ABB ACS 502 Series, Installation & Start-Up Manual

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Chapter 4 – ACS 504 Installation Instructions
ACS 502 Installation & Start-up Manual 4-9
Power Connections
Input and Output Power
Wiring
Four conductors (three phase plus a ground wire) are required for the input
and output wiring. Use copper conductor rated for 1
67°
F (
75°
C). Input and
output conductors and branch circuit protection must be sized to local codes.
WARNING:
• Do not connect or disconnect input or output power wiring, or control
wires, when power is applied.
• Never connect line voltage to drive output Terminals U
2
, V
2
, and W
2
(T
1
T
2
, T
3
).
• Do not make any voltage tolerance tests (Hi Pot or Meggar) on any
part of the unit. Disconnect motor wires before taking any
measurements in the motor or motor wires.
• Make sure that power factor correction capacitors are not connected
between the drive and the motor.
Note that the 600 volt units are supplied with an AC input choke. This choke
MUST be installed for the unit to operate properly.
Figure 4-6 and Figure 4-7 show the connections of the ACS 504.