The DPM-30A series microcomputer motor protection device is suitable for the protection and measurement of medium and high voltage asynchronous motors with voltage levels of 35kV and below. Having three sections

Fixed time and inverse time overcurrent protection, overload, two-stage negative sequence current, low voltage, overvoltage, zero sequence current, 4-channel non electric quantity protection, etc.

DPM-31A microcomputer motor protection is used for the protection of small and medium-sized asynchronous motors below 2000kW;

DPM-32A microcomputer motor protection is used for the protection of large asynchronous motors of 2000kW and above, with motor differential protection.

DPM-33A microcomputer motor protection is used for the protection of synchronous motors, with differential protection, out of step protection, and power protection for synchronous motors.