Functionality Levels, Other Functions - ABB REF 541 Product Manual

Feeder terminal

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User manual (36 pages)

Technical reference manual, general (132 pages)

Technical reference manual (118 pages)

Table Of Contents

Table of Contents

Feeder Terminal

Functionality levels, protection functions

ANSI

IEC

Function

Code

Symbol

LOAD SHEDDING AND

RESTORATION

81-1

Underfrequency or

overfrequency inc. rate of

change, stage 1

81-2

Underfrequency or

overfrequency incl. rate of

change, stage 2

81-3

f3t

Underfrequency or

overfrequency incl. rate of

change, stage 3

81-4

Underfrequency or

overfrequency incl. rate of

change, stage 4

81-5

Underfrequency or

overfrequency incl. rate of

change, stage 5

ADDITIONAL FUNCTIONS

O  I

Auto-reclosure

25-1

SYNC1

Synchro-check/voltage

check, stage 1

25-2

SYNC2

Synchro-check/voltage

check, stage 2

3I2f >

Three-phase inrush detector Inrush3

FUSEF

Fuse failure supervision

Iub>

Phase discontinuity

62BF

CBFP

Circuit breaker failure

49M/G/T 3Ithdev> Three-phase thermal

overload protection for

devices

Is2t n<

Start-up supervision for

motors

47-1

U1U2<>_

Three-phase phase-

sequency voltage protection,

stage 1

47-2

U1U2<>_

Three-phase phase-

sequency voltage protection,

stage 2