Generator changeover sequence guide
Agree source conditions, timing and interlocks before choosing a transfer controller.
Decisions before procurement
| Decision | What to establish | Evidence to bring |
|---|---|---|
| Recognise and start | Define failure thresholds, recognition delay, generator start and failed-start alarm. | Voltage/frequency limits and generator interface |
| Transfer | Check stabilisation and mechanically/electrically interlocked open transfer. Closed transition needs a separate engineered scheme. | Switching assembly, neutral arrangement and interruption allowance |
| Return and cool down | Agree return delay, retransfer, unloaded cooling and manual operation. The controller is not the complete switching assembly. | Cause-and-effect and witnessed acceptance tests |
Your project brief
- Single-line diagram and current/fault duty
- Source ratings and generator interfaces
- Neutral/earthing arrangement and interlocks
- Delays, alarms, interruption and test scope
Confirm the actual supply and control voltage. Kenyan projects commonly specify 230/240 V single-phase or 400/415 V three-phase; the selected equipment must match the measured supply and manufacturer rating.
Engineering methods
Related guides
Choose a reference or send your BOQ
Compare relevant product families, then confirm the exact rating, control supply and duty. Price and availability are confirmed with your enquiry.
Technical references
These references support planning. The exact model documentation and a project-specific engineering review govern the final specification.