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The current that flows through these capacitors is due to the capacitors' impedance at power line frequencies. [6] [7] Some amount of leakage current is generally considered acceptable, however excessive leakage current, exceeding 30 mA, can create a hazard for users of the equipment. In some applications, e.g. medical devices with patient ...
Leakage inductance has the useful effect of limiting the current flows in a transformer (and load) without itself dissipating power (excepting the usual non-ideal transformer losses). Transformers are generally designed to have a specific value of leakage inductance such that the leakage reactance created by this inductance is a specific value ...
Leakage current requirements. The maximum allowable patient leakage current is 500μA AC and 50μA DC in normal operation (normal condition, NC) and 1000μA AC or 100μA DC in single failure condition (SFC). [8] Requirements for the input stage. Temperature measurement and requirements.
Voltage withstand testing is done with a high-voltage source and voltage and current meters. A single instrument called a "pressure test set" or "hipot tester" is often used to perform this test. It applies the necessary voltages to a device and monitors leakage current. The current can trip a fault indicator. The tester has output overload ...
The nature of the mercury-sample contacts and the instrumentation connected to the mercury probe define the application. If the mercury-sample contact is ohmic (non-rectifying) then current-voltage instrumentation can be used to measure resistance, leakage currents, or current-voltage characteristics. Resistance can be measured on bulk samples ...
Measures the power factor Distortionmeter: Measures the distortion added to a circuit Electricity meter: Measures the amount of energy dissipated ESR meter: Measures the equivalent series resistance of capacitors Frequency counter: Measures the frequency of the current Leakage tester: Measures leakage across the plates of a capacitor LCR meter ...
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