Table 322: GSPTTR (49S) Non group settings (basic)
Name Values (Range) Unit Step Default Description
MeasurCurrent RMS
PosSeqNegSeq
- - RMS Measured current quantity (RMS or
weighted sum of positive and negative
sequence)
GlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Value
groups
8.17.6 Monitored data
PID-3719-MONITOREDDATA v4
Table 323: GSPTTR (49S) Monitored data
Name Type Values (Range) Unit Description
IMEAS REAL - A Measured current, used for calculation of
operate time
THETA REAL - % Overload in percent of set trip level (i.e.
Trip=100%)
8.17.7 Operation principle
GUID-93C398EE-7AB7-400A-A357-0CDD9BBDFA33 v5
The stator overload protection can be illustrated in three separate sub-blocks, see Figure 310.
Current
measurement
Overload
characteristic
Trip logic
block
IEC12000013-1-en.vsd
IEC12000013 V1 EN-US
Figure 310: Representation of the stator overload protection
Current measurement
Three phase currents are measured either on the high voltage (HV) side of the generator or on the
neutral side of the stator winding, see Figure #GUID-93C398EE-7AB7-400A-A357-0CDD9BBDFA33/
GUID-877000D4-9090-4709-B754-6B9EE0F09FA6
Section 8 1MRK 502 066-UUS B
Current protection
580
Technical manual
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