Audible Noise FromAmorphous Metal and Silicon Steel-Based Transformer Core

Abstract

 Power transformers are the main components in the electric power system that function as voltage converters in the distribution of electrical energy. With complaints from the public about noise in amorphous transformers that cause fear in the community. The reliability of distribution transformers is significantly improved with a well-written test plan, which must include specifications for
transformer testing. On newly manufactured distribution transformers, testing is carried out to determine whether the reliability of the distribution transformer meets reliability standards. The test carried out is a core noise test to determine the noise in amorphous transformers. Testing is carried out at the factory with 2 methods, namely no load test and load loss test. For field measurements using the load loss test method. Testing carried out at the factory and field measurements obtained high noise in amorphous type transformers. This study is to determine the noise that occurs in amorphous transformers whether the noise is still safe for the environment and the community.