Section 3: Supervision Functions; 46Bc Broken Conductor; Reference; Operate And Reset Level - Siemens 7SR18 Solkor Manual

Section 3: Supervision Functions

3.1

46BC Broken Conductor

3.1.1

Reference

Parameter
NPS to PPS ratio
t Delay setting
f
3.1.2

Operate and Reset Level

Attribute
I Operate level
curr
Reset level
Repeatability
-10 °C to +55 °C
f
nom
Variation
harmonics to f
3.1.3

Operate and Reset Time

Attribute
t Basic operate time 1x In to 0 A
basic
Operate time
Repeatability
f
nom
Variation
harmonics to f
Unrestricted ©2018 Siemens Protection Devices Limited
Value
20,21...100 %
0.03,04,20.0,20.1,100,101,1000,1010.....14400 s
Value
100 % I
90 % I
± 1 %
£ 5 %
± 5 %
£ 5 %
cutoff
Value
40 ms
t + t
f basic
± 1 % or ± 20 ms
± 5 %
£ 5 %
cutoff
7SR18 Performance Specification
± 5 %
set
± 5 %
curr ,
, ± 1 % or ± 20 ms
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