EMCheck® MWMZ II

From the perspective of automation technology the function of the equipotential bonding is not put into question because the functionality is presumed and the points of contact are mostly seen in the low voltage system. However, in the meantime it was exposed that a secure and solid working communication network, including the bus system, is related with the function of the equipotential bonding. Straying currents and currents of higher frequency which are often caused by frequency converters, mostly use the shield of our data cable as return current flow instead of the intended equipotential bonding system.

Just relying on gut feeling, or making intuitive statements about the quality of existing shielding and earthing measures is rarely a good idea. The only way to ensure good equipotential bonding is proof by measurement. The mesh resistance measuring clamp EMCheck^® MWMZ II is the right tool for this purpose. In this way, you meet the requirements of DIN EN 50310, which is cited in the new guideline “Functional potential equalization and shielding of PROFIBUS and PROFINET” from the World Association PROFIBUS & PROFINET International (PI).