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To set up the PT primary, proceed as follows:
To accept the currently displayed value, press >>. The screen
will move on to the next Set-up screen (Section 3.7 Potential
Transformer Secondary Value).
Press to change the PT Primary voltage.
Initially all the digits of the present value will be flashing and
the decimal point position will be illuminated. This is to indicate
that initially the ‘multiplier’ must be selected. Press to set the
decimal point position.
Note that the x1000 indicator is on.
Press >> to accept the displayed (decimal point position). The
digits stop flashing and the PT Primary Value screen appears
Set the display to read the value of the PT Primary voltage,
using the method described in Section 3.2 Number Entry
Procedure. The primary voltage that can be set will be
restricted to a value such that, together with the full scale
current value (previously set), the absolute maximum power
(120% of nominal current and voltage) cannot exceed 360
Megawatts.
After the last digit has been accepted, the Confirmation screen
will appear.
This example confirmation screen shows a primary voltage
setting of 2.2 kV.
Press >> to accept the displayed PT Primary Voltage. The next
Set-up screen will appear (Section 3.7 Potential Transformer
Secondary Value).
To change the displayed value, press . The Decimal Point
screen will reappear.
Decimal Point
Digit Edit
Confirmation
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Integra 1540, 1000, 0640, 0440, 0340, 0240 Issue 1 04/03