Governing and system controls, namely, electronic control systems comprising of an electronic speed controller and actuator equipment for control of industrial engines for use in power generation; monitoring and protection devices for overspeed protection, namely, devices for use in electrical control systems in order to limit the maximum speed of industrial engines; interface modules between governor systems and accessories, namely, analog and digital signal conversion modules; analog and digital electronic governing controls, namely, for speed regulation of compression or spark-ignited engines, generator set control and monitoring units, namely, for engine and generator data protection and user control interface, all for use in electrical control systems for power generation equipment; speed sensing devices, namely, magnetic and variable reluctance type speed sensors for determining engine speed based on frequency of flywheel rotation for use in electrical control systems; electric relays and electrical annunciators for use in electrical control systems; load sharing modules and synchronizers, namely, analog and digital controllers for paralleling or synchronizing generators; automatic voltage regulators for AC voltage regulation on generator sets; installation kits comprised primarily of electrical components in the nature of electric contactors and voltage testers used to install the above mentioned governing system to the industrial engine; all for use in engine control systems, and all excluding electric current sensors, electrical power sensors, and power monitors, for use in monitoring operation of electrically powered devices and in managing power use in systems including multiple electrically powered devices