5-18 F650 Digital Bay Controller GE Multilin
5.3 SYSTEM SETUP 5 SETPOINTS
5
5.3SYSTEM SETUP
This section shows the setpoints related to the system setup definition.
5.3.1 GENERAL SETPOINTS
This section determines the unit configuration regarding its connection to the power system.
Access to these setpoints using EnerVista 650 Setup software is at Setpoint > System Setup > General setpoints.
The corresponding setpoints are shown on the table below:
Table 5–19: GENERAL SETPOINTS
The system rated voltage is used as reference by the voltage restraint in the phase timed overcurrent element.
The Frequency reference marks the voltage channel to which the system Frequency is measured.
The auxiliary voltage setpoint can be selected between VN and VX.
VN means that the V
0
voltage value used by the neutral, ground, and sensitive ground directional elements, as well as
59NH and 59NL elements is going to be measured directly from the fourth voltage transformer of the F650 [A1-A12]. In this
case, the synchronism element will be disabled, as the busbar voltage necessary for its operation would not be available.
If VX is selected in the Auxiliary Voltage setpoint, the measured voltage would be the busbar voltage used for the
synchronism element, in this case the zero sequence voltage used by the neutral, ground and sensitive ground directional
elements. 59N will be calculated from the phase voltages.
SETPOINT > SYSTEM SETUP > GENERAL SETPOINTS
setpoint Description Name Default Value Step Range
Phase CT ratio Phase CT Ratio 1.0 0.1 [1.0 : 6000.0]
Ground CT ratio Ground CT Ratio 1.0 0.1 [1.0 : 6000.0]
Sensitive ground CT ratio Stv Ground CT Ratio 1.0 0.1 [1.0 : 6000.0]
Phase VT ratio Phase VT Ratio 1.0 0.1 [1.0 : 6000.0]
Phase VT connection Phase VT Connection WYE N/A [WYE – DELTA]
Rated voltage Nominal Voltage 100.0 0.1 [1.0 : 250.0]
Rated Frequency Nominal Frequency 50 Hz Hz [50-60]
Phase rotation Phase Rotation ABC N/A [ABC – ACB]
Frequency reference Frequency Reference VI N/A [VI-VII-VIII]
Auxiliary Voltage Auxiliary Voltage VX N/A [VX – VN]
Snapshot Event generation Snapshot Events DISABLED N/A [DISABLED – ENABLED]
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