Dakota Supply Group - Index

Dakota Supply Group - dakotaoctober - Index

AUTOMATION 44
continued from page 43
both the nameplate motor HP and nameplate
motor FLA requirements. Account for any known
operating conditions, such as operating the motor
into its service factor, by using the motor’s service
factor horsepower and amperage to make your
selection.
Drive Selection Example
A 240V single-phase submersible pump application
incorporates a 7.5 HP, 230Vac pump assembly
rated at 20A RMS, with a service factor rating of
23A RMS. Determine the proper drive assuming:
A) No service factor operation is required.
B) Service factor operation is required.
Solution:
A) No service factor operation is required:
Requirements:
7.5 HP
20 Amps RMS
Variable Torque (120% overload is sufficient)
B) Service factor operation is required:
Requirements:
8.6 HP (7.5 HP 23A/20A)
23 Amps RMS
Variable Torque (120% overload is sufficient)
Note: Depending on input line voltage level and
maximum load HP required, it will be advantageous
to consider using a 208Vac pump assembly to
ensure adequate HP production for Solution A
and Solution B.
For any single-phase
application, please
contact us here
at DSG – we’re
here to help!
www.dakotasupplygroup.com
Leigh Trosen
Communications Group Manager