Results

'Justification for NPS [Negative Phase Sequence] Injection'

'Assesment of HARP04 Accuracy in Unbalanced Calculations'

'Simple measurement of NPS voltage percentage'

'Simple formulae for NPS V%'

'Appendix 1: Comparing Calculated and Measured NPS and Harmonics'

Letter from M G Dewk, System Technical Engineer to E M Eulson, copied to Messrs D G Robertson, D S Crisford and D C Howroyd, regarding NPS Relays for East Coast Main Line Supplies

'Working Group on Unbalance from DC Traction Supplies: Use of Peak/Mean Ratios'

Letter from M G Dwek to E M Eulson on the subject of B R Load and 3-Phase Circuit Rating