JB/T 5791-2002 in English

Scope

This standard specifies the model, specifications, markings, normal working conditions, technical requirements, testing, packaging, transportation and storage of marine combination switches. This standard applies to the HZ9lO series marine combination switch, which is installed on ships for manual infrequent making or breaking of circuits and circuit switching in electrical circuits with AC 50Hz (or 60Hz), 380V and below, and DC 220V and below. For this purpose, it is generally not possible to directly start the motor and cut off the short-circuit current. Only 10A, 25A and other switches can control small-capacity motors. Note: AC 440V and 660V switches can be implemented with reference to this standard, and the relevant performance requirements are determined through consultation between the manufacturer and the user.