The main functions of Siemens intelligent motor protector are as follows:
Protection functions: overload protection, open phase protection, three-phase imbalance protection, locked rotor protection, under voltage protection, over-voltage protection, leakage protection, ground fault protection, light load protection, no-load protection, short circuit protection.
Control functions: direct start, positive and negative start, star delta start, direct bypass start, autotransformer step-down start, multi-party start control.
Display and monitoring: operation status, three-phase current, line voltage, leakage current, fault information, accumulated working time of motor, fault times and other information.
Setting function: rated current, protection current curve, starting time, three-phase imbalance, locked rotor multiple, leakage current value, over and under voltage value, communication address, protector power on motor self starting time.
Remote transmission function: with dc4-20ma standard analog output, no external power supply is required.
Communication function: through RS485 serial communication and computer, 256 protectors can form a regular protection control network. Remote data setting and display alarm, remote motor start, stop control, etc.
Recall function: it can store the causes of ten recent motor faults, press reset key to take out the fault code of the last motor, and press again to display the previous one.
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