IEEE C37.015-2009

This application guide applies to ac high-voltage circuit breakers rated for shunt reactor switching. The guide covers the specific cases of switching directly grounded shunt reactors, ungrounded shunt reactors, and shunt reactors grounded through a neutral reactor. Directly grounded reactors are common on systems having a voltage of 60 kV and above, whereas ungrounded reactors are commonly applied on systems having a voltage below 60 kV. Schemes where the reactor is grounded through a neutral reactor are usually applied only on systems having a voltage of 60 kV and above. Whereas this application guide is directed toward circuit breakers, it is recognized and accepted that other switching devices such as high-voltage load break switches and circuit switchers are capable of shunt reactor switching and this guide may be applied as appropriate.