC input (
AC IN
AC IN
) and the equipment room busbar.
) and the equipment room busbar.
ii.
ii.
Connect the other grounding cable between the
Connect the other grounding cable between the
PE
PE
terminal
terminal
for AC output (
for AC output (
AC OUT
AC OUT
) and the equipment room busbar.
) and the equipment room busbar.
During laying the grounding cable, keep them as short and
During laying the grounding cable, keep them as short and
straight as possible.
straight as possible.
