Generator Controls

Remove the cover on the control box.

CONTROLS (DC Controlled Reactor Type)
1. Voltage droop rheostat. 2. Terminal strip. 3. Voltage level rheostat. 4. Saturable reactor coil and core assembly. 5. Terminal strip. 6. Blocking rectifier. 7. Full wave rectififer. 8. DC controlled reactor.

Remove the top screws and lower the panels as shown.

NOTE: On the compensating current transformer type lower the right panel only.

CONTROLS (Compensating Current Transformer Type)
2. Terminal strip. 3. Voltage level rheostat. 4. Saturable reactor coil and core assembly. 5. Terminal strip. 6. Blocking rectifier. 7. Full wave rectifier. 9. Voltage droop transformer. 10. Voltage droop control switch.

Inspect the parts shown for loose connections, corrosion, burned spots, and cracked or worn insulation and replace them if necessary.

CONNECTION DIAGRAM-For 120/208, 240-480, 2400 V. GENERATORS (Compensating Current Transformer Type)
A. Voltage droop transformer. B. Voltage droop control switch. C. Saturable reactor. D. Full wave rectifier. E. Stator (Alternator). F. Rotating field (Alternator). G. Armature (Exciter). H. Voltage level resistor (If Required). I. Blocking rectifier. J. Voltage lever rheostat. K. Shunt field (Exciter). L. Control field (Exciter).

The diagrams are furnished so that when it becomes necessary to disturb the control equipment, reconnection can be accomplished without difficulty.

CONNECTION DIAGRAM FOR 120-240 V. GENERATOR (Compensating Current Transformer Type)
A. Voltage droop transformer. B. Voltage droop control switch. C. Saturable reactor. D. Full wave rectifier. E. Stator (Alternator). F. Rotating field (Alternator). G. Armature (Exciter). H. Voltage level resistor (if used). I. Blocking rectifier. J. Voltage level rheostat. K. Shuntfield (Exciter). L. Control field (Exciter).

CONNECTION DIAGRAM (DC Controlled Reactor Type)
A. Saturable reactor. B. Voltage droop resistor (if used). C. DC controlled reactor. D. Voltage droop rheostat. E. Full wave rectifier. F. Voltage level resistor (if used). G. Blocking rectifier. H. Voltage level rheostat. I. Generator field. J. Exciter armature. K. Exciter field. L. Exciter control field. M. Generator armature.

TYPICAL CONTROL PANEL SHOWING TERMINAL STRIP NUMBERS (DC Controlled Reactor Type)

The numbers in the illustration are connection numbers which appear on the terminal strips.

TYPICAL CONTROL PANEL SHOWING TERMINAL STRIP NUMBERS (Compensating Current Transformer Type)

NOTE: For more information see the topic REGULATOR CONNECTIONS.