Functions
6-59
7SJ63 Manual
C53000-G1140-C120-1
User Specified
Curves
If address
1172&
was set to
8VHU'HILQHG3LFNXS&XUYH
or
8VHU
'HILQHG3LFNXSDQG5HVHW&XUYH
during configuration of the user-specified
curve option, a maximum of 20 value pairs (current and time) may be entered at ad-
dress
0RI387'
to represent the time-current characteristic curve associated
with the 67N-TOC element. This option allows point-by-point entry of any desired
curve.
If address
was set to
8VHU'HILQHG3LFNXSDQG5HVHW&XUYH
during
configuration of the user-specified curve option, additional value pairs (current and re-
set time) may be entered at address
to represent the reset curve associated with
the 67N-TOC element.
Current and time values are entered as multiples of the address
and
set-
tings. Therefore, it is recommended that addresses
and
be initially set to
to simplify the calculation of these ratios. Once the curve is entered, the settings
at addresses
and
may be modified if necessary.
Upon delivery of the device, all time values are set at
∞
, preventing pickup of the de-
vice from initiating a trip signal.
When entering user specified curve data, the same instructions apply as in Subsection
6.3.2.1 for the phase elements.
6.3.2.5
Settings for Directional Ground Overcurrent Protection
In the list below, the setting ranges and default setting values for the pickup currents
are for a device with a nominal current rating I
N
= 5 A. For a nominal current rating I
N
= 1 A, divide the Setting Options values and Default Setting values by 5. Consider the
current transformer ratios when setting the device with primary values.
Addr.
LCD-Text
Setting options
Default Setting
Comments
Configuration
Defi
n
it
e
Time Only
IEC Curve
AN
SI
Curv
e
User
Defined P
ickup
User
def.
Reset
1601
FCT 67N/67N–TOC
ON
OFF
OFF
Directional overcurrent
protection enabling
X
X
X
X
X
1602
67N–2 PICKUP
0.25 ~ 175.00 A
2.50 A
Pickup setting of the 67N-2
element
X
X
X
X
X
1603
67N–2 DELAY
0.00 ~ 60.00 sec
0.10 sec
Delay setting of the 67N-2
element
X
X
X
X
X
1604
67N–1 PICKUP
0.25 ~ 175.00 A
1.00 A
Pickup setting of the 67N-1
element
X
X
X
X
X
1605
67N–1 DELAY
0.00 ~ 60.00 sec
0.50 sec
Delay setting of the 67N-1
element
X
X
X
X
X
1607
67N–TOC PICKUP
0.50 ~ 20.00 A
1.00 A
Pickup setting of the 67N-
TOC element
X
X
X
X
1608
67N–TOC T– DIAL
0.05 ~ 3.20 sec
0.20 sec
Time multiplier T IGp, User
Defined, IEC
X
X
X
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