Technical Data; High-Impedance Differential Protection Hixpdif; Identification; Function Block - ABB RELION REX640 Technical Manual

1MRS759142 C
4.3.5.13
4.3.6
4.3.6.1
4.3.6.2
4.3.6.3
REX640
Technical Manual

Technical data

Table 621: HREFPDIF Technical data
Characteristic
Operation accuracy
1)2)
Start time
I
Fault
Operate value
I
Fault
Operate value
Reset time
Reset ratio
Retardation time
Operate time accuracy in definite time mode
1) Current before fault = 0.0, f
2) Includes the delay of the signal output contact

High-impedance differential protection HIxPDIF

Identification

Function description
High-impedance differential protection
for phase A
High-impedance differential protection
for phase B
High-impedance differential protection
for phase C

Function block

GUID-4A313DD8-9933-424A-9ED3-9F0E9EAA466E V1 EN
Figure 379: Function block

Functionality

The high-impedance differential protection function HIxPDIF is a general differential
protection. It provides a phase-segregated short circuit protection for the busbar.
Value
Depending on the frequency of the measured
current: f
±1.5% of the set value or ±0.002 × I
Minimum
= 2.0 × set
16 ms
11 ms
= 10.0 × set
Typically 40 ms
Typically 0.96
<35 ms
±1.0% of the set value or ±20 ms
= 50 Hz, results based on statistical distribution of 1000 measurements
n
IEC 61850
identification
HIAPDIF
HIBPDIF
HICPDIF
Section 4
Protection functions
±2 Hz
n
n
Typical Maximum
21 ms 23 ms
13 ms 14 ms
IEC 60617 ANSI/IEEE C37.2
identification device number
dHi_A> 87_A
dHi_B> 87_B
dHi_C> 87_C
687