YOKOGAWA WT310EH - Page 9

1-2
IM WT310E-01EN
Power
Measurement
Function
(Symbol)
Panel Indicator
Light
Description Measured for
Each Input
Element
Measured for
Wiring Units
(WT332E/
WT333E only)
P W Active power Yes Yes
S VA Apparent power Yes Yes
Q var Reactivepower Yes Yes
λ PF Power factor Yes Yes
Φ ° Phase difference Yes Yes
P+pk Wpk Maximum power Yes No
P-pk Wpk Minimum power Yes No
Frequency
Measurement
Function
(Symbol)
Panel Indicator
Light
Description Measured for
Each Input
Element
Measured for
Wiring Units
(WT332E/
WT333E only)
fU VHz Voltagefrequency Yes No
fI AHz Current frequency Yes No
fPLL (PLL U) VHz Frequency of PLL voltage
*
Yes No
fPLL (PLL I) AHz Frequency of PLL current
*
Yes No
* Only on models with the harmonic measurement option
Integrated Power (Watt hour)
Measurement
Function
(Symbol)
Panel Indicator
Light
Description Measured for
Each Input
Element
Measured for
Wiring Units
(WT332E/
WT333E only)
Time Time Integration time Yes No
WP Wh Sum of positive and negative watt
hours
Yes Yes
WP± Wh± Positive or negative watt hours Yes Yes
q Ah Sum of positive and negative
ampere hours
Yes Yes
q± Ah± Positive or negative ampere hour Yes Yes
AVP
*
MATH Average active power during
integration
Yes Yes
* This measurement function is set using the MATH feature of this instrument.
Efficiency (WT332E/WT333E only)
*
Measurement
Function
(Symbol)
Panel Indicator
Light
Description
EFFi MATH Efficiency
* This measurement function is set using the MATH feature of the WT332E/WT333E.
Basic Arithmetic
*
Measurement
Function
(Symbol)
Panel Indicator
Light
Description
A+B MATH A+B
A-B MATH A-B
A×B MATH A×B
A÷B MATH A÷B
A÷B^2 MATH A÷B
2
A^2÷B MATH A
2
÷B
* This measurement function is set using the MATH feature of this instrument.
1.1 Items That This Instrument Can Measure