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In the absence of this field experience,
Siemens recommends:
For solar installations, the maximum
battery life should be set to 1,460 days
(four years) or less due to the day/night
cycling of the battery.
For cooler climates where daily peak
temperatures very rarely go above 86 °F
(30 °C) and usually stays below 77 °F
(25 °C), battery life of 1,825 days (five
years) is appropriate.
For hotter climates where the daily
temperature regularly goes above 86 °F
(30 °C), battery life of 1,460 days (four
years) is appropriate. Maximizing the
shading effect of the power pole is
essential to achieve this battery life.
For very hot climates where most of the
day is spent at high temperatures and
night temperatures are also high, then
battery life will be reduced further. Refer
to Siemens for alternative battery
options.
Solar low-performance time
This is a threshold setting that is the number
of consecutive days of low solar-power
input. If the threshold value is exceeded, an
event is created in the RCU database and
transmitted via the SCADA system. The
purpose of this setting is to alert the control
center of a damaged or dirty solar panel
requiring maintenance. This setting is only
applicable if the power source option is set
as "Solar". Values in the range of 2-10 days
are available. Recommended value is 5 days.
Condition-based command settings
The RCU configuration has parameters that
allow configuration of the excessive cleared
faults functionality. These are:
The time window size specified in
seconds (maximum of 65,535 s, 18.2
hours)
The number of cleared faults that occur
within the time window (maximum of
16).
Fusesaver operator control panel settings
Enable Fusesaver operator control panel
If no RCUs have Fusesaver operator control
panels fitted, then set this to "Disabled". If
one or more sites will have a Fusesaver
operator control panel fitted, then set this to
"Enabled" (the RCU will then auto-detect if a
panel is fitted at a particular site).
Fusesaver operator control panel ignore
remote switch
This setting allows the RCU to be configured
so that Fusesaver operator control panel
controls, such as trip/close or change of
protection mode, will always be allowed
irrespective of the position of the remote
control on switch. Setting options are:
TRUE: The RCU will allow controls from
the Fusesaver operator control panel to
be sent to the Fusesaver irrespective of
the position off the remote control on
switch.
FALSE: The RCU will disable all controls
from the Fusesaver operator control
panel if the remote control switch is on.
Protocol settings
Refer to the relevant protocol manual for
protocol setting option explanations. The
protocol manual addresses:
Radio power-supply settings
Radio/modem serial-interface settings
SCADA-operation settings
Protocol-point configuration
DNP3 configuration.
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