Nortroll LineTroll 110Tmr, Руководство пользователя

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LineTro110Tµr User Guide June 2011 Page 5 of 16
2.4. Reset criteria
The indicator can be set to automatically
resets in two different ways:
1) When the line is energised.
The voltage or current sensor detects that
the line is energised and can in turn reset
the indicator after 30 seconds of
continuously energised line
2) Automatic reset by internal timer.
This timer can be set to:
2, 6, 12 or 24 hours
The indicator can also be reset manually at
any time by use of a magnet.
2.5. Battery lifetime / maintenance
A 3.6V, 16.5 Ah Lithium battery powers the
indicator. When idle, the 110Tµr
consumption is a few micro-amps only. This
gives some 7-10 years battery lifetime in
normal service.
When the unit is activated, approximately
4 mA are consumed, giving more than 1500
hours of flashing capacity. The battery is
fitted with a connector for simple
replacement.
Figure 3: Initial battery capacity.
Figure 4: Remaining battery capacity as a
function of years and temperature
2.6. Low battery warning
During the last few months of the battery’s
life, an amber LED with a low flashing
frequency will indicate that less than 20% of
capacity remains and that there is a need for
battery replacement.
The 110Tµr will send a message “Low
battery” to the Collector.
2.7. Low battery warning reset
In the case of battery replacement the battery
capacity monitoring must be reset. See Ch
5.2.
2.8. Fault sensitivity
The indicator’s di/dt sensitivity is limited by
the load current.
See table in Ch. 7. TECHNICAL
SPECIFICATIONS.
The indicator detects short-circuit- as well as
earth-faults provided that the di/dt current
change exceeds the detection level or
absolute threshold level dependent on
programming.