Which range corresponds to the locked-rotor kVA per horsepower when code letter D is on the nameplate?

Which range corresponds to the locked-rotor kVA per horsepower when code letter D is on the nameplate?

• A. 4.0 - 4.49
• B. 0 - 3.14
• C. 3.55 - 3.99
• D. 3.15 - 3.54

Answer: (A)

Locked-rotor kVA per horsepower tells you how much apparent power the motor would draw at the instant the rotor is prevented from turning, relative to its horsepower. The nameplate code letter is a compact way to convey that starting current level. For code letter D, the established table places it in the higher end of the ranges, specifically 4.0 to 4.49. That means the locked-rotor current, when related to the motor’s horsepower and operating voltage, falls in that 4.0–4.49 range. This is why this range is the best fit for code letter D. The other ranges would correspond to lower starting current values, which don’t align with the code letter D on the nameplate.

Locked-rotor kVA per horsepower tells you how much apparent power the motor would draw at the instant the rotor is prevented from turning, relative to its horsepower. The nameplate code letter is a compact way to convey that starting current level. For code letter D, the established table places it in the higher end of the ranges, specifically 4.0 to 4.49. That means the locked-rotor current, when related to the motor’s horsepower and operating voltage, falls in that 4.0–4.49 range. This is why this range is the best fit for code letter D. The other ranges would correspond to lower starting current values, which don’t align with the code letter D on the nameplate.