power factor improvement
power factor improvement
(OP)
thread238-135043
what is the difference in installing capacitors at HT side (transformer side) than on LT side (load side)
what is the difference in installing capacitors at HT side (transformer side) than on LT side (load side)






RE: power factor improvement
Gunnar Englund
www.gke.org
RE: power factor improvement
When resonance is concerned, there are on the market capacitor banks with anti-resonant and filtering abilities.
RE: power factor improvement
Cost is the main point though I have used a number of 3.3kV PFC units in the past for MV MCC's, though there were no power electronics drives involved.
When specifying PFC for LV MCC's and switchboards I always advocate using detuned banks. These are larger and more costly as the cabinets have to house the rejection reactors as well as the capacitors (and the heat load is higher).
RE: power factor improvement
RE: power factor improvement
1) Place the correction as close to the inductive load. ie the motor condulet.
2) Correct the entire system as close to the point of sell. ie utility metering.
Both have pros and cons.
You need to know what your trying to accomplish with the correction. As stated earlier more effecient, or avoid the lagging current penalties from the power company.