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Electrical Maintenance > Device List > Flashcards

Device List Flashcards

1
Q

2

A

Time Delay Relay

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2
Q

6

A

Starting Circuit Breaker

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3
Q

21

A

Distance Relay

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4
Q

25

A

Sync Check Relay

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5
Q

29

A

Isolating Contactor

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6
Q

32

A

Directional Power

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7
Q

27

A

Undervoltage Relay

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8
Q

40

A

Field Relay, Loss of Field

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9
Q

41

A

Field Circuit Breaker

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10
Q

42

A

Running Circuit Breaker (starter, contactor)

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11
Q

43

A

Manual Transfer (Control Switch)

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12
Q

46

A

Reverse or Phase Balance

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13
Q

47

A

Phase Sequence Relay

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14
Q

49

A

Thermal Overload Relay, Temperature switch

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15
Q

50

A

Instantaneous Overcurrent Relay

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16
Q

51

A

Time Overcurrent Relay

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17
Q

52

A

AC Circuit Breaker

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18
Q

59

A

Undervoltage Relay

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19
Q

60

A

Voltage Balance Relay

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20
Q

61

A

Current Balance Relay

21
Q

62

A

Time Delay Stop or Open

22
Q

63

A

Pressure Relay

23
Q

64

A

Ground Protective Relay

24
Q

65

A

Governor

25
Q

66

A

Directional Overcurrent

26
Q

67N

A

Directional Ground Relay

27
Q

70

A

Rheostat

28
Q

72

A

DC Circuit Breaker

29
Q

74

A

Alarm Relay

30
Q

78

A

Out of Step Relay

31
Q

81

A

Frequency Relay

32
Q

85

A

Pilot Wire Receiver Relay

33
Q

86

A

Lockout Relay

34
Q

87

A

Differential Relay

35
Q

94

A

Tripping or Trip Free Relay

36
Q

95

A

Ground Current Annunciator Relay

37
Q

71

A

Level Switch

38
Q

52Y

A

Anti-pump Relay

39
Q

What is the function of the 52Y device?

A

The Anti-Pump Relay prevents a breaker close when a trip signal is present

40
Q

52X

A

Close coil or Spring Release Coil

41
Q

What is the function of the 52X device?

A

It electrically closes the breaker by releasing the close latch.

42
Q

52ST

A

Shunt Trip Coil

43
Q

What is the function of the 52ST device?

A

It electrically trips the breaker

44
Q

What is the function of the PS1 device in a 12kV Cutler Hammer breaker?

A

Position Switch 1 initiates anti-pump relay (52Y) to prevent breaker operation during breaker rack in.

45
Q

What is the function of the PS2 device in a 12kV Cutler Hammer breaker?

A

Position Switch 2 prevents closing springs from charging during a breaker rack in.

46
Q

What is the function of the LS1/bb device in a 12kV Cutler Hammer breaker?

A

The Limit Switch 1 contact opens when closing springs are fully charged to stop the motor.

47
Q

What is the function of the LS2/aa device in a 12kV Cutler Hammer breaker?

A

The Limit Switch 2 NO contact remains open to prevent breaker from closing until springs are fully charged.

48
Q

What is the function of the LS2/bb device in a 12kV Cutler Hammer breaker?

A

The Limit Switch 2 NC contact initiates the anti-pump relay (52Y) until closing springs are fully charged.

Electrical Maintenance (11 decks)

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