Measuring the electrical resistance (ohms) of motors, compressors, and other electrical devices in HVAC systems may seem straightforward. But when the measurements of zero (0) or “OL” (overload) come ...

You can just measure the input voltage and the output voltage and use one of the basic equations to calculate the value of the capacitance or inductance, but a ratio close to 2-to-1 is a good choice.

Another example of loop resistance comes from the ANSI/ESD S4.1-1997: Worksurfaces—Resistance Measurements. For this test, the standard electrode is placed on the tabletop surface.

The circuit in Figure 2 meets these requirements and accurately measures internal resistance over a range of 0.001 to 1Ω at battery voltages as high as 13V. One section of an LTC6943 analog switch, IC ...

Insulation failure is the root cause of many electrical conductors and equipment failures. When insulation fails, not only can equipment be damaged, but fire and shock can also result. Ideally, when ...

OF all electrical measurements probably that of measuring a resistance is the most important, since the resistance of many bodies is a permanent quality, and resistances can be compared by means ...

Three DC electrical tests are among those recommended by the InterNational Electrical Testing Association (NETA): DC overpotential test of the circuit breaker’s insulation systems. Insulation ...

GROUND RESISTANCE MEASUREMENT There are plenty of resources on the internet about ground resistance measurements. For making these measurements, I chose the Fluke 1625 earth resistance meter, seen in ...

Measurement of short-circuit impedances For the short-circuit impedance test the primary winding will be short-circuited. At the secondary winding an AC current signal is injected and the resulting ...

The current is now only limited by the winding resistance on the high-voltage side and the impedance of the connected transmission line. Influence of residual magnetism on electrical routine and ...