ABB TCC300, User Manual, Page: 522 / 716

• Calculated voltage drop = 5 volts at load level of 150 mA control current.
• V
R
setting = 200/150 X 5 = 6.7 volts (rounded) = 7 volts
To calculate the line drop compensation at any given control current level (I):
• V = I/200 X 7 (setting): If I = 50 mA; V = 50/200 X 7 = 1.75 volts
As with R & X compensation applications, the "block raise" and "deadband" settings are
used for first house protection on all circuits or lines.
For additional information about LDC
‑
Z applications, contact ABB to
obtain Distributech Paper 1/27/05, "Maximizing Automatic Reverse
Power Operations with LTC Transformers and Regulators."
Table 64: Line Drop Compensation Setpoint Ranges
Function Setpoint Range Increment Default Setting
Bandcenter 100.0 V to 135.0 V 0.1 V 120.0 V
Bandwidth 1.0 V to 10.0 V 0.1 V 2.0 V
Definite Delay 1 second to 360 seconds 1 second 10 seconds
Inverse Delay 1 second to 360 seconds 1 second 10 seconds
LDC Resistance -72 V to +72 V 1 V 0 V
LDC Reactance -72 V to +72 V 1 V 0 V
LDC-Z 0 V to 72 V 1 V 0 V
7.4.1 Selecting Line Drop Compensation Type and Settings from the
HMI
1. Press the Up Arrow (SETP Hot Button) pushbutton to wake the unit. The menu will
advance to "SETPOINTS".
2. Press the Down Arrow pushbutton once. The unit will display the following:
Profile Settings
3. Press the Right or Left arrow pushbuttons, as necessary, to navigate to the "Common
Settings" menu.
Editing Setpoints in the wrong Setpoint Profile can cause the control
to operate incorrectly.
4. Verify that the desired Setpoint Profile is indicated, then press the Down arrow
pushbutton, as necessary, to navigate to the "LDC Selection" menu item.
Section 7
1VAC388793-MB A
Setpoints
516 TCC300
User Manual