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Lagos, Ojo, 1 hour ago
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Automatic Change Over
SAKO
Brand
Change Over
Type
Brand New
Condition
The ACO senses voltage from the main power (NEPA).
If voltage drops below a set level, or goes too high, the switch disconnects NEPA.
It connects the inverter or generator to the house load.
When NEPA voltage returns to normal, it switches back automatically.
Key Components
Relays: 2–4 depending on design
Relay 1 → Disconnect main power
Relay 2 → Connect alternate power
Optional: Additional relay → Interlock / delay
Voltage sensing circuit → detects over/under voltage
Delay timer → avoids frequent switching (e.g., 5–15 sec delay)
Manual override → switch to select NEPA or inverter
Safety tips
- Avoid paying in advance, even for delivery
- Meet with the seller at a safe public place
- Inspect the item and ensure it's exactly what you want
- Make sure that the packed item is the one you've inspected
- Only pay if you're satisfied
