Motor Locked-Rotor Ampere Sizing

$0.99

7for iPhone

Yuhsiu Lai

Developer

Jan 12, 2017

Update Date

Education

Category

Age Rating

Apps in this category do not contain restricted content.

Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

Motor Locked-Rotor Ampere Sizing Screenshots

iPhone

About Motor Locked-Rotor Ampere Sizing

This tool calculates the maximum motor locked-rotor current, which is also known as LRA, in amperes for single and poly-phase Design B, C and D motors as per Table 430.251(A) and 430.251(B) of NEC (2011).

The LRA is the amount of current drawn by motor loads when the motors start (during startup motor is not turning).

The LRA is much larger than the full load ampere or FLA (the current drawn when motor is turning).

The rating calculated with this tool can be used in selection of disconnecting means and controllers for motors as determined from HP and voltage rating and design letter.

This app is tested with all iOS platforms including iPhone and iPad.