2Nd Harmonic Block/Inrush Restraint (81Hbl2) - Siemens Reyrolle 7SR45 Argus Device Manual

Technical Data

4.10 2nd Harmonic Block/Inrush Restraint (81HBL2)

4.10

2nd Harmonic Block/Inrush Restraint (81HBL2)

81HBL2 Inrush Setting
(Ratio of 2 nd harmonic current to fundamental
component current)
81HBL2 Inrush Release Block
t element basic operate time
basic
Reset time
NOTE
i
i
For better inrush accuracy, the fundamental current should be minimum of 0.15 ⋅ I
phase.
88
0.10 ⋅ I to 0.50 ⋅ I
Where I = I /I
2 1
0.3 ⋅ I to 20.0 ⋅ I
rated rated
Δ 0.1 ⋅ I
rated
Picks up before operation of any protection element
due to magnetic inrush
Operates until drop-off of any protection element due
to magnetic inrush
Reyrolle, 7SR45, Device Manual
C53000-G7040-C101-2, Edition 09.2020
in at least one
rated