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dc type voltage sag protection device

产品说明：

the dc type voltage sag protection device is a system that uses the residual voltage of the power grid to perform boost compensation, and the vsp module is connected in parallel with the load side frequency converter. when the three-phase ac voltage is normal, the vsp enters the hot standby state, and the inverter is normally powered by the three-phase alternating current. when the ac voltage drops temporarily, the vsp system detects that the ac voltage drops and automatically puts into operation and starts timing. that is, the vsp module outputs a stable dc500v to the dc bus of the inverter, which provides voltage support to ensure the normal operation of the inverter. after the grid returns to normal, the vsp system automatically withdraws from the support and the timing ends. for systems that use a small number of batteries for boost compensation, a small number of batteries are connected in parallel with the dc bus of the inverter via the vsp module output dc500v. when there is voltage dip or short-term power failure in the ac grid, the vsp output provides voltage support for the dc bus of the inverter and starts timing to ensure normal operation of the inverter. after the grid returns to normal, the vsp automatically withdraws from the support, the timing ends, and at the same time prepares for the next grid voltage sag and short-term interruption.