Substations in Bangladesh: cost, rules, installation
An 11/0.4 kV substation takes the utility's high-voltage supply and turns it into the 400/230 V your building or factory uses. We design, supply, install and get it approved.
What a substation includes
HT switchgear
VCB or ring main unit to switch and protect the 11 kV side.
Transformer
Oil-immersed or dry-type, sized to your demand.
LT panel (PCC/MDB)
Main breaker and outgoing feeders to each floor or section.
Power factor correction
PFI or APFC panel to keep power factor up and bills down.
Cables and trays
HT and LT cables sized for current and fault level.
Earthing and safety
Earth pits, rubber mats, barriers, fire extinguisher and signage.
Does your building need its own substation?
Whether your building needs its own substation depends on load; we check it at survey.
Free site surveyIndoor or outdoor
Outdoor
Pole-mounted or plinth-mounted in a fenced yard. Lower civil cost where you have space.
Indoor room
A ventilated ground-floor room, common in Dhaka buildings. Needs fire safety and cable trenches.
Compact substation
HT, transformer and LT in one enclosure. Fast to install on tight sites.
How a substation job runs
- 1Site survey and load list
- 2Single-line diagram and layout drawing
- 3Written fixed quote
- 4Utility application and OCEI approval filing
- 5Civil work, installation and cabling
- 6Testing, inspection and energising
Transformer sizes
- 50 kVA
about 40 kW
Small workshop, poultry or agro unit, a row of shops
Learn more - 100 kVA
about 80 kW
Small factory or workshop, a residential building with lifts and pumps
Learn more - 200 kVA
about 160 kW
Mid-size factory, apartment block, commercial building
Learn more - 250 kVA
about 200 kW
Small to mid-size factory, garments or printing unit
Learn more - 315 kVA
about 252 kW
Growing factory that has outgrown 250 kVA
Learn more - 500 kVA
about 400 kW
Larger factory, hospital, commercial or mixed-use building
Learn more
Frequently asked questions
When does a building need its own substation?
It depends on the building's load. We calculate your demand at the survey and tell you whether you need your own substation.
Indoor or outdoor substation: which is better?
Outdoor is usually cheaper if you have space. Indoor rooms suit city buildings with no spare land, but need ventilation, cable trenches and fire safety. Compact substations save space on tight sites.
How long does a substation take?
It depends on equipment lead time, civil work and approvals. Your written quote includes a dated schedule.