20
restricted, the value will wrap. Example: If primary value
of PT is set as 400kV (max value) then primary value of Current is restricted to 1736A.
Pressing the “ Up” key will advance to the next less significant digit. (* Denotes that
decimal point will be flashing).
Pressing the “ Down” key will enter the “Current
Transformer Primary Value Edit” mode. This will scroll the
value of the most significant digit from 0 through to 9,
unless the presently displayed Current Transformer
Primary Value together with the Potential Transformer
Primary Value results in a maximum power of greater
than 1000 MVA in which case the digit range will be
when the “ Up” key is pressed.
The “Maximum Power” restriction of 1000 MVA refers to 120% of nominal current and 120%
of nominal voltage, i.e, 694.4 MVA nominal power per phase.
When the least significant digit had been set, pressing the “ Up” key will advance to the
“Current Transformer Primary Value Confirmation” stage.
The minimum value allowed is 1, the value will be forced to 1 if the display contains zero
Current Transformer Primary Value Confirmation.
This screen will only appear following an edit of the
.
If the scaling is not correct, Pressing the “ Down” key
will return to the “
Edit
stage with the most significant digit highlighted (associated
decimal point flashing).
Current
Transformer Primary Value
Current Transformer Primary Value
x1000
kWh
V
ON
I
REV
3600 Imp/KWh
x1000
kWh
V
ON
I
REV
3600 Imp/KWh
”
Pressing the “ Up” key sets the displayed value and
will advance to the “Energy Display on Modbus” menu.(See section 3.2.1.5)
L1
L2
L3
L1
L2
L3