How to Use an Analog Multimeter to Detect Leakage

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# Resistance Measurement Method with Power Off
1. **Preliminary Preparation**: Place the analog multimeter in a horizontal position and perform mechanical zero adjustment to ensure that the pointer accurately points to the zero scale when not measuring. Meanwhile, check whether the battery power is sufficient and select an appropriate resistance range. Generally, you can first choose the R×10k range. If the resistance value is small, gradually reduce the range.
2. **Connect the Test Leads**: Connect the red test lead to one end of the circuit or device under test, and connect the black test lead to the other end. For example, if you suspect that an electrical appliance has a leakage problem, you can connect the red test lead to the live wire or neutral wire interface of the appliance, and connect the black test lead to the metal casing of the appliance.
3. **Measurement and Judgment**: Observe the deflection of the pointer. If the pointer deflects to infinity or the maximum resistance value, it indicates that there is no leakage phenomenon in the circuit; if the pointer deflects, it indicates that there is a leakage situation in the circuit. The larger the deflection angle of the pointer is, the more serious the leakage is. If you need to roughly judge the leakage resistance value, you can read it according to the deflection angle of the pointer, the selected range, and in combination with the ohm scale of the multimeter.

### Voltage Measurement Method with Power On
1. **Preliminary Preparation**: Ensure that the analog multimeter functions properly, that the pointer can swing freely, and that the pointer can accurately point to the zero scale when in the voltage range. According to the voltage level of the circuit under test, select an appropriate alternating current voltage range, such as the 250V or 500V range.
2. **Connect the Test Leads**: Touch the red test lead to the part of the device under test that may have a leakage, such as the metal casing of an electrical appliance or the outer sheath of an electric wire. Connect the black test lead to the ground wire, such as a well-grounded metal water pipe or the grounding electrode of a building.
3. **Measurement and Judgment**: Observe the deflection of the pointer. If the pointer has an obvious deflection and indicates a certain voltage value, it means that the device under test has a leakage phenomenon. Moreover, the higher the voltage value is, the more serious the leakage is. Generally, when the pointer indicates a voltage higher than 50V, it can be considered that there is a suspicion of leakage; if the voltage is lower than 30V, it is normal.#transformers #transformer #electrical #technology #factory #foryou #viral #shortvideo #manufacture #machine #power #shorts #trending #wiring #factorywork #electricalengineering #powertransformer #electriacaltransformer #manufacturing #process #manufacturer #manufacturingprocess #HighVoltageWinding #usa #canada #australia #uk#dailyvlog #daily #bluecollar #Tesla#WorkshopDaily #electricwire #powerengineering #transformer #foilwinding #lowvoltagenation #electricalengineering #LowVoltageFoilWinding #FoilWinding #ElectricalEngineering #TransformerDesign #InductorDesign#TransformerTechnology #ElectricalEngineering #FoilWinding #TransformerManufacturing #EnergyEfficiency #ElectricalDesign #TransformerWinding #EngineeringInnovation #TransformerTechnology #CopperFoilWinding #PowerTransformers #EngineeringTechniques #ElectricalComponents