YOKOGAWA WT310EH - Page 42

2-15
IM WT310E-01EN
Measurement Conditions
1
2
3
4
5
6
7
8
App
Index
Types of Coefficients and the Order in Which They Are Set
You can set coefficients in the following order. You can set a coefficient to a value between 0.001 and
9999. The default setting is 1.000.
• V:TheVTratioisshownondisplayB.
• C:TheCTratioisshownondisplayC.
• F:ThepowercoefficientisshownondisplayD.
OntheWT310EandWT310EH,coefficientsaresetinthefollowingorder:V,C,F.Whenyouhave
finished setting the coefficients, press SET.
On the WT332E/WT333E, select End in the input element selection menu after you have finished
setting the coefficients.
Turning Scaling On and Off
After you have set the coefficients, select whether to set scaling to on or oFF. The default setting is
oFF.
• on:Scalingstarts,andtheSCALINGindicatorilluminates.
• oFF:Scalingisstopped.TheSCALINGindicatorturnsoff.
Note
• Whentheproductofthecoefficientandthemeasurementrangeexceeds9999M(10
6
) , the computation
overflow indication (--oF--) appears.
• Whenyouuseanexternalcurrentsensorformeasurementandscalingisenabled,theexternalcurrent
sensor’sscalingconstantisfurthermultipliedbytheVTorCTratio.Thescalingconstantisdifferentfrom
the scaling feature that is explained in this section. For details, see section 2.4.
2.5 Setting the Scaling Feature When Using a VT or CT