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How much dc voltage to be applied for test equivalent to 5 kv ac?
Wiki User
∙ 9y ago
5 kV ac means 5 kV rms, which represents a peak voltage of 5 x sqrt (2) kV, or 7.07 kV. So the dc test should provide 7070 volts.
Wiki User
∙ 9y ago
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How do you test the 11KV HT cables?
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.
Why generally the voltage is applied to HV side?
Lower voltages are required if connected to the low voltage side. The testing facility may not have a gen set large enough to test from the high voltage side.
What will happen to the transformer if double the rated voltage is applied to the winding during the open circuit test?
no voltage will be induced on the secondary side of the motor as the windings will become saturated.
Why do you neglect iron loss in transformer during short circuit test?
in short circuit test we apply rated current with the LV side shorted.so the applied voltage will be very low. iron loss depends on the applied voltage.so it is neglected
How much voltage can apply for the hi-pot test?
2500 volts
Why is a high dc voltage applied to a transformer for testing?
A high dc voltage would be applied to test the insulation between the windings.
What type of voltage applied during megger test?
DC
How do you test the 11KV HT cables?
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.
Why generally the voltage is applied to HV side?
Lower voltages are required if connected to the low voltage side. The testing facility may not have a gen set large enough to test from the high voltage side.
What is power frequency withstand voltage test?
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".
What will happen to the transformer if the rated voltage is applied to the winding during short circuit test?
the winding would burn....
What will happen to the transformer if double the rated voltage is applied to the winding during the open circuit test?
no voltage will be induced on the secondary side of the motor as the windings will become saturated.
Why do you neglect iron loss in transformer during short circuit test?
in short circuit test we apply rated current with the LV side shorted.so the applied voltage will be very low. iron loss depends on the applied voltage.so it is neglected
How much voltage can apply for the hi-pot test?
2500 volts
How do you test 220 volts using a volt meter?
Make sure that the test meter is on the correct voltage scale. Place one lead on one of the conductors to be tested and the other lead on the other voltage source conductor. The reading you obtain will be the voltage potential between the two conductors.
How the breakover voltage is fixed for silicon controlled switch?
A: It is not fixed to any voltage. The manufacture test them as a sample on a lot and to have a specific breakdown it must not conduct within certain voltage applied. If it fail the testing the whole lot is rejected by default
Why is an open circuit test performed on the low voltage side of a single phase transformer?
You always need to apply rated voltage to the primary in open circuit test (oc test helps to find iron loss which depends on the voltage applied which remains constant)so with smaller voltage applied to the low voltage side rated voltage can be achieved in primary.Further,the ammeter ,voltmeter and wattmeter connected to the primary can be of lower rating.
