4.1.5.9 T1PTTR Monitored data
Table 440: T1PTTR Monitored data
Name Type Values (Range) Unit Description
TEMP FLOAT32 -100.0...9999.9 °C The calculated temper-
ature of the protected
object
TEMP_RL FLOAT32 0.00...99.99 The calculated temper-
ature of the protected
object relative to the
operate level
T_OPERATE INT32 0...60000 s Estimated time to oper-
ate
T_ENA_CLOSE INT32 0...60000 s Estimated time to deac-
tivate BLK_CLOSE
TEMP_AMB FLOAT32 -99...999 °C The ambient tempera-
ture used in the calcula-
tion
T1PTTR Enum
1=on
2=blocked
3=test
4=test/blocked
5=off
Status
4.1.5.10 Technical data
Table 441: T1PTTR Technical data
Characteristic Value
Operation accuracy Depending on the frequency of the measured
current: f
n
±2 Hz
Current measurement: ±1.5% of the set value
or ±0.002 × I
n
(at currents in the range of
0.01...4.00 × I
n
)
Operate time accuracy
1
±2.0% of the theoretical value or ±0.50 s
4.1.6 Three-phase thermal overload protection, two time
constants T2PTTR (ANSI 49T/G/C)
4.1.6.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Three-phase thermal overload pro-
tection, two time constants
T2PTTR 3Ith>T/G/C 49T/G/C
1
Overload current > 1.2 × Operate level temperature
1MRS759142 F Protection functions
REX640
Technical Manual
389
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