| Novar 1312 reactive power controllers or governors are designed for compensation systems where conventional governors with relay outputs to control circuit breakers do not meet requirements. They are especially systems where rapid frequent changes in reactive power take place (elevators, welding machines, etc.), but also for instance systems with strict requirements on electromagnetic noise suppression and power quality. The governor has semiconductor switches to control thyristor switching modules and fast processor core that allows up to 10 control interventions in one second. Together with KATKA thyristor switching modules, it provides optimum control of reactive power compensation. The instrument features precise voltage and current measurement circuits and digital processing of measurement values achieves high accuracy of rendering voltage, current, and power factor values. fFt algorithm is used to render harmonic components. This provides precise measurement and control even in conditions of harmonic distortion. An inbuilt thermal sensor provides temperature measurement inside the switchboard cabinet. The two highest outputs can be used to switch on and off cooling or heating. The governor allows building combined compensation systems utilizing both thyristor switching modules and circuit breakers. The governor can be purchased with an optional galvanically isolated RS-232 or rS-485 communication port. It is thus possible to monitor all measurement values and set instrument's parameters using a remote computer. |