Circuit Breaker - ABB REB650 2.1 IEC Product Manual

Busbar protection REB650 2.1 IEC
Product version: 2.1
Table 26. Thermal overload protection, two time constants TRPTTR
Function
Base current 1 and 2
Operate time:
æ 2 2 ö
-
I I
p
ç ÷
t
= ×
t ln
ç ÷
2 2
-
I I
è ø
ref
(Equation 1)
EQUATION1356 V2 EN-US
I = actual measured current
Ip = load current before overload
occurs
Iref = reference load current
Alarm level 1 and 2
Operate current
Reset level temperature
Table 27. Breaker failure protection CCRBRF
Function
Operate phase current
Reset ratio, phase current
Operate residual current
Reset ratio, residual current
Phase current level for blocking of contact function
Reset ratio
Operate time for current detection
Reset time for current detection
Time delay for re-trip at 0 to 2 x I
Time delay for back-up trip at 0 to 2 x I
Time delay for back-up trip at multi-phase start at 0 to 2 x I
Additional time delay for a second back-up trip at 0 to 2 x I
Time delay for alarm for faulty circuit breaker
ABB
Range or value
(30–250)% of IBase
I = load current before overload
p
occurs
Time constant τ = (0.10–500.00)
minutes
(50–99)% of heat content
operate value
IBase
(50–250)% of
(10–95)% of heat content trip
set
set
set
set
M13266-2 v8
Accuracy
±1.0% of I
r
±5.0% or ±200 ms whichever is greater
±2.0% of heat content trip
±1.0% of I
r
±2.0% of heat content trip
M12353-1 v12
Range or value
lBase
(5-200)% of
> 95%
(2-200)% of lBase
> 95%
lBase
(5-200)% of
> 95%
10 ms typically
15 ms maximum
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
(0.000-60.000) s
1MRK 505 362-BEN B
Accuracy
±1.0% of I at I £ I
r r
±1.0% of I at I > I
r
-
±1.0% of I at I £ I
r r
±1.0% of I at I > I
r
-
±1.0% of I at I £ I
r r
±1.0% of I at I > I
r
-
-
-
±0.2% or ±15 ms whichever is
greater
±0.2% or ±15 ms whichever is
greater
±0.2% or ±20 ms whichever is
greater
±0.2% or ±20 ms whichever is
greater
±0.2% or ±15 ms whichever is
greater
35