Can I use a capacitor to save for my electricity bill? If yes, which capacitor does save more ? No, you cannot use capacitor to save for electricity bill ! Why ? For this we need to know about power in alternating current Circuit. ! The answer is going to be long ! There are 3 types of power in alternating current : Active power : The active power is the real power, and it is measured in killowatts.(PRODUCT OF VOLTAGE•CURRENT•COSΦ cos Φ being the angle between voltage amd current). Reactive power : The power which flows back and forth that means it moves in both the directions in the circuit or reacts upon itself, is called Reactive Power.reactive power does not do any real work and thus sometimes called as imaginary power. Measure in kVAR.(PRODUCT Of VOLTAGE•CURRENT•SINΦ.) APPERENT Power : the vector combination of above 2 power is called apperent power ! Measure in KVA.(product of just voltage and current) Now What does capacitor do ? It stores electrical energy in form of electric field which can supply current when there is change in voltage which keeps it constant ! For ac current it reacts in ac power in which current leads voltage by 90° (ideal capacitor) What does inductor do ? It stores electrical energy in form of magnetic field around it. It reacts in ac power i.e voltage lead current by 90° (ideal inductor) Since almost all ELECTRICAL device are inductive in nature ( microwave oven, induction motor fan, pump motor) this gadgets consume reactive power along with real power which increses current In wire (real power current + reactive power current) and also reduce power factor(pf) In real power the cos fi is also indicates nature of load.for example pf=1 means there is no reactive load.(only resistive)Below 1 to 0 is inductive load. And above 1 there is capacitive load. The more the pf is toward unity the better the power factor(less current) Since electricity board charges only for active power the capacitor cannot generate or consume real power(exception are there). Thus using capacitors is useless for domestic consumer as well as commercial consumer. But wait, Since industries use inductive load it also uses huge amount of reactive power.. Which causes huge amount of i^2r losses in wire resulting in more capacity grid and expenses for electricity board.thus electricity board not only measures active power but also reactive power.Reactive power can be compensated by introducing capacitor not one but many (usually bank which operates as per power factor being bad). This capacitor bank helps in increasing pf. The electricity board penalize the industry for there pf being bad thus capacitor bank helps them maintain good Pf which not only save them from penalty but also get token of appreciation(usually a very little discount )from electricity board for maintaining good power factor. Bottom line : capacitor does not save electricity neither electricity bill. Sorry for long answer. If you like the answer don't forget to upvote ! Thanks for reading !
Why not?, I am sure we may save energy when using a capacitor, but a little bit or in very small amount. Reducing Z (impedance) this lead to less heat dissipation. so we only get benefit from this factor. The goal of capacitor is not to reduce the wattage, only the R.I^2 factor (in small amount) to reduce the heat loss energy. Changing the dephasing to optimum lead to let the max. amp at max. voltage. The phi is zero and yield to maximum power. (Actually I don't know if I understand the last guy (2:10 mn) very well at the end of the video, the English is not my native language, so to lesson perfectly slightly difficult, when reading is perfect).
some utilities and rate classes have penalties but not many in today's world where kVAR is free from solar. PUC should not allow these penalties for EDCs which do not have UL1741SA settings prescribed to customer-generators in their territory.
It's a lie. Sure it does reduce reactive load from induction sources, but reactive load from induction sources doesn't change the wattage used, it changes the voltage and amperage loads, but the wattage remains the same. As far as I am aware, every power company in the world bills based on kilowatt hours, not VA (volt amps). So there is no actual cost savings for doing this. Here is a demonstration from Eaton debunking this myth. ua-cam.com/video/tVeu_Ns3VQA/v-deo.htmlsi=JV0pYXGEzp87fOak
If this were installed before meter would it work? That belongs to the power company
Can I use a capacitor to save for my electricity bill? If yes, which capacitor does save more ?
No, you cannot use capacitor to save for electricity bill ! Why ?
For this we need to know about power in alternating current Circuit. !
The answer is going to be long !
There are 3 types of power in alternating current :
Active power : The active power is the real power, and it is measured in killowatts.(PRODUCT OF VOLTAGE•CURRENT•COSΦ cos Φ being the angle between voltage amd current).
Reactive power : The power which flows back and forth that means it moves in both the directions in the circuit or reacts upon itself, is called Reactive Power.reactive power does not do any real work and thus sometimes called as imaginary power. Measure in kVAR.(PRODUCT Of VOLTAGE•CURRENT•SINΦ.)
APPERENT Power : the vector combination of above 2 power is called apperent power ! Measure in KVA.(product of just voltage and current)
Now
What does capacitor do ?
It stores electrical energy in form of electric field which can supply current when there is change in voltage which keeps it constant ! For ac current it reacts in ac power in which current leads voltage by 90° (ideal capacitor)
What does inductor do ?
It stores electrical energy in form of magnetic field around it. It reacts in ac power i.e voltage lead current by 90° (ideal inductor)
Since almost all ELECTRICAL device are inductive in nature ( microwave oven, induction motor fan, pump motor) this gadgets consume reactive power along with real power which increses current In wire (real power current + reactive power current) and also reduce power factor(pf)
In real power the cos fi is also indicates nature of load.for example pf=1 means there is no reactive load.(only resistive)Below 1 to 0 is inductive load. And above 1 there is capacitive load. The more the pf is toward unity the better the power factor(less current)
Since electricity board charges only for active power the capacitor cannot generate or consume real power(exception are there). Thus using capacitors is useless for domestic consumer as well as commercial consumer.
But wait, Since industries use inductive load it also uses huge amount of reactive power.. Which causes huge amount of i^2r losses in wire resulting in more capacity grid and expenses for electricity board.thus electricity board not only measures active power but also reactive power.Reactive power can be compensated by introducing capacitor not one but many (usually bank which operates as per power factor being bad). This capacitor bank helps in increasing pf.
The electricity board penalize the industry for there pf being bad thus capacitor bank helps them maintain good Pf which not only save them from penalty but also get token of appreciation(usually a very little discount )from electricity board for maintaining good power factor.
Bottom line : capacitor does not save electricity neither electricity bill.
Sorry for long answer.
If you like the answer don't forget to upvote !
Thanks for reading !
Why not?, I am sure we may save energy when using a capacitor, but a little bit or in very small amount. Reducing Z (impedance) this lead to less heat dissipation. so we only get benefit from this factor. The goal of capacitor is not to reduce the wattage, only the R.I^2 factor (in small amount) to reduce the heat loss energy.
Changing the dephasing to optimum lead to let the max. amp at max. voltage. The phi is zero and yield to maximum power.
(Actually I don't know if I understand the last guy (2:10 mn) very well at the end of the video, the English is not my native language, so to lesson perfectly slightly difficult, when reading is perfect).
It show 50% less current but the watts reading the same, so meaning still not saving electric bills? Tq
Pls open inside. Capacitor power?
some utilities and rate classes have penalties but not many in today's world where kVAR is free from solar. PUC should not allow these penalties for EDCs which do not have UL1741SA settings prescribed to customer-generators in their territory.
Easy: Apparent vs Real power.
Why would the governments NOT mandate this if it is so “good”!!??
It's a lie. Sure it does reduce reactive load from induction sources, but reactive load from induction sources doesn't change the wattage used, it changes the voltage and amperage loads, but the wattage remains the same.
As far as I am aware, every power company in the world bills based on kilowatt hours, not VA (volt amps). So there is no actual cost savings for doing this.
Here is a demonstration from Eaton debunking this myth.
ua-cam.com/video/tVeu_Ns3VQA/v-deo.htmlsi=JV0pYXGEzp87fOak