Function The MCS025 module checks the voltages upstream and downstream of a circuit breaker to ensure safe closing (ANSI 25). It checks the differences in amplitude, frequency and phase between the two measured voltages, taking into account dead line/busbar conditions. Three relay outputs may be used to send the close enable to several Sepam series 80 units. The circuit-breaker control function of each Sepam series 80 unit will take this close enable into account. The settings for the synchro-check function and the measurements carried out by the module may be accessed by the SFT2841 setting and operating software, similar to the other settings and measurements for the Sepam series 80. The MCS025 module is supplied ready for operation with: b the CCA620 connector for connection of the relay outputs and the power supply b the CCT640 connector for voltage connection b the CCA785 cord for connection between the module and the Sepam series 80 base unit.