Technical Data - ABB REL 551-C1*2.5 Technical Reference Manual

4.7
Thermal phase overload protection (THOL)

Technical data

Table 91: THOL - Thermal phase overload protection
Function
Mode of operation
Base current
IBase
Temperature rise at IBase
TBase
Time constant
tau
Alarm temperature
TAlarm
Trip temperature
TTrip
Temp. difference for reset of trip
TdReset
Table 92: Thermal overload protection mA input
Function
Upper value for mA input
MI11-I_Max
Lower value for mA input
MI11-I_Min
Temp. corresponding to the
MI11-I_Max setting
MI11-MaxValue
Temp. corresponding to the
MI11-I_Min setting
MI11-MinValue
Setting range
Off / NonComp / Comp
( Function blocked/No temp. com-
pensation/Temp. comp.)
(10 - 200 ) % of I1b in steps of 1 % ± 2.5% of I
(0 - 100) ° C in steps of 1 ° C
(1 - 62) min in steps of 1 min
(50 - 150) ° C in steps of 1 ° C
(50 - 150) ° C in steps of 1 ° C
(5 - 30) ° C in steps of 1 ° C
Setting range
-25.00 - 25.00 mA in steps of 0.01
mA
-25.00 - 25.00 mA in steps of 0.01
mA
-1000 - 1000 ° C in steps of 1 ° C
-1000 - 1000 ° C in steps of 1 ° C
Chapter 5
Current
Accuracy
r
± 1 ° C
± 1 min
Accuracy
± 0.5% of set value
+/- 0.5% of set value
+/- 1% of set value +/- 1 ° C
+/- 1% of set value +/- 1 ° C
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