Distribution transformers in Bangladesh

Rating

Size the kVA from the total connected load, the diversity factor and future expansion; typical factory sizes are 250–2500 kVA.

Voltage

11 kV primary to 0.4 kV (415 V) secondary is standard in Bangladesh; 33 kV primaries for larger sites.

Type

Oil-immersed ONAN for outdoor sub-stations (lower cost, high overload capacity); cast resin dry-type for indoor and fire-sensitive locations.

Losses

Compare no-load and load losses: a low-loss transformer costs more but saves energy over its 25+ year life.

Tests and standards

IEC 60076 / BDS IEC; routine test reports, and type tests or BPDB/DESCO/DPDC approval where the utility requires it.

Transformer prices depend on rating, oil or dry type, winding material (copper or aluminium), losses and brand, and copper price changes. Send the kVA, voltage ratio, type and quantity and we quote within 24 hours.

Oil-immersed transformers are cheaper and suit outdoor sub-stations; dry-type cast resin transformers need no oil, so they are preferred indoors and in buildings where fire safety matters.

Yes: HT switchgear, transformer, LT panel and power-factor improvement plant can be supplied together. Brands we list: ABB, Siemens, Energypac, ETL, Transtec, Hyundai, Schneider and Trafo.