Parameter: 3ph.fail. - phs.curr. jump
•
Recommended setting value (_:103) 3ph.fail. - phs.curr. jump = 0.1 A for I
rated
= 1 A or
0.5 A for I
rated
= 5 A
The 3ph.fail. - phs.curr. jump parameter is used to set the differential current between the present
current phasor and the stored phasor (from the previous period). If the value is exceeded, the function detects
a system incident and blocks the monitoring.
Siemens recommends using the default setting.
Parameter: SO 3ph.fail. - time delay
•
Recommended setting value (_:106) SO 3ph.fail. - time delay = 3.00 s
The SO 3ph.fail. - time delay parameter allows you to set the delay of the monitoring.
Siemens recommends using the default setting.
NOTE
Adapt the SO 3ph.fail. - time delay parameter to the inherent time of protection functions which
are intended to block the monitoring function.
Note that with parameter values 0 s blocking of the monitoring function via a protection stimulation will
not be possible any more.
Parameter: Switch-on 3ph. failure
•
Recommended setting value (_:107) Switch-on 3ph. failure = on
Parameter Value
Description
on
The subfunction Switching to a 3-phase measuring-voltage failure is
active.
In the case of low loads, the subfunction for detection of a 3-phase meas-
uring-voltage failure is not released, for example, because the current flow
is too low. In this situation, the subfunction Switching to a 3-phase meas-
uring-voltage failure can perform the monitoring task.
Siemens recommends to switch that subfunction on.
off
With the setting off the subfunction Switching to a 3-phase measuring-
voltage failure is not active.
Settings
Addr.
Parameter C Setting Options Default Setting
Mes.v.fail.det
_:1 Mes.v.fail.det:Mode
•
off
•
on
•
test
on
_:115 Mes.v.fail.det:Asym.fail.-
DO on netw.flt.
•
no
•
yes
yes
_:113 Mes.v.fail.det:Asym.fail.
- time delay
0.00 s to 30.00 s 10.00 s
_:102 Mes.v.fail.det:3ph.fail. -
phs.curr.release
1 A @ 100 Irated 0.030 A to 35.000 A 0.100 A
5 A @ 100 Irated 0.15 A to 175.00 A 0.50 A
1 A @ 50 Irated 0.030 A to 35.000 A 0.100 A
5 A @ 50 Irated 0.15 A to 175.00 A 0.50 A
1 A @ 1.6 Irated 0.001 A to 1.600 A 0.100 A
5 A @ 1.6 Irated 0.005 A to 8.000 A 0.500 A
9.3.2.7
Supervision Functions
9.3 Supervision of the Secondary System
1250 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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