Time-Delayed Measured Earth Fault Protection (51G) - Siemens Reyrolle 7SR45 Argus Device Manual
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4.7
Time-Delayed Measured Earth Fault Protection (51G)
Operation
Elements
Setting range I
s
Time multiplier
Time delay (DTL)
Operate level
Reset level
Operate time
(with auxiliary power/load current)
IEC
IEEE/ANSI
DTL
Follower delay
Reset
Inhibited by
17
Add current tolerance of ± 5 % or ±2 % ⋅ I
0.1.
Reyrolle, 7SR45, Device Manual
C53000-G7040-C101-2, Edition 09.2020
(51G)
(whichever is greater) to the operating time tolerance for TMS below 0.1 and I
rated
4.7 Time-Delayed Measured Earth Fault Protection (51G)
Non-directional
Measured earth
0.06 ⋅ I
to 0.80 ⋅ I
rated
rated
Δ 0.01 ⋅ I
rated
0.01 to 10.00
Δ 0.01
0.00 to 15.00 s
Δ 0.01 s
110 % I
, ± 5 % or ± 2 % ⋅ I
s
rated
≥ 90 % I
op
17
± 5 % or ± 50 ms
td, ± 5 % or ± 40 ms
0.00 s to 20.00 s
Δ 0.01 s
IEC/ANSI decaying, 0 s to 60 s
Binary input or inrush detector
Technical Data
below
s
85
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