MEWOI MEWOI1500D, Manual

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The Settings menu includes setting CT ratio, setting error, setting
time and setting backlight.
As shown in the right figure: Set the CT ratio to 300/5A; set the
error to 3%; set the automatic recording interval time to 15 minutes;
set the backlight to the enable state. Detailed operation is as
follows:
1. Set CT ratio
The preset CT ratio here refers to the standard transformation ratio
on the rating plate of pre-tested current transformer, it is easy to
compare with the measured ratio and calculate the error by the
above preset, its setting range is from 0000 to 9999 / 0.0 ~ 9.99A.
Press the Left or Right arrow key to move the cursor, press the Up
or Down arrow key continuously or interruptedly to change the
setting range, move the curs
or to the “OK” or “Cancel” position,
and press the MEM key to return the previous menu.
2. Set error
The pre-set error means the allowable error of the pre-tested
current transformer, if the error of measured values is more than
the preset error, the principal machine can sound the
“beep …
beep … beep” alarm, the available setting range is from 0.0% to
9.9%, Press the Left or Right arrow key to move the cursor, press
the Up or Down arrow key continuously or interruptedly to change