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National Stock Number:
6680-00-881-3917
Federal Supply Class:
6680
National Item Identification Number:
008813917
Description:
GENERATOR,TACHOMETER
Detail:
A GENERATOR CONSISTING OF A SERIES OF MOUNTED COILS SURROUNDING A ROTATING PERMANENT MAGNET OR A PERMANENT MAGNET AND A ROTATING ARMATURE. THE VOLTAGE OUTPUT IS DIRECTLY PROPORTIONAL TO THE SPEED OF ROTATION OF THE SHAFT. WHEN USED WITH AN ASSOCIATED INDICATOR, TRANSMITS SUCH DATA AS REVOLUTIONS PER MINUTE, SPEED OF TRAVEL, AND THE LIKE. MAY ALSO BE USED IN SERVOMECHANISM LOOPS AS A SYSTEM STABILIZER. EXCLUDES ROTARY INVERTERS, ROTARY CONVERTERS, MOTOR GENERATORS, DYNAMOTORS, GENERATOR SETS, SYNCHROS, FREQUENCY OR PHASE CHANGERS, AND ENGINE ACCESSORY GENERATORS.
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Manufacturer Information:
| B457 | 39739 | SCOTT FETZER COMPANY, THE |
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Techincal Specification:
| OVERALL LENGTH | 5.125 INCHES | | OVERALL WIDTH | 2.438 INCHES | | OVERALL HEIGHT | 2.438 INCHES | | LENGTH OF SHAFT FROM HOUSING | 0.562 INCHES SINGLE END | | MOUNTING METHOD | FIXED BASE AND | | FACE | | MOUNTING FACILITY TYPE AND QUANTITY | 4 THREADED HOLE | | NOMINAL CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH | 1.875 INCHES | | NOMINAL CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO WIDTH | 1.875 INCHES | | CURRENT TYPE | AC OUTPUT | | CURRENT RATING IN AMPS | 0.003 SINGLE OUTPUT | | TERMINAL TYPE AND QUANTITY | 1 RECEPTACLE | | CALIBRATION VOLTAGE OUTPUT TYPE IN VOLTS | 21.0 AC | | CALIBRATION SPEED IN RPM | 4200.0 | | ELECTRICAL RESISTANCE | 40.0 OHMS | | ROTOR SPEED RATING IN RPM | 100.0 LOW FULL LOAD AND | | 4200.0 HIGH FULL LOAD | | SHAFT END CHARACTERISTIC | A15 SINGLE STYLE SINGLE END | | WIDTH ACROSS FLATS | 0.2440 INCHES NOMINAL SINGLE END | | SPECIAL FEATURES | ABSOLUTE ACCURACY; 2 ROTOR POLES | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 39739 | | DESIGN CONTROL REFERENCE | B457 |
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