Siemens 7SR12 Argus User Manual

7SR11 & 7SR12 Performance Specification
©2017 Siemens Protection Devices Limited Chapter 3 Page 9 of 56
AC supply loading
Attribute
VA (RMS)
Voltage
100
110
115
120
200
230
Quiescent Relay (inc. ‘PROT HEALTHY’ LED)
7.5
7.5
7.5
7.5
8
9
Backlight
2
2
2
2
2.1
2.1
Per LED – (Red or Green)
0.04
0.04
0.04
0.04
0.04
0.04
Per LED – Yellow
0.08
0.08
0.08
0.08
0.08
0.08
Per Binary Output
0.6
0.6
0.6
0.6
0.7
0.7
Optional IEC 61850 Comms Interface
5
5
5
5
5.5
5.5
1.2.1.2 Operational Features
Attribute Value
Comments
0% Dip Withstand Period
50ms
Dip Immunity Acquisition Period 5minutes
Typical time after switch on to
attain claimed immunity to dips
NOTE: Dips in supply that fall below the minimum voltage for a period greater than the
0% Dip With stand Period will invoke a relay reset.
During conditions of auxiliary input voltage variations which are not described
(1)
in section 1.4.3.1, the relay
may enter a safety protection mode where a power supply shutdown occurs. This condition is designed to
protect the power supply from damage as well as prevent internal relay faults from developing into dangerous
situations.
Once the relay has entered this safety mode, it may be necessary to reduce the auxiliary input voltage to zero
volts for up to 30 seconds before re-application of the auxiliary supply will cause the relay to power up and
operate normally.
(1) Using fuses as on/off switches or allowing batteries to run at very low cell voltages for extended periods
and then attempting to re-charge them are examples of such auxiliary supply conditions.

Siemens 7SR12 Argus Specifications

General

Brand	Siemens
Model	7SR12 Argus
Category	Protection Device
Language	English