Pengaruh Tekanan Mekanis pada Inti terhadap Vibrasi dan Noise dari Transformator Daya Satu Fasa

Abstract

Transformers will produce vibration and noise during operation due to magnetostriction that occurs in the transformer core. This research will provide information about the effect of applying mechanical pressure to the transformer core in relation to the vibrations and noise produced by varying the level of mechanical pressure applied and the test is carried out in an unloaded transformer state. The vibration measurements used Arduino Uno and ADXL 345 Accelerometer sensors and then analyzed using Fast Fourier Transform in the MATLAB Vibration Data Toolbox enDAQ application to read the resulting vibrations and transformer noise measurements using a KMOON GM1352 type Sound Level Meter. There are 5 different mechanical pressure values that will be tested on the transformer, namely 0 N/m2, 2 N/m2, 3 N/m2, 4 N/m2 and 5 N/m2. The conclusion obtained is that the vibration of the transformer core decreases as the mechanical pressure value of the transformer core increases. It is especially significant at higher mechanical pressure values. For a Tesla value of 1.5, the core amplitude magnitude values at each mechanical pressure of 0 N/m2, 2 N/m2, 3 N/m2, 4 N/m2 and 5 N/m2 are respectively: 0.01127 m/s2, 0.01189 m/s2, 0.0036 m/s2, 0.002598 m/s2 and 0.002376 m/s2. This is in line with the resulting noise value, the greater the mechanical pressure applied, the smaller the noise produced by the transformer. Noise data in order, namely: 64.3 dB, 61.0 dB, 59.4 dB, 56.1 dB and 54.8 dB. The peak value of amplitude magnitude is measured as an indicator of the magnitude of transformer vibration. Therefore, a smaller decrease indicates a more effective vibration reduction effect with increased mechanical stress on the transformer core.