GE Multilin GEK-113000T User Manual

GE Multilin F650 Digital Bay Controller 5-43
5 SETPOINTS 5.4 PROTECTION ELEMENTS
5
5.4.3.3 PHASE DIRECTIONAL UNIT (67P)
The phase directional unit (67P) provides independent elements for each phase, and determines the direction of the
current both in permanence and in fault condition.
Its main function is to apply a blocking signal to overcurrent units for preventing their operation when the current is flowing
in certain direction. In order to determine the direction of current, the unit uses phase current values as operation
magnitude, and phase-to-phase voltage values as polarization magnitude. This means that in order to polarize a phase, we
use the phase-to-phase voltage of the other two phases, known as crossed polarization.
The following table describes the phase directional unit setpoints.
Table 5–40: 67P UNIT SETPOINTS
Function: This setpoint allows enabling or disabling the corresponding directional unit.
MTA: The MTA setpoint corresponds to the Torque angle, which is the rotation applied to
phase-to-phase crossed voltage.
Direction: This setpoint allows selecting the area for the directional unit to operate, either forward
or reverse.
Block Logic: This setpoint allows selecting either permission or block, depending on the logic to be
applied in the event of directional element block.
Polarization Voltage Threshold: this is the minimum voltage considered for the direction calculation. Under this
setpoint, the unit will be blocked.
Snapshot Events: The snapshot event setpoint enables or disables the snapshot event generation for the
phase directional units.
Phase directional element is an independent Protection unit that provides block and Operation signals for each phase.
These signals can be monitored both through the relay HMI or using EnerVista 650 Setup at “Actual > Status > Protection
> Phase Current”
SETPOINT > PROTECTION ELEMENTS > PHASE CURRENT > PHASE DIRECTIONAL >
PHASE DIRECTIONAL 1> PHASE DIRECTIONAL 2 > PHASE DIRECTIONAL 3
SETPOINT DESCRIPTION NAME DEFAULT VALUE STEP RANGE
Function permission Function DISABLED N/A [DISABLED – ENABLED]
Maximum Torque Angle MTA 45º 1 Deg [-90 : +90]
Operation Direction Direction FORWARD N/A [FORWARD – REVERSE]
Block logic Block Logic PERMISSION N/A [BLOCK – PERMISSION]
Polarization voltage threshold Pol V Threshold 40 1 V [0 : 300]
Snapshot event generation Snapshot Events ENABLED N/A [DISABLED – ENABLED]

GE Multilin GEK-113000T Specifications

General

Brand	GE
Model	Multilin GEK-113000T
Category	Controller
Language	English