English-8 PowerFlex 400 Adjustable Frequency AC Drive Quick Start
Power Terminal Block Specifications
Important: Frame C, D, and F drives utilize a finger guard over the
power wiring terminals. Replace the finger guard when
wiring is complete.
Refer to the PowerFlex 400 User Manual for maximum power cable
length recommendations.
Input Power Conditions
Frame Maximum Wire Size
(1)
(1)
Maximum/minimum sizes that the terminal block will accept - these are not
recommendations. If national or local codes require sizes outside this range, lugs may
be used.
Minimum Wire Size
(1)
Recommended
Torque
C 8.4 mm
2
(8 AWG) 1.3 mm
2
(16 AWG) 2.9 N-m (26 lb.-in.)
D 33.6 mm
2
(2 AWG) 8.4 mm
2
(8 AWG) 5.1 N-m (45 lb.-in.)
E 480V
37-45 kW
(50-60 HP)
33.6 mm
2
(2 AWG) 3.5 mm
2
(12 AWG) 5.6 N-m (49.5 lb.-in.)
E 240V
30-37 kW
(40-50 HP)
480V
55-75 kW
(75-100 HP)
107.2 mm
2
(4/0 AWG) 53.5 mm
2
(1/0 AWG) 19.5 N-m (173 lb.-in.)
F 152.5 mm
2
(300 MCM) 85.0 mm
2
(3/0 AWG) 19.5 N-m (173 lb.-in.)
Input Power Condition Corrective Action
Low Line Impedance (less than 1% line
reactance)
• Install Line Reactor
(1)
• or Isolation Transformer
(1)
Refer to the PowerFlex 400 User Manual for accessory ordering information.
Line has power factor correction capacitors • Install Line Reactor
(1)
• or Isolation Transformer
Line has frequent power interruptions
Line has intermittent noise spikes in excess of
6000V (lightning)
Phase to ground voltage exceeds 125% of
normal line to line voltage
• Remove MOV jumper to ground
(Frame C, E & F drives only)
• or Install Isolation Transformer with
grounded secondary if necessary
Ungrounded distribution system
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