Product overview
ATS unit with microprocessor controller, generator monitoring and synchronisation protection.
Recommended supply configuration Select the simplest reliable Chinese model or inspected second-hand alternative, with manual loading and local installation where practical.
Applications and primary use
- Automatic transfer between utility power and a standby generator when the preferred source fails.
- Generator start/stop signalling and controlled return to utility power after voltage stabilises.
- Power continuity for factories, workshops, commercial buildings and other sites with essential loads.
- New installations or replacement panels where source ratings and protection coordination are verified.
Technical specifications and selection parameters
| Selection parameter | Required function / value | Buyer or site input |
|---|---|---|
| System voltage and frequency | Match both incoming sources and the site distribution system | State phase, line voltage and frequency |
| Rated current | Carry the calculated continuous load without overheating | Provide maximum demand, load list or transformer/generator rating |
| Pole arrangement | Switch phases and neutral as required by the earthing design | Confirm 3-pole or 4-pole requirement |
| Transfer device | Breaker, contactor or dedicated switch mechanism with positive interlocking | State required short-circuit and breaking duty |
| ATS controller | Monitor voltage, frequency, phase condition and source availability | Confirm transfer, retransfer and generator cool-down delays |
| Generator interface | Provide compatible dry-contact start/stop control and status feedback | Share generator controller model and signal requirements |
| Manual operation | Allow safe local operation and testing when automatic control is unavailable | Confirm whether bypass/isolation is required |
| Enclosure and installation | Protect components for the actual indoor or outdoor environment | State IP requirement, cable entry and mounting arrangement |
| Indication and communication | Display source status, alarms and switch position | List required meters, remote contacts or communication protocol |
Buyer checklist and quotation requirements
- Provide a single-line diagram showing utility, generator, ATS and outgoing load connection.
- State system voltage, frequency, phase arrangement and whether the neutral must be switched.
- Provide maximum load current or the connected-load and demand calculation.
- Confirm generator rating, controller model and the required remote-start contact logic.
- State available short-circuit level and upstream/downstream protective-device ratings.
- Confirm transfer delays, retransfer delay, generator warm-up/cool-down and test-mode requirements.
- State indoor/outdoor location, temperature, dust, enclosure rating and cable-entry direction.
- Request wiring diagrams, factory test records, spare-parts list and a video of the offered unit operating.
Product pricing note
Final ATS pricing follows the confirmed rated current, pole arrangement, transfer mechanism, short-circuit duty, controller functions, enclosure, accessories, inspection scope and delivery terms.
Detailed proposal and next step
The proposal contains the equipment scope, technical selection points, supplier and inspection considerations, delivery planning and Sanaatchi contact details. Final selection follows the confirmed duty, specification and site conditions.