With this application is possible to obtain the main parameters of a motor starting from the known values.

- Mainly developed to manage:
- Brush DC motors.
- Asynchronous mono-phase AC motors.
- Asynchronous three-phase AC motors.

It can treat also with other motors not included in the list such as
brushless motors, eventually digiting by hand the efficiency values when they are required.

Excluding the absorption values it can also be useful for other not electric motors for examples the
hydraulic motors, pneumatic motors and also combustion engines.

Torque (Nm)

Current (A)

Output power (kW, CV)

Output power (kW, CV)

Revs (rpm)

1

2

3

4

5

Torque (Nm) **from revs and power.**

To obtain the maximum torque please digit the revs with a maximum load and the rating power.

Usable for any kind of motors, electric or not.

Current (A) **from voltage and power.**

It calculates the absorbed current starting from the supply voltage and the output power.

Selecting the correct type of motor it is applied an average characteristic efficiency for that
kind of motor related to the typed power.

Output power (kW, CV) **from voltage and current.**

It calculates the output power starting from the suppy voltage and the absorbed current.

Selecting the correct type of motor it is applied an average characteristic efficiency for that
kind of motor related to the typed power.

Output power (kW, CV) **from revs and torque.**

It calculates the output power starting from revs and torque.

To obtain the maximum power please type the revs with maximum load and che maximum torque.

Usable for any kind of motor, electric or not.

Revs (rpm) **from frequency and number of poles.**

It calculates the angular velocity (revs) starting from frequency and number of poles.

The real angular velocity may be different according to the kind of slip (slowing down compared to
the syncronous speed), and it depends on the entity of the load.

Usable only with synchronous and asynchronous electric motors.

Supply voltage

V

Absorbed current

A

Output power

Motor type

Power supply

Percentage characteristic efficiency of the motor

(valid values from 40 to 100).

(valid values from 40 to 100).

Motor efficiency

%

Power factor for AC motors

(valid values from 0.5 to 1).

(valid values from 0.5 to 1).

Power factor

cosø

Angular velocity (revs)

rpm

Output torque

Supply frequency

Hz

Number of magnetic poles

n.

Output power

Absorbed current

A

Output torque

Considered efficiency

%

Considered power factor

cosø

**Synchronous** angular velocity

rpm

Angular velocity with 4% skip

rpm

**Efficiency and power factor.**

These values vary depending on manufacturers and they depend also by the power supply
circuit, so it is not possible to decide them precisely at first glance.

All the results which use these values for calculation may be slightly different from
the reality.

**Other measure units.**

Power: Power conversion.

Torque: Moment - torque conversion.

Revs: Angular velocity conversion.

Instructions

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Notices

Applications about motors.

Motor parameters calculation.

From three-phase to mono-phase motor.

Absorption of a fan.

Absorption of a pump.