HDJB series motor protector

HDJB series motor protectorIt adopts advanced electronic circuits and new brick technology design, with comprehensive motor protection Compared to similar products, the use of ordinary microcontroller technology has been upgraded to a higher level It has the advantages of simple structure, reliable action, high accuracy, strong anti-interference ability, stable working performance, and power saving It is convenient to use RS485 communication interface to form a network system with PC and other devices, or connect to DCS system through standard 4-20mA analog output to monitor and protect the system operation status
Index
The HDJB-A integral microcomputer monitoring motor protector is suitable for motor monitoring, protection, and on-site installation display, with a fixed phase current 4-20mA signal output.
The HDJB-B split type microcomputer monitoring motor protector is suitable for motor monitoring, protection, and on-site installation display. It consists of a main unit and a current transformer, with a distance of ≤ 5m between the main unit and the current sensor. It has a fixed phase current of 4-20mA signal output. Transformer differential protection device
HDJB-C type integral microcomputer monitoring motor protector, in addition to the functions of HDJB-A type, also has RS485 communication interface, which can achieve remote communication with a communication distance of ≤ 1200m.
The HDJB-D split type microcomputer monitoring motor protector not only has the functions of HDJB-B type, but also has RS485 communication interface, which can achieve remote communication with a communication distance of ≤ 1200m.
The HDJB-S microcomputer monitoring motor protector is specifically designed for increased safety motor protection, which can achieve functions such as motor monitoring, monitoring, protection, and display. It also has RS485 communication interface and 4-20mA current signal output, and can achieve remote communication monitoring settings.
The split type is composed of a main unit (display part) and a current transformer independently. The main unit is installed (embedded) on the panel for easy operation and viewing, and the current sensor is installed below the contactor The integrated display part and current transformer are installed together under the contactor

main features：
1. The current transformer card test structure does not require disassembly of the main circuit during installation.
2. The whole machine has a modular structure, and sensors and the host can be combined into one or installed separately.
3. High definition wide temperature LCD display with background light. Chinese characters on LCD display, user-friendly human-machine interface.
4. The application of microcomputers and digital processing technology results in high measurement accuracy, good linearity, accurate and reliable fault resolution, strong anti-interference ability of the whole machine, and diagnostic function. Microcomputer protection and measurement device
5. Using E2PROM storage technology to achieve parameter electrical setting, the set parameters are still saved after power failure.
6. Configure RS458 serial digital interface for easy communication with the upper computer (PC).
7. One machine is versatile and can replace ammeters, voltmeters, thermal relays, current transformers, time relays, and leakage relays.
major function：
Protection functions: overcurrent, undercurrent, locked rotor, three-phase current imbalance, phase failure, overvoltage, undervoltage, leakage, short circuit and other fault protection.
Setting function: It is possible to set the rated current value, starting time, overvoltage value, undervoltage value, undercurrent value, overcurrent action time, multiple of locked rotor current to rated current, leakage current value, communication address number, three-phase current imbalance ratio, and rated current ratio of 400A and 600A specifications of economical harmonic meters and current transformers on site.