Standard Protection Functions

What Is in This Section?

This section contains the following topics:

oLong-Time Overcurrent Protection (L or ANSI 49RMS/51)

oShort-Time Overcurrent Protection (S or ANSI 50TD/51)

oInstantaneous Overcurrent Protection (I or ANSI 50)

oGround-Fault Protection (G or ANSI 50N-TD/51N)

oEarth-Leakage Protection (ANSI 50G-TD)

oNeutral Protection

oDual Settings

oZone Selective Interlocking (ZSI)