Product Profile of A. C. Synchronous Motors
Gravity Engineering offers A.C. Synchronous Motors. Gravity Engineering manufactures Miniature Synchronous AC/DC Gear Motors. The A.C. Synchronous Motors are of ungeared low speed 60 RPM @ 50Hz and come at large torque range from 2kg-cm to 60 kg-cm in three NEMA frame sizes that of O.D. 2.3 "[58 mm], 3.4 " [86 mm] & 4.2" [108 mm]. They also come in 10 different models. The A.C. Synchronous Motor consists of 3 lead two phase wound stator & permanent magnet rotor.
Key Features of A. C. Synchronous Motors
- Instant start, stop & reversible
- Insulation Class-B
- Starting, running & stalling currents are same
- Magnetically rotor can be locked by D.C. applying
- Power coated cast aluminum body with steel shaft
- A.C. Operation: This motor can be directly connected to 240 V; 50Hz supply along with factory supplied R-C network in series with one of the stator winding. Change of this R-C network from one winding to other results reversal of motor direction. Single pole three position switch can be used for Forward, Reverse & Off control
- Starting: Motor start within 1 and 1/2 cycles of its applied frequency & will reach 60 RPM within 5 to 30 mS at 50 Hz. Since motor has no significant current rise on starting, this motor is ideal to an application which requires six or more starts per minute.
- Stalling: Motor will not be overheated if stalled because starting full load and no load currents are same
- Inertia Limitations: Since the motors are having extremely rapid starting, there is a limit to the inertia load at which the motor will start from rest
