PQ Plus UMD 705, Руководство по эксплуатации

Страница: 13 / 15

13
Measured Quantities
– Power, Power Factor, Energy
Active / Reactive Power, Power Factor (PF), cos
φ (P
NOM
= U
NOM
x I
NOM
)
reference conditions
“A”: ambient
temperature (t
A
) U,
I
for active power, PF,
cos
φ for reactive
power
23 ± 2 ºC
U = 80 ÷ 120 % U
NOM
, I = 1 ÷ 120
% I
NOM
PF = 1.00
PF = 0.00
act. / react. power uncertainty ± 0.5 % of rdg ± 0.005 % P
NOM
PF & cos
φ uncertainty
± 0.005
reference conditions
”B”: ambient
temperature (t
A
) U,
I
for active power, PF,
cos
φ for reactive
power
23 ± 2 ºC
U = 80 ÷ 120 % U
NOM
, I = 2 ÷ 120
% I
NOM
PF >= 0.5
PF <= 0.87
act. / react. power uncertainty ± 1 % of rdg ± 0.01 % P
NOM
PF & cos
φ uncertainty
± 0.005
temperature drift of powers ± 0.05 % od rdg ± 0.02 % P
NOM
/ 10 ºC
Energy
measuring range
corresponds to U & I measuring ranges
4 quadrant energy counters for both
active and reactive energies
active energy uncertainty class 1 acc. to EN 62053
– 21
reactive energy uncertainty class 2 acc. to EN 62053
– 23