Motor integrated protection for rated frequency 50Hz, rated voltage to 660V circuit in a three-phase motor phase failure occurs during operation, overcurrent fault, it acts to protect the motor.
 

I. Overview
   The protector has full-featured, high sensitivity, reliability, small size and ease of use. The protection is for the three-phase motor is running due to broken phase (phase) overvoltage and overcurrent caused by burning and other reasons the design of protection of new products. Has excellent anti-time characteristics, it features running lights, phase fault indicator and overload warning light, easy installation, smart and intuitive, rapid troubleshooting, which has a high value.
Second, the main technical parameters
    1. Working voltage: 380 ± 10% 50Hz;
    2. Minimum signal wire hole current: off-phase current transformer ≥3A, overload current sensor ≥6A (in phase);
    3. Action time: off phase <2S. Overload 3 ~ 120S (relative);
    4. Output control contact form: normally closed, current 1A;
    5. Ambient temperature: -5 ~ + 40;
    6. Power: ≤2VA;
    7. Scope: JD-5B; 2 ~ 200A; JD-6: 63 ~ 400A;
    8. Special features: sound an alarm.
Third, installation and commissioning
    Then press the conventional part of the AC contactor and start the motor running until after all, stop the motor.
    Protector underneath fixed exchange contactor is appropriate, pass through the three-phase power protection white threading hole in and were connected to the stationary contacts AC contactor KM2, KM3, KM4.
    The protection of output terminals: 1,2 is the protector of the power supply, 3 and 4 are output protection normally closed contact (string into the AC contactor should be self-locking loop KM) Figure 1, Figure 2.
    The two surface protectors knob clockwise in the end.
    After checking the correct line, the starter motor, the motor can operate normally while running on a protected surface indicator light, then the current adjustment knob slowly counterclockwise rotating carefully. Until after the overload warning lights flashing, and then return a little clockwise, watch the indicator in a minute without flashing a critical state. Until then the delay knob (longer appropriate) on the scale greater than the start delay. Starter motor again until normal operation after warning light does not shine, then manually make the motor overload, then the warning light that is shining, the entire commissioning process is completed