User Manual

6.4.2 Instantaneous value measurement -Over-range / Bar indication KEW6310
6.21 KEW6310
6.4.2 Over-range / Bar indication
Check the followings.
WARNING
● When the over-range indication appears on the maximum chosen range, this means that the input exceeds
the maximum allowable input for the instrument. Never apply such an in pu t to the instrumen t.
● When a measured value exceeds the maximum allowable input, the use of VT/CT’s is recommended.
Refer to “5-3 VT/ CT“ in this manual and fol low the instruction
CAUTION
● When over-range indication appears on the screen, calculations are still performed. However their accuracy
may not be gua ran teed .
Over-range indication
A message “OL” is displayed when measured items exceed following conditions.
Volt age : Volt age Ra nge x VT ra tio x 120% e.g. Voltage Ra nge : 300V, VT ratio : 1 => 360 .0V
Current : Current Range x CT ratio x 120% e.g. Current Range : 200A, CT ratio : 2 => 480.0A
Power : Power x VT ratio x CT ratio x 120% e.g. Power : 60kW, VT ratio : 1, CT ratio : 2 => 144.0kW
OL mark is displayed.