About the 250FN4042
250FN4042 is a 460 VAC non-regenerative FlexPak 3000 drive controller that is manufactured by Reliance Electric. This drive has a rated horsepower of 250 HP, unless a conversion kit is applied, in which case the rated horsepower is cut in half. The rated field current is 15, the full load RMS AC line current is 351, and the full load rated DC armature current is 412. Pay attention to the danger, warning, and caution alerts listed in the associated FlexPak 3000 drive manual when operating this drive. High voltage is indicated by danger alerts, bodily injury may occur if warning procedures are not followed, and equipment damage may occur if caution procedures are not followed.
The drive’s input kva is contingent upon the drive’s horsepower rating. The maximum speed is 72 Hz, and the minimum speed is 2.4 Hz. The voltage offset is 0 to 18 V. Both the acceleration and deceleration rates are 4 to 140 seconds, which can be changed by jumper selection on the VFC board. The current limit is 50 to 150% of the rated amperes. There are 3.1 to 27.0 volts per hertz on this drive. The maximum load on the motor is 150% of the continuous ampere rating for one minute. The service factor is 1. The output voltage is 0 to 460 VAC. The displacement power factor is 0.96. The A-C line voltage is 3 phase, 460 V ± 10%. The maximum A-C line distribution system capacity is 100,000 AMP symmetrical fault current.
