6
Thermal overload switches are located in the coils of the
main transformers in the power supply. If one of these
components is overheated the appropriate switch will
open, causing the temperature light to go out and shutting
off power to the main contactor. When the overheated
component cools down the switch will close again and
allow operation of the system.
1.5 THEORY OF OPERATION (continued)
Figure 1-E System Block Diagram
Thermal Protection
GENERAL INFORMATION