Three-Phase UPS Commissioning: Agree the Acceptance Evidence First

Separate readiness, testing and acceptance

An installation can have complete paperwork but unperformed tests. It can also have a test report with unresolved configuration differences. Keep readiness review, witnessed observations and final acceptance as separate decisions.

Identify the exact host, battery arrangement, output setting, options and approved drawing revision. Record which team owns electrical installation, supplier commissioning, load behavior and the buyer's acceptance decision. A demonstration by one party does not automatically sign off another party's scope.

SGS's description of factory acceptance testing supports a useful general principle: checks are tied to contractual specifications, functionality and documents. It does not provide a universal three-phase site-commissioning procedure. The matrix below is a proposed set of questions for qualified approval, not a complete mandatory test list.

Give every requirement an evidence row

Start with the agreed requirement and add a named source for its limit. Avoid rows that say only “voltage OK” or “bypass tested.” They hide the configuration and observation that made the result meaningful.

RFC 1628 provides per-input and per-output management-table concepts. Those definitions help specify telemetry evidence, but they neither prove that a selected card implements it nor replace qualified electrical measurements required by the approved plan.

Do not let an aggregate pass conceal a phase failure

Consider a hypothetical acceptance criterion with a verified 10 kW limit on each phase. Observed demands of 11, 7 and 6 kW total 24 kW. The total can look acceptable against a 30 kW aggregate, while the first phase fails the assumed individual limit.

These values illustrate the evidence problem; they are not Highidea phase limits. Retain each phase's result, its applicable condition and the document that establishes the criterion. A supplier must interpret the actual product's imbalance and per-phase requirements.

Highidea's 33ET documentation describes a three-input/three-output online family. The selected voltage, battery configuration and operating mode still matter. A family name or aggregate kVA label does not complete the acceptance criteria for a site.

Copy a result cell for each scenario authorized in the actual plan. The qualified engineer supplies the limits and measurement method; this is not a demand to perform every test.

A stage not performed remains not obtained. Do not populate an untested stage from another load condition or infer a phase result from the total.

Define hold points before interruptions

For each proposed test, identify the approved procedure, authorized operator, protected-load consequence and release condition. A test should not begin merely because a witness is available. The responsible team must confirm readiness and a safe recovery arrangement.

Record whether evidence was witnessed, supplied as a report or not obtained. If the planned configuration changes, reassess the affected evidence instead of silently accepting a substitute battery, output setting or load scenario.

Do not derive a switching sequence from this checklist. Phase rotation, bypass transfers, protection and restoration can involve hazardous work and must follow the actual approved instructions.

Close deviations and preserve the final state

Each deviation needs a description, owner, disposition and supporting evidence. Distinguish a resolved technical result from a commercial agreement to accept a limitation; do not rewrite a failed observation as a pass.

The handover should identify the final drawing/configuration revisions, test records, remaining limitations and approval responsibility. Send Highidea the matrix early enough for the supplier to state what it can document or demonstrate. The purpose is an auditable acceptance decision, not a longer list of untraceable ticks.

Primary references

The references support the specific distinctions stated above. Manufacturer examples apply to their documented products; they do not establish the same capability in a Highidea model. Proposed worksheets and hypothetical examples are editorial decision tools, not approved installation or operating procedures.

SGS: Factory Acceptance Test

IETF / RFC Editor: RFC 1628: UPS Management Information Base