Transformer Turns Ratio Measurement

DESCRIPTION The ETP-1 equipment measures the following: - Actual turn ratio for each position of the tap changer. - No load current and power, at the test voltage. - Automatically calculates results according with the connection group. With these measurements it is possible to detect problems in the tap changer, coils, winding short-circuit, defective contacts, open circuit, etc, and with the turns ratio measurement and problems in with the no load current measurement which are referred to the test voltage of 220V rms. The software enables selection of the tap changer, the number of positions, and how you want to measure.With this selected, the software generates a table with all the measurement made for each position and automatically creates a graphic comparison between the theoretic values and the values measured during the test for each tap position. CHARACTERISTICS - The connection to the transformer taps is guided from the computer to avoid connection errors. - Enables to select the number of the tap changer positions to be measured, as the software informs the position that should be measured each time. - For each tap changer position, a three phase automatic measurement is performed. It is not necessary to change the connection to the transformer taps. - The no load test current waveform is presented on the computer screen. It detects possible problems in the iron core. - The test time for each three phase test position is less than 10 seconds. - The measuring range has a ratio between; 1: 1 to 3000: 1.