This standard specifies the general basic requirements for electromagnets, including characteristics, normal working conditions and installation conditions, structure, performance requirements, and test methods and inspection rules to verify that electromagnets meet these requirements. This standard is applicable to control circuits with single-phase AC 50Hz, 60Hz, voltage up to 380V or single-phase bridge full-wave rectification (without small wave device) DC voltage up to 220V, for use as solenoid valves to control some switch-type hydraulic valves. electromagnet. This standard does not apply to electromagnets for proportional valves.