The r.m.s. value of an a.c. supply is equal to the direct current which would dissipate energy at the same rate in a given resistor.

We can use the same logic to define the rms value of the voltage of an alternating voltage supply:

Vrms = the peak voltage divided by the square root of 2 where V is the maximum (or peak) value of the voltage.

The RMS value of an a.c. supply is equal to the direct current which would dissipate energy at the same rate in a given resistor

We can use the same logic to define the RMS value of the voltage of an alternating voltage supply.

Where V is the maximum (or peak) value of the voltage and I is the maximum (or peak) value of the current. So we have a way of calculating the RMS values of both current and voltage from their respective peak values.

For sinusoidal current & voltage…

Pavg = Irms x Vrms

Vrms = Irms x R So we can now express a current and a voltage in terms of a single value (RMS)…and for circuits with resistive loads only all of the rules for mesh analysis and theorems can be used…

Series load analysis

Parallel load analysis

Mesh load analysis

Kirchhoff's Voltage & Current

Linearity Property

Homogeneity property

Additive property

Superposition Theorem

Thevenin’s Theorem

Norton's Theorem

Source Transformation

This blog is part of my “Electrical Technical Information” series! In this series, I will be covering essential topics to help you understand electrical system. Be sure and stay tuned, as I will also, from time to time, be reviewing electrical products, that in my opinion are worthy of paying attention to. This address…https://bit.ly/3UGjBIg will give you access to the supplier of aforementioned products.

It is also the connection to obtain a free, copy of my 24 page “Three Phase Transformer Workbook” which will serve as a quick reference and reminder of technical calculations you may need.

One of those amazing and versatile products is the EcoFlow Delta Pro Ultra.

Which can be modified to suit any homeowners needs, operating virtually silent and when paired with the Ecoflo smart home panel 2 is extremely versatile.

The Eco flow home panel 2 ties any and all of your standby power equipment together and will control them efficiently. It will even control your connection to the utility grid to make sure you're only using the least expensive power, switching to your standby power during those expensive time of use rates.

Before I end this blog, I want to repeat the connection to obtain a free, copy of my 24 page “Three Phase Transformer Workbook” which will serve as a quick reference when working on my courses and quizzes. It is also handy reference and reminder of technical calculations require in your daily job requirements. Also, here is the link to all of my electrical courses, which are located in my Stan store.

Electrical Power Systems Training by PSPT -----(Power Systems Protection Training)-----

Basic Electrical Learning

Conductors and Insulators are investigated along with their connected components, Capacitors, Inductors, and how they are influenced by Electromagnetism.

The abbreviations AC and DC are often used to mean simply alternating and direct, as they are applied to current or voltage.

Advanced Electrical Learning

“A Per-Unit System ” is the expression of system quantities as fractions of a defined base unit quantity. Calculations are simplified because quantities expressed as per unit do not change when they are referred from one side of a transformer to the other.

In these courses, you will learn exactly what Per Unit Analysis is, the main advantages of using it, how manufacturers of equipment use and rate their products, and the technique of converting to and from the Per Unit system.

Several examples of working with Per Unit are demonstrated in this crisp clear presentation. When you finish you will have a though understanding of this subject.

It is important for all power engineers and technicians to be familiar with the concept of Per Unit as it is being used and referred to every day in power flow, short circuit evaluation, and motor starting studies.

An understanding of this method is essential for the understanding of fault analysis and modern-day protection schemes. These courses will provide you with the knowledge to comprehend the concept and how it is applied.

Supplemental Electrical Lessons

Specialized Electrical Lessons

Specialized lessons include the “Protection & Control(P & C)” principles of high voltage stations. HV Bus Differential Protection is studied along with restrictions due to CT saturation & mismatch and its solution, “Restraint Differential Protection”.

Transformer Connections: (Y – Y; Delta – Delta; Y – Delta; Delta – Y & Y – Zag Zig) are examined along with Transformer Clock System Vector Nomenclature.

Lastly, there is a special section dedicated to “Single and Three-Phase Metering “, including old analog and new digital kilowatt-hour meters.

Conclusion

Blog #22 - More on Sinusoidal Current and Voltage

Vrms = the peak voltage divided by the square root of 2 where V is the maximum (or peak) value of the voltage.

The RMS value of an a.c. supply is equal to the direct current which would dissipate energy at the same rate in a given resistor

We can use the same logic to define the RMS value of the voltage of an alternating voltage supply.

Where V is the maximum (or peak) value of the voltage and I is the maximum (or peak) value of the current. So we have a way of calculating the RMS values of both current and voltage from their respective peak values.

For sinusoidal current & voltage…

Pavg = Irms x Vrms

It is also the connection to obtain a free, copy of my 24 page “Three Phase Transformer Workbook” which will serve as a quick reference and reminder of technical calculations you may need.

Which can be modified to suit any homeowners needs, operating virtually silent and when paired with the Ecoflo smart home panel 2 is extremely versatile.

PSPT Electrical Power Systems Training by PSPT Power Systems Protection Training

Get ready for a wealth of information, engaging content, and an enhanced learning experience as we continue to grow and share valuable insights.

Stay connected, stay curious, and explore the possibilities!

Electrical Power Systems Training by PSPT -----(Power Systems Protection Training)-----

Basic Electrical Learning

Conductors and Insulators are investigated along with their connected components, Capacitors, Inductors, and how they are influenced by Electromagnetism.

The abbreviations AC and DC are often used to mean simply alternating and direct, as they are applied to current or voltage.

Advanced Electrical Learning

“A Per-Unit System” is the expression of system quantities as fractions of a defined base unit quantity. Calculations are simplified because quantities expressed as per unit do not change when they are referred from one side of a transformer to the other.

In these courses, you will learn exactly what Per Unit Analysis is, the main advantages of using it, how manufacturers of equipment use and rate their products, and the technique of converting to and from the Per Unit system.

Several examples of working with Per Unit are demonstrated in this crisp clear presentation. When you finish you will have a though understanding of this subject.

It is important for all power engineers and technicians to be familiar with the concept of Per Unit as it is being used and referred to every day in power flow, short circuit evaluation, and motor starting studies.

An understanding of this method is essential for the understanding of fault analysis and modern-day protection schemes. These courses will provide you with the knowledge to comprehend the concept and how it is applied.

Supplemental Electrical Lessons

Specialized Electrical Lessons

Specialized lessons include the “Protection & Control(P & C)” principles of high voltage stations. HV Bus Differential Protection is studied along with restrictions due to CT saturation & mismatch and its solution, “Restraint Differential Protection”.

Transformer Connections: (Y – Y; Delta – Delta; Y – Delta; Delta – Y & Y – Zag Zig) are examined along with Transformer Clock System Vector Nomenclature.

Lastly, there is a special section dedicated to “Single and Three-Phase Metering“, including old analog and new digital kilowatt-hour meters.

Conclusion

Vrms = the peak voltage divided by the square root of 2 where V is the maximum (or peak) value of the voltage.

The RMS value of an a.c. supply is equal to the direct current which would dissipate energy at the same rate in a given resistor

We can use the same logic to define the RMS value of the voltage of an alternating voltage supply.

Where V is the maximum (or peak) value of the voltage and I is the maximum (or peak) value of the current. So we have a way of calculating the RMS values of both current and voltage from their respective peak values.

For sinusoidal current & voltage…

Pavg = Irms x Vrms

It is also the connection to obtain a free, copy of my 24 page “Three Phase Transformer Workbook” which will serve as a quick reference and reminder of technical calculations you may need.

Which can be modified to suit any homeowners needs, operating virtually silent and when paired with the Ecoflo smart home panel 2 is extremely versatile.

PSPT Electrical Power Systems Training by PSPT Power Systems Protection Training

Get ready for a wealth of information, engaging content, and an enhanced learning experience as we continue to grow and share valuable insights.

Stay connected, stay curious, and explore the possibilities!

“A Per-Unit System ” is the expression of system quantities as fractions of a defined base unit quantity. Calculations are simplified because quantities expressed as per unit do not change when they are referred from one side of a transformer to the other.

Lastly, there is a special section dedicated to “Single and Three-Phase Metering “, including old analog and new digital kilowatt-hour meters.