TY - BOOK AU - BOLLEN MATH H J AU - HASSAN FAINAN TI - UNDERSTANDING POWER QUALITY PROBLEMS SN - 978-81-265-3039-7 U1 - 621.31 BOL CY - NEW DELHI KW - ELECTRICAL KW - POWER QUALITY VOLTAGE SAGS INTERRUPTIONS N1 - UNDER TEQIP PHASE-II ER -