![transformer protection relay](http://ashidaelectronics.com/wp-content/uploads/2016/03/A21T_1.jpg)
Model | Functional Details | Cabinet Style |
A21T | Transformer Protection Relay | CSE |
ANSI Code | Description |
46 | Negative Phase Sequence Protection |
49 | Thermal Overload Protection |
50 | Instantaneous/Definite time phase over current Protection |
51 | Inverse Time Phase Over current Protection |
50N | Instantaneous/Definite Time Ground Over current Protection |
51N | Inverse Time Ground Over current Protection |
64G | High Impedance Restricted Earth Fault Protection |
50BF | Breaker Failure |
86 | Lockout (Trip command) |
87T | Two Winding Phase Differential Protection |