Power Transformers Exporters in Bangladesh: Verified Supplier Checklist
A printable checklist to verify power transformer exporters in Bangladesh before you order: export documents, factory role, per-model test evidence, quality certificates, commercial terms and references, with fixes for the failures buyers meet most often.
Short answer
Before ordering power transformers from Bangladesh, verify the exporter in writing: export registration and company documents, whether it makes the units or trades them, the exact model scope, routine and type test evidence for that model, certificate scope and dates, and complete commercial terms. A supplier that passes every block is ready for a purchase order; a gap in any block is a question to close first, not a detail to settle after payment.
On this page
If you plan to buy power transformers from Bangladesh, check the supplier before you check the price. Most risk sits in who made the unit, what evidence supports the offered model, and what the contract covers. This checklist lets you compare suppliers on the same evidence, recording each item as pass, fail, or to close. It checks the exporter, not the unit: for unit checks, use the power transformers quality control checklist.
Why this checklist matters
Two suppliers can quote the same rating yet offer different factories, test evidence, accessories, and terms for spares and claims. Without a written check, those differences surface after the order, when changing supplier, test plan, or delivery terms costs time and leverage.
A checklist also explains the decision inside your own organisation: which documents were seen, which test reports matched the offered model, and which gaps were accepted in writing.
Before you start
Gather four things before contacting suppliers: the technical schedule, the destination rules, the test and document list you will require, and the commercial terms you will not move on. Put rating, voltages, frequency, phases, vector group, cooling method, and tap range in the schedule, marking unconfirmed items as provisional, so a supplier prices the assumption rather than guessing it.
Ask every supplier for documents in the same form: a reference for each certificate, a test report naming the model, and a quotation listing accessories, tests, and documents separately. A brochure and a price do not answer the checklist. The Export Registration Certificate (ERC) is the starting point for a Bangladeshi exporter: it is issued by the Office of the Chief Controller of Imports and Exports (CCI&E), and a business needs it to export commercially.1
The full checklist (numbered, printable)
Work through the list in order, recording one result per item β pass, fail, or to close β with the document reference beside it. Do not pass an item on a verbal assurance.
Identity and export standing
ERC current, in the supplier's legal name, correct category: general for a manufacturer-exporter or commercial exporter, indenting for an agent arranging exports without handling goods.1
Trade licence current; Taxpayer Identification Number (TIN) and Business Identification Number (BIN) match the company name on the quotation.
Company name identical on quotation, proforma invoice, contract, and bank account details. A mismatch is a stop item until explained in writing.
Nominated bank is an Authorized Dealer (AD) bank branch able to handle the export transaction; confirm bank details through a channel separate from the quotation email.
Any chamber or association membership claimed, with name and expiry date, matching the supplier's legal name.
Maker or trader
Supplier states in writing whether it manufactures, assembles, or trades the model, and names the factory that makes it.
Manufacturer: factory address and production steps done there. Trader: maker, authority to sell that maker's units, and who tests them.
Factory scope covers the offered rating and voltage class; one size range does not automatically cover a larger or higher-voltage model.
Subcontracted work disclosed, with the test location named. Undisclosed subcontracting is a fail.
Technical scope, per model
Technical schedule confirmed in writing: rated power, voltages, frequency, phases, vector group, cooling method, tap range, accessories included.
Standard and edition named, for example IEC 60076-1 for general requirements, plus any destination standard. IEC 60076-1 covers ratings, tolerances, and test classification.2
Liquid-immersed units: temperature-rise basis confirmed. IEC 60076-2 sets temperature-rise limits and test methods for liquid-immersed transformers.3
Service conditions at the installation site confirmed β altitude, ambient temperature β with any unusual condition needing a design adjustment recorded in the contract.
Losses, impedance, and efficiency figures given only for the offered model, with the test method named beside each figure.
HS classification confirmed: heading 8504 covers electrical transformers; liquid dielectric transformers split by capacity β up to 650 kVA, over 650 kVA to 10,000 kVA, and over 10,000 kVA.4
Test evidence, per model
Routine test report for the unit to be shipped: routine tests run on every unit, covering winding resistance, ratio and vector group, losses, dielectric checks, and, for oil-immersed units, oil and tank leak checks.5
Type test report for the same design, with design, rating, and factory matching the offered model. A report for a different model is not evidence for this order.
Special tests ordered in writing before production, such as sound level measurement, recorded as contract items, not later additions.5
Every report identified by model, serial number where applicable, laboratory, test date, and standard edition. A report without a model reference cannot be matched to the order.
Liquid-immersed units: oil test items confirmed β dielectric strength, moisture content, acidity β against the agreed limits.5
Quality certificates
Scope read on every certificate, not the logo: it must name transformer manufacture, or trading in transformers, as applicable, plus issuing body and dates.
ISO 9001 checked against its cycle: valid for three years, maintained through annual surveillance audits and a three-yearly recertification audit.6 Expired, or covering another product, is a fail.
Other certificates treated the same way: scope, issuing body, dates, destination acceptance. A certificate not covering this product does not support this order.
Commercial terms
Quotation complete: quantity, unit price and currency, Incoterm, validity, lead time, accessories, tests, documents, packing, transport scope, each stated separately.
Payment terms confirmed, with the documents triggering each payment and the bank account name consistent with item 3.
Lead time in stages β production, testing, packing, transport β with the date each stage is confirmed. A single delivery date with no stages cannot be tracked.
Spares, warranty period, and claims process confirmed in writing: coverage, how a claim is raised, evidence needed, time for each step.
References and the decision
References for similar ratings and voltage classes, with a contact who can confirm the supply; record whether each was contacted and what was confirmed.
Check method decided before ordering β factory visit, third-party inspection, or witnessed test β with hold points named in the contract and a person responsible for each.
Decision rule applied: no production order until every fail is closed or accepted in writing, with the risk and the person accepting it named.
Common failures and how to fix them
The most common failure is a name mismatch across quotation, bank account, and certificate. Reconcile the names before payment: a payment to a mismatched account is hard to unwind.
Next is a certificate or test report covering a different model. Suppliers sometimes send the strongest report they hold, not the report for the model quoted. Ask for the report by model and factory.
A third failure is a quotation omitting tests, accessories, or packing. Compare quotations against items 10, 16, and 24, and ask each supplier to price the missing lines.
A fourth failure is a trader presented as a manufacturer. A trader with a named maker, written authority, and clear test location can be sound; the failure is the undisclosed role.
Finally, buyers sometimes accept a warranty period with no claims process. Before ordering, confirm how a claim is raised, what evidence is required, and who decides it.
Downloadable template / summary table
Copy the table into your inspection sheet, add a column for the document reference and result, and keep one row per supplier. A row marked "to close" needs an owner and a date.
Checklist block | What to record | Close-out |
|---|---|---|
Identity and export standing | ERC, trade licence, TIN, BIN, bank details | Names match on every document |
Maker or trader | Factory, role, subcontracting, test location | Role stated in writing |
Technical scope, per model | Schedule, standard, service conditions, HS code | One schedule per model |
Test evidence, per model | Routine, type, and special test reports | Reports name the offered model |
Quality certificates | Scope, issuer, dates | Scope covers this product and role |
Commercial terms | Quotation lines, payment, stages, spares, claims | No open price or term lines |
References and decision | References contacted, visit or inspection plan | Fails closed or accepted in writing |
How Exportain helps
Exportain profiles show the document and photo checks a supplier has completed, and the badges earned from them. On the seller verification page, Exportain states that verification is a document and photo review, not a factory inspection, and that membership never grants a badge.7 The trust center lists the checks behind each badge, including identity, business registration, export registration, and facility photos, and states that a badge is not a guarantee of production capacity, product quality, or delivery.8
Use that distinction here: a badge tells you which documents Exportain has reviewed, while items 6 to 23 still need the supplier's own evidence for the model you are buying. Read the supplier verification guide alongside the electrical equipment exporter guide and the find suppliers guide. Exportain is not a party to the goods contract and does not inspect goods, book freight, or clear customs.
FAQs
When should this checklist be used?
Use it before the first order with a new supplier, and again when the model, factory, rating, or voltage class changes. For repeat orders of the same model from the same factory, re-check expiring documents, such as certificates and the ERC, and confirm the test plan has not changed.
Who should complete it?
The buyer, a buying agent, or an independent inspector can complete it, provided the same team checks every supplier against the same list and records each document reference.
What are the most common failures?
Name mismatches across documents, certificates and test reports covering a different model, quotations omitting tests or accessories, an undisclosed trader role, and a warranty period with no written claims process are the failures buyers meet most often.
Can a third party do it?
Yes, if you share the technical schedule, test and document list, and decision rule before the check starts, and agree what it will witness, collect, and report.
Next steps on Exportain
Start by browsing suppliers and reading what each profile's badges cover on the seller verification page, then follow the buying steps on how to buy. When the shortlist is set, send each supplier the same technical schedule and this checklist, and compare their evidence line by line before accepting a quotation. For the shipment itself, read the how to import power transformers guide and the HS code for power transformers guide.
Sources
- Export Registration Certificate (ERC) In Bangladesh: How To Apply. Bizmend, (accessed )
- IEC 60076-1:2011 - Power transformers β Part 1: General. International Electrotechnical Commission (accessed )
- IEC 60076-2:2011 - Power transformers - Part 2: Temperature rise for liquid-immersed transformers. International Electrotechnical Commission (accessed )
- HS, 2017 - Code 8504. United Nations Statistics Division (accessed )
- What Are Routine and Special Tests for Transformers?. Taishan Transformer (accessed )
- ISO 9001 Certification - Quality Management Standard. NQA (accessed )
- Supplier verification: Earn trust badges buyers can see. Exportain (accessed )
- Trust & Safety Center. Exportain (accessed )
About the author
Sourcing from Bangladesh?
Post a request for quotation and suppliers on Exportain can send you their quotes directly.
Post an RFQ
