Practical values of power factor: Difference between revisions
From Electrical Installation Guide
(updated according to guide 2013) |
(cleaned up source: table format, etc ...) |
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(see '''Fig. L6''') | (see '''Fig. L6''') | ||
{| style="width: 774px; height: 418px | {| class="wikitable" style="width: 774px; height: 418px" width="774" | ||
|- | |- | ||
! colspan="3" | Equipment and appliances | |||
! cos φ | |||
! tan φ | |||
|- | |- | ||
| | |||
*Common induction motor | *Common induction motor | ||
| loaded at | |||
| | |||
0% | 0% | ||
| Line 25: | Line 25: | ||
100% | 100% | ||
| | |||
0.17 | 0.17 | ||
| Line 36: | Line 36: | ||
0.85 | 0.85 | ||
| | |||
5.80 | 5.80 | ||
| Line 48: | Line 48: | ||
|- | |- | ||
| | |||
*Incandescent lamps | *Incandescent lamps | ||
*Fluorescent lamps (uncompensated) | *Fluorescent lamps (uncompensated) | ||
| Line 54: | Line 54: | ||
*Discharge lamps | *Discharge lamps | ||
| | |||
| | |||
| | |||
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 | ||
| | |||
0<br>1.73<br>0.39<br>2.29 to 1.33 | 0<br>1.73<br>0.39<br>2.29 to 1.33 | ||
|- | |- | ||
| | |||
*Ovens using resistance elements | *Ovens using resistance elements | ||
*Induction heating ovens (compensated) | *Induction heating ovens (compensated) | ||
*Dielectric type heating ovens | *Dielectric type heating ovens | ||
| | |||
| | |||
| | |||
1.0<br>0.85<br>0.85 | 1.0<br>0.85<br>0.85 | ||
| | |||
0<br>0.62<br>0.62 | 0<br>0.62<br>0.62 | ||
|- | |- | ||
| | |||
*Resistance-type soldering machines | *Resistance-type soldering machines | ||
*Fixed 1-phase arc-welding set | *Fixed 1-phase arc-welding set | ||
| Line 83: | Line 83: | ||
*Arc-welding transformer-rectifier set | *Arc-welding transformer-rectifier set | ||
| | |||
| | |||
| | |||
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 | ||
| | |||
0.75 to 0.48<br>1.73<br>1.02 to 0.48<br>1.02 to 0.75 | 0.75 to 0.48<br>1.73<br>1.02 to 0.48<br>1.02 to 0.75 | ||
|- | |- | ||
| | |||
*Arc furnace | *Arc furnace | ||
| | |||
| | |||
| 0.8 | |||
| 0.75 | |||
|} | |} | ||
'''''Fig. L6:'''''<i> Values of cos | '''''Fig. L6:'''''<i> Values of cos φ and tan φ for commonly-used equipment</i><br> | ||
[[ru:Практические значения коэффициента мощности]] | [[ru:Практические значения коэффициента мощности]] | ||
[[zh:功率因数的实际值]] | [[zh:功率因数的实际值]] | ||
Revision as of 13:10, 15 November 2013
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
