Nema Flashcards
(33 cards)
1
Q
1 101
A
Master element
2
Q
02
A
Time delay
3
Q
08
A
Control power disconnecting device
4
Q
11
A
Multifunction device
5
Q
21
A
Distance relay
6
Q
23
A
Temperature control device
7
Q
27
A
Under voltage
8
Q
37
A
Undercurrent or under power relay
9
Q
43
A
Manual transfer or selector device
10
Q
50
A
Instantaneous over current relay
11
Q
50BF
A
Instantaneous breaker failure
12
Q
50G
A
Ground instantaneous over current
13
Q
50N
A
Neutral instantaneous overcurrent
14
Q
50P
A
Phases instantaneous overcurrent
15
Q
50/87
A
Instantaneous differential
16
Q
51
A
Ac time over current relay
17
Q
52
A
Ac circuit breaker
18
Q
59
A
Over voltage relay
19
Q
62
A
Time delay stopping or opening relay
20
Q
63
A
Pressure switch detector
21
Q
64
A
Ground protective relay
22
Q
69
A
Permissive control device
23
Q
70
A
Rheostat
24
Q
74
A
Alarm relay
25
79
Ac reclosing relay / auto reclose
26
86
Locking out relay
27
87
Differential current relay
28
88
Auxiliary motor
29
90
Regulating device
30
91
D-C Voltage directional relay
31
94
Tripping or trip free relay
32
30
Annunciatior
33
81
frequency device
