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Chapter 4: Handling, storage, and installation
Low voltage pathways between drives and Ampgard are most
often located in the center of the drive side sheet (Figure 15).
In each case, pull apart terminal blocks are the general method
of providing breaks between units (Figure 16).
Figure 15. Low voltage pathway between splits
Figure 16. Low voltage termination at split
20
SC9000 EP medium voltage drives IB020001EN—February 2016 www.eaton.com
The order outline drawing will show the sequence in which
the sections are to be joined. A bus bar splice kit and a
connecting hardware kit is supplied for each open joint
between sections.
Remove the bus compartment top cover plates from the
two adjacent sections to be joined. Store lifting angles for
possible future use. Also remove any knockouts in the side
plates that will be used, e.g., for control cables.
Place the transformer shipping section into position. Move
Drive/drive
the inverter shipping split(s) into position alongside the first
low voltage
and use the 3/8 x 1.50 inch bolts and companion hardware to
pathway
connect the two side plates. Place one flat washer under the
bolt head and one flat washer and one lock washer under the
nut. Tighten each bolt to 12 ft-lb (16 Nm). On Frame C, D,
and E only, move the input shipping split into position
alongside the first and use the 3/8 x 1.50 inch bolts and
companion hardware to connect the two side plates. Place
one flat washer under the bolt head and one flat washer
and one lock washer under the nut. Tighten each bolt to
Drive/Ampgard
12 ft-lb (16 Nm).
low voltage
pathway
Connect the main bus bars using the splice kit provided
(where applicable). Tighten bolts to 25 ft-lb (33 Nm).
Figure 17. Main bus shipping split connection
Example of
Internal control wires and power cables will have to be
low voltage
termination
connected across any shipping splits.
at split
Standard connections across shipping splits for a
Frame B drive are as described below (see Appendix B
for section details):
Ground bus from Inverter section to transformer section
●
(Section 2 to 1)
Power cables from DC bus to line side bus of Inverter
●
(Section 1 to 2)
Power cables from drive output terminals to the load-side
●
bus of inverter (Section 1 to 2)
Fiber optic cables from inverter to control card rack
●
(Section 2 to 1)
Control wiring from Inverter to control compartment
●
(Section 2 to 1)
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