"SERVODYN" a simple eddy current adjustable dynamometer, is totally new concept in dynamic load system for accurate testing application of all type of electric motors, engines and other rotating machines. The need for a dynamic load system which allows flexibility of applications in an economical way has been felt for a long time in technical education institutes, research and development, quality control in industry, and "SERVODYN" eddy current adjustable dynamometer provides the ideal solution for such applications. It's very easy to install & simple to operate. It saves considerable time while testing the products. It reads Torque, Kilowatt, RPM in digit and efficiency of the testing product with accuracy.

"SERVOPACK CONTROLLER"

• A Standardised range of S.C.R. Electronic Control unit to provide easy finger-tip control of speed, torque, tension or other drive parameters.
• Low Power Electronic Controller with Digital RPM Meter.
• Common design same low cost control unit can handle 0.5 to 60 HP.
• Standard speed regulation is 2% of maximum speed for 90% load change.

Principle of Operation:

The eddy current adjustable dynamometer provides torque with the use of two basic components - a reticulated pole structure with output shaft which is connected to the spring balance weighing gear load and a special steel rotor drum with input shaft assembly fitted together but not in physical contact. The motor under test suitably mounted 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 magnetized force from the field coil is applied to the pole structure, the air gap becomes a flux field and the rotor is magnetically restrained, result into braking action between pole structure and rotor drum. A solid state electronic controller is used to excite the field coil. Torque is proportional to coil current. An integral tachogenerator mounted on the input rotor shaft, to give voltage and frequency proportional to speed, is used for speed indication (RPM), so that simultaneously torque and speed of the motor can be read under 0% to 100% load test.

Features:

• Torque is transmitted by a magnetic field without friction or wear.
• Simple & Rugged Design.
• Low maintenance cost.
• It's Stationary field coils, no-slip-rings or moving contacts.
• Dynamically balanced rotating parts and over sized bearings to ensure long, maintenance free service.