The power block with a multimeter for resistance measurement, measure different resistor values for selected Electric energy meter multiplier block. For Analog Multimeter, because power block shows the number of non-linear, the greater the resistance, showing the number of the more dense, so select the appropriate power transformers bigger hands deflection angle, indicating at 1/3 to 2/3 full scale readings more accurate. If the measured resistance value exceeds the error range resistors, resistance is infinite, the resistance or the resistance instability of 0, indicating that the resistor is broken.
Take note that in the measurement Circuit breaker hands do not come into contact two pins, it would hand the resistance presented in parallel with the measured resistance, impact measurement accuracy. In addition, the case can not be charged with a multimeter power block detection circuit resistor values. Online testing should first off, and then disconnect it from the circuit resistance, then measure.
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