Internal Supervision; Linesman Mode - Siemens 7SG11 Manual

Setting name
O/P Relay Test

2.14.3 Internal Supervision

The Argus relay applies comprehensive supervision of its internal operation, both hardware and software. In the
event of any failure all outputs are de-energised and the relay is shut down in a controlled manner. Supervision
includes a power supply watchdog, code execution watchdog, memory checks by checksum, memory addressing
checks and processor and ADC health checks.
While the relay is healthy an output can be given as specified by the Output Relay:Prot. Healthy, setting. By allocating
this output to a normally closed contact, i.e. any output relays 1 to 3, an alarm can be generated by relay de-
energisation or Protection Healthy failure. Note: relay withdrawal will also generate an alarm as all normally
closed contacts have 'CT' shorting contacts which close when the relay is withdrawn from its case.
If an internal failure is detected a relevant identifying message will be displayed if possible and the Argus will reset
and restart in an attempt to restore normal operation, this will result in de-energisation of the protection healthy
contact and flashing of the protection healthy LED. Reset takes about 2 - 3 seconds.
Each time power is applied to the relay or the relay resets, internal Power On and Reset counters are
incremented; the total count is shown in Instruments:Power On Count, . An alarm level can be set in the CB
Maintenance:Power On Count Alarm and an output will be raised if the count is exceeded, this can be mapped to an
output relay Output Relay: Power On Count.. This can be useful in tracing problems with substation batteries or relays.
The count can be reset either from the Instrument display by pressing TEST/RESET, use up /down keys to
confirm ' Y ', press TEST/RESET again; or, from the CB Maintenance menu using the ENTER and up /down
keys to select ' Y ' and confirm.
Table 2-29 Internal Supervision Setting
Sub-menu: O/P Relay Config.
Setting name
Gn Prot. Healthy
Gn PowerOn Count
Sub-menu: CB Maintenance
Setting name
Power On Count Reset
Power On Count Alarm

2.15 Linesman Mode

Argus 4 and Argus 6 only
Linesman mode is a special mode available on Argus 4 and Argus 6 relays which provides a limited command set
that is intended to allow a user (Linesman) simple access to enable and disable various features when working on
the line, particularly for live line working.
Access to a selected set of settings from various parts within the menu system is provided in the Linesman Mode
menu, together with some commands. These settings differ slightly from other settings in that they are not
password protected and can be accessed and changed using the right ( ) key, this allows them to be set with the
relay front cover in place.
©2013 Siemens Protection Devices Limited
Range (bold = default)
OFF, Protection Healthy,
all P/F, E/F, SEF overcurrent element
outputs
all voltage elements,
all mapped status, Alarms, counters,
hand & pulsed relays, Lockout alarm,
Close pulse, Aux Close, ARC active,
Reclaimed, SA Blocked, SA Alarm, SA
Trip,
Range (bold = default)
_, 1 for each output contact
(default: 1 _ _ _ _ _ _ _ _ _ _)
_, 1 for each output contact
(default: 1 _ _ _ _ _ _ _ _ _ _)
Range (bold = default)
NO, YES
OFF, 1, 2...999
7SG11 Argus Technical Reference
Units Notes
YES / NO confirmation is
required.
Units Notes
Units Notes
YES / NO confirmation is
required.
P20007 Page 52 of 71