Practical values of power factor: Difference between revisions
From Electrical Installation Guide
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== Average power factor values for the most commonly-used equipment and appliances == | == Average power factor values for the most commonly-used equipment and appliances == | ||
(see | (see {{FigRef|L6}}) | ||
{| class="wikitable | {| class="wikitable" | ||
|- | |- | ||
! colspan="3" | Equipment and appliances | ! colspan="3" | Equipment and appliances | ||
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*Discharge lamps | *Discharge lamps | ||
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| | | | ||
| | | | ||
1.0<br>0.5<br>0.93<br>0.4 to 0.6 | 1.0<br>0.5<br>0.93<br>0.4 to 0.6 | ||
| Line 68: | Line 68: | ||
*Dielectric type heating ovens | *Dielectric type heating ovens | ||
| | | | ||
| | | | ||
| | | | ||
1.0<br>0.85<br>0.85 | 1.0<br>0.85<br>0.85 | ||
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*Arc-welding transformer-rectifier set | *Arc-welding transformer-rectifier set | ||
| | | | ||
| | | | ||
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0.8 to 0.9<br>0.5<br>0.7 to 0.9<br>0.7 to 0.8 | 0.8 to 0.9<br>0.5<br>0.7 to 0.9<br>0.7 to 0.8 | ||
| Line 95: | Line 95: | ||
*Arc furnace | *Arc furnace | ||
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| 0.8 | | 0.8 | ||
| 0.75 | | 0.75 | ||
Revision as of 16:32, 6 December 2016
Average power factor values for the most commonly-used equipment and appliances
(see Fig. L6)
| Equipment and appliances | cos φ | tan φ | ||
|---|---|---|---|---|
|
loaded at |
0% 25% 50% 75% 100% |
0.17 0.55 0.73 0.80 0.85 |
5.80 1.52 0.94 0.75 0.62 |
|
1.0 |
0 | ||
|
1.0 |
0 | ||
|
0.8 to 0.9 |
0.75 to 0.48 | ||
|
0.8 | 0.75 | ||
Fig. L6: Values of cos φ and tan φ for commonly-used equipment
