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2.49.8
Set Points (Measured Values)
The SIPROTEC 4 device 7UM62 allows to set warning levels for important measured and metered values. If
one of these limit values is reached or exceeded positively or negatively during operation, the device generates
an alarm which is displayed as an operational indication. As for all operational messages, it is possible to output
the information to LEDs and/or output relays and via the serial interfaces. Unlike real protection functions such
as time overcurrent protection or overload protection, this supervision routine runs in the background, so that
in the case of a fault and rapidly changing measured values it may not respond when protection functions pick
up. Also, the supervision does not respond immediately before a trip because an alarm is only output if the set-
point are repeatedly violated.
With the 7UM62, only the limit value of the undercurrent protection IL< is configured when the device is deliv-
ered from the factory. Further limit values can be configured if their measured and metered values have been
set accordingly in CFC (see SIPROTEC 4 System Description /1/).
Limit settings are entered under MEASUREMENTS in the sub-menu LIMITS (MV) by overwriting the default
limit values.
If the phase current drops below the limit „IL<", the indication „SP. I<" (No. 284) will be issued.
2.49.8.1 Information List
No.
Information
-
IL<
284
SP. I<
2.49.9
Set Points (Statistic)
SIPROTEC 4 device 7UM62 allows limit levels for important statistic values to be set. If during operation a value
reaches or exceeds one of these limits, the device generates an alarm which is displayed as an operational
indication.
If the limit „OpHour>" is exceeded, the indication „SP. Op Hours>" (No. 272) will be issued.
2.49.9.1 Information List
No.
Information
-
OpHour>
272
SP. Op Hours>
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
Type of In-
formation
LV
IL< under current
OUT
Set Point I< alarm
Type of In-
formation
LV
Operating hours greater than
OUT
Set Point Operating Hours
2.49 Auxiliary Functions
Comments
Comments
Functions
343
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