MV BREAKER TRIP ABB — Total MV Supply Loss
At a glance
- Severity
- FAULT STOP
- Domain
- MV_SUBSTATION_SYSTEM
- Reference standard
- CEI 0-16 / EN 50600-2-2
What it means
Total loss of the MV supply: the load moves to the UPS and the generators must start. How the next minutes are managed decides the outcome of the event.
Probable causes
- Utility network fault or upstream switching
- Substation protections tripped for a downstream fault
- MV breaker failure to operate (command, gas, auxiliaries)
- Switching error during substation work
Where to start
Verify UPS status (on battery), generator start and ATS transfer, and substation indications (second feeder available?).
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 ABB codes
- 51 TRIP — LV Main Breaker Trip
- FEEDER TRIP — Loss of One MV Feeder
- PHASE UNBALANCE — Phase Imbalance Upstream
- SPD END OF LIFE — SPD Cartridges Depleted
- WTI TRIP — Transformer Overtemperature / Insulation Fault
- 2310 — Overcurrent Fault
- 2330 — Ground Fault
- 3210 — DC Bus Overvoltage Fault