WDH motor protector

The WDH motor protector provides measurement protection for the motor, avoiding production accidents caused by electric overload, locked rotor, overvoltage, undervoltage, light load, phase failure, three-phase imbalance, grounding and other faults, and maximizing the effective safety of equipment operation. A complete motor protector is a comprehensive device that collects, calculates, analyzes, monitors, alarms, and controls various operational information data during the operation of the motor.WDH motor protectorIn addition to conventional motor protection and control functions, it also directly implements protection and control for three-phase asynchronous motors or increased safety motors and supports feeder protection. Widely used in industries such as petroleum, chemical, power, metallurgy, coal, cement, textile, light industry, and municipal engineering to maintain and reduce costs of electric motors, providing scientific and effective protection, measurement, and control in production process control.
Main functional features:
Protection function:
Overload protection, phase failure protection, three-phase unbalance protection, locked rotor protection, undervoltage protection, overvoltage protection, leakage protection, ground fault protection, light load protection, no-load protection, short circuit protection.
Control function:
Direct starting, forward and reverse starting, star delta starting, direct bypass starting, autotransformer step-down starting, multi-party starting control.
Display monitoring:
Operating status, three-phase current, line voltage, leakage current, fault information, cumulative working time of the motor, number of faults, and other related information.
Setting function:
Rated current, protection current curve, starting time, three-phase imbalance, locked rotor ratio, leakage current value, overvoltage and undervoltage value, communication address, self starting time of the motor when the protector is powered on.
Remote transmission function:
Equipped with DC4-20mA standard analog output, no external power supply required.
Communication function:
A conventional protection control network of 256 protectors can be formed through RS485 serial communication with a computer. Remote data setting and display alarm, remote motor start, stop control, etc.
Memory function:
It can store the causes of three recent motor failures, and press the reset button to retrieve the fault code of the last motor occurrence. Press again to display the previous fault code.