Power cabinet is designed by the requirement of electric connection: switch gear, measuring device,
SCPA (short circuit protection apparatus) and auxiliary devices are installed in a close or semi-closed cabinet or screen board. It should meet the needs of electric system’s normal operation, and is convenient to repair, without hurt to people and damage to equipment around. Normally, the power cabinet can be connected and disconnected manually or by automatic button. Under abnormal condition, the SCPA help cut off the power supply or ring the alarm. The measuring devices can display all the electric data in service, point out or give a signal when some data is abnormal, and some data can be adjusted.
PLC (Programmable Logic Controller) system: PLC series produces developed by German Siemens Company are widely used in metallurgy, chemical industry and printing industry in China. The PLC series products include LOGO, S7-200. S7-1200, S7-300, S7-400 and etc. S7 series of PLC productions can be divided into micro-type PLC (S7-200), small-scale type PLC (S7-300) and medium-to-large scale type PLC (S7-400), and they are of small cubage, fast speed, standardization, reliable running and network communication capacity.