ABB RET620, Руководство по эксплуатации продукта

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Table 61. Circuit breaker failure protection (CCBRBRF)
Characteristic Value
Operation accuracy Depending on the frequency of the current measured: f
n
±2 Hz
±1.5% of the set value or ±0.002 x I
n
Operate time accuracy ±1.0% of the set value or ±20 ms
Retardation time < 20 ms
Table 62. 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 63. Arc protection (ARCSARC)
Characteristic Value
Operation accuracy ±3% of the set value or ±0.01 x I
n
Operate time Minimum Typical Maximum
Operation mode = "Light
+current"
1)2)
12 ms 3)
7 ms
4)
14 ms 3)
8 ms
4)
16 ms 3)
11 ms
4)
Operation mode = "Light only" 2)
9 ms
3)
4 ms
4)
10 ms
3)
6 ms
4)
12 ms
3)
6 ms
4)
Reset time
< 40 ms 3)
< 55 ms
4)
Reset ratio Typical 0.96
1)
Phase start value = 1.0 x I
n
, current before fault = 2.0 x set
Phase start value, f
n
= 50 Hz, fault with nominal frequency, results based on statistical distribution of 200 measurements
2) Includes the delay of the heavy-duty output contact
3) Normal power output
4) High-speed output
Transformer Protection and Control 1MRS757846 A
RET620
Product version: 2.0
ABB 39