UPS 40 – 160 kVA, 400V 50/60 Hz output
User’s and Installation Guide
1023294
Revision C
17
6.
Connect phase L1, L2, and L3 rectifier input power wiring from source to the Rectifier
Input Terminals in the UPS cabinet. See wiring diagram for cable and fusing requirements.
Note!
The rectifier requires a Neutral to operate. It’s connected internally from the bypass ter-
minal to the rectifier, see wiring diagram.
7.
Connect phase L1, L2, L3, and Neutral bypass input power wiring from source to the
Bypass Input Terminals and Neutral Terminals in the UPS cabinet.
8.
Connect phase L1, L2, L3, and Neutral power wiring from Output Terminals and Neutral
Terminals to the critical load.
9.
Route battery cables from the Battery Cabinet to UPS Battery Terminal Block
Note!
UPS 40-80 kVA are delivered with (4) ferrite rings for battery cables and (2) ferrite clips
for control cables. Those should be installed both at the UPS cabinet end to improve the
EMC according to EU directives.
10. Connect positive, negative, and ground DC power wiring from battery cabinet to the
battery terminal Block and ground terminals in the UPS cabinet.
Note that the battery cables delivered with the battery cabinets are to be installed next to
the UPS cabinet. Cables with higher current capacity are needed if the external battery
cabinets or racks are installed with a distance from the UPS.
11. When all wiring is complete and the UPS system is connected to the facility power and
critical load, reinstall safety shield panels removed in previous steps.
12. Close door and secure with latch. If an external bypass switch shall be used, contact your
dealer first.
The UPS unit is now connected to the mains and to the load but there is no power. Make sure
that the connections are properly made.
Standards SFS 6000-5-52 (2002) and IEC 60364-5-52 (2001-08) “Electrical installations of
buildings” with normal 1.7xNeutral conductor rating for IT loads are used as a sizing guide.
For any other conditions, size the cables according to the local safety regulations regarding
installation environment, appropriate voltage and currents of the UPS.
Fuses are sized according to local safety regulations, appropriate input voltage and the rated
current of the UPS. Therefore, protect the input and bypass cables with gG (gL) fuses or B-C-D
type of circuit breakers against overload and short-circuit.
Contact the manufacturer’s authorised agent or the local office for assistance at fuse and cable
sizing. Refer to the recommended cable and fuse ratings in the below table.
Note!
In local solutions the two pole battery breaker ratings must be 300A / 500VDC with thermal mag-
netic trip and 48VDC undervoltage release
(e.g. ABB’s S5N300TDD-2AU7).