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Chapter 4: Handling, storage, and installation
Figure 18. Pullbox
22
SC9000 EP medium voltage drives IB020001EN—February 2016 www.eaton.com
See correct Appendix for diagrams showing standard
locations for incoming connections. Review the order
drawings supplied with the equipment for information on the
incoming terminal connections for your specific equipment.
Isolation panels must be removed to connect to the load and
line terminals. These isolation panels must be installed in the
original locations after making the load and line terminations.
Ensure that all connections are tight and of the proper
ampacity to carry the rated load. Cables should be properly
supported and braced, with special attention to ensure that
the insulation is protected from damage.
Load cable terminations are typically located in the left front
of the drive for an A Frame if there is no output filter or
bypass. For other frames, the load cables come out of the
inverter cabinet unless there is an output filter or bypass.
Load cables may exit either the top or bottom of the
structure. Ensure that the factory supplied phase barriers are
installed before energizing the drive. Failure to do so can
result in a flashover at the load connections.
Individual motor cable length should not be greater than what
is recommended in Section 2, Appendix D without consulting
the manufacturer. Motor cables must be kept separate from
line cables and control wiring to minimize the amount of
radiated noise from the motor cables. Cables must include
the proper insulation for the applied voltage. Special
specification cables are not required.
Control wires may enter the enclosure from either the top or
the bottom. A low voltage wireway is located in the drive
running from the conduit plates to the control section to
facilitate top and bottom entry of control wiring. Refer to the
order specific drawings for specific locations for control
wireways.
All cable/wire entry openings must be sealed to reduce the
risk of entry by rodents and to allow for proper airflow and
cooling of components.
The SC9000 EP is provided with a ground bus that runs the
full length of the drive. If the drive consists of multiple
shipping sections, the ground bus must be connected across
all shipping splits using the flexible shunts and hardware
supplied with the drive. These will be installed on the ground
bus and secured inside the drive shipping section.
Always ground the drive to prevent electrical shock and
reduce electrical noise. The user is responsible for meeting
all regulatory requirements with respect to grounding of the
drive. Failure to observe this precaution could result in bodily
injury or death.
Power factor correction capacitors or surge capacitors
must not be connected to the drive output.
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