Bangladesh combines one of the densest rural electrification programmes in Asia with a garment-manufacturing base that owns its own substations, and both run on the same 50 Hz, 230/400 V supply. The engineering problems are humidity, monsoon flooding and very high load density per square metre of factory floor — each of which changes the equipment more than the rating label suggests.
Grid Context and Standards
The grid is operated by BPDB in generation-transmission, by DESCO and DPDC in the Dhaka urban area, and by the PBS network under REB in rural areas, with common distribution voltages of 33 kV and 11 kV. Specifications follow IEC 60076 through the utilities’ own data sheets. Factory substations are usually 11/0.4 kV with the owner responsible for the indoor room and the utility for the metering point.
What We Supply
- Compact substations for garment and textile factories — transformer, MV switchgear and LV board in one tested scope.
- Dry type transformers up to 6000 kVA for indoor rooms in multi-storey factory buildings.
- Oil-immersed distribution transformers for rural electrification and utility feeders.
- Prefabricated substations where the site cannot host a conventional substation building.
Climate: Monsoon Flooding and Humidity
Site level is the first decision: in flood-prone districts the plinth height, cable entry direction and drainage around the enclosure are set with the civil drawing, not after it. Indoors, the humidity argument lands the same way as in Vietnam — cast resin windings for rooms that see condensation, with space heaters in the enclosure as a second line of defence. Ventilation sizing assumes a wet bulb that northern designs never see.
Conformity, Testing and Shipping
Conformity is handled per project: IEC 60076 routine test reports, third-party witness testing if the utility or lender requires it, and documentation packs prepared for the shipment. Standard lead time is 30 days from drawing approval with a two-year warranty, quoted FOB, CFR or CIF.
Frequently Asked Questions
Which transformer suits an RMG factory substation?
Dry type transformers up to 6000 kVA indoors, or a compact substation at the plot boundary — decided by the building layout and the utility metering point.
How is flooding accounted for?
Plinth height, cable entry position and drainage are agreed on the civil arrangement drawing before production, so the enclosure sits above the known flood level.
What is the lead time?
Standard lead time is 30 days from drawing approval, with a two-year warranty.
Start an Enquiry
Send the single-line diagram, the load list and the site conditions, and we will come back with a proposed arrangement, the applicable standard set and a quotation on FOB, CFR or CIF terms. Email info@xsdfftransformer.com, call +8615867897761, or message WhatsApp +852 5416 2620.