ASSOCIATED ELEKTRODYNE INDUSTRIES PVT. LTD. Midc, Pune, Maharashtra

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This is a variable speed dynamometer, capable of both motoring and absorption duty. In case of absorption duty, the power absorbed by the prime mover under test is absorbed in the load bank. The load control is obtained partly by armature control (coarse) and partly by field control (fine). For motoring duty, a variable voltage D. C. Power source is required. Speed control is obtained partly by voltage control (coarse) and partly by field control (fine).   A universal D. C. dynamometer is an ideal tool for the Research and Development work. A typical application of universal dynamometer is in measuring Frictional Horse Power of I. C. engines.

This instrument controls speed/torque of the engine remotely. Two remote operating stations are provided. One station is on the instrument front face with two pairs of push buttons, Of which one pair is for Continuous Rotation in Forward or Reverse direction and second is for Inching in Forward or Reverse direction. Second station is a toggle switch with centre off position situated on the motor unit for Continuous Rotation in Forward or Reverse direction. This facility offers great convenience to the operator to set initial position of the safety link at engine idle speed. A safety link is used to hold the throttle lever securely at full throttle position.       DIMENSIONS & SPECIFICATIONS Size : 2U DIN Standard 19" Rack system Depth Max 16"(406mm) Electrical Input : 220 VAC, Single phase, 50 Hz, approx.30 W Electrical Output : To drive 12V DC motor Throttle Drive through Link Mechanism with built in safety unit is provided with the equipment. Two modes of operation are provided viz. Manual (MAN) and Automatic (AUTO). Computer interfacing signals are provided at the back side of the instrument in D shell connectors.   MODES OF OPERATION Two remote operating stations are provided From panel front face through push button controls, following direction control is available. Fast Forward Fast Reverse Inch Forward Inch Reverse Toggle switch facility with a fast reverse and forward direction control on the motor unit is provided for operator convenience.

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Eddy current dynamometer is the latest type of absorption dynamometer popularly used for testing prime movers like diesel engines, petrol engines, electric motors, pneumatic motors, etc. These dynamometers offer good accuracy and excellent stability. Eddy current dynamometers offer excellent control response to electronic controller. The present trend in industry is to replace hydraulic dynamometers with eddy current dynamometers   The basic dynamometer system has two units :   Mechanical absorption unit, and Electronic controller, which incorporates digital indication of speed and torque. Their are three modes of operations like constant speed, constant torque and constant current. Highly powerful fail safe safeties to protect dynamometer are incorporated. Optional computer interface is also available.   The electronic unit plays an important role in operating dynamometer in different modes. ICA offers very efficient and reliable electronic controller. This unit displays torque/load and speed on digital indicator. It offers 3 modes of dynamometer operation by controlling excitation current in the coil through firing angle control of SCR's.   I = Constant ---------------- The inner loop control. T = Constant ---------------- For fixed speed prime movers. N = Constant ---------------- For variable speed prime movers. The speed is measured using magnetic reluctance type sensor and 60 teeth gear wheel. The sensor directly generates TTL output. The speed indicator has also builtin diagnostics to indicate failed sensor or broken sensor wires. The load/torque indicator uses 6 wire load cell system that offers high end accuracy. Electronic controller also incorporates safety circuits like dynamometer body temperature high (HI-T), cooling water low pressure safety (LO-P). High excitation current safety (HI-C). Over speed safety (HI-N) etc. If any safety limit gets crossed, the excitation current is cut off and LED of that particular safety glows. This helps to rectify fault. Optionally, we can provide computer interface and automation in engine/motor testing. APPLICATION Eddy current dynamometer is an ideal tool for production testing of prime movers like diesel engines, gasoline engines, pneumatic motors and electric motors, industrial drives and transmission systems. It is equally suited for Research and Development work.   Same capacity in bidirectional operation. Excellent stability. Better accuracy. Easier and smoother load control. Suitable for remote control. Instantaneous response to load control, ideally suited for all types of governing Tests. Very little down time and maintenance. Low noise-levels. Quiet operation. Direct reversibility of direction. Longer life because of low wear and tear of moving parts. Extremely rugged construction. Small and compact. Wide range of power and speed. Excellent mechanical stability.

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This is a single phase or three phase alternator, of special design, depending upon its capacity and application.The power developed by the prime mover is absorbed in a load bank.   Load control is obtained partly by armature control(coarse), and partly by field control, (fine).   APPLICATION AC Absorption dynamometers are ideally suited for testing petrol engines for mopeds and electrical F.H.P. motors. Their main advantage lies in the fact that they are self aircooled and hence water cooling or additional air cooling is not required. This advantage is particularly significant in case of moped engines and F.H.P. motors, which are also aircooled.    

This is a constant speed, single phase or three phase machine depending upon capacity and application. SPECIAL FEATURES Low cost Minimum maintenance Rugged construction Suitable for operation off 220 V single phase A. C. or 440 V three phase A. C. mains supply. APPLICATION A. C. motoring dynamometer is ideally suited for determining the power requirement of utilities like pumps, fans, compressors etc.

We also manufacture complete test cells for testing of diesel and gasoline engines. A typical test cell includes : Dynamometer (usually eddy current type ) with toqrue weighing mechanism. Control console including - Remote engine controls like speed, start, stop etc. Remote engine indications like speed, exhaust temperature, lube oil temperature, lube oil pressure, cooling water inlet and outlet temperatures etc. Remote dynamometer controls like load control. Remote dynamometer indications like water pressure, water temperature etc. Several alarms like high water temperature, low pressure etc.