4.2.3.10 Technical revision history
Table 377: 67NIEF Technical revision history
Technical revision
Change
B Minimum and default values changed to 40 ms for
the
Trip delay time
setting
C The
Minimum trip current
setting is added.
Correction in IEC 61850 mapping: DO BlkEF
renamed to InhEF. Minimum value changed from
0.01 to 0.10 (default changed from 0.01 to 0.20) for
the
Voltage pickup value
setting. Minimum value
changed from 0 ms to 40 ms for the
Reset delay time
setting.
D
Voltage pickup value description changed from
"Voltage pickup value for transient EF" to "Voltage
pickup value" since the pickup value is effective in
both operation modes. Added support for calculated
V0. Vg or V0 source (measured/calculated) can be
selected with "Vg or V0".
Voltage pickup value
setting minimum changed from 0.10 to 0.05.
E
Min trip current
setting scaling corrected to RMS
level from peak level.
4.2.4 Admittance-based ground-fault protection 21YN
4.2.4.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Admittance-based ground-fault
protection
EFPADM Yo> -> 21YN
4.2.4.2 Function block
21YN
IG TRIP
VG PICKUP
BLOCK
RELEASE
GUID-1F42E8A5-E97D-4C47-BF81-87E82687CC36 V1 EN
Figure 174: Function block
Section 4 1MAC059074-MB A
Protection functions
370 615 series ANSI
Technical Manual
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