ABB TCC300, User Manual, Page: 29 / 716

All setpoints are stored in nonvolatile memory which is unaffected by control voltage
disturbances.
Three Tapchanger operation counters are provided:
• Presettable Operations
• Counter Resettable Operations
• Counter Presettable Neutral Counter
Ten LEDs are used to indicate Tapchanger Band Status, timing for RAISE and LOWER,
REV PWR Reverse Power detection, CPU OK, ALARM, V/RED Voltage Reduction in
Effect, MANUAL, LOCAL, and TX/RX.
The alphanumeric display and six push button interface provides complete front panel
access to the scrolling menu program. The control applies to tapchangers with ±16 taps
and one neutral position.
A Voltage Reduction push button allows the user to locally apply up to three levels of
Voltage Reduction from the control front panel.
2.2 Adapter panel or surface mounting kit
An adapter panel or an M
‑
2050 or M
‑
2054 Surface Mounting Kit must be used with the
TCC300 Tapchanger Control. Each panel adapts TCC300 as a transformer and regulator
control replacement and provides the external connections necessary for operation via
terminal blocks on the rear of the adapter panel. Contact ABB for a list of adapter panels
that are currently available. See the application guides of the specific adapter panel for the
mounting details.
1VAC388793-MB A
Section 2
TCC300 overview
TCC300 23
User Manual