Description
ABB PM864A 3BSE018162R1 Silicon Controlled Modules
ABB PM864A 3BSE018162R1 in the selection of equipment, first of all, we should choose products with high interference immunity, which includes electromagnetic compatibility, especially the ability to resist external interference, such as the use of floating-ground technology, isolation performance of the PLC system; second should also be aware of the manufacturer to give the anti-jamming indicators, such as common mode rejection ratio, differential mode rejection ratio, allowing how much electric field strength and how much magnetic field strength in the environment; the other is by examining its application performance in similar work. Secondly, we should also understand the manufacturer’s anti-interference indicators, such as common mode rejection ratio, differential mode rejection ratio, voltage resistance, allowed to work in the environment of how large the electric field strength and magnetic field strength of high frequency; in addition to relying on the examination of its application performance in similar work.
ABB PM864A 3BSE018162R1 in the choice of foreign imports to note that China is using 220V high internal resistance grid system, while Europe and the United States is 110V low internal resistance grid. Because of China’s power grid internal resistance, zero potential drift, ground potential changes, industrial enterprises on-site electromagnetic interference at least four times higher than in Europe and the United States, the system requires more anti-interference performance. PLC products can work properly in foreign countries in the domestic industry will not necessarily be able to operate reliably, which should be used in the adoption of foreign products, according to China’s standards (GB/T13926) reasonable choice.
ABB PM864A 3BSE018162R11 main consideration from the outside of the system of several suppression measures, including: PLC system and external leads for shielding to prevent space radiation electromagnetic interference; external leads for isolation, filtering, especially power cables should be layered arrangement to prevent the introduction of conductive electromagnetic interference through the external leads; the correct design of the grounding point and grounding devices, perfect grounding system. In addition, software must be used to further improve the safety and reliability of the system.