Interaction with Automatic Reclosing Function (ground)
If reclosing follows, high-speed and simultaneous closing in the event of a fault with 67N-2 is usually desired.
If the fault still exists after reclosing, the 67N-1 or 67N-TOC element is initiated with graded tripping times,
that is, the 67N-2 or 67N-3 element is blocked. For this purpose, parameter 1614
67N-2 active
or 1632
67N-3 active
is used to determine whether the 67N-2 or 67N-3 element is influenced by the release signal
of the internal or an external automatic reclosing device or not. The setting
with 79 active
means that the
67N- 2 or 67N-3 element is only released if the automatic reclosing function is not blocked. If this is not
desired, the setting
always
is selected so that the 67N-2 or 67N-3 element is always active as configured.
The integrated automatic reclosing function of 7SJ62/64 also provides the option to individually determine for
each overcurrent element whether tripping or blocking is to be carried out instantaneously, unaffected by the
AR with time delay (see Section
2.16 Automatic Reclosing System 79
).
Settings
Addresses which have an appended “A” can only be changed with DIGSI, under “Additional Settings”.
The table indicates region-specific presettings. Column C (configuration) indicates the corresponding secon-
dary nominal current of the current transformer.
Addr.
Parameter
C
Setting Options
Default Setting
Comments
1501
FCT 67/67-TOC
OFF
ON
OFF
67, 67-TOC Phase Time
Overcurrent
1502
67-2 PICKUP
1A
0.10 .. 35.00 A; ∞
2.00 A
67-2 Pickup
5A
0.50 .. 175.00 A; ∞
10.00 A
1503
67-2 DELAY
0.00 .. 60.00 sec; ∞
0.10 sec
67-2 Time Delay
1504
67-1 PICKUP
1A
0.10 .. 35.00 A; ∞
1.00 A
67-1 Pickup
5A
0.50 .. 175.00 A; ∞
5.00 A
1505
67-1 DELAY
0.00 .. 60.00 sec; ∞
0.50 sec
67-1Time Delay
1507
67-TOC PICKUP
1A
0.10 .. 4.00 A
1.00 A
67-TOC Pickup
5A
0.50 .. 20.00 A
5.00 A
1508
67 TIME DIAL
0.05 .. 3.20 sec; ∞
0.50 sec
67-TOC Time Dial
1509
67 TIME DIAL
0.50 .. 15.00 ; ∞
5.00
67-TOC Time Dial
1510
67-TOC Drop-out
Instantaneous
Disk Emulation
Disk Emulation
Drop-Out Characteristic
1511
67- IEC CURVE
Normal Inverse
Very Inverse
Extremely Inv.
Long Inverse
Normal Inverse
IEC Curve
1512
67- ANSI CURVE
Very Inverse
Inverse
Short Inverse
Long Inverse
Moderately Inv.
Extremely Inv.
Definite Inv.
Very Inverse
ANSI Curve
1513A
MANUAL CLOSE
67-3 instant.
67-2 instant.
67-1 instant.
67-TOC instant.
Inactive
67-2 instant.
Manual Close Mode
1514A
67-2 active
with 79 active
always
always
67-2 active
2.3.11
Functions
2.3 Directional Overcurrent Protection 67, 67N
106
SIPROTEC 4, 7SJ62/64, Manual
C53000-G1140-C207-8, Edition 08.2016
Summary of Contents for SIPROTEC 4
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