Siemens 7SR51 Device Manual page 533

Operate and Reset Time
t
basic
t
op
Reyrolle 7SR5, Overcurrent Protection Device, Device Manual
C53000-G7040-C014-1, Edition 11.2019
Attribute
Element basic operate time
Operate time char = IEC-NI,
IEC-VI,
IEC-EI,
IEC-LTI
char = ANSI-MI,
ANSI-VI,
ANSI-EI
char = DTL
Reset time ANSI decaying
IEC decaying
t
reset
Repeatability
Overshoot time
Disengaging time
10.20 51GS Time-Delayed Sensitive Earth Fault – Measured
Value
20 ms ± 20 ms
, ± 5 % or ± 30 ms
For char = IEC-NI: K = 0.14, α = 0.02
IEC-VI: K = 13.5, α = 1
IEC-EI: K = 80, α = 2
IEC-LTI: K = 120, α = 1
, ± 5 % or ± 30 ms
For char = ANSI-MI: A = 0.0515, B = 0.114,
P = 0.02
ANSI-VI: A = 19.61, B = 0.491, P = 2
ANSI-EI: A = 28.2, B = 0.1217, P = 2
t , ± 1 % or ± 20 ms
delay
, ± 5 % or ± 30 ms
For char = ANSI-MI: R = 4.85
ANSI-VI: R = 21.6
ANSI-EI: R = 29.1
, ± 5 % or ± 50 ms
For char = IEC-NI: R = 9.7
IEC-VI: R = 43.2
IEC-EI: R = 58.2
IEC-LTI: R = 80
t , ± 1 % or ± 20 ms
reset
± 1 % or ± 20 ms
< 40 ms
< 50 ms
Technical Data
533