High-Impedance Differential Protection Hixpdif (Ansi 87_A, 87_B, 87_C) - ABB RELION REX640 Technical Manual

Protection functions
HREFPDIF Monitored data
Table 694: HREFPDIF Monitored data
Name Type
START_DUR FLOAT32
HREFPDIF Enum
4.3.5.13 Technical data
Table 695: HREFPDIF Technical data
Characteristic
Operation accuracy
Start time
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode ±1.0% of the set value or ±20 ms
4.3.6 High-impedance differential protection HIxPDIF (ANSI
87_A, 87_B, 87_C)
1
Current before fault = 0.0, f
ments.
2
Includes the delay of the signal output contact.
772
Values (Range)
0.00...100.00
1=on
2=blocked
3=test
4=test/blocked
5=off
1, 2
I = 2.0 × set
Fault
ate value
I = 10.0 × set
Fault
erate value
= 50 Hz, results based on statistical distribution of 1000 measure-
n
Unit
%
Value
Depending on the frequency of the measured
current: f ±2 Hz
n
±1.5% of the set value or ±0.002 × I
Minimum Typical
Oper- 16 ms 21 ms
11 ms 13 ms
Op-
Typically 40 ms
Typically 0.96
<35 ms
1MRS759142 F
Description
Ratio of start time / op-
erate time
Status
n
Maximum
23 ms
14 ms
REX640
Technical Manual