Areva MiCOM P921 - Page 371

Technical Guide P92x/EN RS/E11
Test Report
MiCOM P921-P922-P923 Page 19/22
* Delete as appropriate
7.5 “Negative sequence overvoltage protection” function (P922-P923)
Settings
[47] Neg. seq. O/V
Default values
Group 1 Group 2 (P922-P923)
1
st
stage activated No No/Yes * No/Yes *
1
st
neg. seq. O/V
stage
130.0V if H1
480.0V if H2
VV
Time delay type DMT DMT/IDMT * DMT/IDMT *
TMS 1.0
TRESET V2> 0.01s Secs Secs
tV2>= 0.04s Secs Secs
2
nd
stage activated No No/Yes * No/Yes *
2
nd
neg. seq. O/V
stage
130.0V if H1
480.0V if H2
VV
tV2>>= 0.04s Secs Secs
7.6 “Positive sequence undervoltage protection” function (P922-P923)
Settings
[27D] Pos. seq. U/V
Default values
Group 1 Group 2 (P922-P923)
1
st
stage activated No No/Yes * No/Yes *
1
st
pos. seq. U/V
stage
5.00V if H1
20.0V if H2
VV
Time delay type DMT DMT/IDMT * DMT/IDMT *
TMS 1.0
TRESET V1< 0.01s Secs Secs
tV1<= 0.04s Secs Secs
2
nd
stage activated No No/Yes * No/Yes *
2
nd
pos. seq. U/V
stage
5.00V if H1
20.0V if H2
VV
tV1<<= 0.04s Secs Secs