Page 78
SECTION 4.2
OPERATIONAL ANALYSIS
PART 4
DC CONTROL
INITIAL DROPOUT OF
UTILITY SOURCE VOLTAGE
Refer to Figure 2, above. Should a "Utility" power
source failure occur, circuit condition may be briefly
described as follows:
• The circuit board constantly senses for an
acceptable "Utility" source voltage, via transfer
switch fuses F1/F2, transfer switch "Utility 1/Utility
2" terminals, connected wiring, control panel "Utility
1/Utility 2" terminals, the sensing transformer (TX),
and Wires 224/225.
DUAL SEC.
ALT. EXCITATIO
E 7.
Comentarios a estos manuales