Life sewage treatment project later operation and maintenance is very important, so each professional operation and maintenance personnel for the electrical control and safety protection knowledge to fully understand.
At present, the domestic small domestic sewage treatment equipment rated voltage 220V and 380V two kinds of equipment circuits are generally designed in accordance with the three levels of load level, the environment is particularly sensitive areas should be designed according to the second level of load, power supply and distribution system should be consistent with the "Power Supply and Distribution System Design Specification" (GB 50052) in the relevant provisions of the design of the low-voltage distribution design should be consistent with the "Low-voltage Distribution Design Specification" (GB 50054) in the relevant provisions of the design of the low-voltage distribution system. GB 50054). For remote areas such as rural areas with unstable power supply, the power supply and distribution design of small domestic sewage treatment equipment should be configured with voltage stabilizers and protectors in order to avoid damage to the equipment and ripple effects on the surrounding power system.
Since most of the small domestic wastewater treatment equipment is designed to be buried in the ground and installed outdoors. Control cabinet should be installed leakage protection and grounding protection to avoid lightning, rain and other weather on the operation of equipment adversely affected. In addition, the power distribution cabinet and control cabinet integrated installation in the operation room, the protection level is not less than IP45; split installation, the power distribution cabinet and control cabinet should be used outdoor rain type, the material should be made of stainless steel, the protection level is not less than IP55; the power distribution cabinet and the control cabinet should be considered cooling and ventilation, temperature and humidity control, insect, rodent, and dust and other measures. Some formal sewage treatment equipment manufacturers will also control cabinet 3C certification.