1
Q
21
A
Distance relay
2
Q
25
A
Synchronizing or synchronism-check device
3
Q
27
A
UnderVoltage relay
4
Q
30
A
Annunciator relay
5
Q
43
A
Manual transfer or selector device
6
Q
32
A
Directional power relay
7
Q
40
A
Field (over/under excitation) relay
8
Q
50
A
Instantaneous overcurrent
9
Q
51
A
AC inverse time overcurrent relay
10
Q
52
A
AC circuit breaker
11
Q
59
A
Over-voltage relay
12
Q
62
A
Time delay stopping or opening relay
13
Q
63
A
Pressure switch
14
Q
64
A
Ground detector relay
15
Q
67
A
AC directional overcurrent relay
16
Q
74
A
Alarm relay
17
Q
79
A
AC reclosing relay
18
Q
81
A
Frequency relay
19
Q
83
A
Automatic selective control or transfer relay
20
Q
85
A
Pilot communications, control, or transfer relay
21
Q
86
A
Lockout relay
22
Q
87
A
Differential protective relay
23
Q
89
A
Line switch relay
24
Q
94
A
Tripping or trip-free relay
C Zero
flashcards
Decks in class (1)
# Cards
