Power Meter
5335B
5
www.bkprecision.com
1
Input signal frequency in kHz
2
Input waveform: Sine wave crest factor: 3, common-mode voltage: 0 V, power factor: 1
Frequency filter: Turn on when measuring
≤
200 Hz
3
When power factor (PF)=0 (apparent power (S)):
±0.2% of S when 45 Hz
≤
f
≤
66 Hz
±{(0.2+0.2×f)% of S} when 0.066
≤
f
≤
100 kHz
When 0<PF<1(phase angle (
Ф
)):
(power reading ) × [(power reading error %) + (power range %) × (power range/indicated apparent power value) + {tan
Ф
× (influence when PF=o)%}]
When the line filter is turned ON:
45 to 66 Hz: Add 0.3% of reading
<45 Hz: Add 1% of reading
4
Accuracy when the crest factor is set to 6, the accuracy is obtained by doubling specified accuracies
Frequency Measurement Accuracy
Frequency
measurement
range
Data update interval
0.1 s
0.25 s
0.5 s
1 s
2 s
5 s
Measurement range
25 Hz
≤
f
≤
100 kHz
10 Hz
≤
f
≤
100 kHz
5 Hz
≤
f
≤
100 kHz
2.5 Hz
≤
f
≤
100 kHz
1.5 Hz
≤
f
≤
50 kHz
0.5 Hz
≤
f
≤
20 kHz
Accuracy
±0.06%
(CF 3 and signal <30% F.S.) or,
(CF 6 and signal <60% F.S.), and
≤
200 Hz with frequency filter on
Frequency filter
500 Hz low-pass
Current Measurement Accuracy and Ranges
Direct input range
CF= 3:5 mA, 10 mA, 20 mA, 50 mA, 100 mA, 200 mA, 0.5 A, 1 A, 2 A, 5 A, 10 A, 20 A
CF= 6:2.5 mA, 5 mA, 10 mA, 25 mA, 50 mA, 100 mA, 250 mA, 0.5 A, 1 A, 2.5 A, 5 A, 10 A
Sensor input range
External 1
CF = 3: 2.5 V, 5 V, 10 V
CF = 6: 1.25 V, 2.5 V, 5 V
External 2
CF= 3: 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2 V
CF= 6: 25 mV, 50 mV, 100 mV, 250 mV, 500 mV, 1 V
Accuracy
2
(line, frequency, &
digital filter set to off)
DC to 1 kHz
±(0.1% + 0.2% F.S.)
1 kHz < f
≤
10 kHz
±{(0.07 f
1
)% + 0.3% F.S.}
10 kHz < f
≤
100 kHz
±(0.5% + 0.5% F.S.) ± [{0.04×(f
1
-10)}%]
Temperature
coefficient
2.5 to 200 mA
5 μA/ °C (after zero-level compensation, or range change)
500 mA to 20 A
500 μA/ °C (after zero-level compensation, or range change)
Influence of internal
sensor self-heating
+ 0.00013 × I
2
% of reading to the AC current accu 0.00013 × I
2
% of r 0.004 × I
2
mA (0.5 to 20 A) or
0.00013 × I
2
% of r 0.00004 × I
2
mA (2.5 to 200 mA), add to the DC current accuracy specifications
Specifications (cont.)
Power Measurement Accuracy
Real power accuracy
2 , 3
(CF= 3)
4
DC
±(0.1% + 0.2% F.S.)
0.5 Hz
≤
f < 45 Hz
±(0.3% + 0.2% F.S.)
45 Hz
≤
f
≤
66 Hz
±(0.1% + 0.1% F.S.)
66 Hz < f
≤
1 kHz
±(0.2% + 0.2% F.S.)
1 kHz < f
≤
10 kHz
±(0.1% + 0.3% F.S.) ± [{0.067×(f-1)}%]
10 kHz < f
≤
100 kHz
±(0.5% + 0.5% F.S.) ± [{0.09×(f-10)}%]
Apparent power (S)
Voltage ac current accuracy
Reactive power (Q)
Apparent power ac ( 1.0004-PF
2
) - ( 1-PF
2
) × 100%
Power factor (
PF
)
±[(PF–PF/1.0002) + abs(cosØ - cos{Ø+sin
-1
(influence from the power factor when PF=0%/100)})] ± 1 digit
when voltage and current are at the measurement range rated input
Phase angle (
Ф
)
±[abs(Ø - cos
-1
(PF/1.0002)) + sin
-1
{(influence from the power factor when PF=0%)/100}] deg ± 1 digit
when voltage and current are at the measurement range rated input
Temperature coefficient
Same as the temperature coefficient for voltage and current
