5. CHANGING SETTINGS
IM 2493WVP-1
9
Changing the Potential Transformer (pt) ratio setting
When you reach the PT setting, the primary value will be displayed in the middle
row and the secondary value will be displayed in the bottom row. Press Set and
the first digit of the primary value will begin blinking. You can increment the
value of this digit by pressing Inc. Once a digit has reached 9 (nine) it will then
go to 0 (zero). To move to the next digit press Next. You can return to the first
digit by pressing Next while the last digit is blinking.
When you have the digits as you want them, press Set. The decimal point will
now be blinking. You can then move the decimal point to the right by pressing
Inc. Once it has reached the last position it will jump to the first position on the
next Inc.
Pressing Set again will bring you to the Multiplier (Kilo) setting. In the leftmost
digit you will see a blinking ‘ |- ‘ and if the multiplier light is on it will also blink.
You can change the setting by pressing Inc.
The next time you press Set the value of the secondary will blink. To change the
value, press Inc. There are only two choices: 1 or 120. (1 or 240 if the input
range is 0-240V).
Pressing Set will now move you to the Confirm mode. All values will blink. If the
values are correct press Set one last time to save them and move on to the
Current Transformer settings. Pressing Mode at this time or at any other step in
the process will restore the old PT settings.
The PT primary value can be set to any value between 1.000 and 300000 (240
Volts X 1250 ratio). If it is not in this range you get the error “ErrH” (Too High) or
“ErrL” (Too Low) when you try to advance to the secondary. The ratio of the
Primary and Secondary must be between 1.000 and 1250. If the CT is also set,
