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ABB RELION 670 Series Technical Manual page 367

Generator protection

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1MRK 502 066-UUS B

TimerModeZx =

Enable Ph-Ph,

Ph-G

PPZx

PGZx

BLOCK

LOVBZ

BLKZx

BLKTRZx

PUPHS

LNKZ1

LNKZ2

LNKZRV

LNKZ3

LNKZ4

LNKZ5

ANSI12000139 V2 EN-US

Figure 187: Logic for linking of timers

PHSA

RVA

PHSB

RVB

PHSC

RVC

PHSAB

RVAB

PHSBC

RVBC

PHSCA

RVCA

IN present

BLOCK

LOVBZ

ANSI12000141 V1 EN-US

Figure 188: Additional pickup outputs 3

Technical manual

AND

OR

AND

OR

OR

OR

ZoneLinkStart

Phase Selection

1st pickup zone

FALSE (0)

OR

TimerLinksZx =

LoopLink & ZoneLink

AND

OR

AND

AND

OR

AND

AND

OR

AND

OR

AND

tPPZx

AND

0

OR

tPPZx

AND

AND

0

TimerLinksZx

LoopLink (tPP-tPG)

LoopLink & ZoneLink

OR

no links

AND

0

AND

15 ms

0

AND

15 ms

0

AND

15 ms

OR

ANSI12000141-1-en.vsd

Impedance protection

TZx

LNKZx

ANSI12000139-2-en.vsdx

REV_A

REV_B

REV_C

REV_G

AND

Section 7

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