JDB-HA series motor comprehensive protectorIt is a comprehensive device that collects, calculates, analyzes, monitors, alarms, and controls various operational information data during the operation of an electric motor. The device achieves timely and accurate protection through fault alarm, protection action (protection trip), and setting of action delay time to ensure production safety.JDB-HA series motor comprehensive protectorIt is also possible to achieve real-time monitoring of the detailed operation status of the motor on the upper computer through data information communication, and provide management information through computer data processing. Before a major malfunction of the equipment occurs, an over limit alarm can promptly remind management personnel to handle it, avoiding unnecessary shutdowns that may affect normal production and maximizing the effectiveness of equipment operation and control. When the operating parameters of the motor reach the preset warning value, the protection device only gives a warning and does not trigger tripping; But when the limit value exceeds the preset trip value, the protection device enters the trip trigger delay. If the device resumes normal operation within the preset tripping delay time, the tripping execution will be canceled; If the delay time limit is exceeded, the protection device will send a trip signal, drive the actuator to operate, disconnect the power supply, and stop the motor from running. At the same time as the motor control device realizes various protection functions, various protection information is also generated by the device and sent to the computer management system through the communication interface.
2、 Main functional features:
Protection function:
Overload protection, phase failure protection, three-phase unbalance protection, locked rotor 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, start-up time, three-phase imbalance, locked rotor ratio, leakage current value, communication address.
Remote transmission function:
Equipped with D-20mA standard analog output, no external power supply is 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
Move, stop control, etc.
Memory function:
3、 Main technical parameters:
1. Inverse time limit protection: This protector has overcurrent inverse time limit delay protection function.
2. Light load protection: When the current value is less than the light load protection set value, the monitor will activate within 30 seconds.
3. Overcurrent protection: The protection current can be set arbitrarily, and when the current value is greater than the set value, it will act according to the action characteristic curve.
4. Phase failure protection: When the motor power supply is disconnected (the three-phase current imbalance value during production can be set to 60% according to user requirements), the monitor will operate within 3 seconds.
5. Locking protection: When the operating current of the motor is greater than 5 times the set value, the protector will activate within 2 seconds.
6. Undervoltage protection: When the working voltage is lower than 15% of the rated voltage, the protector will activate within 6 seconds.
7. Overvoltage protection: When the operating voltage is 15% higher than the rated voltage, the protector will activate within 6 seconds.
8. Leakage (grounding) protection: When the leakage current exceeds the set value, the monitor will activate within 3 seconds. 9. Short circuit protection: When any phase current reaches 8Ie, the protector will activate within 2 seconds.
10. Start delay time: adjustable from 1-999 seconds.
11. Star delta conversion time: The star delta conversion time is less than the startup delay time by 3 seconds.
12. Whole machine power consumption: ≤ 3VA.
13. Output relay contact capacity: 25OVAC 7A.
14. Current display error: ≤ 1.5%.
15. Reset time: ≤ 2 seconds.
16. Electric lifespan greater than 10 times, with startup delay function: to avoid separating the action time of starting high current and overcurrent.
17. Equipped with RS485 remote communication interface or USB interface. It has remote data setting, control, query, etc. Form a network protection monitoring system with the upper computer