The phase discontinuity / single phasing protection for motor function PDNSPTOC is used for detecting unbalance situations caused by broken conductors.
The function starts and operates when the unbalance current I 2/I 1 exceeds the set limit. To prevent faulty operation at least one phase current needs to be above the minimum level. PDNSPTOC operates with DT characteristic.
The function contains a blocking functionality. It is possible to block the function output, timer or the function itself.