Description: In a parallel system ideally all the UPS are requested to contribute to the load with the same amount of current, i.e. with no current share. The current share occurs when an UPS exchanges some current with another UPS, so that this current component doesn't feed the load. The share part of the UPS current represents an undesired UPS loading, and therefore it should be minimized. If the share current is too high, the UPS results overloaded and in some conditions (i.e. very high load) the system could turn on bypass reducing dramatically the global system reliability. PMAD detects the amount of share currents in a parallel system, generating an alarm if this value is above a parameter-based threshold. Single UPS systems don't have this feature, NA will be provided.(*)