Device numbers Flashcards
(35 cards)
1
Q
3
A
Checking or interlocking relay
2
Q
4
A
Master contactor
3
Q
12
A
Overspeed device
4
Q
13
A
Synchronous-speed device
5
Q
14
A
Under-speed device
6
Q
20
A
Electrically operated valve
7
Q
21
A
Distance relay
8
Q
26
A
Apparatus thermal device
9
Q
27
A
Undervoltage relay
10
Q
33
A
Position switch
11
Q
38
A
Bearing protective device
12
Q
40
A
Field relay
13
Q
41
A
Field circuit breaker
14
Q
43
A
Manual transfer/selector switch
15
Q
46
A
Reverse phase or phase balance current relay
16
Q
48
A
Incomplete sequence relay
17
Q
49
A
Machine or transformer thermal relay
18
Q
50
A
Instantaneous overcurrent relay
19
Q
51
A
AC time overcurrent relay
20
Q
52
A
AC circuit breaker
21
Q
55
A
Power factor relay
22
Q
56
A
Field application relay
23
Q
59
A
Overvoltage relay
24
Q
62
A
Time-delay stopping or opening relay
25
63
Pressure switch
26
64
Ground protective relay
27
70
Rheostat
28
72
DC circuit breaker
29
80
Flow switch
30
81
Frequency relay
31
86
Locking out relay
32
87
Differential protective relay
33
89
Line switch
34
90
Regulating device
35
94
Tripping or trip-free relay
