7XT

Bandpass filter 20 Hz in case 7XP20.

CONTROLLING DEVICE FOR ROTOR-EARTH-FAULT PROTECT. 0.5 TO 4HZ IN 7XP20, PANEL FLUSH MOUNTING

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...

Controlling device for rotor-earth-fault protection (0,5 ti 4 Hz) 7XT71 in 7XP20

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...

20 HZ BANDPASS FOR STATOR EARTH FAULT 100% PROTECTION THE 20HZ BANDPASS FILTERS THE SQUARE-WAVE VOLTAGE AND TRANS- FORMS IT TO SINUS CURVES WITH FREQUENCIES OF APPROX. 20HZ. THE INTERNAL RESISTANCE IS THEN EQUAL TO APPROX. 8 OHM. AT THE SAME TIME IT PROJECTS THE 20HZ FREQUENCY GENERATOR IN CASE OF EARTH FAULT WITH FULL DISPLACE- MENT VOLTAGE. AT RATED...

20 HZ BANDPASS FOR STATOR EARTH FAULT 100% PROTECTION THE 20HZ BANDPASS FILTERS THE SQUARE-WAVE VOLTAGE AND TRANS- FORMS IT TO SINUS CURVES WITH FREQUENCIES OF APPROX. 20HZ. THE INTERNAL RESISTANCE IS THEN EQUAL TO APPROX. 8 OHM. AT THE SAME TIME IT PROJECTS THE 20HZ FREQUENCY GENERATOR IN CASE OF EARTH FAULT WITH FULL DISPLACE- MENT VOLTAGE. AT RATED...

20 Hz generator in case 7XP20.