We are PT. Bambang Djaja, manufacturer of oil filled distribution transformer with B&D brand. Our factory is based on Surabaya - Indonesia, with office both in Surabaya and Jakarta. We have more than 20 years experience in design, manufacture and servicing of transformer.

We manufacture oil filled transformer from 5 kVA up to 15,000 kVA, with voltage rating up to 36 kV. Our design follows IEC-76, ANSI, JIS, BS, or any other standard as required by our customers. We are ISO 9001:2000 certified for design, manufacture and
servicing of distribution transformer.

We also design and manufacture other customized transformer such as furnace transformer, rectifier transformer, VSD (Variable Speed Drive) transformer and Phase Shifting transformer. Our in house design team is equipped with the latest in transformer
design software, and Our manufacture technology is supported by state of the art core cutting machine, automatic winding machine, and vacuum oven oil filling apparatus. Our product is used in the utility, mining, oil & gas, high rise commercial building, both
domestic and internationally.