Yu Xin intelligent MCC system, based on summarizing the typical design experience on the MCC electrical system, in order to adapt to the electrical system of two times the trend of intelligent terminal equipment, a new generation of digital, strong anti-interference and intelligent MCC system according to the design features of the MCC loop is introduced.
Two, the main features:
The electrical properties and thermal properties of thermal relay and MCCB overload part can not simulate the load of MCC defects, based on saving thermal relay, simplified MCCB structure, can better protect electric equipment.
To solve the MCCB instantaneous release of long distance power supply end of the motor is the problem of insufficient sensitivity of protection, save the past in order to solve the problem with only the single-phase grounding protection means.
Can solve the interlock complex (such as physical interlocking, interlocking between the motor and motor level, temperature and so on), the scene in the premise of not using relay lap logic, can realize interlocking very complex, improve the efficiency of design.
To solve the problems caused due to two separate components of the MCC blind to the drawer unit, before the design can accurately planning MCC power distribution cabinet, to ensure that the two times of the design drawings and drawings schedule changes will not affect the planning and production of MCC cabinet, speed up the project progress, improve the production efficiency (this is especially true in bidding, bidding system, project).
For process automation systems (such as: DCS, SCADA, etc.) provide an excellent intelligent terminal, saving a lot of two cable and I/O equipment, in the foundation of the whole monitoring system to reduce the cost, improve the reliability of the system.
Design, miniaturization of the device can be installed on the 1/2MCC drawer unit.
The industrial field bus technology (PROFIBUS/MODBUS) can be quickly network and monitoring system, PLC communication, to realize the remote management function.
Dual network interface design, can realize the network redundancy, high reliability.
Design of wide temperature range, can be used in outdoor.
Strong anti-interference characteristics, the grade III electromagnetic interference test.
Three, the main function:
Protection function
Overheating protection
Grounding protection
Over current protection
Low voltage protection
Control function
Remote and local control function
Programmable input function
Monitoring function
Can display IA, IB, IC, I0, positive sequence, negative sequence, the fever and other physical quantities
The intelligent 4-20mA output interface monitoring the loop current
To monitor the contactor control circuit integrity
Communication function
The system can be realized through ProfiBus-DP fieldbus network
Through the RS485 communication interface, realize the system network with ModBus@RTU protocol
Four, the main technical data and specifications:
Type test in accordance with DL478-2001 standard, the main technical content as described in the following table:
Allow the environment / storage temperature of 25 ° C ~ +70 ° C / ? 40 ? C ~ +80 ° C
The humidity of the environment humidity maximum 95% allowed, no condensation surface
Altitude above sea level is 2000m
Protection grade IP53 in accordance with IEC529 ?
Seismic capacity can withstand the harsh level response, response and impact test for vibration level I
Fast transient 2kV
Pulse interference differential mode: 1 kV, common mode: 2.5 kV
Electrostatic discharge 8kV
Electromagnetic radiation interference 10V/m
The power input rated voltage of AC220V, DC220V, DC110V, 50HZ
Working range of 80% ~ 120%
The maximum power consumption of 6W, the minimum 2W
Power allowed outage time 200ms
The insulation resistance of not less than 500 M ?
Power frequency voltage withstand all terminals on the shell can withstand 2 kV AC, 1 minutes
The impact of voltage 5kV
