ABB PST Installation And Maintenance Manual page 171

Figure 3: Circuit diagram PSTB370...PSTB1050
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Chapter 12 - Diagrams
12:3 Circuit Inline diagram PSTB370...PSTB1050
SEE CHAPTER 3
1
FOR ACROSS THE
LINE (AC3) RATINGS
1
Terminal 3 is a functional ground, it is not a protective
ground. It shall be connected to the mounting plate.
171
AC 1006.9 - 5/03