![motor winding resistance motor winding resistance](https://alltestpro.com/wp-content/uploads/2020/10/small-megger-graph-291x300.jpg)
Skip this step if you do not have a temperature gun.
#MOTOR WINDING RESISTANCE SERIES#
Lastly, place the 4 cell LiPo in series with the rest of the circuit.Turn the multi-meter on and set it to read millivolts. Turn on the ammeter and set it to the 10A setting.Take the second multi-meter and measure t he voltage across the motor leads.Wire 2 out of the 3 wires on the brushless motor in series with the power resistor and multi-meter.Wire the multi-meter in series with the power resistor.Temperature gun (optional but highly recommended).Wire to connect battery to resistor and motor leads.25 Watt – 10 ohm Resistor for a 3 or 4 Cell LiPo.4 Cell LiPo (Max 15.10v), 3 Cell LiPo or a 2 Cell LiPo.One will be used to measure current and the other is used to measure voltage. However, if we know the temperature of the winding at the time the reading was taken, we can normalize this result to a standard 20 degrees Celsius. This heat increases the resistance property of the windings.
![motor winding resistance motor winding resistance](https://electriciantraining.tpub.com/14177/img/14177_97_1.jpg)
When placing a current on a motor phase we waste electricity to the form of heat. Where it becomes challenging is where we introduce an increase in temperature to the circuit. Ground Testing Cable Applications Motor Testing Gas Analyzing. We then use ohms law, V = I x R to determine the resistance value as we will know the voltage across the motor and the current will be the same in the entire circuit. In this case we add an additional load in to the circuit to reduce the current to an acceptable level. The reason we would to do this is common multi-meters do not have the sensitivity to measure milliohms.
![motor winding resistance motor winding resistance](https://www.hioki.com/e/lp/motor_application/common/img/products/page_13/13-02_2.png)
We can measure the resistance of the motor winding by introducing another resistance component to a circuit. Measuring Brushless Motor Winding Resistance However, we can determine the motor using inexpensive household tools. The wasted energy is converted to heat and this energy does not provide any form of work that contributes to our power output of the brushless motor in our RC vehicles. For a given value of variable resistance, the speed reduction is not constant but varies with the motor load. When power flowing through the wires are resisted due to the wire itself, it provides wasted energy. Armature resistance control is restricted to keep the speed below the normal speed of the motor and increase in the speed above normal level is not possible by this method. Every wire used in any application has a specific resistance per foot. Ohms are the unit of measurement for resistance in electricity. Well, it is the same for wires and it is ideal for a motors resistance to be zero ohms. Unfortunately nothing in life provides 100% efficiency.