Relay
Relays measure network quantities and issue breaker commands.
Types
DefiniteTimeRelay: Definite-time relay with optional lockout
InverseTimeRelay: Inverse-time overcurrent relay with optional lockout
Elements
ID[1] |
Short Name |
Long Name |
Model |
|---|---|---|---|
27 |
UV |
Undervoltage |
DefiniteTimeRelay |
50 |
OC |
Overcurrent |
DefiniteTimeRelay |
51 |
TOC |
Inverse-time overcurrent |
InverseTimeRelay |
59 |
OV |
Overvoltage |
DefiniteTimeRelay |
81O |
OF |
Overfrequency |
DefiniteTimeRelay |
81U |
UF |
Underfrequency |
DefiniteTimeRelay |