## Motor Energy Consuption Formula

## Motor Energy Consuption Formula

(OP)

Hello to everyone,

this post came from another post but i want to threat in different because different object.

The question is EASY

I have VOLTAGE, CURRENT and V/I ANGLE

I want to calculate the real energy consumption in a year.

What formula i need? please give me a description of every parameters on the formula

this post came from another post but i want to threat in different because different object.

The question is EASY

I have VOLTAGE, CURRENT and V/I ANGLE

I want to calculate the real energy consumption in a year.

What formula i need? please give me a description of every parameters on the formula

## RE: Motor Energy Consuption Formula

How low PF impact in energy consuption? Low power on motor lower PF so, it is equal consumption of other motor with same KW but with high PF?

Regards

## RE: Motor Energy Consuption Formula

Watts times 8760 Hours (24 hours x 365 Days) = Kilo-Watt Hours consumption in a year.

That's the easy answer.

OR for three phase:

Volts times Amps times the cosine of the phase angle times 1.73 (square root of 3) divided by 1000 = Kilo-Watts.

Bill

--------------------

"Why not the best?"

Jimmy Carter

## RE: Motor Energy Consuption Formula

Bill

--------------------

"Why not the best?"

Jimmy Carter

## RE: Motor Energy Consuption Formula

WORST CASE GROSS ESTIMATEof consumption, i.e. the motor would be running fully loaded at all times, then that's all you can get with this information.The ACTUAL consumption is always going to be based on the

, which is always deemed to be LESS than the full load capability of the motor. So the only way to know theconnected loadACTUAL consumed poweris to MEASURE it when the load is connected." We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden

## RE: Motor Energy Consuption Formula

Motor energy consumption = What the motor actually delivered on hourly/weekly/monthly/yearly basis

Muthu

www.edison.co.in

## RE: Motor Energy Consuption Formula

nameplate data of motors is 88A and 0,82cosphi

some motor load is 82A with 0,8 cosphi>>>no problem

one motor load is 60A with 0,6 cosphi>>>no process problem

because all of this motor are FAN and probably the 60A load could be due to incorrect pitch angle of the blades,

Suppose the reduced capacity flow have no impact for the process

my dubt is...

How can 60A cosphi 0,6 can impact on total consuption? is better to run the motor in this condition (so low current absorption but hig cosphi) or could be better to rise load to motor in order to correct LOW PF but increasing current absorption?

## RE: Motor Energy Consuption Formula

Muthu

www.edison.co.in

## RE: Motor Energy Consuption Formula

Power Factor is the ratio between apparent power and real power.

Increasing the load will increase the apparent power, the real power and to a lessor extent increase the KVARs.

Overall the ratio will increase.

But this is a wasteful way to improve the power factor.

When driving on the highway, you can slow down for a reduced speed zone by riding the brakes without taking you foot off of the throttle

It works but it wastes fuel and brake linings.

Are you being charged a penalty for low PF?

If you are not paying a PF penalty, you have no problem.

Move on to something else.

If you are being charged a penalty, then add some PF correction capacitors to the motor.

The payback time for PF correction is often less than one year.

Bill

--------------------

"Why not the best?"

Jimmy Carter