PT. Bambang Djaja, better known as B&D Transformer, is the leading manufacturer of power, distribution and instrument transformer in Indonesia. Establish in 1985 in Surabaya, Indonesia, the company has continued to excel and equip itself with the latest technology, machineries and highly-qualified professionals in order to serve the growing demands of transformer both Indonesia and globally. In year 2016, PT Bambang Djaja has successfully become the first “purely Indonesian” company to ever manufacture 150kV power transformers. The company plans to continue growing further, with plans to go up to 500kV in the near future.

B&D Transformer is designed to fulfill either SPLN 50-1997; SPLN D3 : 2007; SPLN D3 : 2008; IEC 60076; ANSI C.57 / NEMA also SPLN T3 (to power Transformer in Indonesia). The products are certified by PT. PLN (Persero) Puslitbang (LMK Certificate); PT. PLN (Persero) Purestif (Sertifikat pengawasan utu-SPM). For certain transformer types, certification are done by ASTA (Association of shirt-Circuit Testing Authorities – Australia), and KERI (Korea Electrotechnology Research Institute- Korea).


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