Three-Phase Thermal Protection; Three-Phase Thermal Overload Protection, Two Time Constants - ABB REG615 Product Manual

Generator and Interconnection Protection
REG615
Product version: 5.0 FP1
Table 57. Three-phase thermal protection for feeders, cables and distribution transformers (T1PTTR)
Characteristic
Operation accuracy
1)
Operate time accuracy
1) Overload current > 1.2 × Operate level temperature
Table 58. Three-phase thermal protection for feeders, cables and distribution transformers (T1PTTR) main settings
Parameter
Env temperature Set
Current reference
Temperature rise
Time constant
Maximum temperature
Alarm value
Reclose temperature
Current multiplier
Initial temperature
Table 59. Three-phase thermal overload protection, two time constants (T2PTTR)
Characteristic
Operation accuracy
1)
Operate time accuracy
1) Overload current > 1.2 x Operate level temperature
Table 60. Three-phase thermal overload protection, two time constants (T2PTTR) main settings
Parameter
Temperature rise
Max temperature
Operate temperature
Short time constant
Weighting factor p
Current reference
Operation
44
Function
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
T1PTTR
Function
T2PTTR
T2PTTR
T2PTTR
T2PTTR
T2PTTR
T2PTTR
T2PTTR
Value
Depending on the frequency of the measured current: f
Current measurement: ±1.5% of the set value or ±0.002 × I
in the range of 0.01...4.00 × I
n
±2.0% of the theoretical value or ±0.50 s
Value (Range)
-50...100°C
0.05...4.00 × I
n
0.0...200.0°C
60...60000 s
20.0...200.0°C
20.0...150.0°C
20.0...150.0°C
1...5
-50.0...100.0°C
Value
Depending on the frequency of the measured current: f
Current measurement: ±1.5% of the set value or ±0.002 x I
in the range of 0.01...4.00 x I )
n
±2.0% of the theoretical value or ±0.50 s
Value (Range)
0.0...200.0°C
0.0...200.0°C
80.0...120.0%
6...60000 s
0.00...1.00
0.05...4.00 × I
n
1 = on
5 = off
1MRS758279 B
±2 Hz
n
n
)
Step
1
0.01
0.1
1
0.1
0.1
0.1
1
0.1
±2 Hz
n
n
Step
0.1
0.1
0.1
1
0.01
0.01
-
(at currents
(at currents
ABB