51G Time-Delayed Earth Fault – Measured
Reference
Parameter
Value
I
set
Setting
0.05 to 2.5 ⋅ I
rated
, Δ 0.01
I
Applied current (for
operate time)
IDMTL
0 to 2 ⋅ I
set
(switched)
0 to 20 ⋅ I
set
(switched)
DTL
0 to 5 ⋅ I
set
(switched)
char
Characteristic
IEC-NI, -VI, -EI, -LTI;
ANSI-MI, -VI, -EI; DTL
Tm
Time multiplier (IEC/ANSI)
0.025 to 1.6, Δ 0.025
1.6 to 5, Δ 0.1
5 to 100, Δ 1
t
delay
Delay setting
0 to 20 s, Δ 0.01 s
Minimum operate time
0 to 20 s, Δ 0.01 s
Follower DTL
0 to 20 s, Δ 0.01 s
t
reset
Reset setting
ANSI decaying
IEC decaying
DTL: 0 to 60 s
Operate and Reset Level
Attribute
Value
I
op
Operate level
105 % I
set
: ± 4% or ± 1 % I
rated
Reset level
≥ 95 % I
op
Repeatability
± 1 %
Variation IEC
60255-1
-10 °C to +55 °C
≤ 5 %
f
rated
± 5 %
≤ 5 %
10.17
Technical Data
10.17 51G Time-Delayed Earth Fault – Measured
Reyrolle 7SR5, Transformer Protection Device, Device Manual
481
C53000-G7040-C015-1, Edition 11.2019
Содержание Reyrolle 7SR5
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