4.2.8.9
Technical data
Table 422:
67YN Technical data
Characteristic
Value
Operation accuracy
Depending on the frequency of the measured
voltage:
f
n
±2 Hz
±1.5% of the set value or ±0.002 × V
n
Pickup time
1)
Typically 35 ms
Reset time
Typically 40 ms
Trip time accuracy
±1.0% of the set value or ±20 ms
1) Includes the delay of the signal output contact, results based on statistical distribution of 1000
measurements
4.3
Differential protection
4.3.1
Line differential protection with in-zone power transformer 87L
4.3.1.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Line differential protection with in-zone
power transformer
LNPLDF
3Id/I>
87L
4.3.1.2
Function block
87L
I_LOC_C
BLOCK
BLOCK_LS
TRIP
PICKUP
STR_LS_LOC
I_LOC_B
I_LOC_A
STR_LS_REM
I_REM_C
I_REM_B
I_REM_A
OPR_LS_LOC
OPR_LS_REM
OPR_HS_LOC
OPR_HS_REM
BLKD2H_LOC
BLKD2H_REM
ENA_MULT_HS
PROT_ACTIVE
GUID-802DA45B-DC38-44F8-8BA2-ABCCD8338C6D V1 EN
Figure 220:
Function block
Section 4
1MAC059074-MB A
Protection functions
460
615 series ANSI
Technical Manual
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