Installation Manual

Power Wiring
9000X AF Drives MN04001004E—May 2011 www.eaton.com 5
Power Wiring
Guidelines
To ensure proper wiring, use the following guidelines:
●
Use heat-resistant copper cables only, 75°C or higher
●
The input line cable and line fuses must be sized in
accordance with the rated input current of the unit.
See Pages 6–9
●
Provide a ground wire with both input power and output
motor leads
The control should be installed in accordance with all
applicable codes. In accordance with NEC 430 Part IV, a
protective device is required in the installation of the control.
This protective device can be either a fuse or a circuit
breaker. An RK fuse is an acceptable component. For
maximum protection, Eaton recommends a Class T fuse.
Input line cable and line fuses must be sized in accordance
with tables on Pages 6–9.
●
If the motor temperature sensing is used for overload
protection, the output cable size may be selected based on
the motor specifications
●
If three or more shielded cables are used in parallel for the
output on the larger units, every cable must have its own
overload protection
●
Avoid placing the motor cables in long parallel lines with
other cables
●
If the motor cables run in parallel with other cables, note
the minimum distances between the motor cables and
other cables given in the following table
Cable Spacing
Note: The cable spacings also apply between the motor
cables and signal cables of other systems.
●
The maximum lengths of the motor cables are as follows:
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1–2 hp, 230V units, 328 ft (100m)
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All other hp units, 984 ft (300m)
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The motor cables should cross other cables at an angle of
90 degrees
●
If conduit is being used for wiring, use separate conduits
for the input power wiring, the output power wiring, the
signal wiring, and the control wiring
SVX9000/SPX9000 Drive Short-Circuit
Current Rating
The SVX9000/SPX9000 drive has a maximum symmetrical
short-circuit current (ISC) rating of 100 kA rms. The ISC
ampere rating is in accordance with the requirements of
UL 508C “Standard for Power Conversion Equipment”.
These requirements cover “open or enclosed equipment that
supplies power to control a motor or motors operating at a
frequency or voltage different than that of the input supply”
including devices rated 1500 volts or less. The SVX9000/
SPX9000 drive series uses an electronic overcurrent
protection feature for compliance with the UL 508C
requirement.
Branch circuit protection must be provided in accordance
with local codes.
Minimum Distance Between
Cables in ft (m) Cable in ft (m)
1 (0.3) ≤164 (50)
3.3 (1.0) ≤656 (200)