ABB
34
Feeder Protection and Control
REF615
Product version: 2.0
1MRS756379 D
Table 50. Three-phase thermal overload (T1PTTR)
Operation accuracy
Depending on the frequency of the current
measured: fn ±2Hz
Current measurement: ±0.5% or ±0.002 x I
n
(at currents in the range of 0.01…4.00 x I
n
)
Operate time accuracy
±2.0% or ±0.50 s
Table 49. Circuit breaker failure protection (CCBRBRF) main settings
Parameter
Function
Value (Range)
Step
Current value
(Operating phase current)
CCBRBRF
0.05...1.00 x I
n
0.05
Current value Res
(Operating residual current)
CCBRBRF
0.05...1.00 x I
n
0.05
CB failure mode
(Operating mode of function)
CCBRBRF
1=Current
2=Breaker status
3=Both
CB fail trip mode
CCBRBRF
1=Off
2=Without check
3=Current check
Retrip time
CCBRBRF
0...60000 ms
10
CB failure delay
CCBRBRF
0...60000 ms
10
CB fault delay
CCBRBRF
0...60000 ms
10
Table 48. Circuit breaker failure protection (CCBRBRF)
Operation accuracy
Depending on the frequency of the current
measured: fn ±2Hz
±1.5% of the set value or ±0.002 x I
n
Operate time accuracy
±1.0% of the set value or ±20 ms
Table 51. Three-phase thermal overload (T1PTTR) main settings
Parameter
Function
Value (Range)
Step
Env temperature Set
(Ambient temperature used when
the AmbSens is set to Off)
T1PTTR
-50...100°C
1
Current multiplier
(Current multiplier when function
is used for parallel lines)
T1PTTR
1...5
1
Current reference
T1PTTR
0.05...4.00 x I
n
0.01
Temperature rise
(End temperature rise above
ambient)
T1PTTR
0.0...200.0°C
0.1
Time constant
(Time constant of the line in
seconds)
T1PTTR
60...60000 s
1
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