Optical Current Sensors
New Macey’s strategic relationship with Smart Digital Optics SDO provides an opportunity to represent a range of optical current transducers which provide unparalleled performance and ease of use in a range of geometries and rated voltages.
Smart Digital optics research facility has developed a range of optical current transducers. these faraday effect devices are utilised for the measurement of both dc and ac currents up to 500ka at high or low voltage.
The FOCS sensor head is a loop of sensitive optical fibre in a weather proof ring-shaped housing. The primary conductor passes through the ring and the fibre loop is linked to the control room by standard telecommunications optical fibre, passing first through the polymer link. All electronics are in the control room.
Features:
- Meets all ANSI and IEC metering and protection class accuracies.
- Rated primary currents up to 500kA.
- Applications exceeding 1MV.
- Unaffected by external magnetic fields.
- No possibility of explosive failure.
- Flexible geometry.
- Small size and light weight.
- No seismic constraints.
- Flexible range of interface options including IEC61850 and low power analog.
- Stable and accurate over a long period of time.
- Wide dynamic range able to fulfil both metering and protection functions.
- Free of oil or SF6 gas.
- Passive optical transducer design.
- Link to control electronics using inexpensive standard optical fibre.
Conventional CT |
SDO Optical Current Sensor |
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