Common use of AC Voltage Test Clause in Contracts

AC Voltage Test. All completed cables shall be subjected to a voltage of 3.5 kV R.M.S applied between conductors and between conductors and earth. The voltage shall be increased gradually and shall be maintained at the full value for 5 minutes without break- down of the insulation. The frequency of test voltage shall be in range of 40- 62 Hz. Its waveform shall approximate to a sine curve and have both half cycles reasonably alike.