No.T5120268 UUC Manufacturer Model Serial no. Client Calibration date -2- Ambient condition Pressure Temperature Humidity VLF Hipot Test Set GOLDSOL VLF-60TD 00018945 MATANEEPAN Co.,Ltd. November 15, 2022 1015 2 hPa 26 2 oC 56 5 % 1.Voltage measurement – Test limit : ± (3% of reading + 10 V) Equipment used - Voltage transducer “HAEFELY” Type TMS-PT-581-100 Serial no. 060506-5, 082-493-06 - Wide band power analyzer “NORMA” Model D 6000 Serial no. RO 76614 SR Reference measured (kV) 10.0 20.0 25.0 30.0 40.0 50.0 60.0 UUC Applied (kV) 10.10 19.70 25.40 30.80 39.70 50.50 59.70 Estimated Test limits (kV) Minimum Maximum 9.70 10.30 19.40 20.60 24.30 25.70 29.10 30.90 38.80 41.20 48.50 51.50 58.20 61.80 uncertainty (% ) 0.23 0.30 0.22 0.16 0.15 0.16 0.18 2.Current measurement Equipment used - Digital multimeter "AGILENT" Model U1252B Serial no. MY52010059 Reference measured ( A) 120.0 179.0 249.0 299.0 358.0 418.0 479.0 582.0 604.0 UUC Applied ( A) 122.0 183.0 247.0 293.0 366.0 425.0 490.0 594.0 614.0 Estimated uncertainty (%) 0.88 0.85 0.82 0.82 0.87 0.82 0.82 0.82 0.82 Error (%) + 1.67 + 2.22 - 0.83 - 2.00 + 2.23 + 1.67 + 2.29 + 2.10 + 1.66 3.%Tan delta and Capacitance test Test limit : – %TD = ± (1 % of reading + 0.04 %) – Capacitance = ± (1 % of reading + 1 pF) Equipment used - Calibration unit “OMICRON” Type CP CAL1 Serial no. AJ152C Reference applied TD (%) Cap.(μF) 0.0050 0.9391 0.0470 0.9425 0.3975 0.9614 Voltage (kV) 10.0 Current ( A) 269.0 269.0 269.1 TD(%) Reading 0.005 0.047 0.399 Test limits (%) Min. Max. 0.004 0.006 0.039 0.052 0.384 0.406 Cap. Reading 0.931 0.948 0.953 Test limits (μF) Min. Max. 0.9296 0.9481 0.9325 0.9514 0.9514 0.9706 No.T5120268 -3- Equipment used - Power factor calibration standard "DOBLE" Model M-10C Serial no. 016 Reference applied TD (%) Cap.(μF) 0.024 0.274 0.109 0.275 0.207 0.278 0.506 0.285 1.016 0.296 2.029 0.298 5.036 0.312 Voltage (kV) 10.0 Current (mA) 2.7 2.7 2.7 2.8 2.7 2.7 2.7 TD (%) Reading 0.022 0.109 0.206 0.499 1.014 2.032 5.125 Test limits (%) Min. Max. 0.019 0.028 0.101 0.110 0.204 0.209 0.497 0.512 0.987 1.017 1.996 2.052 4.947 5.128 Cap. Reading 0.275 0.274 0.279 0.285 0.296 0.297 0.309 Test limits (μF) Min. 0.2713 0.2722 0.2753 0.2822 0.2930 0.2950 0.3089 The reported uncertainties are based on standard uncertainties multiplied by a coverage factor k = 2, providing level of confidence of not less than 95 %. Max. 0.2767 0.2776 0.2806 0.2879 0.2990 0.3010 0.3151