MIL-M-17060E(SH)
AMENDMENT 1
15 May 1981
MILITARY SPECIFICATION
MOTORS,
60-HERTZ,
ALTERNATING CURRENT, INTEGRAL-HORSEPOWER,
SHIPBOARD USE
This amendment forms a part of Military Specification
MIL-M-17060E(SH) ,
dated 20 May 1977.
PAGE 1
2.1,
under
“SPECIFICATIONS, FEDERAL”, delete reference to “QQ-I-666”;
add the following:
"FF-B-171
- Bearings, Ball,
Annular (General Purpose).
QQ-A-601
- Aluminum Alloy Sand “Castings.”
PAGE 2
2.1,
under
"SPECIFICATIONS, MILITARY”, delete reference to
MIL-P-15137”:
delete MIL-G-24508 - Grease, High performance, Ball and
Roller Bearing" and substitute “DOD-G-24508 - Grease, High performance,
Multi-Purpose (METRIC)”.
2.2,
"INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)”
add:
IEEE STD 112
- Test Procedures for Polyphase Induction
Motors and Generators."
PAGE 3
2.2. under “AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)”, add
“ASTM A 47
- Malleable Iron Castings."
PAGE 7
3.1.12.2:
Delete and substitute:
“3.1.12.2
Locked-rotor current. The locked rotor current for 440V
a.c.
motors shall be in accordance with the values specifies in table IV.
Single speed design B motors driving centrifugal auxiliaries with synchro-
nous speeds of 1200 through 3600 r/rein with locked rotor and pull up
torques equal to a minimum of 70 percent of full load torque may exceed
the values specifies
in table IV by no more than 5 percent.
For other
than 440V a.c. motors,
the current ratio shall be inversely proportional
to the ratio of applicable voltages.
Motors shall withstand locked rotor
current for 20 seconds (see 3.4.10).”
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