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figure 8-22 Schematic of the two position load switch transformer
8.14.2 Four Position Load Switch
The four position load switch arrangement shown in below.
Consist of 4 positions, gang operated, internal oil switches. It may be used for sectionalize
and loop connections, such as selection of power sources in a loop feed primary distribution
system, isolating faulted cables or transformers, or isolating transformer when changing it
out or during maintenance. Six high voltage bushings are furnished with a typical application.
Three bushings are identified as A source and three as B source.
figure 8-23 Position switch working schema
Position switch working schema
The detail working schema of the four position switch is described as below.
A and B is for the loop feeders, C is connected to the transformer.
User Manual 8 Components and Accessories
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