591.x No analog signal from OCR unit
Description
OCR (Over Current Reduction) monitor
No analog signal from the OCR unit. The measured reference voltage in setup on A004 analog input 2 is less than 0.1 volt.
Remedy
- Check the monitor taps.
- Check the wiring to the A004 feeder node.
- Take measurements in short circuit at 4000Â A, 300 Hz and sine. Compare the results with the reference measurement (test report).