Delta MS 300M - Display Solar Power Calculator Specifications Page 12
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DC
0.1Hzf30Hz
30Hzf45Hz
45Hzf66Hz
66Hzf1kHz
1kHzf10kHz
10kHzf50kHz
50kHzf100kHz
100kHzf500kHz
500kHzf1MHz
Current
0.05% of reading+0.05% of range (sensor)
0.05% of reading+0.05% of range+2uA (direct)
0.1% of reading+0.2% of range
0.03% of reading+0.05% of range
0.03% of reading+0.05% of range
0.03% of reading+0.05% of range
0.1% of reading+0.05% of range
0.3% of reading+0.1% of range
0.012f% of reading+0.2% of range
0.009f% of reading+0.5% of range
(0.022f–7)% of reading+1% of range
Power
0.05% of reading+0.1% of range (sensor)
0.05% of reading+0.1% of range+2uAV reading (direct)
0.2% of reading+0.3% of range
0.05% of reading+0.05% of range
0.05% of reading+0.05% of range
0.05% of reading+0.05% of range
0.15% of reading+0.1% of range
0.3% of reading+0.2% of range
0.014f% of reading+0.3% of range
0.012f% of reading+1% of range
(0.048f–19)% of reading+2% of range
2A input element (5mA, 10mA, 20mA, 50mA, 100mA, 200mA range)
U: Voltage, sensor: external sensor input, direct: direct current input
DC
0.1Hzf30Hz
30Hzf45Hz
45Hzf66Hz
66Hzf1kHz
1kHzf10kHz
10kHzf50kHz
50kHzf100kHz
100kHzf500kHz
500kHzf1MHz
Voltage/current
0.05% of reading+0.05% of range (U, 30A, Sensor)
0.05% of reading+0.05% of range+2uA (2A)
0.1% of reading+0.2% of range
0.03% of reading+0.05% of range
0.01% of reading+0.03% of range
0.03% of reading+0.05% of range
0.1% of reading+0.05% of range
0.3% of reading+0.1% of range
0.012f% of reading+0.2% of range
0.009f% of reading+0.5% of range
(0.022f–7)% of reading+1% of range
Power
0.05% of reading+0.1% of range
0.05% of reading+0.1% of range+2µAU reading (2A)
0.2% of reading+0.3% of range
0.05% of reading+0.05% of range
0.02% of reading+0.04% of range
0.05% of reading+0.05% of range
0.15% of reading+0.1% of range
0.3% of reading+0.2% of range
0.014f% of reading+0.3% of range
0.012f% of reading+1% of range
(0.048f–19)% of reading+2% of range
30A input element, 2A input element (500mA, 1A, 2A range), Voltage input
U: Voltage, sensor: external sensor input, 2A: 500mA, 1A, 2A range of 2A direct current input, 30A: 30A direct current input
—
Lead/Lag Detection (d
(LEAD)/G (LAG) of the
phase angle and
symbols for the reactive
power Q∑ calculation)
* The s symbol shows
the lead/lag of each
element, and "-"
indicates leading.
Temperature coefficient
Effective input range
Max. display 140% of the voltage and current range rating
Min. display
Accuracy of apparent
power S
Accuracy of
reactive power Q
Accuracy of power factor
λ
Accuracy of phase
difference Ø
When cutoff frequency is 500 Hz
"45 to 66Hz: Add 0.2% of reading
Under 45 Hz: Add 0.5% of reading"
When cutoff frequency is 5.5 kHz
"66Hz or less: Add 0.2% of reading
66 to 500Hz: Add 0.5% of reading"
When cutoff frequency is 50 kHz
"500Hz or less: Add 0.2% of reading
500 to 5kHz: Add 0.5% of reading"
Voltage/current
When λ=0 (500mA to 30A range)
Apparent power reading×0.03% in the 45
to 66 Hz range
All other frequencies are as follows
(however, these are only reference
values):
Apparent power reading×
(0.03+0.05×f(kHz))%
When λ=0 (5mA to 200mA range)
Apparent power reading×0.1% in the 45
to 66 Hz range
All other frequencies are as follows
(however, these are only reference
values):
Apparent power reading×
(0.1+0.05×f(kHz))%
0 < λ < 1 (45 Hz to 66 Hz)
(Power reading) × [(power reading error
%) + (power range error %) × (power
range /apparent power indication value) +
[tanϕ × (influence when λ = 0) %}. ϕ is the
phase angle between the voltage and
current.
The phase lead and lag are detected correctly when the voltage and current signals
are both sine waves, the lead/lag is 50% of the range rating (or 100% for crest factor
6), the frequency is between 20 Hz and 10 kHz, and the phase angle is ± (5˚ to 175˚)
or more.
Accuracy of apparent power
+( (1.0004–λ
2
) – (1–λ
2
) ) ×100% of range
When cutoff frequency is 500 Hz
"45 to 66Hz: Add 0.3% of reading
Under 45 Hz: Add 1% of reading"
When cutoff frequency is 5.5 kHz
"66Hz or less: Add 0.3% of reading
66 to 500Hz: Add 1% of reading"
When cutoff frequency is 50 kHz
"500Hz or less: Add 0.3% of reading
500 to 5kHz: Add 1% of reading"
Influence of line filter
Udc and Idc are 0 to ±130% of the measurement range
Urms and Irms are 1 to 130%* of the measurement range (or 2%–130% for crest
factor 6)
Umn and Imn are 10 to ±130% of the measurement range
Urmn and Irmn are 10 to ±130%* of the measurement range
Power is 0 to ±130%* for DC measurement, 1 to 130%* of the voltage and current
range for AC measurement, and up to ±130%* of the power range.
However, when the data update rate is 50 ms, 100 ms, 5 sec, 10 sec, or 20 sec, the
synchronization source level falls below the input signal of frequency measurement.
* 110% for maximum range of direct voltage and current inputs. The accuracy at 110
to 130% of the measurement range is the reading error ×1.5.
Urms and Irms are up to 0.3% relative to the measurement range (or up to 0.6% for a
crest factor of 6).
Umn, Urmn, Imn, and Irmn are up to 2% (or 4% for a crest factor of 6).
Below that, zero suppress. Current integration value q also depends on the current
value.
± [(λ–λ/1.0002)+ |cosØ–cos{Ø+sin
-1
(influence of power factor of power when
λ=0%/100)}|] ±1digit when voltage and current is at rated input of the measurement
range. Ø is the phase difference of voltage and current.
± [|Ø–cos
-1
(λ/1.0002)| + sin
–1
{(influence of power factor of power when λ=0%)/100}]
deg ±1digit when voltage and current is at rated input of the measurement range
Power
±0.02% of reading/˚C at 5–18˚ or 28–40 ˚C.
Voltage accuracy + current accuracy
One-year accuracy Add the accuracy of reading error (Six-month) × 0.5 to the accuracy
six-month
Measurement lower
limit frequency
Data update rate 50ms
45Hz
100ms
25Hz
250ms
20Hz
500ms
10Hz
1s
5Hz
2s
2Hz
5s
0.5Hz
10s
0.2Hz
20s
0.1Hz
Measurement lower
limit frequency
Total power error with
respect to the range for
an arbitrary power
factor λ (exclude λ = 1)
Accuracy
[Conditions] *These conditions are all accuracy condition in this section.
Temperature: 23±5°C, Humidity: 30 to 75%RH, Input waveform: Sine wave, Common mode
voltage:0 V, Crest factor: 3, Line filter: OFF, λ (power factor): 1, After warm-up.
After zero level, compensation or range value change while wired. f is frequency (kHz), 6-
month
* The units of f in the reading error equation are kHz.
30A input element/2A input element
• For temperature changes after zero level compensation or range change, add 0.2mA/°C to the
DC accuracy of the 30A input element.
• For temperature changes after zero level compensation or range change, add 2uA/°C to the DC
accuracy of the 2A input element.
• For temperature changes after zero-level compensation or range change on the external
current sensor input, add 0.02 mV/°C to the DC accuracy of the external current sensor input.
• Accuracy of waveform display data, Upk and Ipk
Add 3% of range to the accuracy above. However, add 3% of range +5mV for external
input(reference value). Effective input range is within ±300% (within ±600% for crest factor 6)
• Influenced by changes in temperature after zero level correction or range value changes.
Add 50ppm of range/°C to the voltage DC accuracy, 0.2 mA/°C to the 30A input current DC
accuracy, 3µA/°C to the 2A current accuracy, 0.02 mV/°C to the external current DC accuracy,
and influence of voltage times influence of current to the power DC accuracy.
30A input element
For self-generated heat caused by current input on an DC input signal, add 0.00002 I
2
% of
reading + 3 I
2
uA to the current accuracy. I is the current reading (A). The influence from self-
generated heat continues until the temperature of the shunt resistor inside the WT3000 lowers
even if the current input changes to a small value.
2A input element
For self-generated heat caused by current input on an DC input signal, add 0.004 I
2
% of
reading + 6 I
2
uA to the current accuracy. I is the current reading (A). The influence from self-
generated heat continues until the temperature of the shunt resistor inside the WT3000 lowers
even if the current input changes to a small value.
• Additions to accuracy according to the data update rate
Add 0.05% of reading when it is 100 ms, and 0.1% of reading when 50ms.
•Range of guaranteed accuracy by frequency, voltage, and current
All accuracies between 0.1 Hz and 10 Hz are reference values.
If the voltage exceeds 750 V at 30 kHz–100 kHz, or exceeds {2.2 x 10
4
/ f(kHz)}V at 100 kHz–1
MHz, the voltage and power values are reference values.
If the current exceeds 20 A at DC, 10 Hz–45Hz, or 400 Hz–200 kHz; or if it exceeds 10 A at 200
kHz–500 kHz; or exceeds 5 A at 500 kHz–1 MHz, the current and power accuracies are
reference values.
• Accuracy for crest factor 6: Range accuracy of crest factor 3 for two times range.
- Precision Power Analyzer 1
- Accuracy: 2
- FUNCTIONS 3
- Measurement data display 4
- APPLICATIONS 5
- Flourescent 6
- SOFTWARE 7
- REAR PANEL 8
- CHARACTERISTICS 8
- Adapters and Cables 9
- Connecting Diagram 9
- SUPPORTS Crest Factor 6 10
- WT3000 SPEC 11
- Accuracy 12
- • IEC Harmonic Measurement 15
- • FFT Function Specifications 16
- Instrument Carts 18
- Exterior 19
- Model and Suffix Codes 19
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