Questions and Answers
What does the ANSI device number 2 refer to?
What is ANSI device number 3?
Checking or Interlocking Relay
What does ANSI device number 4 refer to?
Master Contactor
What is the definition of ANSI device number 5?
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What does ANSI device number 6 refer to?
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What is ANSI device number 7?
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What does ANSI device number 8 refer to?
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What is the definition of ANSI device number 9?
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What does ANSI device number 10 refer to?
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What is ANSI device number 11?
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What does ANSI device number 12 refer to?
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What is the definition of ANSI device number 13?
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What does ANSI device number 14 refer to?
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What is ANSI device number 15?
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What does ANSI device number 16 refer to?
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What is ANSI device number 17?
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What does ANSI device number 18 refer to?
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What is the definition of ANSI device number 19?
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What does ANSI device number 20 refer to?
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What is ANSI device number 21?
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What does ANSI device number 22 refer to?
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What is the definition of ANSI device number 23?
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What does ANSI device number 24 refer to?
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What is ANSI device number 25?
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What does ANSI device number 26 refer to?
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What is the definition of ANSI device number 27?
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What does ANSI device number 28 refer to?
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What is ANSI device number 29?
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What does ANSI device number 30 refer to?
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What is the definition of ANSI device number 31?
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What does ANSI device number 32 refer to?
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What is ANSI device number 33?
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What does ANSI device number 34 refer to?
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What is the definition of ANSI device number 35?
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What does ANSI device number 36 refer to?
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What is ANSI device number 37?
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What does ANSI device number 38 refer to?
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What is the definition of ANSI device number 39?
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What does ANSI device number 40 refer to?
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What is ANSI device number 41?
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What does ANSI device number 42 refer to?
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What is the definition of ANSI device number 43?
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What does ANSI device number 44 refer to?
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What is ANSI device number 45?
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What does ANSI device number 46 refer to?
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What is the definition of ANSI device number 47?
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What does ANSI device number 48 refer to?
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What is ANSI device number 49?
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What does ANSI device number 50 refer to?
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What is the definition of ANSI device number 50G?
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What does ANSI device number 50N refer to?
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What is ANSI device number 50BF?
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What does ANSI device number 51 refer to?
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What is the definition of ANSI device number 51LR?
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What does ANSI device number 51G refer to?
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What is ANSI device number 51N?
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What does ANSI device number 52 refer to?
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What is the definition of ANSI device number 52a?
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What does ANSI device number 52b refer to?
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What is ANSI device number 53?
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What does ANSI device number 54 refer to?
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What is ANSI device number 55?
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What does ANSI device number 56 refer to?
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What is the definition of ANSI device number 57?
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What does ANSI device number 58 refer to?
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What is ANSI device number 59?
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Study Notes
ANSI Device Numbers Study Notes
- Device 2: Time delay starting/closing relay
- Device 3: Checking or interlocking relay for system checks
- Device 4: Master contactor; principal relay for controlling circuits
- Device 5: Stopping relay; used to halt operations
- Device 6: Starting circuit breaker; initiates circuit activation
- Device 7: Rate of change relay; monitors varying parameters
- Device 8: Control power disconnecting device; ensures electrical isolation
- Device 9: Reversing device; alters motor direction
- Device 10: Unit sequence switch; manages operational order
- Device 11: Multi-functioning device; serves various roles
- Device 12: Overspeed device; protects against excessive speeds
- Device 13: Synchronous speed device; ensures motors run at set speed
- Device 14: Underspeed device; activates at insufficient speeds
- Device 15: Speed or frequency matching device; synchronizes dual operations
- Device 16: Data communications device; facilitates information exchange
- Device 17: Shunting or discharge switch; redirects current flow
- Device 18: Accelerating or decelerating device; alters speed gradients
- Device 19: Starting to running transition contractor; switches from startup to operation
- Device 20: Electrically operated valve; regulates flow using electricity
- Device 21: Distance relay; measures electrical distance in systems
- Device 22: Electrically operated valve; similar function to device 20
- Device 23: Temperature control device; maintains thermal levels
- Device 24: Volts per Hertz relay; manages voltage frequency relationships
- Device 25: Synchronizing check device; ensures alignment of electrical phases
- Device 26: Apparatus thermal device; monitors heat for safety
- Device 27: Undervoltage relay; triggers actions at low voltage
- Device 28: Flame detector; detects fire for safety measures
- Device 29: Isolating contactor or switch; disconnects elements safely
- Device 30: Annunciator relay; signals alarm or alerts
- Device 31: Separate excitation; provides independent voltage to systems
- Device 32: Directional power relay; identifies fault directions
- Device 33: Position switch; detects equipment locations
- Device 34: Master sequence device; oversees operational sequences
- Device 35: Brush operating or slip ring short circuit device; prevents overload
- Device 36: Polarity voltage device; checks electrical polarity
- Device 37: Undercurrent or underpower relay; activates under low current conditions
- Device 38: Bearing protection device; safeguards bearings from damage
- Device 39: Mechanical conditioning monitor; assesses mechanical health
- Device 40: Field relay; regulates field circuits
- Device 41: Field circuit breaker; protects field circuits
- Device 42: Running circuit breaker; safeguards current during operations
- Device 43: Manual transfer or selector device; allows operator control
- Device 44: Unit sequence starting relay; initiates start sequences
- Device 45: DC over voltage relay; protects against voltage spikes
- Device 46: Reverse phase or phase balance current relay; detects phase inconsistencies
- Device 47: Phase sequence or phase balance voltage relay; maintains phase harmony
- Device 48: Incomplete sequence relay; signals when operations deviate
- Device 49: Machine or transformer thermal relay (OLR); guards against overheating
- Device 50: Instantaneous overcurrent relay; reacts to sudden current spikes
- Device 50G: Instantaneous earth over current relay (neutral CT method); detects ground faults
- Device 50N: Instantaneous earth over current relay (residual mode); identifies faults through residual current
- Device 50BF: Breakure failure; signals malfunctions
- Device 51: AC inverse time overcurrent relay; responds based on current rise time
- Device 51LR: AC inverse time overcurrent for locked rotor; protects against stalled conditions
- Device 51G: AC inverse time earth overcurrent (neutral CT method); reacts to ground faults
- Device 51N: AC inverse time earth overcurrent relay (residual method); safeguards against ground faults
- Device 52: AC circuit breaker; interrupts excessive current flows
- Device 52a: AC circuit breaker with an open contact position when open
- Device 52b: AC circuit breaker with a closed contact position when open
- Device 53: Exciter or DC generator relay; manages excitation circuits
- Device 54: Turning gear engaging device; engages mechanical elements
- Device 55: Power factor relay; optimizes energy efficiency
- Device 56: Field application relay; applies field operations
- Device 57: Short circuiting or grounding device; protects against short circuits
- Device 58: Rectification failure relay; identifies rectifier issues
- Device 59: Functions not specified in the provided data.
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Description
This quiz focuses on ANSI device numbers, which are essential for understanding relay functions in electrical systems. Each card presents a specific ANSI number along with its definition, enhancing your knowledge of control circuit components. Perfect for students and professionals in electrical engineering.