SMY133-SMY134-SMP133 Operating Manual
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 °C
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 powe
23 ± 2 °C
U = 80 ÷ 120 % U
NOM
, I = 1 ÷ 120 % I
NOM
PF <= 0.87
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 rgd +/- 0.02 % P
NOM
/ 10 °C
Energy
measuring range
corresponds to U & I measuring ranges
4 quadrant energy counters for both active and reactive energies
active energy uncertainty
class 0.5S acc. to EN 62053 – 22
reactive energy uncertainty
class 1S acc. to EN 62053 – 24
Note *) : The quantities and their measurement uncertainties are valid for f
NOM
= 50/60 Hz. For f
NOM
=
DC ÷ 500 Hz ("The Fixscan" mode), see separate table below.
„FIXSCAN“ Mode - Measuring Uncertainties
f
NOM
set to „DC-500“
Frequency Range : 350 ÷ 450 Hz
Frequency
measuring uncertainty
± 0.1 Hz
Voltage
measuring uncertainty
+/- 0.2 % of rdg +/- 0.1 % of rng
Current
measuring uncertainty
+/- 0.2 % of rdg +/- 0.1 % of rng
Active / Reactive Power, Power Factor (PF), cos φ ( P
NOM
= U
NOM
x I
NOM
)
reference conditions “A” :
U, I
for active power, PF, cos φ
for reactive power
U = 80 ÷ 120 % U
NOM
, I = 1 ÷ 120 % I
NOM
PF = 1.00
PF = 0.00
act. / react. power uncertainty
±
0.5 % of rdg ± 0.01 % P
NOM
PF & cos φ uncertainty
± 0.01
reference conditions “B” :
U, I
for active power, PF, cos φ
for reactive power
U = 80 ÷ 120 % U
NOM
, I = 1 ÷ 120 % I
NOM
PF >= 0.5
PF <= 0.87
act. / react. power uncertainty
± 2 % of rdg ± 0.1 % P
NOM
PF & cos φ uncertainty
± 0.02
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