Unit Of Energy; K Factor - AEMC PowerPad III 8336 User Manual

4.1.3.2 UNIT OF ENERGY

The Wh menu defines the unit of energy for displayed data.
Use the up and down arrow buttons to select the unit:
● Wh: watt-hour
● J: joule
● toe (nuclear): nuclear tonne oil equivalent
● toe (non-nuclear): non-nuclear tonne oil equivalent
● BTU: British Thermal Unit
Press to confirm the selection and return to the Configuration menu.

4.1.3.3 K FACTOR

The FK menu defines the coefficients used for the calculation of the K factor (Factor K). This value is used for weighting
the harmonic load currents in accordance with their effects on transformer heating. A higher K factor indicates larger
harmonic heating effects.
Use the arrow buttons to set the value of coefficients q and e:
● q: exponential constant that depends on the type of winding and the frequency. The value of q can range from
1.5 to 1.7. The value of 1.7 is suitable for transformers having round or square conductors, in all types of winding.
The value of 1.5 is suitable for those in which the low-voltage windings are in tape form.
● e: ratio between the losses linked to eddy currents (at the fundamental frequency) and resistive losses (both
evaluated at the reference temperature). The value of e can range from 0.05 to 0.1.
Power Quality Analyzer PowerPad III Model 8336
®
Figure 4-8
Figure 4-9
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