{
  "schemaVersion": 1,
  "product": "ARVREL",
  "version": "0.1.0-beta.6",
  "evidenceClass": "deterministic-software-tests",
  "boundary": "These scenarios demonstrate repeatable behavior for the referenced source and fixtures. Closed-loop timing is a deterministic behavioral software model, not calibrated test-equipment metrology. The scenarios are not IEC 60255 type-test, IEC 61850 conformance, hard-real-time, commissioning, or operational-trip evidence.",
  "scenarios": [
    {"id":"SIG-001","title":"Balanced fundamental RMS and positive sequence","category":"measurement","input":"80 samples per cycle; balanced 2 A RMS current and 63.5 V RMS voltage at nominal frequency","expected":"Phase RMS and positive-sequence magnitudes match the synthetic inputs; negative sequence remains near zero","outcome":"measure","sourceFile":"src/Arvrel.Protection/FeederProtection.cs","testFile":"tests/Arvrel.Protection.Tests/FeederProtectionTests.cs","testMethod":"FundamentalEstimator_ReturnsRmsMagnitudeAndBalancedPositiveSequence"},
    {"id":"P50-001","title":"Normal load remains secure","category":"protection-security","input":"Balanced 1 A phase current and 0.02 A residual current under healthy SMV trust","expected":"No phase or earth pickup and no virtual trip latch","outcome":"restrain","sourceFile":"src/Arvrel.Protection/ProtectionEngine.cs","testFile":"tests/Arvrel.Protection.Tests/ProtectionEngineTests.cs","testMethod":"NormalLoad_RemainsSecure"},
    {"id":"P50-002","title":"Phase instantaneous overcurrent operates after definite delay","category":"protection-operate","input":"Phase A above 50P pickup under healthy SMV trust","expected":"Phase pickup, configured delay completion, and virtual trip latch","outcome":"operate","sourceFile":"src/Arvrel.Protection/ProtectionEngine.cs","testFile":"tests/Arvrel.Protection.Tests/ProtectionEngineTests.cs","testMethod":"PhaseInstantaneous_TripsAfterDefiniteDelay"},
    {"id":"TRUST-001","title":"SMV trust gate blocks trip without hiding pickup","category":"trust-restraint","input":"Phase current above pickup with trip-blocked SMV trust reason SMPCNT_GAP","expected":"Pickup remains visible, blocked state is asserted, and no new virtual trip is latched","outcome":"block-trip","sourceFile":"src/Arvrel.Protection/ProtectionEngine.cs","testFile":"tests/Arvrel.Protection.Tests/ProtectionEngineTests.cs","testMethod":"SmvTrustGate_BlocksOperationWithoutHidingPickup"},
    {"id":"V27-001","title":"Undervoltage 27 operates after configured delay","category":"protection-operate","input":"Balanced 70 V phase-neutral phasors with 90 V pickup and two-of-three logic","expected":"27 operates after the configured delay and latches a virtual trip","outcome":"operate","sourceFile":"src/Arvrel.Protection/FeederProtection.cs","testFile":"tests/Arvrel.Protection.Tests/FeederProtectionTests.cs","testMethod":"Undervoltage27_OperatesAfterConfiguredDelay"},
    {"id":"V59-001","title":"Overvoltage 59 operates after configured delay","category":"protection-operate","input":"Balanced 125 V phase-neutral phasors with 110 V pickup and one-of-three logic","expected":"59 operates after the configured delay and latches a virtual trip","outcome":"operate","sourceFile":"src/Arvrel.Protection/FeederProtection.cs","testFile":"tests/Arvrel.Protection.Tests/FeederProtectionTests.cs","testMethod":"Overvoltage59_OperatesAfterConfiguredDelay"},
    {"id":"V59N-001","title":"Residual overvoltage 59N operates from 3V0","category":"protection-operate","input":"Residual voltage magnitude above 59N pickup","expected":"59N operates from the residual quantity and latches a virtual trip","outcome":"operate","sourceFile":"src/Arvrel.Protection/FeederProtection.cs","testFile":"tests/Arvrel.Protection.Tests/FeederProtectionTests.cs","testMethod":"ResidualOvervoltage59N_OperatesFromThreeVZero"},
    {"id":"DIR-001","title":"67P forward direction operates","category":"directional-operate","input":"Positive-sequence current in the configured forward region with adequate V1 polarization","expected":"67P directional pickup, delay completion, and virtual trip","outcome":"operate","sourceFile":"src/Arvrel.Protection/FeederProtection.cs","testFile":"tests/Arvrel.Protection.Tests/FeederProtectionTests.cs","testMethod":"DirectionalPhase67_TripsForwardAndRestrainsReverse"},
    {"id":"DIR-002","title":"67P reverse direction restrains","category":"directional-restraint","input":"Positive-sequence current in the reverse region with adequate V1 polarization","expected":"No directional pickup and no virtual trip","outcome":"restrain","sourceFile":"src/Arvrel.Protection/FeederProtection.cs","testFile":"tests/Arvrel.Protection.Tests/FeederProtectionTests.cs","testMethod":"DirectionalPhase67_TripsForwardAndRestrainsReverse"},
    {"id":"DIR-003","title":"67N prefers independent residual channels","category":"directional-operate","input":"Balanced phase sums with explicit residual-current and residual-voltage channels","expected":"67N uses explicit 3I0/3V0 provenance and operates in the selected direction","outcome":"operate","sourceFile":"src/Arvrel.Protection/FeederProtection.cs","testFile":"tests/Arvrel.Protection.Tests/FeederProtectionTests.cs","testMethod":"DirectionalEarth67N_PrefersIndependentResidualChannelOverBalancedPhaseSum"},
    {"id":"MET-001","title":"CMC-style behavioral profile uses microsecond clock and 10 kHz BI sampling","category":"closed-loop-metrology","input":"Default MetrologyTimingProfile.CmcStyle","expected":"1 us metrology clock resolution, 10 kHz BI sampling, 100 us BI sample period, 0.5 ms deglitch, and zero debounce holdoff","outcome":"measure","sourceFile":"src/Arvrel.Application/Laboratory/MetrologyTiming.cs","testFile":"tests/Arvrel.Application.Tests/MetrologyGradeTimingTests.cs","testMethod":"CmcStyleProfileUsesMicrosecondClockAndTenKilohertzBinarySampling"},
    {"id":"MET-002","title":"Causal relay front end starts from settled pre-fault history","category":"closed-loop-acquisition","input":"Strong phase fault applied at T0 to a powered behavioral numerical relay","expected":"Measurement is valid at T0, no artificial empty one-cycle blackout occurs, and pickup develops causally as post-T0 samples replace pre-fault history","outcome":"measure","sourceFile":"src/Arvrel.Application/Laboratory/CausalRelayFrontEnd.cs","testFile":"tests/Arvrel.Application.Tests/MetrologyGradeTimingTests.cs","testMethod":"CausalRelayFrontEndStartsFromSettledPreFaultHistoryAndRespondsWithoutOneCycleBlackout"},
    {"id":"MET-003","title":"Desktop A-B-G closed loop has no unexplained trip timing gap","category":"closed-loop-operate","input":"Desktop-style A-B-G fault with the normal default protection setting group","expected":"Generic ANY PICKUP is distinct from the operated element, operated-element timing is causal, relay trip-to-BI1 follows the modeled contact/input path, and measured trip remains within the regression envelope","outcome":"operate","sourceFile":"src/Arvrel.Application/Laboratory/ClosedLoopVirtualTestBench.cs","testFile":"tests/Arvrel.Application.Tests/MetrologyGradeTimingTests.cs","testMethod":"DesktopDefaultA_B_GRunHasNoUnexplainedTripTimingGap"},
    {"id":"MET-004","title":"Closed-loop event timeline is chronologically causal","category":"closed-loop-evidence","input":"Timed feeder injection through relay contact and TESTSET BI paths","expected":"T0, relay pickup, relay trip request, BI2, BI1, and output stop events remain monotonic and event-derived timing matches authoritative snapshot timing","outcome":"measure","sourceFile":"src/Arvrel.Application/Laboratory/MetrologyTiming.cs","testFile":"tests/Arvrel.Application.Tests/MetrologyGradeTimingTests.cs","testMethod":"MetrologyTimelineOrdersPhysicalClosedLoopEvents"},
    {"id":"MET-005","title":"Open trip wire prevents external measured trip","category":"closed-loop-security","input":"Relay BO1-to-TESTSET BI1 virtual trip wire disconnected while an internal fault operates the relay","expected":"Relay internal trip may latch, but no TESTSET trip time is measured and the source does not trip-auto-stop","outcome":"restrain","sourceFile":"src/Arvrel.Application/Laboratory/ClosedLoopVirtualTestBench.cs","testFile":"tests/Arvrel.Application.Tests/MetrologyGradeTimingTests.cs","testMethod":"OpenTripWireStillPreventsMeasuredTripInMetrologyMode"}
  ]
}