wyoelectric
New member
How to convert KVA to MVA? Probably a stupid ?
KVA to MVA
- Thread starter wyoelectric
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tx2step
Senior Member
- Location
- North Texas, DFW area
Re: KVA to MVA
So... a 7,500 KVA transformer = 7.5 MVA transformer, right?
So... a 7,500 KVA transformer = 7.5 MVA transformer, right?
- Location
- Lockport, IL
- Occupation
- Retired Electrical Engineer
Re: KVA to MVA
The "M stands for one million. The "K" stands for one thousand. That's why Basra's formula works.
The "M stands for one million. The "K" stands for one thousand. That's why Basra's formula works.
zog
Senior Member
- Location
- Charlotte, NC
Re: KVA to MVA
It is a small k (kVA)
It is a small k (kVA)
al hildenbrand
Senior Member
- Location
- Minnesota
- Occupation
- Electrical Contractor, Electrical Consultant, Electrical Engineer
Re: KVA to MVA
Zog,
That's the way I learned it, also.
Inside a sentence the "k" of kVA is like any other first letter of a word.
V is short for Volt, a man's last name;
A is also short for a man's last name, Ampere.
Being short for proper names, "V" and "A" are capitalized.
Zog,
That's the way I learned it, also.
Inside a sentence the "k" of kVA is like any other first letter of a word.
V is short for Volt, a man's last name;
A is also short for a man's last name, Ampere.
Being short for proper names, "V" and "A" are capitalized.
- Location
- Lockport, IL
- Occupation
- Retired Electrical Engineer
Re: KVA to MVA
The "V" and "A" do not stand for names, even though the words they represent were chosen to honor two persons. The letters stand for the common words (not proper words, not capitalized) "volt" and "ampere." The authors of many textbooks have chosen to use capitalized letters "V" and "I" to represent the phasor quantities of voltage and current, and the lower case letters "v" and "i" to represent the same quantities as functions of time. The letter "A" (or "a") is not used to represent either current or amperes. It is only used as part of the symbol for apparent power (VA) or the symbol for reactive power (VAR), with or without a preceeding quantifier (e.g., "K" or "M" or "G").
The lower case letter k" is used more frequently to represent "kilo-," but it is not incorrect to use the upper case "K."
His name was Alessandro Volta.
The "V" and "A" do not stand for names, even though the words they represent were chosen to honor two persons. The letters stand for the common words (not proper words, not capitalized) "volt" and "ampere." The authors of many textbooks have chosen to use capitalized letters "V" and "I" to represent the phasor quantities of voltage and current, and the lower case letters "v" and "i" to represent the same quantities as functions of time. The letter "A" (or "a") is not used to represent either current or amperes. It is only used as part of the symbol for apparent power (VA) or the symbol for reactive power (VAR), with or without a preceeding quantifier (e.g., "K" or "M" or "G").
The lower case letter k" is used more frequently to represent "kilo-," but it is not incorrect to use the upper case "K."
al hildenbrand
Senior Member
- Location
- Minnesota
- Occupation
- Electrical Contractor, Electrical Consultant, Electrical Engineer
Re: KVA to MVA
Oops. Thanks, Charlie.
So much for my learning and/or my memory.
Oops. Thanks, Charlie.
So much for my learning and/or my memory.
- Location
- Mission Viejo, CA
- Occupation
- Professional Electrical Engineer
Re: KVA to MVA
The US Nation Institute of Standards and Technology has some very interesting reading about the International System of Units (SI). It does state the ?k? prefix is lowercase. The ?A?(a basic unit) and ?V?(a "specially named" derived unit) are officially uppercase when referenced in a formula. I usually don?t make a big deal about either issue except in technical papers.
One of the most fascinating things to me is that most of the basic SI units (meter, kilogram, second, ampere, kelvin, mole, and candela) have been defined or officially redefined in my lifetime
The US Nation Institute of Standards and Technology has some very interesting reading about the International System of Units (SI). It does state the ?k? prefix is lowercase. The ?A?(a basic unit) and ?V?(a "specially named" derived unit) are officially uppercase when referenced in a formula. I usually don?t make a big deal about either issue except in technical papers.
One of the most fascinating things to me is that most of the basic SI units (meter, kilogram, second, ampere, kelvin, mole, and candela) have been defined or officially redefined in my lifetime
O
oliver100
Guest
Re: KVA to MVA
Yes indeed. And since they keep doing it isn't it time to introduce the [$] for everything else not covered by SI?
- Location
- Bremerton, Washington
Re: KVA to MVA
Its also interesting that while the 2002 NEC went metric, it did not include motors, as the metric desgination for motors is kW. Or perhaps I should say the SI term is kW.
Its also interesting that while the 2002 NEC went metric, it did not include motors, as the metric desgination for motors is kW. Or perhaps I should say the SI term is kW.
zog
Senior Member
- Location
- Charlotte, NC
Re: KVA to MVA
The IEEE dictionary says it is a small "k". "K" is for Kelvin.
The IEEE dictionary says it is a small "k". "K" is for Kelvin.
- Location
- Lockport, IL
- Occupation
- Retired Electrical Engineer
Re: KVA to MVA
Of course it is. One "watt," as expressed in its most basic units, is equal to one "kilogram ? meter (squared) / second (cubed). Those are all SI units. So you see, we've been using metric units for a long time.
- Location
- Bremerton, Washington
Re: KVA to MVA
The US system of weights and measures has been defined in Metric terms for over 100 years.
The US system of weights and measures has been defined in Metric terms for over 100 years.
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