Functional Performance; Instrumentation; Real Time Clock - Siemens 7SR12 Argus Manual

7SR11 & 7SR12 Performance Specification
1.2.5.2 AC Performance
Attribute
Maximum peak current for
operation
Response time @115V
RMS
Response time when programmed to energise an
output relay contact (i.e. includes output relay
operation)
For AC operation the BI pick-up delay should be set to 0ms and the drop-off delay to 25ms.
For AC operation wiring should be less than 10 metres in length.
Binary inputs are not rated for use on 220-250 V AC.
1.3

Functional performance

Instrumentation

1.3.1
Instrument Value
I Current
V Voltage
W,Var,
Power, real and apparent
VA
pf Power factor
F Frequency
1.3.2

Real Time Clock

1.3.2.1 Internal Clock
The specification below applies only while no external synchronisation signal (e.g. 60870-5-103) is being
received.
Attribute
o
Accuracy (-10 to +55 C)
©2017 Siemens Protection Devices Limited
V = 19 V
BI
AC
Reference
0.1 xIn ≤ I ≤ 3.0 xIn
0.8 xVn ≤ V ≤ 1.2 xVn
V = Vn, I ≥ 0.1 - 2 xIn, pf ≥ 0.8 ± 3% Pn, where Pn = Vn x In
V = Vn, I ≥ 0.1 – 2 xIn, pf ≥ 0.8 ± 0.05
F = 47.5 to 52.5Hz @ 50Hz
and 57 to 63Hz @60Hz
Value
± 3.5 p.p.m
Value
1.5mA
< 16ms
< 26ms
Typical accuracy
± 1 % In
± 1 % Vn
± 10mHz
Chapter 3 Page 12 of 56