The paralleling device SIPROTEC 7VE85 is specifically designed for the synchronization of generators (power-plant units) with the power grid or synchronization of 2 electricity-supply systems. The 1.5-channel and 2-channel paralleling function is the main function of the SIPROTEC 7VE85. To achieve a high level of security and reliability, the software works with various monitoring functions. In addition, the most important hardware components are duplicated. The high level of reliability and flexible options to adapt to the equipment requirements allow a wide variety of applications.