ABB Relion 620 Series - Transient-Intermittent Earth-Fault Protection INTRPTEF

4.2.2.14 Technical revision history
Table 425: DEFHPDEF Technical revision history
Technical revision Change
B Maximum value changed to 180 deg for the
Max forward angle setting
C Added a setting parameter for the "Meas-
ured Io" or "Calculated Io" selection and set-
ting parameter for the "Measured Uo", "Cal-
culated Uo" or "Neg. seq. volt." selection for
polarization.
Operate delay time and Mini-
mum operate time changed from 60 ms to
40 ms. The sector default setting values are
changed from 88 degrees to 80 degrees.
D Step value changed from 0.05 to 0.01 for the
Time multiplier setting.
E Unit added to calculated operating current
output (I_OPER).
F Added setting Pol quantity .
Table 426: DEFLPDEF Technical revision history
Technical revision Change
B Maximum value changed to 180 deg for the
Max forward angle setting.
Start value step changed to 0.005
C Added a setting parameter for the "Meas-
ured Io" or "Calculated Io" selection and set-
ting parameter for the "Measured Uo", "Cal-
culated Uo" or "Neg. seq. volt." selection for
polarization. The sector default setting val-
ues are changed from 88 degrees to 80 de-
grees.
D Step value changed from 0.05 to 0.01 for the
Time multiplier setting.
E Unit added to calculated operating current
output (I_OPER).
F Added setting Pol quantity . Minimum value
for Operate delay time and Minimum operate
time changed from “60 ms” to “50 ms”. De-
fault value for Operate delay time and Mini-
mum operate time
changed from “60 ms” to
“50 ms”.
4.2.3 Transient-intermittent earth-fault protection INTRPTEF
1MRS757644 H
Protection functions
620 series
Technical Manual
419