You asked: What is the power rating of a DC motor?

Originally Answered: what is the power rating of a 12v dc motor? For knowing power rating you need to have current requirement or torque requirement for the job which motor is being used. Such motors are generally below 1 Ampere current so maximum power rating will be 12 watt.

How do you calculate the power rating of a DC motor?

Calculating Mechanical Power Requirements

For linear motion, power is the product of force multiplied by the distance per unit time. In the case of rotational motion, the analogous calculation for power is the product of torque multiplied by the rotational distance per unit time.

How do you calculate the RPM of a 12v DC motor?

Motor RPM Calculation Examples

  1. (Hz x 60 x 2) / number of poles = no-load RPM.
  2. (60 x 60 x 2) / 4.
  3. 7,200 / 4 = 1,800 RPM.

How much power does a 12v motor use?

If the DC motor is 12 v and has 3 amps, then is 36watts and a 12 volt battery on 75 amps/h will give you 12*75=900watts/36 = 25 hours.

How is rated power calculated?

Calculate power rating in KVA when you know voltage and output resistance. Use the formula: P(KVA) = (V^2/R)/1000 where R is resistance in ohms. For example, if V is 120 volts and R is 50 ohms, P(KVA) = V^2/R/1000 = (14400/50)/1000 = 288/1000 = 0.288 KVA.

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How long can a DC motor run continuously?

You should anticipate, given proper attendance, that the motor can run continuously for the life of its brushes, which should be in the range of six months to a year. Presuming that the motor is too small to have its brushes changed by a trained electrician while running.

How many watts is a 1 hp motor?

One electric horsepower is equal to exactly 746 watts.

How many amps does a 1 hp DC motor draw?


HP 1 Phase Amps 3 Phase Amps
115 volt 230 volt
1/2 9.8 2.2
3/4 13.8 3.2
1 16 4.2

How many amps does a DC motor use?

Full load amps in 120 and 240 volts DC motors

Motor Rating (hp) Current (amps)
120 V 240 V
1 9.5 4.7
1 1/2 13.2 6.6
2 17 8.5

Which battery is best for DC motor?

7.2V: six AA or AAA rechargeable NiMh batteries is perfect for 7.2V DC gear motors. These are usually in a battery pack rather than as individual cells and you will need a more specific NiMh battery pack charger. 7.4V: two LiPo cells can often power a microcontroller and works great for 7.2V DC gear motors.

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