7SG11 Argus 8 Description of Operation
•
Change of setting (though not the actual setting change). Also indication of which group of settings is
active.
•
Change of state of each output relay.
•
Change of state of each status Input.
•
Change of state of any of the protection functions of the relay.
•
Trip indication reset
•
Trip
test.
•
Trip supply failure.
For a full list of all the events available see Table 6.
4.2.3 Fault Data Records
When issuing a trip output under fault conditions, the Argus 8 relay will illuminate the Trip LED, store a fault
record and display the fault indication screen. The fault indication screen displays a summary of the fault data
record, giving immediate, easily understood information on what has occurred. It displays date (DD/MM), time
(HH:MM:SS) and the poles which were picked up when the trip signal was issued e.g.
25/04 17:25:51
TRIP A B C
This display is held until the TEST/RESET button is pressed, upon which the LED will turn off and any latched
output relays are reset. The relay enters ‘Fault Data Display Mode’ at which point the fault indication screen is
replaced by a more detailed scrolling fault data display. This shows date and time of fault and for each pole the
elements which were picked up and the voltages measured at the time of trip e.g.
FAULT 1 25/04/00 17:25:51.5400 G1, VAB VE1 VE2 VE3 VE4 110.22V, Vo <3VoE1> <3VoE2> 110.215V,FE1
FE2 FE3 FE4 50.499Hz
FAULT 1
<< Fault Data >>
The fault record is viewed in the ‘Fault Data Display Mode’ of the menu system and can be viewed again at a later
date. The relay will store the last 10 fault records, which are numbered 1-10, with 1 being the most recent record.
To view them, scroll downwards using the button.
Depending upon the relay application, some of the protection elements may not be used for tripping purposes but
for alarm purposes. In these cases it would be undesirable for the Argus to light the Trip LED and give fault
indication. It is therefore necessary to define a ‘Fault’ for the cases where a trip is issued. A ‘Fault Trigger’ setting
exists in the Data Storage Menu, which allows a fault condition to be defined by selecting any combination of
output relays as tripping outputs. The Trip LED and the fault record storage will be triggered when any of the
selected output relays are energised. Note that a trip output can still be generated even if the fault trigger setting
is not used, though no trip indication will be given.
Fault records are stored in non-volatile memory.
4.3 Communications
A fibre optic communication port is provided which gives superior EMC performance. Communication is
compatible with the IEC870-5-103 FT 1.2 transmission and application standards. For communication with the
relay via a PC (personal computer) a user-friendly software package, REYDISP EVOLUTION [1], is available to
allow transfer of the following:
•
Relay
Settings
•
Waveform
Records
•
Event
Records
•
Fault Data Records
•
Instrument and meters
•
Control
Functions
Communications operation is described in detail in Section 4 of this manual.
©2010 Siemens Protection Devices Limited
Chapter 1 Page 12 of 20
