About Us
The idea of establishing the High Current Laboratory was determined by the Electrical and Electronics Department in 1985, taking into consideration the high current (Low Voltage, LV) test requirements of the electro-mechanical industry in our country and the first plans were made with the CESI Laboratories in Italy.
The design studies were completed in 1986. The short circuit transformer, short-circuit switch, measuring shunts, measuring devices, medium voltage resistors and reactors constituting the core of the laboratory were obtained with a loan of approximately $ 1.2 million from the Islamic Development Bank in the 90s. Due to budget constraints, difficulty in energy supply and increasing costs, the other shortcomings of the laboratory could not be remedied and started to operate.The total installation cost was approximately $ 2 million. The laboratory was completed at the beginning of 2010 with the contributions of Boğaziçi University Rectorate and its Foundation and the Association of Electrical Panel Manufacturers (EPAD) with the contributions of the related companies. We would like to point out that the laboratory is the only independent laboratory capable of testing for 100kA-1sec in our country, although it is delayed for such a long period of operation.
In May 2010; AG thermal magnetic switch, distribution board, power transformer, busbar, medium voltage thrower, AG insurance, materials such as short circuit resistance tests were carried out with the help of experts from CESI. From now on, various short circuit tests and all the work of the manufacturer's products have been carried out by the laboratory team.
High current test laboratories take their energy directly from Etiler main download center via a line independent of the city network. In this way, by providing a relatively distinction from the lines of individual users; In both experiments and in the event of a potential failure or overcurrent tripped trenches, only the laboratory was de-energized and the other users were not negatively affected.
The short-circuit current to the tested product is given via a three-phase short-circuit switch (making swich) with hydraulic contact, special contact structure. Short circuit switch is a special design which can work very fast with parallel contact structure. Switching elements on / off, on-time and synchronization are set via the synchronization device and its own software. The short-circuit current is measured on the shunt resistors connected at the low voltage side of the transformer. Measurements and measurement records are recorded with a special waveform analyzer with very high sampling rates.
In laboratories, short-circuit current TAMINI brand 140MVA max. special design that can reach power is provided from a transformer. Short circuit current; It is adjusted to the desired levels with medium-voltage resistors and reactors connected to the primary side of the transformer between 12-100kA, with high-voltage resistors and reactors connected to the secondary side of the transformer for values below 12kA.
