R7CWTU
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
EM-7814 Rev.3 P. 10 / 18
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DEMAND SETTING
RGTR.
PARAMETER
UNIT
5857
Average (demand) current update interval
0 : External trigger signal
1 to 60 : Minutes
Factory setting : 30
Minutes
5858
Average (demand) power update interval
0 : External trigger signal
1 to 60 : Minutes
Factory setting : 30
Minutes
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STYLE SETTING
RGTR.
PARAMETER
5987
Power factor (PF1 through PF3, PF) sign
0 : Standard (IEC), Identical to the active energy (*)
1 : Special type 1 (IEEE), Positive in LAG, Negative in LEAD
5988
Reactive power (Q1 through Q3, Q) sign
0 : Standard (IEC), Positive from PF = 1.0 to 180° in LAG direction; Negative for the other direction (*)
1 : Special type 1, Positive in LAG, Negative in LEAD
5989
Reactive power (Q1 through Q3) calculation (Q = Q1 + Q2 + Q3)
0 : Standard (*)
Qn = √Sn
2
– Pn
2
1 : Reactive power meter method Qn =
1
Nsmp
Nsmp
(Uni – Nui) I
i + (Nsmp / 4)
∑
i = 1
5990
Apparent power (S) calculation
0 : Standard (*)
S = √P
2
+ Q
2
1 : Sum
S = S1 + S2 + S3
(*) Factory setting
Note: ‘1,’ ‘2,’ ‘3’ in expressions like Q1, Q2, Q3 indicate ‘R,’ ‘S,’ ‘T’ respectively.
