Description
20 HZ FREQUENCY GENERATOR FOR EARTH FAULT 100% PROTECTION THE 20HZ FREQUENCY GENERATOR CREATES A 20HZ SQUARE WAVE VOLTAGE WITH AN AMPLITUDE OF APPROX. 25V. THIS VOLTAGE IS CONNECTED VIA BANDPASS AND A LOAD RESISTOR TO THE STATOR CIRCUIT OF THE GENERATOR. THE FREQUENCY GENERATOR IS CONNECT. (THREE PHASE) TO THE VOLTAGE TRANSFORMER. ALTERNATIVELY A POWER SUPPLY VIA THE STATION BATTERY(100,220V DC) IS POSSIB. MAX. POWER CONSUMPT.APPROX.80VA MEASUREMENT VALUE PROCESSING WILL DONE BY 7UM515 IN 7XP20 CASE FOR
