Electrical Power System Device Numbers and Functions Flashcards
1
Q
12 ⭐
A
OVER-SPEED DEVICE
2
Q
13
A
SYNCHRONOUS-SPEED DEVICE
3
Q
14 ⭐
A
UNDER-SPEED DEVICE
4
Q
15
A
SPEED OR FREQUENCY MATCHING DEVICE
5
Q
21 ⭐
A
DISTANCE RELAY
6
Q
23
A
TEMPERATURE CONTROL DEVICE
7
Q
25
A
ELECTRICAL SYNCHRONISM OR SYNC CHECK DEVICE
8
Q
26 ⭐
A
APPARATUS THERMAL DEVICE (ARMORTISSEUR)
9
Q
27 ⭐
A
UNDERVOLATGE RELAY
10
Q
30
A
ANNUNCIATOR RELAY
11
Q
37
A
UNDERCURRENT OR UNDERPOWER RELAY
12
Q
38 ⭐
A
BEARING PROTECTIVE (TEMP) DEVICE
13
Q
40 ⭐
A
FIELD RELAY
14
Q
41 ⭐
A
FIELD CIRCUIT BREAKER DEVICE
15
Q
43 ⭐
A
MANUAL TRANSFER OR SELECTOR DEVICE
16
Q
46⭐
A
NEGATIVE PHASE SEQUENCE
17
Q
48⭐
A
INCOMPLETE SEQUENCE RELAY
18
Q
49⭐
A
MACHINE OR XFMR THERMAL RELAY
19
Q
50⭐
A
INSTANTANEOUS OVERCURRENT RELAY
20
Q
51⭐
A
AC TIME OVERCURRENT RELAY
21
Q
52⭐
A
AC CIRCUIT BREAKER DEVICE
22
Q
55⭐
A
POWER FACTOR RELAY
23
Q
56
A
FIELD APPLICATION RELAY
24
Q
57
A
SHORT CIRCUITING OR GROUNDING DEVICE
25
47
PHASE-SEQUENCE VOLTAGE RELAY
26
59⭐
OVERVOLTAGE RELAY
27
60
VOLTAGE OR CURRENT BALANCE RELAY
28
63⭐
PRESSURE SWITCH
29
64⭐
GROUND PROTECTIVE RELAY
30
69
PERMISSIVE CONTROL DEVICE
31
71⭐
LEVEL SWITCH
32
72⭐
DC CIRCUIT BREAKER
33
74
ALARM RELAY
34
80⭐
FLOW SWITCH
35
82⭐
DC RECLOSING RELAY
36
86⭐
LOCKOUT RELAY
37
87⭐
DIFFERENTIAL PROTECTIVE RELAY
38
94⭐
TRIPPING RELAY
39
89⭐
LINE SWITCH (DISCONNECT)
40
81⭐
FREQUENCY RELAY
41
79
AC RECLOSING RELAY
42
75
POSITION CHANGING MECHANISM
43
39
MECHANICAL CONDITION MONITOR (VIBRATION)
44
33⭐
POSITION SWITCH
45
22
EQUALIZER CIRCUIT BREAKER
46
20⭐
ELECTRICALLY OPERATED VALVE (SOLENOID)
47
53
EXCITER OR DC GENERATOR RELAY
48
65
GOVERNER
49
66
NOTCHING OR JOGGING
50
3⭐
INTERLOCKING RELAY
51
70⭐
RHEOSTAT
