Order of Harmonic
The user enters the order of harmonic restraint that the relay is set for.
For example, a second harmonic restraint would be set to 2, third
harmonic 3 and fifth harmonic 5. The default value is 2.
% Slope
Enter the % slope of the relay. For example, a 30 % slope , enter value
30. The default value is 25.
Restraint I
Enter the desired restraint current that will be used in the slope test. The
default value is 10 Amperes.
Relay Type
Selection is either electromechanical or solid state. If solid state is
entered , the user will be required to press the stop button when the relay
LED lights up upon pickup.
Polarizing I
Some electromechanical relays require a polarizing current be applied
prior to conducting pickup tests. Enter the desired polarizing current. The
default value is 50 Amperes.
Through Fault I
This will be the current applied in the through fault test. Consult relay
manufacturer literature for appropriate test current value. Default value is
20 Amperes.
Target Tap
The Target Tap has selectable values with a factory default of 0.2 DC
amperes.
Relay Model Cal.
The Westinghouse HU relay requires a different calculation for harmonic
restraint. If testing an HU select HU, the default is All Other.
Inst. Tap
Enter the instantaneous trip current value. The default value is 40
Amperes.
Test Configuration
This will take the user to a new screen. It was added to simplify the
Relay Settings screen. The Test Configuration Screen provides
additional input parameters for more complex tests, and for adjusting
ramping and pulse ramping values.
The bottom of the screen has common buttons.
File:
This selection will take the user to the File
Manager.
Test Menu:
This selection will return the controller to the
Test Menu Screen.
Main Menu:
This selection will return the controller to the
Main Menu:
Test Configuration
The Test Configuration button will take the user
to the Test Configuration Menu. This menu is
used to set additional test parameters such as
ramp increment and start and stop points.
These test parameters should not need to be
adjusted.
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