48Fig.23. Principle of timer operation11. CURRENT TRANSFORMER INPUTAfter connecting the current transformer (CT-94-1 type),the measurement and display of the current flowing through the loadsteered by the output 1, is possible.The first output must be of relay or voltage 0/5 V type. For the currentcounting, the minimal time of the output switching on must be at least200 ms.The transformer work range is equal 0 to 50 A.The heater current is displayed with the mark „a” in the first position.