Electronic Fiber – Optic Current Transformer

Electronic Fiber-Optic Current Transformers (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 Electronic Fiber-Optic Current Transformer 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 EFOCT:

CONDIS Instrument Transformer product range is ideal for your transition to digital substation technology. CONDIS EFOCTs can be configured for the use in revenue metering, measurement of electric power quality parameters and relay protection & automation alike.

Article : METAS, Swiss Federal Institute of Metrology, proves high performance of CONDIS’ EFOCT, read Euramet’s case study on the topic

Product features

Parameter

Value

Rated voltage, kV

0 to 800

Rated primary current, A

300 to 190'000

Accuracy class

for measurements	0.05; 0.2S/2; 0.1; 0.2S; 0.5S
for protection	5TPE, 5Р

Range of operating temperatures, °С

measuring sensor	-60 to +70
electronic unit	-10 to +40

Rated short-time thermal current

Rated dynamic current

any

Rated frequency

From 0 to 2500 Hz

Distance between sensor and electronic unit, m

up to 1200

Power consumption, W

OUTPUT SPECIFICATIONS

DIGITAL

Standard	IEC 61850-9-2LE SV80; SV256 IEC 61850-9-2 IEC 61850-8-1
Sample rate	SV80; SV256
TIME	IEEE 1588-2008 (PTPv2); 1PPS optical, electrical
Redundancy	PRP; HSR

Analog (optional)

Current

1A 10 VA