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Commissioning checklist per equipment

Choose the equipment and the commissioning stage and get what to verify, with the reference standard of each point. Tick what has been verified, write remarks and download the list as PDF or CSV.

IEC 60076-1transformersIEC 62271-100circuit breakersIEC 61869-2instrument transformersIEEE C37.233protection testingIEC 62446-1photovoltaic systemsANSI/NETA ATSacceptance testing

Example cases
Commissioning checklist per equipment
E1Equipment and stage

E2Identification
Verified points

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Pending points

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Points with remarks

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Points in the list

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What to verify

CodeWhat to verifyReferenceCriterionVerifiedRemark

Reference standards of this list

StandardTitle

What it means for your project

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    What it is for

    To prepare or review the commissioning scope of each piece of equipment before going to site, to leave no point uncovered when moving from one stage to the next, and to hand the client a signed list of what was verified and what was left with remarks. It applies to medium, high and extra-high voltage substations, industrial plants, solar plants and battery energy storage systems.

    How the list is built

    IEC 62337commissioning stages and milestonesEN 50110-1operation of electrical installations

    • Three stages: cold, with the power circuits de-energized (inspection, static tests of each item and functional tests with the auxiliary supplies); energization, with the conditions for applying voltage for the first time and what is observed when doing so; and hot, with voltage and load, where what does not exist without them is verified.
    • Closing the cold stage: every energization starts with the non-conformities resolved or accepted in writing, the temporary earths removed and an approved switching sequence with a single person in charge.

    IEC 60076-1transformersIEC 62271-100circuit breakersIEC 61869-2CTIEEE C37.233protectionIEC 62446-1photovoltaicsANSI/NETA ATSacceptance testing

    • One standard per point: each point cites the equipment standard or the guide that covers it (IEC, IEEE, NETA or NFPA). The standard and its topic are cited, never an unverified clause number.
    • Acceptance criterion: written only where the standard sets it in general terms (the ratio tolerance of IEC 60076-1, the class limit of a CT in IEC 61869-2, the auxiliary voltage range of IEC 62271-1) or where the reference is the factory test report. Every other point says «per standard and manufacturer»: the value is set by the standard, the manufacturer and the approved project test plan.
    • What, not how: the list names the check, not the procedure. Test connections, test sets, sequences and values depend on the actual equipment and its manufacturer.
    • Grid operator requirements: in solar plants and BESS some points depend on what the grid operator of each country requires; the list marks them as such, without citing a standard.

    Limits of the list

    • It is a general list per equipment type; the project test plan adds or removes points according to the technology, the voltage level and the contract.
    • It is not a procedure: it does not say how to perform each test, with which test set or in which order.
    • It carries no acceptance values of its own; where it says «per standard and manufacturer», the value comes from the standard, the factory test report and the manual.
    • Ticks and remarks are stored only in this browser; download the PDF or the CSV to keep them.
    • Work safety (isolation and lock-out, clearances, permits) follows the site rules and local regulations.

    Frequently asked questions

    What should a commissioning checklist include?

    For each piece of equipment and each stage: what is inspected and what is tested, the standard behind it, the acceptance criterion, a verified box and space for remarks. The criterion comes from the standard, the factory test report and the manufacturer's manual; a list with values and no source is not valid evidence.

    What is the difference between cold and hot commissioning?

    Cold commissioning is done with the power circuits de-energized: inspection, static tests of each item and functional tests with the auxiliary supplies. Hot commissioning starts once the installation is energized and verifies what only exists with voltage and load: phase sequence and phasing, directionality of the protections, real measurements and thermography.

    Where are the acceptance values of each test?

    In the standard of each equipment type, in the factory test report and in the manufacturer's manual, and the approved project test plan fixes them for each item. That is why the list cites them as «per standard and manufacturer» and only writes a criterion where the standard sets it in general terms, such as the accuracy class limit of a CT.

    We commission your equipment

    Our team performs the cold tests, the energization and the hot checks of substations, industrial plants and solar plants, with a signed test record for each item.

    Contact us about on-site testingSee FAT and SAT testing

    Related guides

    Substation commissioning: stages and testsSubstation commissioning: stages, tests on primary equipment, protection, control and SAS, energization and the documents delivered at the end.Cold and hot commissioning: de-energized vs energizedWhat is tested in cold commissioning, with the power circuits de-energized, and what can only be checked hot: phasing, synchronism, directionality, load.Pre-commissioning, commissioning and start-upWhat commissioning is, how it differs from pre-commissioning and start-up, which tests go in each stage and how the terms are used across industries.Power transformer commissioning testsPower transformer commissioning tests: what is measured, why and in what order, and how the results compare with factory and maintenance tests.Commissioning dossier: test reports and as-builtWhich documents commissioning must leave behind: test reports, FAT and SAT reports, loaded settings, verified signal lists and as-built drawings.

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