Siemens SIPROTEC 7UT613 series User Manual

2.22 Additional Functions
313
7UT613/63x Manual
C53000-G1176-C160-2
Table 2-16 Measured values of differential protection
2.22.4.2 Information List
2.22.5 Set Points for Measured Values
2.22.5.1 User Defined Set-Points
7UT613/63x allows limit levels for important measured and counter values to be set
If, during operation, a value reaches one of these set-points, the device generates an
alarm which is indicated as an operational message. As for all operational messages,
it is possible to output the information to LED and/or output relay and via the serial in-
terfaces. Unlike real protection functions such as time overcurrent protection or over-
load 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 setpoint are repeatedly violated.
Set-points can only be set if their measured and metered values have been configured
correspondingly in CFC (see SIPROTEC 4 System Description /1/).
Measured Values % referred to
IDiffL1, IDiffL2, IDiffL3 Calculated differential currents of the three phases Operational rated current of the
protected object
IRESTL1, IRESTL2, IRESTL3 Calculated restraining currents of the three phases Operational rated current of the
protected object
IDiffREF Calculated differential current of the
restricted earth fault protection
Rated operational current of the
side or
3-phase measuring location
IRestREF Calculated restraint current of the
restricted earth fault protection
Rated operational current of the
side or
3-phase measuring location
No. Information Type of In-
formation
Comments
199.2640 IdiffREF= MV Idiff REF (I/Inominal object [%])
199.2641 IrestREF= MV Irest REF (I/Inominal object [%])
205.2640 IdiffRE2= MV Idiff REF2 (I/Inominal object [%])
205.2641 IrestRE2= MV Irest REF2 (I/Inominal object [%])
7742 IDiffL1= MV IDiffL1(I/Inominal object [%])
7743 IDiffL2= MV IDiffL2(I/Inominal object [%])
7744 IDiffL3= MV IDiffL3(I/Inominal object [%])
7745 IRestL1= MV IRestL1(I/Inominal object [%])
7746 IRestL2= MV IRestL2(I/Inominal object [%])
7747 IRestL3= MV IRestL3(I/Inominal object [%])

Siemens SIPROTEC 7UT613 series Specifications

General

Brand	Siemens
Model	SIPROTEC 7UT613 series
Category	Protection Device
Language	English