“POWERMAG” a simple eddy current adjustable dynamometer, is a totally new concept in dynamic load system for accurate testing appliations of all type of electric motors, engines and other rotating machinery’s.
The need for a dynamic load system which allows flexibility of appliations in an economical way has been felt for a long time in technical education institutes, research and development, quality control in industry, and “POWERMAG” eddy current adjustable dynamometer provides the ideal solution for such applications.
The primary elements of POWERMAG adjustable dynamometer are an eddy current clutch, a tachometer, and a separate solid state controller. POWERMAG eddy current adjustable dynamometer absorb power, torque and speed characteristics with a unique hystersics braking system which provides frictionless torque loading (0% to 100% constant/variable torque load) independent of shaft speed. The eddy current adjustable dynamometer provides torque by the use of two basic components- a reticulated pole structure with output shaft which connected to the spring balance weighing gear load and a speciality steel rotor drum with input shaft assembly-fitted together but not in physical contact. The prime mover under test suitably arranged on a common bed plate could drive the input. Until the pole structure is energized, the rotor drum can spin freely on its shaft bearings.
When a magnetizing force from the field coil is applied to the pole structure, the air gap becomes a flux field and the rotor is magnetically restrained, providing a braking action between pole structure and rotor drum. A solid state electronic controller is used to excite the field coil. The torque is proportional to coil current. An integral tachogenerator is mounted on the input rotor shaft, to give voltage and frequency proportional to speed, which is used for speed indication (RPM), so that simultaneously torque and speed of the motor can be read under 0% to 100% load test.
POWERMAG eddy current adjustable dynamometer tests of all kinds and when equipped with them carries out various dynamic characteristic tests and operating mode tests of all type of motors, engines and other rotating machineries.
POWERMAG eddy current adjustable dynamometer are widely used in technical education institutions, research & development laboratories, quality control in industry, defence organizations, etc., for accurate analysis of power, torque, speed, fuel and lubrication consumption and quick pass/fail testing of all type of engines, motors and other rotating machinery.
POWERMAG eddy current adjustable dynamometer possesses certain unique features, which gives it a clear advantage over conventional loading systems.
POWERMAG eddy current adjustable dynamometer functions without the need for mechanical contacts. This eliminates the main cause of wear. Further, the stationary coil is protected against adverse atmospheric conditions; the use of commutators, brushes and sliprings is avoided and control is achieved at a relatively low power level.
POWERMAG electronic controller provides finger-tip operation and flexible control of the eddy current dynamometer from 0% to 100% torque load.
All POWERMAG eddy current adjustable dynamometer comes with
POWERMAG offers single and three phase power analysers indicating panel to measure the electrical input power.The power analyser option allows for capturing volts amps,watts, frequency, power factor and temperature rise.
POWERMAG eddy current dynamometer also offered with torque sensors and digital torque indication meter for testing virtually all type of electric motors, engines and rotating machinery’s.