DJB-YC series motor protector

DJB-YC series motor protectorIt has advanced fieldbus interfaces, and the motor intelligent protection monitor is a cost-effective motor protection and control device developed based on microprocessor technology in China. The microprocessor is responsible for motor protection and control, and supports feeder protection to complete motor operation, self diagnosis, and communication with the upper computer.DJB-YC series motor protectorThe measurement protection provided for the motor avoids production accidents caused by possible faults such as motor overload, locked rotor, overvoltage, undervoltage, light load, phase failure, three-phase imbalance, grounding, etc., and maximizes the effectiveness and safety of equipment operation,DJB-YC series motor protectorAdopting RS485 communication interface design ensures communication with the upper computer PLC、DCS、 Supports fast and reliable custom communication protocols, while also being able to quickly respond to real-time queries and perform corresponding operations from the host computer. Easy to use, safe and reliable.
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, and fault information display
Fieldbus function
DJB-YC has an RS-485 remote communication interface that supports multi-party protocols and bus protocols, making it convenient to form a network system with PLC, DCS, and backend machines. Real time control, monitoring of operational status parameters, and historical data queries of on-site equipment are carried out through the backend machine. DJB-Y's monitoring and recording of motor operation status and fault causes greatly facilitates the development of motor maintenance plans and reduces equipment maintenance costs.
Technical Parameter
1. Overcurrent protection feature: The protection current can be set
2. Phase failure protection (three-phase imbalance): When the current imbalance value of any phase reaches the set value, the monitor will activate within 4 seconds
3. Locking protection: When the current is greater than 5 times the set value during operation, the monitor will activate within 2 seconds
4. Undervoltage protection: When the operating voltage is less than the undervoltage setting value, the monitor will activate within 15 seconds
5. Overvoltage protection: When the operating voltage exceeds the overvoltage setting value, the monitor will activate within 15 seconds
6. Leakage (grounding) protection: When the leakage current exceeds the set value, the monitor will activate within 3 seconds
7. Short circuit protection: When any phase current reaches 8Ie, the monitor will activate within 2 seconds
8. Test scope: 1 A. B, C three-phase current: 0-999A
2. Voltage: AC175-450V
9. Power supply voltage: 220V, 380V ± 15%, 50Hz ± 2%
10. Electricity consumption: ≤ 3VA
11. Output relay contact capacity: 250VAC/7A
12. Current display error: 1.5%

Main characteristics
1. Equipped with overcurrent inverse time delay protection function;
2. It has a startup delay function to avoid high startup currents and is separated from overcurrent action time;
3. Equipped with fault memory, alarm, and action value retention functions;
4. Equipped with digital display function, it can display the working voltage, current, leakage current, and * * set protection value of A, B, and C phases;
5. Equipped with 4-20mA analog output interface;
6. Equipped with RS485 remote communication interface. Remote data setting, control, query, etc.