ABB Relion 670 series - Page 669

ABB Relion 670 series

1432 pages

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

Function Enable

TEST-ACTIVE

AND

TEST

OR

PU_V_A

PU_V_B

PU_V_C

tPulse

AND

AND

OR

AND

only 1 or 2 phases are low for

at least 10 s (not three)

OR

AND

OR

Reset Enable

Set Enable

OR

Line restored for

at least 3 s

Latched

Enable

ANSI07000089_2_en.vsd

PICKUP

TRIP

0-tTrip

0

0-tBlock

0

0-tRestore

0

CBOPEN

VTSU

BLOCK

Blocked = Yes

ANSI07000089 V2 EN-US

Figure 360: Simplified diagram of Loss of voltage check LOVPTUV (27)

1MRK 502 066-UUS B Section 9

Voltage protection

663

Technical manual

Table of Contents