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HT -CT/PT Division

C.T.Testing Unit

  Microprocessor controlled
  Self zero check and calibration check
  Digital display of %input, ratio error and phase error
  Manual and auto ranging modes
  Test 5A and 1A CT with either 1A or 5A reference CT
  RS 232C port and parallel port for printing
  Built in real time clock
  Parameter entry through keyboard


H.V. TESTER from 2.5 to 200 KV


Every electrical apparatus or machine Is provided with insulation between live part and earth or between two different sections of live parts. This insulation is required to be tested at high voltage values recommended by applicable relevant standards.
The standard Specification for various electrical apparatus specifies Power Frequency Voltage withstand test at different levels depending upon working voltage of electrical apparatus. It is observed from the various standards for electrical equipments that the minimum power frequency voltage withstand test level for electrical insulation is 2kV for one minute.
We have, therefore, standardized on manufacture of'AE' High Voltage Breakdown Testers with rated voltage of 5kV.

High Voltage Tests Sets of higher voltage upto 600kV are also manufactured against specific requirement. The standard voltages are 10kV, 15kV, 20kV, 25kV, 30kV, 50kV,100kV, 150kV, 200kV & 300kV. The test sets uplo 30kV are manufactured in Air Cooled design while the sets of 50kV & above are manufactured in Oil Cooled design. The output of these high voltage testers is single phase 50/60Hz. The standard H.T. current rating of air-cooled design as also of oil cooled design upto 150kV is 100mA for 30 minutes. For voltages ranges above 'AE' make 5kV A.C. (with 2.5kV tap) High Voltage Breakdown Tester is portable, sturdy & plug in to start type construction & requires minium table space. It broadly consists of 3 main sections.

1) High Voltage Transformer
2) Variable Voltage Source
3) Control Circuit



It compares & reads the error due to imbalance in signals of test P.T. with reference P.T. and applies necessary proportional signal to nullify the error. Input is displayed in percentage or actual value, and phase error in centiradians or minutes.
On separate key commands the error readings with date, time,% input & burden are sent either to a PC through RS232C port or to a printer connected to parallel port, in order to have report in "view format". The data read from RS232C port can be arranged by using any standard text editor, and a printout can be taken.

  •     Micro processor controlled
  Self zero check and calibration check
  Digital display of %input, ratio error and phase error.
  Programmable voltage input
  Manual and auto ranging modes
  RS 232C port and parallel port for printing
  Built in real time clock
 •   Parameter entry through keyboard


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