13-09-2014, 09:48 AM
Optical current transformer and its applications
Optical current.ppt (Size: 1.21 MB / Downloads: 133)
INTRODUCTION
An accurate electric current transducer is a key component of any power system instrumentation.
OCT’s defined as sensors that directly or indirectly use optical sensing methods to measure electric currents .
ADVANTAGES
No risks of fires & explosions.
High immunity to Electromagnetic interferences.
Wide frequency response.
Larger Dynamic Range.
Low voltage outputs-compatible with the inputs of digital to analog converters.
No need to use metallic wires to transfer the signal and so simpler insulation structure than conventional current transformer.
CONCLUSION
A new type of current transducer is introduced known as magneto optical current transducer.
This magneto optical current transducer eliminates many of the drawbacks of the conventional current transformers.
By applying Faraday’s principle this transducer provides an easier and more accurate way of current measurements. This MOCT is widely used in power systems and substations nowadays.