The DPZ-30A series automatic backup intelligent monitoring device is suitable for segmented protection, measurement and control of voltage levels of 35kV and below, and is used for segmented or single busbar segmentation

The backup power supply switching in operation mode can complete the functions of segmented self switching, segmented mutual switching, and incoming line mutual switching.

The DPZ-31A is equipped with segmented automatic switching. The DPZ-31A has a segmented operation circuit and is equipped with segmented switch protection functions, including three-stage compound voltage blocking current protection

Zero sequence current protection, current acceleration, zero sequence acceleration (acceleration section also serves as charging protection) protection, three-phase primary reclosing, overload interlocking, etc

Function. It has independent segmented circuit measurement CT, but no incoming voltage monitoring, which can accurately measure parameters such as segmented circuit power and electrical energy.

DPZ-32A is equipped with segmented automatic switching, segmented mutual switching, incoming line mutual switching, and main transformer backup switching, and has overload switching function. DPZ-32A can measure the voltage of two incoming lines,

Two incoming three-phase protection currents.