ABB RELION 620 Series Technical Manual page 800

Section 4
Protection functions
4.12.2.9
794
Name Type
COUNT_BR2_A INT32
COUNT_BR1_B INT32
COUNT_BR2_B INT32
COUNT_BR1_C INT32
COUNT_BR2_C INT32
FAIL_COUNT INT32
CUBPTOC Enum
I-unb FLOAT32
Technical data
Table 758: CUBPTOC Technical data
Characteristic
Operation accuracy
1)2)
Start time
Reset time
Reset ratio
Operate time accuracy in definite time mode
Operate time accuracy in inverse definite
minimum time mode
Suppression of harmonics
1) Fundamental frequency current = 1.0 × I
value , results based on statistical distribution of 1000 measurements
2) Includes the delay of the signal output contact
Values (Range) Unit
0...2147483647
0...2147483647
0...2147483647
0...2147483647
0...2147483647
0...2147483647
1=on
2=blocked
3=test
4=test/blocked
5=off
0.00...5.00 xIn
Value
Depending on the frequency of the measured
current: f ±2 Hz
n
1.5% of the set value or 0.002 × I
Typically 26 ms
Typically 40 ms
Typically 0.96
1% of the theoretical value or ±20 ms
5% of the theoretical value or ±20 ms
DFT: -50 dB at f = n × f
, current before fault = 0.0 × I
n
1MRS757644 F
Description
Number of element
failures in branch2
phase-A
Number of element
failures in branch1
phase-B
Number of element
failures in branch2
phase-B
Number of element
failures in branch1
phase-C
Number of element
failures in branch2
phase-C
Total number of element
failures
Status
Measured neutral
unbalance current
amplitude
n
, where n = 2,3,4,5,..
n
Start
, fault current = 2.0 ×
n
620 series
Technical Manual