electrical.watts_to_kva

Three distinct suites: educational examples on the calculator page, this legacy regression count (11/11 golden + boundary), and the CVP verification suite below. They are not the same number. Property, metamorphic, round-trip, O3, and interface statuses/checks are recorded in the CVP Manifest . SKIP (0/0) means that suite has no published vectors.

This calculator CURRENT · Public schema 1.3.1 matches · Semantic contract ✓ · Production attested · Public/cache ✓ · Origin ✓

CVP verification suite

Protocol checks from the Evidence Manifest. Distinct from the legacy regression suite above. Verification revision 2026-10-28.meta-metrics-v2. Calculation version 1.3.1. CVP 1.0.0-proposed. 2/2 golden · 1/1 CVP boundary · 1/1 invalid · 2/2 metamorphic · 1/1 cross-interface · 6/6 CVP contract. digest 31ca95f0fd46.

• Golden (oracle-backed) 2 / 2
• CVP boundary 1 / 1
• Invalid input 1 / 1
• Metamorphic 2 / 2
• Cross-interface 1 / 1
• CVP contract 6 / 6
• Interfaces PASS · UI (SSR) / REST / MCP
• Interface claim ui-ssr is query-result HTML, not a live browser session.
• Assurance Engineering

• release artifacts aligned PASS
• schema output required declared PASS
• schema valid input executes PASS
• engine success output validates schema PASS
• schema rejects incomplete input PASS
• rest success payload validates schema PASS

Fingerprint sha256:38f332eb2dd6c8c1aa80f1b0ee0278953a64a6994fb9eb887474b66a49e145a5

Input schema sha256:c5c4cd498c7801cf23ae00b091e1c7b0d4621f02d00abb306e08d8cdd287e39a · Output schema sha256:3e4e1d7c02b0977888f8662c53faec045f16f67ddf9d0c50840942af558a9e26 · Build-time SHA-256 digests prove published artifacts agree with each other (release_integrity.scope=workspace). Production attestation GETs canonical URLs twice (public/cached view and origin), including Capability HTML, via npm run attest:production --write (published at /.well-known/calculatorx-production-attestation.json) and fails if the public Capability page advertises a different calculation_version. This is artifact consistency, not an independent immutable release log.

Tool

watts-to-kva

Engine

scale-quotient

Engine build

2026-09-15

Evidence core

2026-09-15T06:31:46.555Z

Rendered

2026-11-10T05:18:41.695Z

Last reviewed

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Assumptions

• PF between 0 and 1 (runtime treats missing/zero PF carefully on quotient)
• No voltage/phase required

Limitations

• PF ∈ (0,1] hard
• No voltage/phase required
• Shares the scale-quotient helper with kWh→W; contracts are distinct (PF vs time)