Siemens 7SR12 Argus - 74 TCS & 74 CCS Trip & Close Circuit Supervision; Reference; Operate and Reset Time; 81 HBL2 Inrush Detector

7SR11 & 7SR12 Performance Specification
©2017 Siemens Protection Devices Limited Chapter 3 Page 56 of 56
3.5 74TCS & 74CCS Trip & Close Circuit Supervision
3.5.1 Reference
Parameter Value
t
d
Delay setting 0, 0.02…60 s
3.5.2 Operate and Reset Time
Attribute Value
t
basic
Element basic operate time
30ms ± 10ms
t
op
Operate time following delay
t
basic
+ t
d
, ± 1 % or ± 10ms
Repeatability
± 1 % or ± 10ms
Variation
-10 °C to +55 °C
≤ 5 %
f
nom
± 5 %
≤ 5 %
3.6 81HBL2 Inrush Detector
3.6.1 Reference
Parameter Value
I
Setting
(Ratio of 2nd Harmonic current to
Fundamental component current)
0.10, 0.11... 0.5
3.6.2 Operate and Reset Time
Attribute Value
t
basic
Element basic operate time
Will pick-up before operation of any protection elem
ent due
to magnetic inrush
Reset Time
Will operate until drop-off of any protection element due to
magnetic inrush