Potential Transformer Primary Value Confirmation
This screen will only appear following an edit of the
Potential Transformer Primary Value.
If the scaling is not correct, pressing the “ Down”
key will return to the “Potential Transformer Primary
Value Edit” stage with the digits flashing indicating
that the multiplier (decimal point position) should be
selected.
Pressing the “ Up” key sets the displayed value
and will advance to the Current Transformer Primary
Value (See section 3.2.2.)
SysV
SysA
Hz
x1000
kWh
x1000
x1000
3.2.2. Current Primary ValueTransformer
The nominal Full Scale Current that will be displayed as the Line currents. This screen enables the
user to display the Line currents inclusive of any transformer ratios, the values displayed represent
the Current in Amps.
Pressing the “ Up” key accepts the present value and advances to the Current Transformer
Secondary Value (See section 3.2.3)
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 120 MVA in which case the digit range will be
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 0208A.
Pressing the “ Up” key will advance to the Up less
significant digit. (* Denotes that decimal point will be
flashing).
SysV
SysA
Hz
x1000
kWh
x1000
x1000
3.2.3. Current Transformer Secondary Value
CT Secondary value confirmation
This screen will only appears following an edit of CT
secondary value.
If secondary value shown is not correct, pressing the
Down key will return to CT secondary edit stage by
blanking the bottom line of the display.
Pressing “ Up” key sets the displayed value and
will advance to Pulse Rate Edit menu.
(See section 3.2.4)
This screen is used to set the secondary value for
Current Transformer. Secondary value “5” for 5A or
“1” for 1A can be selected. Pressing “ Up” key
accepts the present value and advances to the
Pulse Rate edit menu (See section3.2.4).
Pressing the “ Down” key will enter the CT
Secondary value edit mode and scroll the value
through the values available.
Pressing the “ Up” key will advance to the CT
Secondary value confirmation.
The “Maximum Power” restriction fo 120 MVA refers to 120% of nominal current and 120% of
nominal voltage, i.e, 83.333 MVA nominal system power.
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 when the
“ Up” key is pressed.
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) and the bottom line of the display
will be blanked.
Pressing the “ Up” key sets the displayed value and
will advance to the “Current Transformer Secondary Value
Edit” menu. (See section 3.2.3).
Current
Transformer Primary Value
Current Transformer Primary Value ”
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SysA
Hz
x1000
kWh
x1000
x1000
SysV
SysA
Hz
x1000
kWh
x1000
x1000
SysV
SysA
Hz
x1000
kWh
x1000
x1000
SysV
SysA
Hz
x1000
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x1000
x1000
3.2.4. Pulse Rate
This screen applies to the Relay Output option only. The screen allows user to set the kWh
pulse rate divisor. Divisor values can be selected through 1,10,100,1000.
Pressing “ Up” key accepts the presents value
and advances to the “Reset”menu (See section 3.2.5).
Pressing the “ Down” key will enter the “Pulse rate divisor
Edit” mode and scroll the value through the values 1,10,100,
1000 wrapping back to 1.
Pressing the “ Up” key advances to the “Pulse rate
DivisorCo nfirmation” menu.
Pulse Rate Divisor Confirmation.
This screen will only appear following an edit of the
Pulse rate divisor.
If the Pulse rate shown is not correct, pressing the“
Down” key will return to the “Pulse rate divisor
Edit” stage by blanking the bottom line of the
display.
Pressing “ Up” key sets the displayed value and
will advance to the “Reset” menu.
(See section 3.2.5)
SysV
SysA
Hz
x1000
kWh
x1000
x1000
3.2.5. Resets
The following screens allow the users to reset the Energy(Import/Export), Lo(Min), hI(Max) and all readings.
SysV
SysA
Hz
x1000
kWh
x1000
x1000
Reset (None)
Pressing “ Up” key will not reset and will advance
to Pulse Duration menu.(See sec.3.2.6)
Pressing the “ Down” key will enter the “Reset
Parameter select” mode and scroll the value”
through the parameters and wrapping back
to None.
Pressing “ Up” key advances to Pulse Duration menu.
(see section 3.2.6).
SysV
SysA
Hz
x1000
kWh
x1000
x1000
Reset parameters select, (Reset Energy)
The user has scrolled through to the “E” Energy
value.
Pressing “ Up” key will select the value and
advance to the “Reset Energy Confirmation” Mode.
SysV
SysA
Hz
x1000
kWh
x1000
x1000
Reset Energy Confirmation.
Pressing “ Up” key resets the Energy(Import/Export)
and advances to the Pulse Duration
(see section 3.2.6.)
Pressing the “ Down” key will re-enter the “Reset
Parameter select” mode.
SysV
SysA
Hz
x1000
kWh
x1000
x1000
Reset parameters select, (Reset Lo)
The user has scrolled through to the “Lo” (Min)
Pressing “ Up” key will select the value and
advance to the “Reset Lo Confirmation” Mode.
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