Section 3: Supervision Functions; 46Bc Broken Conductor; Reference; Operate And Reset Level - Siemens 7SR224 Technical 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
Variation
f
nom
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
©2010 Siemens Protection Devices Limited
20...100%
0.02...1000 s
100 % I
90 % I
± 1 %
≤ 5 %
- 3 Hz to f + 2 Hz
nom
≤ 5 %
cutoff
40 ms
t + t
f basic
± 1 % or ± 20ms
- 3 Hz to f + 2 Hz
nom
≤ 5 %
cutoff
7SR224 Argus Performance Specification
Value
Value
± 5 %
set
± 5 %
curr ,
Value
, ± 1 % or ± 20ms
Chapter 3 Page 41 of 49