ABB RELION 620 Series Technical Manual page 579

1MRS757644 F
4.3.4.12
4.3.4.13
4.3.5
4.3.5.1
620 series
Technical Manual
Technical data
Table 508: 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
Technical revision history
Table 509: HREFPDIF Technical revision history
Technical revision
B
C
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
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
Change
Internal improvement.
Internal Improvement.
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> 87A
dHi_B> 87B
dHi_C> 87C
573