What is the impedance voltage standard of a power transformer?
High-low 12-14%, medium-low 7-9%; buck: high - medium 12-14% High - low 22-24%, medium - low 7-9%
35kV on-load pressure: ≥2000kVA≤2500kVA, 6.5%; ≥3150kVA≤5000kVA, 7.0%; ≥6300kVA≤10000kVA, 7.5%; ≥12500kVA, 8%;
66kV: ≤ 5000kVA, 8%; ≥6300kVA, 9%;
110 kV: double windings are 10.5%; three winding boost: high - medium 17-18%, high - low 10.5%, medium - low 6.5%; buck: high - 10.5%, high - low 17-18% , Medium - low 6.5%
10kV / 0.4kV non-excitation or on-load regulation: ≤ 500kVA, 4%; ≥ 630kVA, 4.5%;
10kV / 3,3.15,6.3kV without excitation: 630kVA, 4.5%; ≥630kVA, 5.5%;
35kV without excitation: ≤2500kVA, 6.5%; ≥3150kVA≤5000kVA, 7.0%; ≥6300kVA≤10000kVA, 7.5%; ≥12500kVA, 8%;
