Siemens Argus 7SR21 Technical Manual

Also see for Argus 7SR21: Installation guide Manual Manual Manual Manual

Contents

7SR21 & 7SR22 Performance SpecificationUnrestricted Page 28 of 68 © 2013 Siemens Protection Devices LimitedOperate and Reset Level (46IT)Attribute ValueIop Operate level 105 % Is, ± 4 % or ± 1% InReset level ³ 95 % IopRepeatability ± 1 %Variation -10 °C to +55 °C £ 5 %fnom - 3 Hz to fnom + 2 Hz £ 5 %2.7.5 Operate and Reset Time (46IT)Attribute ValueStarter operate time (³ 2xIs) 35 ms, ± 10 mstop Operate timechar = IEC-NI,IEC-VI,IEC-EI,IEC-LTI[ ] TmKtIsIop ´-=1a , ± 5 % or ± 50 ms,for char = IEC-NI : K = 0.14, a = 0.02IEC-VI : K = 13.5, a = 1.0IEC-EI : K = 80.0, a = 2.0IEC-LTI : K = 120.0, a = 1.0char = ANSI-MI,ANSI-VI,ANSI-EI[ ] TmBAt PIsIop ´úúûùêêëé+-=1, ± 5 % or ± 50 ms,for char = ANSI-MI : A = 0.0515, B = 0.114, P = 0.02ANSI-VI : A = 19.61, B = 0.491, P = 2.0ANSI-EI : A = 28.2, B = 0.1217, P = 2.0char = DTL td, ± 1 % or ± 20 msReset time ANSI DECAYING [ ] TmRtIsIres ´-= 12 , ± 5 % or ± 50 ms,for char = ANSI-MI : R = 4.85ANSI-VI : R = 21.6ANSI-EI : R = 29.1tres tres, ± 1 % or ± 20 msRepeatability ± 1 % or ± 20 msOvershoot time < 40 msDisengaging time < 60 ms