QUICKSTART GUIDE
Electrical Installation
3
Electrical Installation
Wiring Guidelines
1.
Mount the drive as close as possible to the service entrance panel. Wire directly to the service entrance.
Do not connect to a sub-panel.
2. Use a dedicated branch circuit for the drive.
3. Route motor wiring out of the building as soon as possible. Separate input power and motor wiring by
at least 8 in. (20.3 cm).
4. Cross over other branch circuits and facility wiring at a 90
angle. If it is necessary to run wiring in par
-
allel, separate by at least 8 in. (20.3 cm).
5. All control wiring—sensors, switches, transducers, etc.—should be in a separate conduit routed individ
-
ually, not parallel, from high voltage wiring. In addition, any shielded cables should be properly
grounded.
Fuse/Circuit Breaker and Wire Sizing
Verify that the dedicated branch circuit for the drive is equipped with a properly-sized circuit breaker.
1
Based on a 3% voltage drop.
Maximum Motor Cable Length
1
Based on a 5% voltage drop.
NOTE:
Flat-jacketed submersible motor cable is recommended. Cable lengths shown are for the highest
power motor supported.
Risk of damage to VFD
,
or malfunction can occur.
Follow all wire routing and grounding instructions carefully. Inductive currents caused by parallel wiring,
or close proximity between high voltage and control wiring can cause unexpected behaviors.
•
Do not run input power and motor wires in the same conduit.
•
Do not run motor wires from multiple VFDs in common conduit.
•
Do not run control wiring parallel with high voltage wiring.
•
Do not install a magnetic contactor or disconnect in the motor circuit.
•
Do not run VFD wiring parallel with house or out-building wiring.
•
Do not use aluminum wires for VFD connections.
•
Do not use with a Ground Fault Circuit Interrupter (GFCI).
•
All wiring must comply with the National Electrical Code and local codes.
•
Improper splicing or damage to motor cable insulation may expose the conductor(s) to moisture and
can produce motor cable failure.
•
For retrofit application, make sure to check the integrity of power and motor leads. This requires
measuring the insulation resistance with a suitable megohm-meter.
Model
Input
Volts
Rated
Input
Amps
Fuse or
Breaker
Amps
AWG Copper Wire Sizes, 90° C Insulation, and Panel to Drive Cable Lengths (in feet)
1
10
8
6
4
3
2
1
1/0
2/0
SDCP-SUB2043
460 V
42 A
50 A
281
417
639
969
1172
1433
1711
2041
2443
SDCP-SUB1023
230 V
46 A
50 A
124
185
284
432
523
640
766
916
1098
Model
Output
Volts
Rated
Output
Amps
AWG 600V Copper Wire Sizes, 90° C Insulation, and Motor Cable Lengths (in feet)
1
10
8
6
4
3
2
SDCP-SUB2043
460 V
30 A
410
650
1030
–
–
–
SDCP-SUB1023
230 V
32.5 A
190
310
490
760
950
1000
