TESTSET
1 µs monotonic clock resolution; 10 kHz BI sampling; 0.5 ms deglitch; 0 ms debounce holdoff.
Before injection
Lock the engineering context.
- Confirm active feeder setting group, revision, CT/VT context, and settings fingerprint.
- Confirm which functions are enabled: 50P-1, 51P, 50N, 51N, 67P, 67N, 27, 59, or 59N.
- Review source setpoints and virtual analog/binary wiring.
- Define expected pickup, operate, restraint, and external TESTSET result before START.
Closed-loop run
Read each timing event according to its authority.
| Event | Engineering meaning |
|---|---|
| RELAY ANY PU [source] | First generic pickup requesting BO2. |
| TESTSET BI2 ACCEPT | Accepted wired ANY-PICKUP input; not necessarily the eventual operated-element pickup. |
| Operated-element pickup | Pickup belonging to the element that ultimately operates. |
| Operated-element P→T | That element's own pickup-to-trip interval. |
| Relay trip request | Live relay trip-latch edge requesting BO1. |
| TESTSET BI1 ACCEPT | Authoritative external trip time and optional source auto-stop trigger. |
Critical invariant: internal relay trip state is never a direct TESTSET timing shortcut. Opening BO1→BI1 must remove the external measured trip even when the relay still operates internally.
Timing profile
Know the model behind the numbers.
Relay
4 kHz / 250 µs acquisition, instantaneous signed terminal samples, clipping/quantization, 1.5 ms behavioral delay, causal rolling DFT.
Timer edge
Definite/inverse timing starts at the first observed pickup frame. A representable 60 ms 50P delay produces 60.000 ms operated-element P→T.
Post-trip review
Freeze evidence without confusing it with live output.
- Confirm auto-stop occurs only from accepted BI1 when enabled.
- Verify OUTPUT OFF · FROZEN CAPTURE; configured setpoints may remain visible while effective output is zero.
- Review schema 9 timing timeline, operated-element attribution, capture-frame relationship, settings fingerprint, and topology/run identity.
- Press relay RESET once and wait for READY TO RE-ARM.
- Confirm completed timing/evidence remains available and the source has not been restarted or mutated.
Restraint and negative cases
Prove non-operation as deliberately as operation.
- Below-pickup and dropout cases
- Directional reverse cases for 67 functions
- Voltage restraint/non-operate cases
- Open BO1→BI1 wiring case
- Process-bus trust blocks when replay/live data is used
- Repeated run after one-click re-arm
Boundary
This workflow is behavioral engineering evidence.
It is not calibrated relay-test-set evidence, a named commercial relay equivalence result, IEC 60255 type-test evidence, or formal commissioning acceptance.