• "Specific Consumer Guidelines" consumer who will install, add or renew harmonic generating equipment. If any of the maximum values is exceeded, this This guideline sets forth the maximum harmonic currents outgoing from a high-voltage or especially high-voltage receiving guideline requires that consumer to take certain suppression measures.
• Maximum values of outgoing harmonic currents per 1 kW contract power Application of the specific consumer guidelines Install, add or renew equipment Equal to or less than reference capacity Calculation of equivalent capacity total Equivalent capacity total Above reference capacity Calculation of outgoing harmonic current Not more than harmonic current upper limit? More than upper limit Harmonic suppression measures necessary Equal to or less than upper limit Harmonic suppression measures unnecessary Conversion coefficient Equivalent capacity limit Harmonic content (when the fundamental current is considered as 100%) 54 3.
PRECAUTIONS FOR USE OF THE INVERTER 3.2 Power supply harmonics Received power voltage 5th 7th 11th 13th 17th 19th 23rd Over 23rd 6.6 kV 3.5 2.5 1.6 1.3 1.0 0.9 0.76 0.70 22 kV 1.8 1.3 0.82 0.69 0.53 0.47 0.39 0.36 33 kV 1.2 0.86 0.55 0.46 0.35 0.32 0.26 0.24 Classification Circuit type Conversion factor Ki 3 Three-phase bridge (capacitor smoothing) Without reactor K31 = 3.4 With reactor (AC side) K32 = 1.8 With reactor (DC side) K33 = 1.8 With reactors (AC, DC sides) K34 = 1.4 4 Single-phase bridge (capacitor smoothing, double voltage rectification) Without reactor K41 = 2.3 With reactor (AC side) K42 = 0.35 Single-phase bridge (capacitor smoothing, full-wave rectification) Without reactor K43 = 2.9 With reactor (AC side) K44 = 1.3 5 Self-excitation three-phase bridge When a high power factor converter is used K5 = 0 Received power voltage Reference capacity 6.6 kV 50 kVA 22/33 kV 300 kVA 66 kV or more 2000 kVA