KYORITSU 6305-03, Instruction Manual

Page: 121 / 128

13.3
KEW6305
(4) Frequency f [Hz]
Accuracy ±3dgt
Displayed digit
3 digits
Allowable input 10 - 110% of V range (sine wave, 45 - 65Hz)
Display range 40.0 - 70.0Hz
Input source V1
(5) Calculation items
Apparent power S [VA]
Displayed digit Same as active power.
Equation 1P2W ×1
A V S
× =
×2
) 2 , 1 ( 1 _
= × =
i Ai V i S
，
2 1 S S S
+ =
×3
) 3 , 2 , 1 ( 1
= × =
i Ai V i S
，
3 2 1 S S S S
+ + =
1P3W
) 2 , 1 (
= × =
i Ai Vi Si
，
2 1 S S S
+ =
3P3W
) 2 , 1 (
= × =
i Ai Vi Si
，
( )
2 1
2
3
S S S
+ =
3P3W3A
) 3 , 2 , 1 (
= × =
i Ai Vi Si
，
3 2 1 S S S S
+ + =
3P4W
) 3 , 2 , 1 (
= × =
i Ai Vi Si
，
3 2 1 S S S S
+ + =
Reactive power Q [Var]
Displayed digit Same as active power.
Polarity indication - (minus) : leading phase
+ (no sign) : lagging phase
Equation 1P2W ×1
2 2
P S Q
− =
×2
( )
2 , 1 _ _ _
2 2 = − =
i i P i S i Q
，
2 1 Q Q Q
+ =
×3
( )
3 , 2 , 1 _ _ _
2 2 = − =
i i P i S i Q
，
3 _ 2 _ 1 _ Q Q Q Q
+ + =
1P3W
( )
2 , 1
2 2
= − =
i Pi Si Qi
，
2 1 Q Q Q
+ =
3P3W
( )
2 , 1
2 2
= − =
i Pi Si Qi
，
2 1 Q Q Q
+ =
3P3W3A
( )
3 , 2 , 1
2 2
= − =
i Pi Si Qi
，
3 2 1 Q Q Q Q
+ + =
3P4W
( )
3 , 2 , 1
2 2
= − =
i Pi Si Qi
，
3 2 1 Q Q Q Q
+ + =
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