DM4380 – Installation Guide
204.4336.00 - October/2019
The PSU 125 AC has three-pin IEC 320/C14 plug power terminals located in rear panel
of the equipment.
The PSU 125 power supplies operate in a 1:1 redundancy manner, with only one being
sufficient to maintain full operation of the equipment. The combination of AC and DC
power supplies in the same equipment is allowed. The insertion/removal of power
cables and the PSU 125s can be hot-swapped, allowing the uninterrupted operation of
the equipment, if one of the two power supplies is turned off or presents failures. The
PSU 125 has a PWR LED on its front panel that, when GREEN, indicates that it is
correctly powered and operational.
Figure 9 - PSU 125 DC front panel
Figure 10 - PSU 125 AC front panel
The equipment is de-energized through its power cable (s). The power
outlet must be nearby and easily accessible.
The electrical installation of the site should be protected by devices
against short circuits.
On the PSU 125 DC, fuses F1 and F2 support currents up to 15A. They
are 86V Fast Acting. If necessary, only replace it with one of the same
specifications. The F3 output fuse supports currents up to 15A. It is also
86V Fast Acting. If necessary, also replace it with another one with the
same specifications.
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