NSN 6680-00-881-3917
Part Details | TACHOMETER GENERATOR
6680-00-881-3917 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.
Alternate Parts: B457, 6680-00-881-3917, 00-881-3917, 6680008813917, 008813917
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-881-3917 | 20241 ( GENERATOR, TACHOMETER ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 6680-00-881-3917
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| B457 | 39739 | SCOTT FETZER COMPANY, THEDBA MERIAM PROCESS TECHNOLOGIES |
Technical Data | NSN 6680-00-881-3917
| Characteristic | Specifications |
|---|---|
| OVERALL LENGTH | 5.125 INCHES |
| OVERALL WIDTH | 2.438 INCHES |
| OVERALL HEIGHT | 2.438 INCHES |
| 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 |
| 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 |
| SPECIAL FEATURES | ABSOLUTE ACCURACY; 2 ROTOR POLES |