Note : the flashing decimal point indicates the cursor position, a steady decimal point will be present
to identify the scaling of the number until the cursor position coincides with the steady decimal point
When the least significant digit has been set pressing the “ Up” key will advance to the
Screen showing display of 0.120 kV i.e. 120 Volts indicating steady decimal point and cursor
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
Pressing the “ Up” key accepts the present value and advances to the Current Transformer
the presently displayed Potential Transformer Primary
Value together with the Current Transformer Primary
Value, previously set, would result in a maximum power
of greater than 360 MVA in which case the digit range
Pressing the “ Up” key accepts the present value
at the cursor position and advances the cursor to the
(* Denotes that decimal point will be flashing).
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
Pressing the “ Up” key sets the displayed value
and will advance to the Current Transformer Primary
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 ina maximum power of greater
than 360 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
Pressing the “ Down” key will enter the “Current
The “Maximum Power” restriction fo 360 MVA refers to 120% of nominal current and 120% of
When the least significant digit had been set, pressing the “ Up” key will advance to the
The minimum value allowed is 1, the value will be forced to 1 if the display contains zero when the
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
Edit
stage with the most significant digit highlighted (associated
decimal point flashing) and the bottom line of the display
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
Current Transformer Primary Value ”
Up less significant digit.
Value (See section 3.2.2.)
position. At this stage the decimal point will flash.
“Potential Transformer Primary Value Confirmation” stage.
flashing at the “hundreds of volts” position.
3.2.2. Curren t Prima ry ValueTransformer
Secondary Value (See section 3.2.3)
will be restricted.
selected.
flashing).
nominal voltage, i.e, 250 MVA nominal system power.
“Current Transformer Primary Value Confirmation” stage.
.
will return to the“
will be blanked.
Transformer Primary Value
for 4W
x1000
AD
kVAD
x1000
MaxAD
Max kVAD
x10 00
Sys kVA
x1000
AD
kVAD
x1000
Ma x AD
Max kVAD
x1000
Sys kVA
x1000
AD
kVAD
x1000
MaxAD
Max kVAD
x1000
Sys kVA
x1000
AD
kVAD
x1000
Ma x AD
Max kVAD
the Current in Amps.
“ Up” key is pressed.
Note: 0.120 kV i.e. 120V L-N
120V fpr 3W
L-L
SysV
SysA
Hz
SysV
SysA
Hz
SysV
SysA
Hz
SysA
Hz
Sys kVA
SysV
x1000
the most significant digit from 0 through to9 unless
Pressing the “ Down” key will scroll the value of
Potential Transformer Digit Edit
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 Demand Integration time 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
Demand Integration Time edit menu (See section
3.2.4).
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.
3.2.4. Demand Integrati on Time
This screen is used to set the time taken for maximum demand readings. The value displayed
represents time in minutes. Integration periods of 8, 15, 20 or 30 minutes can be selected.
Pressing “ Up” key accepts the presents value
and advances to the “Demand Reset” menu. (See
section 3.2.5).
Pressing the “ Down” key will enter the “Demand
Integration Time Edit” mode and scroll the value
through the values available.
Pressing the “ Up” key advances to the “Demand
Integration Time Confirmation” menu.
As the unit advances to the Up screen the unit
demands are reset.
Demand Integration Time Confirmation.
This screen will only appear following an edit of the
Demand Integration Time.
If the time shown is not correct, pressing the“
Down” key will return to the “Demand Integration
Time Edit” stage by blanking the bottom line of the
display.
Pressing “ Up” key sets the displayed value and
will advance to the “Demand Reset” menu. (See
section 3.2.5)
SysV
SysA
Hz
SysV
SysA
Hz
SysV
SysA
Hz
SysV
SysA
Hz
x1000
Sys kVA
x1000
AD
kVAD
x1000
Ma x AD
Max kVAD
x1000
Sys kVA
x1000
AD
kVAD
x1000
Ma x AD
Max kVAD
x1000
Sys kVA
x1000
AD
kVAD
x1000
MaxAD
Max kVAD
x1000
Sys kVA
x1000
AD
kVAD
x1000
Ma x AD
Max kVAD
Seco nd ary Value3.2.3. Cur rent Transf ormer
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