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Intelligent Motor Control Centre for Paper Mills
An example of a paper mill has one 6.3kv substation. The pulp preparation process and the papermaking facility employ 400V and 690V low-voltage motors. The finishing process uses 400V motors, and there are another 47 high-voltage motors requiring protection devices. In addition, the mill uses 2 sets of Resonance Eliminating Devices and 571 sets of low-voltage motors. 80 sets of motors require circuits controlled by frequency converter. There are another 66 general outgoing circuits, 32 general motor circuits (without CT) and 11 low-voltage incoming circuits requiring monitoring. In such a large facility, it is of prime importance to monitor the complete electrical system as well as to provide protection and control over low-voltage motors.
400V, 690V low-voltage motors ¡ñ PMC-550 Series Low-voltage Motor Protection Relays
6.3kv protection, monitoring and control
¡ñ PMC-651X Series Protection Devices
¡ñ PMC-530/53 Series Digital Multi-function Power Meters
Software System
¡ñ PecStar Integrated Automation System
¡ñ PMC series low-voltage protection relays are all equipped with communications port and support automatic monitoring. They also provide the functions of maintenance management, status monitoring, remote control ability and communications with 3rd party DCS systems.
¡ñ PMC series monitoring and control devices provide advanced features such as transient waveform recording, incident pre-alarming and fault alarming which enhance the customers' ability to analyze and locate faults within the shortest possible time, hence reducing stress for the operators.
¡ñ CET's MotorCC Solution features high-accuracy watt-hour metering, alarm management, historical events query, operational optimization, fault alarming, analysis and location and enables the customers to reduce the number of motor failures, achieve significant cost reduction, improve production efficiency and therefore enhance competitiveness.
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