Relay and Metering Flashcards
1
Q
86
A
Lockout relay
2
Q
27
A
Undervoltage relay
3
Q
50BF
A
Breaker failure
4
Q
52
A
AC circuit breaker
5
Q
63
A
Pressure switch
6
Q
86
A
Lockout relay
7
Q
87
A
Differential relay
8
Q
89
A
Line switch
9
Q
94
A
Tripping relay
10
Q
21
A
Distance relay (impedance)
11
Q
26
A
Thermal relay ?
12
Q
49
A
Thermal relay?
13
Q
50
A
Instantaneous over current relay
14
Q
51
A
Inverse time over current relay
15
Q
71
A
Liquid level switch
16
Q
86TG
A
Tagging relay
17
Q
87B
A
Bus differential relay
18
Q
32
A
Reverse power relay
19
Q
43
A
Local/remote switch
20
Q
59
A
Overvoltage relay
21
Q
59G
A
Line-to-ground fault relay
22
Q
62
A
Timer relay
23
Q
64
A
Ground detection relay
24
Q
67
A
Directional AC voltage
25
Q
74
A
Summary alarm
26
Q
81 O/U
A
Frequency relay: over/under
27
Q
87T
A
Transformer differential relay
28
Q
201
A
Close relay
29
Q
294
A
Open relay
