ANSI Numbers
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21 Terms
1
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1
Master Element
2
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4
Master Contactor
3
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11
Multifunction Device
4
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21
Distance Relay
5
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25
Synchronizing or Synchronism -Check Device
6
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27
Undervoltage Relay
7
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30
Annunciator Relay
8
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32
Directional Power Relay
9
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43
Manual Transfer or Selector Device
10
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50
Instantaneous Overcurrent
11
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51
AC Inverse Time Overcurrent Relay
12
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52
AC Circuit Breaker
13
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59
Overvoltage Relay
14
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63
Pressure Switch
15
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67
AC Directional Overcurrent Relay
16
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74
Alarm Relay
17
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79
AC-Reclosing Relay
18
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85
Pilot Communications
19
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86
Lockout Relay
20
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87
Differential Protective Relay
21
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94
Tripping or Trip-Free Relay
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Flashcards (42)