Electrical Power System Device Numbers and Functions

Question 1

12 ⭐

Answer 1

OVER-SPEED DEVICE

Question 2

13⭐

Answer 2

SYNCHRONOUS-SPEED DEVICE

Question 3

14 ⭐

Answer 3

UNDER-SPEED DEVICE

Question 4

21 ⭐

Answer 4

DISTANCE RELAY

Question 5

26 ⭐

Answer 5

APPARATUS THERMAL DEVICE (ARMORTISSEUR)

Question 6

27 ⭐

Answer 6

UNDERVOLATGE RELAY

Question 7

38 ⭐

Answer 7

BEARING PROTECTIVE (TEMP) DEVICE

Question 8

40 ⭐

Answer 8

FIELD RELAY

Question 9

41 ⭐

Answer 9

FIELD CIRCUIT BREAKER DEVICE

Question 10

43 ⭐

Answer 10

MANUAL TRANSFER OR SELECTOR DEVICE

Question 11

46⭐

Answer 11

REVERSE PHASE OR PHASE BALANCE CURRENT RELAY

Question 12

48⭐

Answer 12

INCOMPLETE SEQUENCE RELAY

Question 13

49⭐

Answer 13

MACHINE OR XFMR THERMAL RELAY

Question 14

50⭐

Answer 14

INSTANTANEOUS OVERCURRENT RELAY

Question 15

51⭐

Answer 15

AC TIME OVERCURRENT RELAY

Question 16

52⭐

Answer 16

AC CIRCUIT BREAKER DEVICE

Question 17

55⭐

Answer 17

POWER FACTOR RELAY

Question 18

56⭐

Answer 18

FIELD APPLICATION RELAY

Question 19

59⭐

Answer 19

OVERVOLTAGE RELAY

Question 20

63⭐

Answer 20

PRESSURE SWITCH

Question 21

64⭐

Answer 21

GROUND PROTECTIVE RELAY

Question 22

71⭐

Answer 22

LEVEL SWITCH

Question 23

72⭐

Answer 23

DC CIRCUIT BREAKER

Question 24

80⭐

Answer 24

FLOW SWITCH

Question 25

86⭐

Answer 25

LOCKOUT RELAY

Question 26

87⭐

Answer 26

DIFFERENTIAL PROTECTIVE RELAY

Question 27

94⭐

Answer 27

TRIPPING OR TRIP-FREE RELAY

Question 28

89⭐

Answer 28

LINE SWITCH (DISCONNECT)

Question 29

81⭐

Answer 29

FREQUENCY RELAY

Question 30

33⭐

Answer 30

POSITION SWITCH

Question 31

20⭐

Answer 31

ELECTRICALLY OPERATED VALVE (SOLENOID)

Question 32

3⭐

Answer 32

CHECKING OR INTERLOCKING RELAY

Question 33

70⭐

Answer 33

RHEOSTAT

Question 34

4⭐

Answer 34

Master Contactor

Question 35

90⭐

Answer 35

REGULATING DEVICE

Question 36

62⭐

Answer 36

TIME DELAY STOPPING OR OPENING RELAY