218 ACS550 User’s Manual
Technical Data
Input Power Connections
Warning! Do not operate the drive outside the nominal input line voltage
range. Over-voltage can result in permanent damage to the drive.
Input Power Specifications
Disconnect Device
The ACS550 does not include a disconnect device. A means to disconnect input
power must be installed between the AC power source and the ACS550. This
disconnect device must:
• Be sized to conform to applicable safety regulations, including, but not limited to,
both national and local electrical codes.
• Be locked in the open position during installation and maintenance work.
The disconnect device must not be used to control the motor. Instead use the control
panel, or commands to the I/O terminals for motor control.
Fuses
Branch circuit protection must be provided by the end-user, and sized per national
and local electric codes. The following tables provide fuse recommendations for
short circuit protection on the drive’s input power.
Input Power (Mains) Connection Specifications
Voltage (U
1
)
208/220/230/240 VAC 3-phase (or 1-phase) +10% -15% for
ACS550-x1-xxxx-2.
400/415/440/460/480 VAC 3-phase +10% -15% for ACS550-x1-xxxx-4.
Prospective short-
circuit current
(IEC 629)
Maximum allowed prospective short-circuit current in the supply is 100 kA
in a second providing that the mains cable of the drive is protected with
appropriate fuses. US: 100,000 AIC.
Frequency 48…63 Hz
Imbalance Max. ± 3% of nominal phase to phase input voltage
Fundamental power
factor (cos
phi
1
)
0.98 (at nominal load)
Cable Temperature
Rating
90 °C (194 °F) rating minimum.
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