IEC TR 61000-3-13 CORR 1-2010 Electromagnetic compatibility (EMC) - Part 3-13 Limits - Assessment of emission limits for the connection of unballanced installat.pdf

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1、April 2010 IEC/TR 61000-3-13 (First edition 2008) Electromagnetic compatibility (EMC) Part 3-13: Limits Assessment of emission limits for the connection of unbalanced installations to MV, HV and EHV power systems CORRIGENDUM 1 Figure A.2 Replace the existing Figure A.2 by the following: Unbalance re

2、duction factor (TuUM): HV and MV measurement 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 012345678 Days HV NPS Unbalance (%) MV NPS Unbalance (%) Power (p.u. on 20MVA base) Reduction Factor Reduction in motor loading Unbalance reduction factor (T uUM ): HV and MV measurement 0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8 0 1 2 3 4 5 6 7 8 Days HV NPS Unbalance (%) MV NPS Unbalance (%) Power (p.u. on 20 MVA base) Reduction Factor Reduction in motor loading IEC 699/10 Figure A.2 Example of unbalance ratio measurement for a remote mine with largely motor loading