50Afd Arc Flash Detector; Reference; Operate And Reset Level; Operate And Reset Time - Siemens 7SR12 Argus Manual

7SR11 & 7SR12 Performance Specification

2.17 50AFD ARC Flash Detector

(Refer to 7XG31 Technical Manual for performance characteristics)

Reference

2.17.1
Parameter
50 AFD Setting

Operate and Reset Level

2.17.2
Attribute
I Operate level (no DC transient)
op
Transient overreach
(X/R ≤ 100)
Reset level
Repeatability
Variation

Operate and Reset Time

2.17.3
Attribute
t
50AFD Overcurrent operate time
basic
t AFD Zone Operate time (Flash & 50AFD)
op
Repeatability
Disengaging time
©2017 Siemens Protection Devices Limited
Value
1, 2,...10 xIn
-10 °C to +55 °C
+ 2 Hz ≤ 5 %
f - 3 Hz to f
nom nom
Value
100 % Is, ± 10 %
≤ -30%
≥ 95 % I
op
± 5 %
≤ 5 %
Value
10 ms – 16 ms
15 ms – 25 ms
± 10 ms
< 50 ms
Chapter 3 Page 44 of 56