Apfc Panel Circuit Diagram
Automatic power factor controller circuit diagram.
Apfc panel circuit diagram. Incomer circuit breaker mccb shall be mounted in a separate compartment and metering compartment along with apfc relay etc shall be separate. Pic 16f877a microcontroller is the heart of this automatic power factor controller it find displays and controls the power factor. It can be find by taking tangent of ratio of time between zero crossing of current and voltage waveforms and two successive zero crossing of voltage waveform. Power factor can be explained as ratio of active power to apparent power and it is a key factor in measuring electrical consumption.
Apfc or automatic power factor control panels are mainly used for the improvement of power factor. Its modular design helps in ensuring you have an easy time in maintaining your system. Similarly voltage transformer is used to get current wave form and fed this wave to lm358 comparator. Lm358 is used as a comparator in this circuit.
In order to measure electrical power the relay needs to receive the line voltage and current from a current transformer ct installed close to the metering point if possible. Https bit ly 30qgwfe why we use apfc panel. In above circuit diagram of automatic power factor controller current transformer is used to get current wave form from of load current and current transformer also step down ac current. Automatic power factor control apfc panels.
This gives you more reasons to consider the panels. With a very important tutorial. Everyone knows that how costly electricity has become in present time. To measure reactive power at the power factor relay especially it must be ensured that the vectors of voltage and current are shifted by 90.
To correct power factor first we need to find the current power factor. Free download edraw electrical diagram maker. Refer fig no 3 fig m. In order to improve power factor so that billing.
Https bit ly 3fbu2ff electrical diagram templates. Note that apfc panel can maintain the power factor on l t side of transformer and it is necessary to provide fix compensation for power transformer refer fig no 1 5. I think all of those who have sent messages and mails about the topic will never ask again if they follow these simple methods to calculate the proper size of capacitor bank in kvar and micro farads for power factor correction and improvement in both. I hope you will find it very useful because i have already spent two days to prepare this article.
The 440v apfc panel shall be metal clad indoor type floor mounted in non drawout execution. Circuit diagram of pf relay. Furthermore it has special switching capacitors that help in the minimization of the transients when making any changes to the system.