ABB REL650 Applications Manual page 305

1MRK 506 334-UUS A
Application manual
Configuration parameters for selection of measuring phase of the voltage for line 1 and 2
respectively, which can be a single-phase (phase-neutral) or two-phase (phase-phase)
voltage or positive sequence.
CBConfig
This configuration setting is used to define type of voltage selection. Type of voltage
selection can be selected as:
• no voltage selection
• single circuit breaker with double bus
• breaker-and-a-half arrangement with the breaker connected to busbar 1
• breaker-and-a-half arrangement with the breaker connected to busbar 2
• breaker-and-a-half arrangement with the breaker connected to line 1 and 2 (tie
breaker)
VRatio
The VRatio is defined as VRatio = bus voltage/line voltage. This setting scales up the line
voltage to an equal level with the bus voltage.
PhaseShift
This setting is used to compensate the phase shift between the measured bus voltage and
line voltage when:
• a. different phase-neutral voltages are selected (for example UL1 for bus and UL2 for
line);
• b. one available voltage is phase-phase and the other one is phase-neutral (for
example UL1L2 for bus and UL1 for line).
The set value is added to the measured line phase angle. The bus voltage is reference
voltage.
If single phase UL1 or two-phase UL1L2 is not available, parameters
PhaseShift and URatio can be used to compensate for other choices.
Section 11
Control
299