4.4 External Power Wiring Installation
To install wiring:
1.
Route the wiring to the UPS terminal blocks in the UPS. Figure 4-4 for wiring access information
and terminal locations.
2.
Ground the UPS according to local and/or national electrical wiring codes by routing and connecting the
ground wire to the input ground lug.
3.
Connect phase A, B and C rectifier input power wiring from the utility source to the rectifier input, See
paragraph 3.2.2 for wiring and termination requirements.
4.
Bypass input power wiring from the utility source to the bypass input terminals and neutral terminals. See
paragraph 3.2.2 for wiring and termination requirements.
5.
Connect phase A, B and C power wiring from output terminals to the critical load. See paragraph 3.2.2 for
wiring and termination requirements.
6.
Mains input N , Output N and Bypass input N are connected together inside UPS.
7.
If wiring interface connections, proceed to paragraph 4.5.
WARNING
•
HIGH TOUCH CURRENT. EARTH CONNECTION ESSENTIAL BEFORE CONNECTING
SUPPLY. As a result of the connected loads high leakage current is possible. Connection of the
earth (ground) is required for proper product operation. Do not check UPS operation by
removal of the Earth (ground) connection.
•
If
a
4
pole
Automatic Transfer Switch (ATS) is installed upstream of the UPS, ensure that ATS
switching will not break the Neutral line.
•
BAT+/BAT- are terminals connected to the battery cabinet, polarity should use red
cable, battery - polarity should use black or blue cable.
•
This device may not be fitted with an optional internal mains disconnection device. If not
fitted, it is essential that the customer install such a device at the installation site near the
UPS.
•
Input
neutral
line
should
be
directly
connected to input “N” terminal of UPS wire connection
terminal bay without AC input idle-run.
•
There
are
protective earthing terminals within the UPS for mains supply, load supply and
battery. The battery cabinet earth protection can be connected either to the UPS or to a
common earthing terminal outside the UPS.
26
Eaton 93E XL UPS (10-40kVA, 380/400/415V) Installation and Operation
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