CMV Measurement

To guarantee the safe and stable operation of an SMA Commercial Storage Solution storage system, the CMV requirements must be met (CMV: common-mode voltage, voltage between DC pole and ground). In storage systems with more than four Sunny Tripower Storage X inverters, a CMV measurement must be performed and the results recorded in the commissioning report (see system registration at www.SMA-Solar.com).

Evidence of the CMV requirements being met takes the form of a measurement in the entire system following installation during operation with the power electronics connected. The CMV measurement may only be performed by electrically qualified persons in compliance with the safety rules and in cooperation with Service. You must therefore contact Service to make an appointment if SMA Commercial Storage Solution storage systems with more than four Sunny Tripower Storage X inverters are to be commissioned.