Investigation of magnetic field inside Universiti Teknologi Brunei Campus

Abstract

Universiti Teknologi Brunei (UTB) is an engineering and technical university in Brunei Darussalam. This university receive its electrical power supply from the Berakas Power Management Company (BPMC), a local utility company, through an 11kV/415V transformer. This distribution transformer and its switch room were installed at different location but very close to each other. The goal of this investigation was to measure the low frequency magnetic field radiated from the switch board and electrical appliances located around the administration office. In this case, the magnetic field was measured using EMDEX II meter with the aid of Linda Wheel equipment. The measured magnetic fields near the switchboard, around the induction motors, outside of the switchboard and at the admin office were found to be 96.22mG, 11.91mG, 12.4mG and 8.4mG, respectively. These values of magnetic fields were found to be within the acceptable limit provided by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) standard. In addition, a mathematical model was developed based on the lateral distance with higher determination of coefficient.