of the 78 pickup setting. A setting of 6° is recommended by the G.59 standard for connection of distributed
generation to an electricity supply system, and settings of 8° to 12° are typical.
When the exported power to the mains network is very low, there is a risk that the drop in load will be insuffi-
cient to cause a vector shift, or will cause a vector shift of limited extent. Generally it is required that exported
power will be of the order of 10 % to 20 % of total power generated before a LOM will always be detected.
Settings Menu
Functions > Function Config
Parameter Range Settings
Default Gn1 Gn2 Gn3 Gn4
78VS Vector Shift Enabled
Disabled
Disabled
Functions > Protection > 78VS > Gn 78VS-n
Parameter Range Settings
Default Gn1 Gn2 Gn3 Gn4
Element Enabled
Disabled
Disabled
Setting 2° to 30°, Δ 0.5° 10°
IEC 61850 Functional Information Mapping
A78VSPPAM*.Mod
Information
78VS Vector Shift Enabled (Function Config) x 0 1 1
Element Disabled 1 x 0 0
Element Inhibited x x 1 0
A7VS8PPAM*.Mod.stVal 5 5 2 1
Device Annunciation ON/TRUE: 1
OFF/FALSE: 0
Irrelevant: x
IEC 61850 Value ON: 1
BLOCKED: 2
TEST: 3
TEST/BLOCKED: 4
OFF: 5
A78VSPPAM *.Health
Information
Device Healthy 0 1
A78VSPPAM*.Health.stVal 3 1
5.26.5
5.26.6
Protection and Automation Functions
5.26 78VS Voltage Vector Shift
340 Reyrolle 7SR5, Overcurrent Protection Device, Device Manual
C53000-G7040-C014-1, Edition 11.2019
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