Moving coil instruments with circular scale of 240° employ a platinum taut band for suspension of moving coil assembly instead of pivot & jewel system. It is less prone to sluggishness & zero shift due to frictionless movement.
These meters are basically used for the measurement of DC current & voltage, and can be used with built in rectifier for the measurement of AC current & voltage in the frequency range 45~65Hz. / 400Hz. The meters measure average value. It can be scaled to indicate RMS values (on request).
These instruments are not recommended for non-sinusoidal waveforms of current & voltage. The other indications like Frequency, Power & Power factor can be offered with suitable external transducers. Speed indication is possible if used with AC tacho-generator (not in the scope of AE).
Moving Coil Instruments
AE males rectifiers suitable for all electro - deposition process & also for battery charging purpose. These are made in air cooled or oil cooled construction. Automatic control of output voltage / current can also be provided. Features :
•Simple / rugged construction; in adequately thick sheet steel enclosure / tank.
•Very high efficiency for plating type rectifier - upto 86%, for battery charger -upto 80%.
•Operting temp. -45°C.
•Dimmerstat controlled / SCR controlled / mag-amp - controlled.
•Very low ripple content 5% for 3Ph units, can be provided better for special application.
D.C. Power Rectifiers
'AE' Built in Transducer type Watt / Var meter is equipped with a measuring transducer & a moving coil movement. It measures Active & Reactive power in single phase, three phase - three wire or four wire systems.
Features :
• Built in transducer.
• Panel wiring is reduced.
• Economy.
