Eliminate the need to manually switch your power source between inverter and generator. It automatically senses generator AC power and switches the output between inverter and generator accordingly.

Take the hassle out of wiring a changeover switch between inverter and generator. Have this option fitted to your LS series inverter to simplify your power system wiring. Simply connect the generator to the hardwire terminals its that easy!

Features

• Available exclusively to the new LS series from 1000W to 7000W models
• No break changeover time of 0.01 second ( < half a cycle)
• Double pole contactor switching both active and neutral
• Minimise and simplify system wiring

System Block Diagram

This module is available with the automatic AC transfer switch option, for the LS series sinewave inverters from 2000W to 7000W models. It offers further protection to connected appliances from generator voltage fluctuations and ensures a cleaner and more stable AC supply.

Upon the starting of a generator, it’s output voltage will rise and stabilise as the generator speed increases and stabilises. Once the generator voltage is within the required limits the ON delay timer provides a short delay before switching the generator power to the output. This ensures the generator is warmed up and the output voltage is stable. The generator output voltage is continuously monitored and if it is outside the set limits the transfer switch will switch back to inverter. This prevents brown outs due to low voltage and over voltage surges, which can harm appliances.

On Delay Timer – ensures the generator has warmed up and the output voltage is stable before the transfer switches, switches to generator.

Voltage Interlock – monitors the generator output voltage and if too high or too low the transfer switch will switch back to inverter output until the generator output restabilises.

Versatile – selectable voltage levels and time delay.

Note: Highly recommended for generators with large fly wheels, that ramp up and down slowly at start up and shut down.

Settings are adjustable via DIP switches located inside the Generator Input Junction Box.

Ton = On Delay Timer is selectable at 30 or 120seconds.
Vlow = Low voltage cut out is selectable between 190-220Vac.
Vhigh = Over voltage cut out is selectable between 260-270Vac.

Factory Settings are ON Delay = 30sec, Vlow = 200Vac, Vhigh = 270Vac.

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