Electrical Systems Standard Device Function Numbers and Maintenance Practice Review

A set of 50 flashcards based on the ANSI/IEEE Standard Device Function Numbers and electrical library references found in the provided textbook appendices and indices.

What is the function of ANSI/IEEE standard device number 1?

Master element

What is the function of ANSI/IEEE standard device number 2?

Time-delay starting or closing relay

What is the function of ANSI/IEEE standard device number 3?

Checking or interlocking relay

What is the function of ANSI/IEEE standard device number 4?

Master contractor

What is the function of ANSI/IEEE standard device number 5?

Shopping device

What is the function of ANSI/IEEE standard device number 6?

Starting circuit breaker

What is the function of ANSI/IEEE standard device number 7?

Anode circuit breaker

What is the function of ANSI/IEEE standard device number 8?

Control power disconnecting device

What is the function of ANSI/IEEE standard device number 9?

Reversing device

What is the function of ANSI/IEEE standard device number 10?

Unit sequence switch

What is the function of ANSI/IEEE standard device number 12?

Overspeed device

What is the function of ANSI/IEEE standard device number 13?

Synchronous-speed device

What is the function of ANSI/IEEE standard device number 14?

Underspeed device

What is the function of ANSI/IEEE standard device number 15?

Speed- or frequency-matching device

What is the function of ANSI/IEEE standard device number 17?

Shunting or discharge switch

What is the function of ANSI/IEEE standard device number 18?

Accelerating or decelerating device

What is the function of ANSI/IEEE standard device number 19?

Starting-to-running transition contactor

What is the function of ANSI/IEEE standard device number 20?

Electrically operated valve space (solenoid valve)

What is the function of ANSI/IEEE standard device number 21?

Distance relay

What is the function of ANSI/IEEE standard device number 22?

Equalizer circuit breaker

What is the function of ANSI/IEEE standard device number 23?

Temperature-control device

What is the function of ANSI/IEEE standard device number 25?

Synchronizing- or synchronous-check device

What is the function of ANSI/IEEE standard device number 26?

Apparatus thermal device

What is the function of ANSI/IEEE standard device number 27?

Undervoltage relay

What is the function of ANSI/IEEE standard device number 28?

Flame detector

What is the function of ANSI/IEEE standard device number 29?

Isolating contactor

What is the function of ANSI/IEEE standard device number 30?

Annunciator relay

What is the function of ANSI/IEEE standard device number 31?

Separate excitation device

What is the function of ANSI/IEEE standard device number 32?

Directional power relay

What is the function of ANSI/IEEE standard device number 33?

Position switch

What is the function of ANSI/IEEE standard device number 34?

Master sequence device

What is the function of ANSI/IEEE standard device number 35?

Brush-operating or slip-ring short-circuiting device

What is the function of ANSI/IEEE standard device number 36?

Polarity or polarizing voltage device

What is the function of ANSI/IEEE standard device number 37?

Undercurrent or underpower relay

What is the function of ANSI/IEEE standard device number 38?

Bearing protective device

What is the function of ANSI/IEEE standard device number 39?

Mechanical condition monitor

What is the function of ANSI/IEEE standard device number 40?

Loss of fi eld relay

What is the function of ANSI/IEEE standard device number 46?

Reverse-phase or phase-balance current relay

What is the function of ANSI/IEEE standard device number 47?

Phase-sequence voltage relay

What is the function of ANSI/IEEE standard device number 50?

Instantaneous overcurrent or rate-of-rise relay

What is the function of ANSI/IEEE standard device number 51?

AC time overcurrent relay

What is the function of ANSI/IEEE standard device number 52?

AC circuit breaker

What is the function of ANSI/IEEE standard device number 59?

Overvoltage relay

What is the function of ANSI/IEEE standard device number 60?

Voltage- or current-balance relay (use $60\,^{\circ}\text{C}$ when $60\,\text{V}$ is also present)

What is the function of ANSI/IEEE standard device number 79?

AC reclosing relay

What is the function of ANSI/IEEE standard device number 86?

Locking-out relay

What is the function of ANSI/IEEE standard device number 87?

Differential protective relay

What does the suffix letter N denote when used with device function numbers?

Device is connected in the secondary neutral of current transformers

What purpose do the suffix letters X, Y, and Z serve with device function numbers?

Denote separate auxiliary devices

According to the transcript, what does the suffix letter B denote in the context of device function numbers?

Bus