Fiber-Optic Current Sensor FOCS

Sensor Performance

Max. measurable current± 600 kA (including overcurrent)
Sampling rate4 kHz
Accuracy ( 1% to 120% of Ir)±0.1% of measured value

Sensor Outputs
Analog outputs of Ir (unidirectional)0…1 V and 0…20 mA or
0.2...1 V and 4…20 mA
Analog outputs of Ir (bidirectional)± 1 V and ± 20 mA
Bus communicationABB PowerLINK (standard)
PROFIBUS DP slave (optional)
RelaysChangeover contacts for alarm/trip signalling

Operating - ambient conditions
Sensor head-40° C to +80° C
Sensor electronics (w/o forced air cooling)-25° C to 55° C

Protection Class
Sensor electronicsIP 00, always to be mounted in a control cubicle
Optical fibersIP 67

Power supply
Standard input24 VDC, -15% to +20%
Power consumption< 60 W

Physical dimensions
Sensor electronics dimensions (WxHxD)450x101x136 mm3
Sensor electronics weight< 5 kg
Sensor head7 standard sizes or on request
Sensor head weight< 15 kg
Sensor fiber cable15 m to 70 m

Selectable protection features
Instantaneous overcurrent detection
Inverse time overcurrent detection
Instantaneous reverse current detection
Additional features
Optional Process Panel PP820Current indication and setting changes
Ah and kAh counter pulsesover PROFIBUS DP and PowerLINK

More details can be found in the ABB FOCS Brochure (3BHS362996E01)


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