Siemens Argus 7SR21 - Operate and Reset Level (59 NIT); Operate and Reset Time (59 NIT)

7SR21 & 7SR22 Performance Specification
Unrestricted Page 50 of 68 © 2013 Siemens Protection Devices Limited
2.20.5 Operate and Reset Level (59NIT)
Attribute Value
V
op
Operate level
105 % Vs, ± 2 % or ± 0.5 V
Reset level
³ 95 % V
op
or ± 0.25 V
Repeatability
± 1 %
Variation
-10 °C to +55 °C
£ 5 %
f
nom
- 3 Hz to f
nom
+ 2 Hz
£ 5 %
2.20.6 Operate and Reset Time (59NIT)
Attribute Value
t
basic Starter operate time (³ 2xVs) 65 ms, ± 20 ms
t
op
Operate
time
char = IDMTL
[ ]
1
M
t
Vs
0V3
op
-
= , ± 5 % or ± 65 ms
char = DTL
t
d
, ± 1 % or ± 40 ms
Reset Time
char = IDMTL
t
res
, ± 5 % or ± 65 ms
char = DTL
t
res
, ± 1 % or ± 40 ms
Repeatability
± 1 % or ± 20 ms
Overshoot time < 40 ms
Disengaging time < 50 ms