Three-Phase Thermal Overload Protection, Two Time Constants T2Pttr (Ansi 49T/G/C) - ABB RELION REX640 Technical Manual

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