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Load Tap Changer Monitor (509ITM-300)
There are two parts to the Load Tap Changer Monitor. The first is the setup, which is
described in the
Make sure you familiarize yourself with these sections before using the Load Tap
Changer feature.
The second part of the monitor is the normal operation of the Load Tap Changer System.
Once the LTC feature has been configured, the 509ITM will begin monitoring all of the LTC
functions. The automatic scrolling display will show the position of the tap changer, current
of the tap motor, current of the tap load, and the temperature of both the RTD inputs (main
tank and LTC tank) and, if selected, their differential value.
When the tap motor is not active, the operator will view a zero value for the measured
current. This will not cause the LTC alarm relays to actuate because the Load Tap Changer
system only uses the active inrush and steady-state current values for comparing against
high and low set point values. To be able to view the active values and their maximum and
minimum values, the operator must press
MENU
and enter the MENU Mode. Upon entering
for a visual overview of the MENU Mode), the operator
can go to the LTC column.
If the header of the column displays that the LTC monitor is inactive, then the LTC Monitor
has either not been installed or the user did not make it active. See the software manual for
making a LTC active. If it is active, the operator can travel up and down the column to view
the present active values, maximum and minimum values, set points, actuation counts, total
run time, and the differential set point amount. Press
MENU
to leave the MENU Mode.
Front Panel Control
Summary of Contents for 509ITM Series
Page 26: ...26 www qualitrolcorp com Current Input Wiring...
Page 55: ...55 www qualitrolcorp com 3 Continue with the setup procedure...
Page 101: ...101 www qualitrolcorp com...
Page 144: ...144 www qualitrolcorp com The following window will appear...
Page 167: ...167 www qualitrolcorp com The Customer Setup window displays 4 Click Load Tap Changer...
Page 178: ...178 www qualitrolcorp com Appendix...
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