ABB Relion 650 Series Technical Manual page 296

Section 10
Control
The inputs BLOCK and BLKSYNCH are available for total block of the complete SESRSYN function
and block of the Synchronizing function respectively. TSTSYNCH will allow testing of the function
where the fulfilled conditions are connected to a separate output.
SESRSYN (25)
OPERATION SYNCH
TEST MODE
STARTSYN
BLOCK
BLKSYNCH
Voltage difference <
10% of VBase
Bus voltage > 80% of
Line voltage > 80% of
VBase
FreqDiffMax
FreqDiffMin
FreqRateChange
fBus&fLine ± 5 Hz
PhaseDiff < 15 deg
PhaseDiff=closing angle
ANSI08000020 V1 EN-US
Figure 148: Simplified logic diagram for the synchronizing function
10.1.7.4 Energizing check
Voltage values are measured in the IED centrally and are available for evaluation by the
Synchronism check function.
The frequency on both sides of the circuit breaker is also measured. The frequencies must not
deviate from the rated frequency more than +/-5Hz.
The Energizing direction can be selected individually for the Manual and the Automatic functions
respectively. When the conditions are met the outputs AUTOENOK and MANENOK respectively will
be activated if the fuse supervision conditions are fulfilled. The output signal can be delayed
independently for MANENOK and AUTOENOK conditions. The Energizing direction can also be
selected by an integer input AENMODE respective MENMODE, which for example, can be
connected to a Binary to Integer function block (B16I). Integers supplied shall be 1=off, 2=DLLB,
3=DBLL and 4= Both. Not connected input with connection of INTZERO output from Fixed Signals
(FIXDSIGN) function block will mean that the setting is done from Parameter Setting tool. The
active position can be read on outputs MODEAEN resp MODEMEN. The modes are 0=OFF, 1=DLLB,
2=DBLL and 3=Both.
290
Disabled
Enabled
Disabled
Enabled
S
AND
R
OR
VBase
AND
© Copyright 2011 ABB Power Grids. All rights reserved
AND
AND
OR
AND
OR
tClose
Pulse
AND
tMax
Synch
1MRK 506 326-UUS B
SYNPROGR
SYNOK
TSTSYNOK
SYNFAIL
ANSI08000020_1_en.vsd
M14835-3 v5
Line distance protection REL650
Technical manual