A substation isn't finished when it's installed. It's finished when the utility energises it.
Plenty of contractors can put a transformer on a plinth. The delay that costs you money comes later — when the drawings don’t match what the utility approves, the test reports aren’t in the format they accept, and a completed substation sits idle for weeks while your factory waits to commission.
We supply, install and maintain substations and industrial electrical systems, and we carry the job through to the point that actually matters: approved, tested, energised and running.
What we supply and install
Eight scopes covering everything from the incoming HT supply to the last socket on the factory floor.
Substations
[11kV / 33kV] indoor and outdoor substations — transformers, HT switchgear, protection, earthing and civil coordination.
Transformers
Distribution transformers supplied, installed, tested and commissioned, with oil testing and protection setting.
HT & LT switchgear
HT panels, VCBs, LT main distribution boards, sub-distribution boards, MCC and bus-bar trunking.
PFI plants & power factor correction
Automatic PFI plants sized to your load profile, to lift power factor and remove penalty charges from your bill.
Industrial electrical installation
Cabling, containment, machine power, lighting and small power, distribution and load balancing across a plant.
Earthing & lightning protection
Earth pit systems, equipotential bonding and lightning protection, with earth resistance measured and recorded.
Testing & commissioning
Insulation resistance, earth resistance, transformer oil, relay and protection testing, phase and load verification.
Electrical goods supply
Cables, panels, breakers, capacitors, meters, fittings and accessories from [brands you stock and are authorised for].
What's included in the package
An electrical package from us is delivered as six things. If a contractor gives you cabling and an invoice, the approval, the safety case and the testing evidence remain your problem.
01 · Load study & single-line diagram
Connected load, demand factors, future expansion and fault levels assessed — with a single-line diagram that shows how the whole installation actually hangs together, not just what was installed where.
02 · Design & utility submission drawings
Substation layout, SLD, protection scheme and cable schedules in the form the utility requires for approval. [State plainly whether you prepare and submit, or support the client's submission.]
03 · Supplied equipment, with test certificates
Transformer, switchgear, cable and panel supplied with make, model, rating and factory test certificates — the documents the utility and your insurer both ask for.
04 · Installation with cable and protection schedules
Cabling sized and routed to the design, protection devices set and discriminated, and every circuit recorded in a schedule so nobody is tracing wires by hand three years from now.
05 · Testing & commissioning report
Insulation resistance, earth resistance, continuity, transformer oil, relay settings and phase rotation — measured, recorded and issued as a report with values, not a signature on a form.
06 · Energisation support & as-built documentation
We stay on it through utility inspection and energisation, and hand over as-built drawings, panel schedules, protection settings and O&M documentation.
How we deliver it
- Design for the load you will have, not just the load you have. Demand is assessed with your expansion plans in view. A substation sized exactly to today is a substation you replace or augment in three years — and augmenting a live installation costs several times what allowing for it at the outset would have.
- Drawings prepared for the utility that will approve them. Approval documentation is prepared to the reviewing utility's own requirements, not a generic format. Most energisation delays are documentation delays, and they are entirely avoidable.
- Protection coordinated, not just installed. Breakers and relays are selected and set so a fault trips the device nearest to it. An installation with uncoordinated protection works perfectly until the first fault takes out the whole plant instead of one machine.
- Cable sized on current, voltage drop and fault level — all three. Undersized cable is the most common and most dangerous economy in this trade. Sizing on current alone passes an inspection and overheats in service.
- Everything tested with values recorded. Insulation resistance, earth resistance and protection settings measured and written down. Recorded values give you a baseline — without one, nobody can tell later whether an installation has degraded or was always marginal.
- Handed over with schedules that make the next job possible. As-built drawings, panel schedules and protection settings, so the next contractor, your maintenance team or an insurer's inspector can understand the installation without opening it.
Electrical infrastructure in Bangladesh
An electrical installation here is judged by the utility, by the electricity bill, and — in the worst case — by an insurer after a fire. Four factors shape how we design and build every one.
Utility approval and energisation
Connection, metering and energisation run through [DPDC / DESCO / NESCO / BPDB / REB / PGCB — state which you deal with], each with its own documentation requirements and inspection process. Knowing what a specific utility will accept — and preparing for it from day one — is usually the difference between energising on schedule and waiting weeks with a finished substation.
Power factor penalties
Industrial tariffs penalise low power factor, and inductive load — motors, welding sets, compressors — pulls it down. A correctly sized automatic PFI plant removes the penalty and reduces losses, and typically pays for itself out of the bill it stops generating. [Confirm the current penalty threshold before quoting it.]
Supply quality and equipment stress
Voltage fluctuation, harmonics from drives and electronic loads, and frequent switching are hard on motors, transformers and capacitors here. Protection settings and equipment selection are made for the supply that actually exists, not a theoretically stable one.
Electrical fire risk in factories
Electrical faults remain a leading ignition source in industrial buildings. Correct cable sizing, coordinated protection, proper earthing and terminations that are actually torqued are fire prevention as much as they are electrical practice — which is why our installations are tested and recorded rather than simply energised.
Standards and licensing
Governing: [BNBC Part 8 — Building Services / electrical provisions, EDITION] · [Bangladesh Electricity Act and Rules — CONFIRM current instrument]
Applied per project: IEC 60364 (electrical installations) · IEC 62271 (HV switchgear) · IEC 60076 (power transformers) · IEC 60502 (cables) · [IEEE / BS 7671 where specified]
Utility requirements: [DPDC / DESCO / NESCO / BPDB / REB / PGCB] connection, metering and protection requirements as applicable to the supply area
Licensing: [State the electrical licence grade(s) your firm and supervisors hold. This is a regulated trade — a stated, checkable licence is a strong trust signal and some clients cannot appoint you without it.]
Brands we supply
[List the switchgear, transformer, cable, capacitor and panel-component brands you supply, and state clearly which you are an authorised dealer or distributor for.]
Brand names are strong commercial keywords here, and procurement officers search by them. List only what you genuinely supply and can support.
Maintenance, testing & thermographic inspection
A distinct engagement, and the one that prevents the expensive kind of failure. Electrical systems degrade invisibly — loose terminations heat, insulation ages, earth resistance rises, transformer oil deteriorates. We provide scheduled electrical maintenance: thermographic scanning under load, insulation and earth testing, transformer oil analysis, protection relay verification, panel cleaning and torque checks — with every reading documented and trended so you see a problem forming rather than after it fails.
Common triggers
- A substation or panel installation with no maintenance history
- Nuisance tripping, or breakers that trip without an identifiable fault
- Overheating panels, discoloured terminations or a burning smell in a switch room
- A power factor penalty appearing or rising on the electricity bill
- Transformer running hot, noisy, or with oil that has not been tested
- An insurer, buyer or safety audit requiring documented electrical testing
- An installation inherited with a building, of unknown standard and age
- Expansion planned onto a system whose spare capacity nobody has calculated
Typical programme
| Scope | Design & approval | Supply | Install, test & energise |
|---|---|---|---|
| [11kV] substation, [X] kVA | [X–X] weeks | [X–X] weeks | [X–X] weeks |
| LT panel & distribution, factory | [X] week | [X–X] weeks | [X–X] weeks |
| PFI plant, [X] kVAr | [X] week | [X–X] weeks | [X] week |
| Full factory electrical installation | [X–X] weeks | [X–X] weeks | [X–X] weeks |
Utility approval and energisation sit partly outside our control, which is why we start the submission in parallel with procurement rather than after installation. Transformer and HT switchgear lead times commonly govern the programme; both are confirmed at quotation.
Common questions
[State plainly: whether you prepare and submit the documentation to DPDC/DESCO/REB and follow it through inspection and energisation, or prepare drawings for the client’s own submission. This is the single most important question on this page for a factory buyer.]
Driven by capacity, voltage level, indoor or outdoor configuration, transformer type and the protection and metering the utility requires — plus the civil works, which are often quoted separately and cause misleading comparisons. [State your quotation basis and, if possible, an indicative range by kVA.]
Sized on your connected load, demand factor and realistic expansion — not on machine nameplate totals, which overstate demand, or on today’s usage, which understates tomorrow’s. We carry out a load study and give you the basis in writing.
Where you are being penalised for low power factor, yes — and the saving is measurable on the bill rather than theoretical. We measure your actual power factor and load profile first and tell you what a correctly sized plant would save and what it costs. If the numbers don’t justify it, we’ll say so.
Largely. New installations are built alongside and tied in during a planned window. For work on live systems we plan the shutdown scope, sequence and duration in advance and agree it with you — we do not improvise outages on a running plant.
[State the licence grades held by your firm and supervising staff. This is a regulated trade and a checkable claim — and some corporate and government clients cannot appoint an unlicensed contractor at all.]
Yes. We start with a condition survey — thermographic scan, insulation and earth testing, and a protection review — and give you a written position on what is unsafe, what is marginal and what is fine, before any maintenance contract is agreed.
Yes. Insulation resistance, earth resistance, thermographic imaging and protection verification are issued as a report with measured values, dated and referenced to the circuits tested — the form auditors and insurers actually accept.
Tell us what you need powered.
Send your load list, machine schedule or building type — or just tell us what isn’t working. We will survey the site, tell you what the supply and distribution need to be, what approval the utility will require, and what it costs.
[+880 XXXX XXXXXX] · [info@innovateengineering.com.bd]