Intelligent MCC control protection management device

1. Overview:
Yuxin Intelligent MCC Control, Protection and Management Device is a new generation of digital and strong anti-interference intelligent MCC control, protection and management device designed based on the characteristics of MCC circuits, in order to adapt to the trend of intelligent terminal of secondary equipment in electrical systems and summarize the typical design experience of MCC electrical systems in China.
2、 Main features:
Solved the shortcomings of thermal relays and MCCB overload parts that cannot simulate the electrical and thermal characteristics of MCC loads. On the basis of saving thermal relays and simplifying MCCB construction, it can better protect electrical equipment.
Solved the problem of insufficient sensitivity of MCCB instantaneous release for single-phase grounding protection of long-distance power supply motors, eliminating the previous method of separately installing single-phase grounding protection for this problem.
It can solve complex process interlocks (such as interlocks between motors, interlocks between motors and physical quantities such as liquid level and temperature), and can achieve very complex interlocks on site without using relay overlap logic, improving design efficiency.
Solved the problem of blind enlargement of MCC drawer units due to secondary separation of components. The MCC distribution cabinet can be accurately planned before design, ensuring that the design progress of secondary drawings and drawing modifications will not affect the planning and production of MCC cabinets, accelerating project progress and improving production efficiency (this is particularly applicable to projects under bidding and tendering systems).
Provided an excellent intelligent terminal for process automation systems (such as DCS, SCADA, etc.), saving a lot of secondary cables and I/O devices, and improving the reliability of system operation while reducing the cost of the entire monitoring system.
The device is designed for miniaturization and can be installed in 1/2MCC drawer units.
By adopting industrial fieldbus technology (PROFIBUS/MODBUS), it is possible to quickly communicate and network with monitoring systems and PLCs, achieving remote advanced management functions.
Dual network interface design enables network redundancy and high reliability.
Designed with a wide temperature range, it can be applied outdoors.
Strong anti-interference characteristics, passed the Level III electromagnetic interference test.
3、 Main functions:
protection function
overheat protection
grounding protection
overcurrent protection
low voltage protection
control function
Remote and local control functions
Programmable input function
monitoring function
It can display physical quantities such as IA, IB, IC, I0, positive sequence, negative sequence, and heating status on site
The current of this circuit can be monitored through an intelligent 4-20mA output interface
Can monitor the wiring integrity of the contactor control circuit
communication function
System networking can be achieved through ProfiBus DP industrial fieldbus
It can be accessed through the RS485 communication interface ModBus@RTU Communication protocol implementation for system networking
4、 Main technical data and specifications:
The type test complies with the provisions of DL478-2001, and the main technical contents are shown in the following table:
Allowable environment/storage temperature 25 ° C~+70 ° C/-40 ° C~+80 ° C
The maximum allowable environmental humidity is 95%, and there is no condensation on the surface
The altitude can reach 2000m
The protection level complies with IEC529-IP53
The seismic resistance can withstand vibration response, impact response, and collision tests with a severity level of I

Fast transient 2kV
Pulse group interference differential mode: 1 kV, common mode: 2.5 kV
Electrostatic discharge 8kV
Radiated electromagnetic field interference 10V/m

Power input rated voltage AC220V, DC220V, DC110V, 50HZ
Scope of work: 80%~120%
Power consumption maximum 6W, minimum 2W
The power supply allows an interruption time of 200ms

The insulation resistance shall not be less than 500 M Ω
All terminals of the power frequency withstand voltage can withstand AC 2 kV to the casing for 1 minute
Impulse voltage 5kV