ABB RET615 Product Manual page 35

ABB
Transformer Protection and Control
RET615
Product version: 2.0
Table 39. Circuit breaker failure protection (CCBRBRF) main settings
Parameter
Current value
(Operating phase
current)
Current value Res
(Operating residual
current)
CB failure mode
(Operating mode of
function)
CB fail trip mode
Retrip time
CB failure delay
CB fault delay
Table 40. Arc protection (ARCSARC)
Characteristic
Operation accuracy
Operate time
Reset time
Reset ratio
1) Phase start value = 1.0 x I
frequency, results based on statistical distribution of 200 measurements
2) Includes the delay of the heavy-duty output contact
Function
CCBRBRF
CCBRBRF
CCBRBRF
CCBRBRF
CCBRBRF
CCBRBRF
CCBRBRF
Operation mode =
1)2)
"Light+current"
Operation mode =
2)
"Light only"
, current before fault = 2.0 x set Phase start value, f
n
Value (Range)
0.05...1.00 x I
n
0.05...1.00 x I
n
1=Current
2=Breaker status
3=Both
1=Off
2=Without check
3=Current check
0...60000 ms
0...60000 ms
0...60000 ms
Value
±3% of the set value or ±0.01 x I
Minimum Typical
9 ms 12 ms
9 ms 10 ms
< 40 ms
Typical 0.96
= 50 Hz, fault with nominal
n
1MRS756891 B
Issued: 01.10.2009
Step
0.05
0.05
10
10
10
n
Maximum
15 ms
12 ms
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