H. V. Tester

Variable Voltage Source:

• Variable Voltage supply is provided through a VARIVOLT (Variable auto-transformer) having a suitable rating corresponding to the rating of H.V. Transformer.
• Dimmerstat Is rated for 230Volts A.C. input & 0-270V output. Limit switch at zero position end of Dimmerstat winding is provided to facilitate the H.T. winding to

• Manual operated control transformer (Variable auto-transformer) with zero interlock facility.
• 72mm sq. double range (0-2kV / 0-5kV) moving coil rectifier type voltmeter of class 1.5, provided to read NO LOAD H.T. Voltage.
• 72mm sq. double range (0-100mA) moving coil rectifier type A.C. Mill ammeter of class 1.5, provided in the earth end of the H.T. winding to read H.T. Current.
• Automatic tripping circuit is provided for isolation of supply, in the event of failure of the object under test. Rotary switch with four different settings of 5,10, 50 & 100mA is provided on front panel with LED indication
• M.C.B. for short circuit protection of H.T. transformer & auto transformer
• H.T. ON push button, Mains ON & H.T ON LED indication.
• Range selection switch to select 2.5kV or 5kV range with LED indication.