0
VA Rating stands for Volt-Ampere Rating, It is the basic unit of Alternator or Transformer.
This is so because in AC System Power(P) is the product of Voltage(V),Current(I)and Power Factor.
Power(P) = Voltage(V) * Current(C) * Power Factor
But power factor of the load is never constant and depends on the type of load. So to resolve this problem power ratings of the above mentioned machine is always rated in VA or KVA and its the product of voltage and current.
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What is the VA rating for common appliances?
For all intents and purposed the VA rating is the same as the wattage rating of appliances. VA is an electrical classification for Volt Amps. The formula for watts is, Watts = Amps x Volts.
Transformer rating is expressed in?
VA or KVA or MVA
A transformer is rated at 12V-0-12V and 250mA so what does the 250mA mean and how do you calculate the fuse for the primary winding without knowing the VA rating?
A: The VA rating is there 6v/a the power fuse to blow is 6watts. 050a fuse
Why does a transformer rated in KVA or VA?
Because the manufacturer has no way of knowing the power factor of load it will be supplying. So its rating is always the product of its rated voltage and its rated current, which is in volt amperes.
Will transformer heating the same for resisitve inductive and capacitive loads of same va rating?
Yes, transformer losses will be the same for any linear load with the same VA. However, if the load is nonlinear, such as a rectifier, the load waveform will be distorted and the losses will be higher than with an undistorted sinusoidal load current of the same VA
What is the VA rating for common appliances?
For all intents and purposed the VA rating is the same as the wattage rating of appliances. VA is an electrical classification for Volt Amps. The formula for watts is, Watts = Amps x Volts.
Transformer rating is expressed in?
VA or KVA or MVA
Rating of transformer?
It's the apparent power (VA) it can deal with.
What is the rating in KVA for a desktop computer?
If a device doesn't give its power rating in kVA (or VA), then it can be calculated pretty easily: (volt-amperes) VA = V (voltage) x A (maximum amperage) (kilovolt-amperes) kVA = VA (volt-amperes) / 1000
Are there people in the National Guard with disabilities?
You would have to have a VA rating of 30% or less.
What is the difference between va and watt rating of an electrical appliance?
Depends on the appliance, and in most cases, it does not matter. For a purely resistive appliance, such as a kettle, or a toaster, the two should be the same. Certain devices such as computers and other electronics will consume reactive power, which is measured by the VA rating. The Watt rating measures only real power. In residential settings, you will not be billed for reactive power, and so you do not need to worry about the VA rating. However, the VA rating is the "true" power required by the device, so if you are planning to hook it up to a generator or UPS, you will need to be able to provide at least that much power.
A transformer is rated at 12V-0-12V and 250mA so what does the 250mA mean and how do you calculate the fuse for the primary winding without knowing the VA rating?
A: The VA rating is there 6v/a the power fuse to blow is 6watts. 050a fuse
Why transformer rating on kva?
ratings are done considering the equip. As a load and in transfrmr losses copper and core depend on v and i hence rating in va
Where do you find your VA entitlement amount on my DD214?
Take your DD214 to the VA for computation and filing for benefits. It depends on length of service , type of discharge , and any disability rating .
What is the proper way to get VA to increase a disability rating?
dont apply on jobs you know youre not qualified to do
Tricare for 100 percent disabled veterans?
how does tricare for life and medicare and 100% rating from the va work
Is the VA prohibited from using your money when calculating your disability rating?
Your disability rating has nothing to do with your financial status. It is determined independently of other factors and is based only on your health and condition.
