Terminal blocks Klippon Connect

| Kategorie: Katalog  |

Vydal: Weidmüller, s.r.o.

Strana 687 z 838

Jak získat tento dokument?






Poznámky redaktora
In addition natural sources interference such lightning, there are also so-called coupling mechanisms. Use shielded cables The task electromagnetic screen close its internally generated electromagnetic field and prevent it from propagating create space free external fields. The useful signal influenced particular interference along the reference potential and thus deterioration occurs. This interrupts the earth loop for direct currents low-frequency currents. Coupling mechanisms: Galvanic coupling Coupling two circuits via common current path. Inductive (magnetic) coupling Coupling two circuits via alternating magnetic field (mainly the low-frequency range). Measures for EMC optimisation: The most frequently used and sensible countermeasures to improve EMC are the use twisted shielded cables. Here overview the different coupling mechanisms well some measures for EMC optimisation. capacitor is often connected the reference potential one side to reduce such interference. The interference expected determines the shield connection In order suppress electric fields, one-sided ground- ing the shield necessary.261 3029140000 B . Capacitive (electrical) coupling Coupling two circuits via alternating electric field (mainly the high-frequency range). Radiation coupling (electromagnetic coupling) Emission wave fields with electric and magnetic field strength. However, the shield connected both sides, ground loop occurs, which turn has disadvantages. B. this case, triaxial cables can help connecting the inner shield on one side and the outer shield both sides. Implementation shielding practice With the KLBUE, Weidmueller has developed versatile product designed reduce EMV plants and equipment..Application range Shielding and earthing Actions: Measures improve electromagnetic compatibility In order guarantee EMC, the interference mechanisms must first known. to improve machines. suppress alternating magnetic field, the shield must grounded both sides