General Setpoints; System Setup - GE Multilin F650 Instruction Manual

5.3 SYSTEM SETUP

5.3SYSTEM SETUP
This section shows the setpoints related to the system setup definition.
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
SETPOINT > SYSTEM SETUP > GENERAL SETPOINTS
setpoint Description
Phase CT ratio
Ground CT ratio
Sensitive ground CT ratio
Phase VT ratio
Phase VT connection
Rated voltage
Rated Frequency
Phase rotation
Frequency reference
Auxiliary Voltage
5
Snapshot Event generation
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
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.
5-18
Name
Phase CT Ratio
Ground CT Ratio
Stv Ground CT Ratio
Phase VT Ratio
Phase VT Connection
Nominal Voltage
Nominal Frequency
Phase Rotation
Frequency Reference
Auxiliary Voltage
Snapshot Events
voltage value used by the neutral, ground, and sensitive ground directional elements, as well as
F650 Digital Bay Controller
Default Value Step
1.0 0.1
1.0 0.1
1.0 0.1
1.0 0.1
WYE N/A
100.0 0.1
50 Hz Hz
ABC N/A
VI N/A
VX N/A
DISABLED N/A
5 SETPOINTS

5.3.1 GENERAL SETPOINTS

Range
[1.0 : 6000.0]
[1.0 : 6000.0]
[1.0 : 6000.0]
[1.0 : 6000.0]
[WYE – DELTA]
[1.0 : 250.0]
[50-60]
[ABC – ACB]
[VI-VII-VIII]
[VX – VN]
[DISABLED – ENABLED]
GE Multilin