Loss Evaluation
A financial methodology assigning monetary value to transformer losses for optimal lifetime economic selection.
Loss evaluation assigns monetary values to no-load and load losses for economical transformer selection. Over 30-40 years, lifetime loss cost far exceeds purchase price.
TOC formula: Purchase + (A x P0) + (B x Pk), where A = $3-10/W (no-load factor), B = $1-5/W (load factor). Higher initial cost with lower losses often has lower TOC.
Many utility tenders specify evaluation factors requiring minimum TOC optimization.
QDTB provides detailed loss evaluation with each quotation. Efficiency standards comparison covers regional requirements.
Related Products
Related Terms
Core Loss
Power dissipated in the transformer magnetic core due to hysteresis and eddy currents, also called iron loss or no-load loss.
Copper Loss
Power lost as heat in transformer windings due to electrical resistance, proportional to the square of load current.
Efficiency Class (IE1-IE4)
International classification for transformer energy efficiency, IE1 (standard) to IE4 (premium) with progressively lower losses.
No-Load Loss
Power consumed when energized but not supplying load, consisting of core losses (hysteresis + eddy currents).
More Terms Starting with “L”
Load Tap Changer (LTC)
A mechanism allowing transformer tap ratio changes while energized and under load for real-time voltage regulation.
Leakage Reactance
Reactance from magnetic flux not linking both windings, a major component of transformer impedance.
Lightning Impulse Test
A high-voltage test simulating lightning surges to verify transformer insulation withstands transient overvoltages.
Lightning Arrester (Surge Arrester)
A protective device diverting high-voltage surges from lightning and switching to ground, safeguarding transformer insulation.
Need help with transformer selection?
QDTB engineers can help you choose the right equipment based on your specific requirements