Additional functions are available in the relay default content but they are not preengineered to be part of the default configuration. The functions can be engineered into use.
One high-impedance or flux-balance based differential protection for motors MHZPDIF1 is offered. MHZPDIF provides the winding short-circuit and earth-fault protection for motors. Due to the capability to manage through-faults with a heavy current transformer (CT) saturation, the high-impedance or flux-balance principle has been commonly used for differential protection. MPDIF1 can alternatively be used for this function. For detailed information, see the technical manual.
One rotor earth-fault protection function MREFPTOC1 is offered. MREFPTOC is used to detect an earth fault in the rotor circuit of synchronous machines. For detailed information, see the technical manual.