electrical.power_factor

Three distinct suites: educational examples on the calculator page, this legacy regression count (26/26 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 1.5.1 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 1.5.1. CVP 1.0.0-proposed. 4/4 golden · 7/7 CVP boundary · 8/8 invalid · 8/8 property · 2/2 metamorphic · 1/1 cross-interface · 6/6 CVP contract. digest cefbd049baf9.

• Golden (oracle-backed) 4 / 4
• CVP boundary 7 / 7
• Invalid input 8 / 8
• Property 8 / 8
• 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 sha256:89a1b805a2d9a8d0f73adb83ec59a9c4dfad86e163aed81299e4e6b03b3972db

Input schema sha256:58f7124c7fa45a14a497899c2e332e231b44ed54732eafc036000d910742d5cb · Output schema sha256:033f5d62f827aa868e68783f3c570dd404f88eb2ad51504f45fb99dbbd307933 · 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

power-factor

Engine

power-factor

Engine build

2026-09-10

Evidence core

2026-09-10T22:48:17.762Z

Rendered

2026-11-10T05:18:41.666Z

Last reviewed

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Assumptions

• Sinusoidal RMS voltage and current magnitudes.
• Balanced three-phase when 3φ L-L or L-N modes are selected.
• Correction capacitor estimate (UI) fully offsets computed Q toward unity PF (idealized).

Limitations

• Correction capacitor estimate is UI-only (not part of the API result)
• Not for harmonic-rich or engineered bank design
• When P > S, PF is capped at 1 and Q = 0 (soft clamp)
• Voltage must be > 0 (VOLTAGE_MUST_BE_POSITIVE); zero volts is not a valid S=0 shortcut