INTERLOCK TRIP Socomec — Accidental Parallel of Sources
At a glance
- Severity
- E STOP
- Domain
- TRANSFER_SWITCH_SYSTEM
- Reference standard
- CEI 0-16 / CEI 0-21
What it means
Accidental parallel of unsynchronized sources from a failed interlock or wrong switching: severe equipment damage and personnel risk. Rare but catastrophic.
Probable causes
- Mechanical/electrical interlock tampered or failed
- Maintenance jumpers or bypasses left closed
- Switching performed without procedure (MOP)
- Unverified board modifications
Where to start
If the event already happened: make safe, isolate the involved sources and assess damage on switches, UPS and boards before any re-arming.
Full guided diagnosis in the app
The diagnostic tree for this fault has 3 guided steps with measurements, checks and resolutions. You'll find it in DataCIQ, one of the five IndexOS apps: free, works offline.
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The same fault on other brands
More Socomec codes
- STATIC SWITCH FAULT — STS Transfer Failure
- TRANSFER FAILURE — ATS Transfer Failure