Reassembling The 300Kva And 400Kva Cabinets - Liebert 7400 Series User Manual

Chapter 3 - Installation Procedure

Reassembling the 300kVA and 400kVA cabinets

Reassembling the 300 kVA and 400 kVA cabinets
3.3
3-14
Issue 2
(02/98)
6310018a.02.doc
Place the cabinets in their final position as shown in figure 3-6 ensuring
any protective packaging is removed (Inverter Cabinet on the right and
Rectifier/Static Switch Cabinet on the left), and connect them together
following the procedure below:
Ensure loose cables are not trapped between the two cabinet frames.
1. Align the Rectifier/Static switch and Inverter Cabinets and bolt them
together through the holes provided.
2. Open the doors to the Inverter cabinet and remove the lower
protective cover to gain access to the a.c. busbars R, S, T & N from
the output transformer T1.
3. Locate the four a.c. busbars from the Output Isolator numbered 7(R),
8(S), 9(T) and 10(N) in the Rectifier/Static Switch cabinet and the
linking straps connected to them. Take the free end of the linking
straps and connect them to the Inverter cabinet a.c. busbars ensuring
correct phase connection as illustrated in figure 3-6.
4. Ensure the transformer transportation stabilising bar is removed.
Refit the lower protective cover to the Inverter cabinet.
5. Open the upper inner left hand protective door of the inverter cabinet
to gain access to the d.c. busbars.
6. Open the doors to the Rectifier/Static Switch cabinet and open the
inner upper right hand door to gain access to the d.c. busbars.
7. Using the two angled copper busbar links provided, connect the
Rectifier/Static Switch cabinet d.c. busbar to the Inverter Cabinet d.c.
busbar as illustrated in figure 3-6.
8. Locate the flat cable assembly FC17 from CN8 on the Inverter Logic
board in the Inverter cabinet and secure to the end panel, in the
position illustrated in figure 3-6.
9. Locate the flat cable assembly FC17 from CN2 on the UPS Logic
board in the Rectifier/Static Switch cabinet and connect to cable
assembly FC17 secured above.
10. Locate wires 27, 28, 29, 30, 31, 32, 33, 98 & 99 terminated in
connector CN4 and wires 7, 8, 9 & 10 terminated in connector CN5
in the Inverter cabinet and secure the connectors into cabinet end
panel in the positions illustrated in figure 3-6.
11. Locate the Rectifier/Static Switch cabinet cable assemblies from the
Interface board which terminate in connectors CN4 and CN5 and
connect to CN4 and CN5 secured above.
12. Close the inner protective doors and outer doors to both cabinets.
7400 Series UPS User Manual
Single Module and One plus One Systems
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