dirct current
The test equipment used to test high voltage cables is a hi-pot test where a high DC voltage is a applied to the cable. This voltage can be from 150% to 200% of the working voltage of the cable.See related links below.
It is the rated test voltage that will not cause insulation breakdown.
Working Voltage is the voltage at which the boot is safe at. Test Proof voltage is what the boot was tested up to before it failed. However you must keep in mind that if you are in wet conditions that can significantly lower the rating of the boot. Also voltage does not kill you it is the amperage.
A good laboratory to test out high voltage experiment should be a government owned laboratory, or one that is government approved.
since we need to get desired or rated voltage, so if it is connected in high voltage side of the transformer, voltage supply will be more, and hence the current will be more than the required amount. this is the reason why the instruments re connected at the low voltage of the transformer while performing no load test.
The test equipment used to test high voltage cables is a hi-pot test where a high DC voltage is a applied to the cable. This voltage can be from 150% to 200% of the working voltage of the cable.See related links below.
Secondary voltage / primary voltage
It is the rated test voltage that will not cause insulation breakdown.
To test voltage with a multimeter, set the dial to the voltage setting, connect the black probe to the ground and the red probe to the point where you want to measure the voltage. Read the display for the voltage measurement.
To test voltage with a multimeter, set the dial to the voltage setting, connect the red probe to the positive terminal and the black probe to the negative terminal of the circuit or component you want to test. Read the voltage displayed on the multimeter screen.
insolation resistance test
A voltmeter
A test done on a transformer. The voltage at the power frequency is ramped up to verify the transformer is capable of handling the stresses due to switching and natural phenomena (lighting strikes).Withstand Voltage:The voltage which has to be applied to a test object under specified conditions in a "withstand test" is called the "withstand voltage".
A multimeter can be used to test voltage accurately by selecting the appropriate voltage range on the device, ensuring the probes are connected to the correct terminals, and reading the voltage measurement displayed on the multimeter's screen.
generally open circuit test is performed on the low voltage side.....not on high voltage side.... becuase on low voltage side, we can apply that low voltage very easily ( i.e with a less amount of source is required)... whereas on high voltage side, we need a large power source in order to apply full voltage... in short circuit test, we will test on high voltage side by keeping Low voltage side being short circuit.because high voltage side needs less current source than low voltage side....
Simply, the voltage which is withstand by the test object as an impulse is called as rated impulse voltage.
Any one using a voltage test instrument can measure charge differential voltage.