It calculates the reactive power to install to obtain the desired power factor (cosø) starting by the initial power factor (cosø).

Data input

Initial power factor (cosø):

cosø

Required power factor (cosø):

cosø

Active power

kW

Circuit voltage

V

Working frequency

50 Hz

60 Hz

Mono-phase line.

One capacitor

One capacitor

Tri-phase line.

3 capacitors in star configuration

3 capacitors in star configuration

Tri-phase line.

3 capacitors in delta configuration

3 capacitors in delta configuration

Results |
|||

PFC reactive power to install | kVAr | ||

Initial apparent power | kVA | ||

Final apparent power | kVA | ||

Percentage of saving | % | ||

Capacity of each capacitor to install | µF | ||

RMS voltage at capacitors | V eff |

**Notes.**

To obtain optimal results the PFC must be local (close to the machinery),
in this way you will recover also the loss on the supply line.

**Example of characterisic cosø to correct :**

- 0.5 - 0.6 : fluorescent lamps (neon) complete with reactor.
- 0.3 : high pressure sodium lamps complete with reactor.

**Example of correction a 32 W neon lamp :**

- cosø Initial = 0.6
- cosø required = 0.98
- kW = 0.032
- V = 220
- Hz = 50
- mono-phase line.

Instructions

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Notices