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Siemens 7SR18 Solkor - Time Delayed Overcurrent; Reference; Operate and Reset Level

Siemens 7SR18 Solkor
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7SR18 Performance Specification
Unrestricted Page 26 of 44 ©2018 Siemens Protection Devices Limited
2.7 51 Time Delayed Overcurrent
2.7.1 Reference
Parameter Value
Is Setting 0.05, 0.06… 2.5 xIn
char Characteristic setting
IEC-NI, -VI, -EI, -LTI;
ANSI-MI, -VI, -EI; DTL
Tm Time Multiplier setting 0.025, 0.05… 1.6, 1.7… 5, 6… 100
t
d
Delay setting 0, 0.01… 20 s
t
res
Reset setting ANSI DECAYING, 0, 1… 60 s
I
Applied Current
(for operate time)
IDMTL 2 to 20 x ls
DTL 5 x Is
2.7.2 Operate and Reset Level
Attribute Value
I
op
Operate level
105 % Is, ± 4 % or ± 1% In
Reset level
95 % I
op
Repeatability
± 1 %
Variation
-10 °C to +55 °C
5 %
f
nom
± 5 %
5 %

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