| Title |
The Determination of Reference Impedance on 1P2W Low Voltage System in Korea |
| Authors |
Moon-Ho Kang ; Yang-Hyoo Song ; Heyng-Ho Lee |
| Keywords |
Reference Impedance ; System Impedance ; Low Voltage System ; IEC 00725 |
| Abstract |
Home appliances, like air-conditionals, washers, refrigerators, etc., can cause voltage fluctuations and light flicker. A standardized flicker test has been established in Europe (IEC 61000-3-3, IEC 61000-3-ll). The supply impedance of power supply system varies from place to place, and for the flicker test in KOREA, the appliance manufacturers do need standardized impedance like the one indicated in IEC 61000-3-3 for 230[V]/50[㎐]. Without it, the same appliance will have different flicker level at different places. For appliance manufacturers, the flicker limit should be related to the reference impedance. However, the European flicker test is designed for 230[V]/50[㎐] power and needs to be modified for a IP2W(220[V]/60[㎐]) supply system in KOREA. In this paper, the reference impedance for KOREA (220[V]/60[㎐]) systems is proposed. The measured result provided in this paper was served as a proposal for establishing KOREA reference impedance for 220[V]/60[㎐] and has been published in IEC 60725. |