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MIL-M-17059A(SHIPS)
3.1.11 Types. - The motors shall be designed for the following types, as specified (see 6.1 and 6.2.11
through 6.2.18):
Single-Phase.-
Capacitor-start.
Permanent-split capacitor.
Two-value capacitor.
Shaded pole.
Split-phase.
Universal.
Synchronous.
Three-phase. -
Squirrel-cage induction.
Synchronous.
3.1.12 Torque and current limitations. -
3. 1.12.1 Basis of horsepower rating. - When the breakdown torque of single-phase motors other than
the universal type is specified, the horsepower rating shall be in accordance with tables II and III.
Table II- Induction motors, except shaded-pole
and permanent-split capacitor motors.
Note 1. - Breakdown-torque range includes the higher figure down to, but not including, the lower figure
Note 2. - The horsepower rating of motors designed to operate on two or more frequencies shall be de-
termined by the torque at the highest rated frequency.
4

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