Power Quality Monitoring

▼Chapter 7Fixed compensationSelection table – fixed compensation of motorsMotorpowerin kWCapacitor power in kvar(dependent upon speed/minute)1500 1000 7501 - 1,9 0,5 0,6 0,72 - 2,9 1 1,2 1,33 - 3,9 1,5 1,7 24 - 4,9 2 2,3 2,55 - 5,9 2,5 2,8 36 - 7,9 3 3,5 48 - 10,9 4 4,5 511 - 13,9 5 6 714 - 17,9 6 7 818 - 21,9 7,5 8,5 1022 - 29,9 10 11,5 12,530 - 39,9 ca. 40% ca. 43% ca. 50%> 40 ca. 35% ca. 38% ca. 55%Guideline values for fixed motor compensation (PFC) according VDEWNote:• Values are guide valuesonly• The capacitor powershould be approx 90%of the idle motor power• Over-compensation mustbe avoided to preventoverexcitation▼Selection table forfixed compensationof transformersTransformernominal powerin kVACapacitornominal powerin kvar100 5160 6.25200 7.5250 10315 12.5400 15500 20630 25800 301000 401250 501600 602000 80Note:• Values are guide values only• Regional regulations of energy supply companiesmust be observed• Pay attention to the respective back-up fusesand short-circuit proof cables209