Flexible Electronic Fiber-Optic Current Transformers
NEW ! Read our 2020 CIGRE Paper “Monitoring of asymmetric short circuit currents at a hydro power plant using electronic fibre optical current transformers“. This paper presents a solution implemented by Swiss TSO Swissgrid AG, to monitor asymmetric short-circuit currents using Flexible Electronic Fibre Optical Current Transformers (F-EFOCT) and digital fault recorders.
Flexible Electronic Fiber-Optic Current Transformers (F-EFOCT) are an alternative to Conventional Current Transformers with inductive transducers for high-precision current measurement and power quality control, in medium and high voltage systems. These innovative current transformers provide digital output according to the IEC 61850 standard for your metering and protection infrastructure. The F-EFOCT excels with a very high stability over a large temperature range, optimal performances over an increased frequency bandwidth, as well as a wide dynamic range and good performance under transient operations.
Applications for F-EFOCT
CONDIS® Instrument Transformer product range is ideal for your transition to digital substation technology. CONDIS® F-EFOCTs can be configured for the use in revenue metering, measurement of electric power quality parameters and relay protection & automation alike. Due to its adaptable current sensing head, the F-EFOCT can easily be installed at existing infrastructure such as cable terminations or generator busbars.
|Rated voltage, kV||0 to 800|
|Rated primary current, A||300 to 190'000 |
|Range of operating temperatures, °С|
|Rated short-time thermal current|
|Rated frequency||From 0 to 2500 Hz|
|Distance between sensor and electronic unit, m||up to 1200|
|Power consumption, W||50|