Static transfer switch STS (Optional)
At this time, the energy generated by the PCS system is supplied to load and the
power grid. If the load power is greater than the output power set by the PCS system, the excess power is provided by the power grid. When the power grid suddenly falls off, the electronic switch is disconnected, the PCS system switches to the off-grid working mode, and the load is supplied by the PCS system. After the power grid returns to normal, the PCS system is cut back to its original working state. When the PCS system is in the state of grid-connected charging, the load is supplied by the power grid, and the PCS system uses the excess electric energy other than the load to charge the battery. When the power grid suddenly falls off, the electronic switch is disconnected, the PCS system switches to the off-grid working mode, and the load is supplied by the PCS system. After the power grid returns to normal, the PCS system is cut back to its original working state.