Advertisement
1 General
The relay complies with the relevant clauses in the following specification :-
•
IEC 60255 - 3
2 Characteristic Energizing Quantity
AC Voltage Vn
Frequency
3 Auxiliary Energising Quantity
3.1 DC Power Supply
Nominal
V
24, 30, 48V
AUX
V
110, 220V
AUX
3.2 DC Status Inputs
Nominal Voltage
30 / 34
48 / 54
110 / 125
220 / 250
NB : the status operating voltage need not be the same as the main energising voltage. For 110/125V or
220/250V working, a standard Argus relay with 48/54V status can be supplied for use with external dropper
resistors as follows:-
Status Input External Resistances
Nominal Voltage
110 / 125V
220 / 250V
Status Input Performance
Minimum DC current for operation
Reset/Operate Voltage Ratio
Typical response time
Typical response time when programmed to energise an
output relay contact
Minimum pulse duration
Each status input has associated timers which can be programmed to give time delayed pick-up and time delayed
drop-off. The drop-off timers have default settings of 20ms, thus providing immunity to an AC input signal. Status
inputs will not respond to the following:
•
250V RMS 50/60Hz applied for two seconds through a 0.1μF capacitor.
•
500V RMS 50/60Hz applied between each terminal and earth.
•
Discharge of a 10μF capacitor charged to maximum DC auxiliary supply voltage.
The inputs meet the requirements of ESI 48-4.
Note : special versions of status input are available for direct operation from 110V and 220V supplies. These do
not comply with the ESI 48-4 specification and will operate with a DC current of less than 10mA.
©2010 Siemens Protection Devices Limited
7SG11 Argus 8 Performance Specification
63.5 / 110 Vrms
50 / 60Hz
Operating Range
18V to 60V dc
88V to 280V dc
Operating Range
18V to 37.5V
37.5V to 60V
87.5V to 137.5V
175 to 280V
Resistor Value (Wattage)
2k7 ± 5% ; (2.5W)
8k2 ± 5% ; (6.0W)
10mA
≥ 90%
< 5ms
< 15ms
40ms
Chapter 2 Page 3 of 9
Advertisement
Chapters
