IEEE Std Device Numbers Flashcards
1
Q
21
A
distance relay
2
Q
25
A
synchronizing relay
3
Q
27
A
undervoltage relay
4
Q
32
A
directional power relay
5
Q
30
A
field relay
6
Q
50
A
instantaneous overcurrent relay
7
Q
51
A
AC time overcurrent relay
8
Q
59
A
overvoltage relay
9
Q
67
A
AC directional overcurrent relay
10
Q
74
A
alarm relay
11
Q
81
A
frequency relay
12
Q
83
A
transfer relay
13
Q
86
A
lockout relay
14
Q
87
A
differential protective relay
15
Q
distance relay
A
21
