Specifications
Input
Parameter
Input type
Rated value
(range-value)
Instrument loss
(input resistance)
Instantaneous maximum allowed
input (1 cycle, for 20 ms)
Continuous maximum allowed
input
Continuous maximum in-phase
voltage (50/60 Hz)
Common mode rejection ratio
(600 Vrms)
Input terminal type
A/D converter
Switching range-value
Auto-range function
Measurement Functions
Method
Crest factor
Temperature: 23 ± 3˚C
Humidity: 30 to 75%RH
Input waveform: Sinewave
In-phase voltage: 0 V
Line filter: OFF
Power factor: cosø = 1
Specified following zero
level correction or rangevalue change after
warmup period ends. 3month accuracy Unit for
f in accuracy
calculation equation:kHz
Effective input range
One-year accuracy
Line filter function
Line filter on accuracy
Temperature coefficient
Conditions for detecting
lead and lag
Measurement lower limit
frequency
Current and power DC accuracy (5 A input element) -----Add 20 µA to current and 20 µA × (voltage reading) to power
Current and power DC accuracy (50 A input element) -----Add 1 mA to current and 1 mA × (voltage reading) to power
External input -----Add (0.05/scaling value) A to current and (0.05/scaling value) A × (voltage reading) to power
Zero level correction or as a zero level correction in current and power DC accuracy relating to temperature changes following range-value changes, add 10 µA /°C to current and add (10 µA × voltage reading) /°C to
power for the 5 A input element. For the 50 A input element, add 1 mA /°C to current and add (1 mA × voltage reading) /°C to power. For external input, add (0.05/scaling value) A/°C to current and add {(0.05/scaling
value) A × (voltage reading)} /°C to power.
Voltage rms, mean, AC ----- Add 5 mV.
Current rms, mean, AC-----Accuracy figures are specified with line filter turned ON for 2 mA or less on a 5 A input element, for 200 mA or less on a 50 A input element, for 10/(scaling value ) A or less on a external input.
Add (0.006 × I2)% at 5 A input element.
Add (0.00006 × I
Add 0.1% of range if the display updating period is 50 msec.
All accuracy of 0.5 Hz to 10 Hz: Reference values
Voltage ----- Reference values in cases where f(Hz) × voltage(V) > 2.2 × 10
Current ----- Reference values for 20 AAC or higher (except for range of 50 Hz to 400 Hz) or higher
For currents less than 5 mA with frequencies above 1 kHz, the current accuracy and the power accuracy figures are the reference values.
Add 20% of rng to the accuracy above for the accuracy of the waveform display data, voltage peak (Upk), and current peak (Ipk) in the range up to 1 MHz. (Reference Value)
2
)% at 50 A input element.
Voltage
Floating input
Resistive potential division method
1.5/3/6/10/15/30/60/100/150/300/600/1000V
Approximately 2MΩ
Peak voltage of 4 kV or rms of 1.5 kV
(whichever is lower)
Peak voltage of 1.5 kV or rms of 1 kV
(whichever is lower)
600 Vrms CATII
(with voltage input terminals shorted and current input terminals open) 50/60 Hz: ±0.01% of rng or less (±(0.01 × 15/(rated value of rng))% of rng or less for 10-V rng or less).
Up to 100 kHz: Reference value ±(0.1 × f% of rng) or less, (±(0.1 × f × 15/(rated value of rng))% of rng or less for 10-V rng or less), but no less than 0.01% ; frequency unit: kHz
Plug-in terminal (safety terminal)
Voltage/current input simultaneous conversion, 16-bit resolution, conversion speed of approximately 5 µsec
Range-value can be set independently for each element, through manual setting, automatic setting, or online setting
Increasing range-value: Range-value is increased when rms exceeds 110% of rated value or peak value exceeds approximately 330% of rated
value.Decreasing range-value: Range-value is decreased when peak is 300% or less of lower range-value while rms is 30% or less of rated value.
Current (5A input element)
Shunt input method
Direct input:
10m/20m/50m/100m/200m/500m/1/2/5A
External input: 50m/100m/250m/500m/1/2.5/5/10V
Direct input: Approximately 100mΩ +
Approximately 0.07µH
External input: Approximately 100kΩ
Peak current of 30 A or rms of 15 A (whichever is lower)
External input: Peak not to exceed 10 times
range-value
Peak current of 10 A or rms of 7 A (whichever is lower)
External input: Peak not to exceed 5 times
range-value
Direct input: Large binding post (frequency band of assured accuracy: up to 1 MHz for the 5 A
Current sensor input: BNC connector (frequency band of assured accuracy: up to 500 kHz).
terminal, up to 100 kHz for the 50 A terminal).
Current (50A input element)
Direct input: 1/2/5/10/20/50A
External input:
50m/100m/250m/500m/1/2.5/5/10V
Direct input: Approximately 2mΩ +
Approximately 0.07µH
External input: Approximately 100kΩ
Peak current of 450 A or rms of 300 A (whichever is lower)
External input: Peak not to exceed 10 times
range-value
Peak current of 150 A or rms of 50 A (whichever is lower)
External input: Peak not to exceed 5 times
range-value
Digital multiplication method
3 (when rated value of the measurement range is input) However, it is 2 for the 1000 V range.
Frequency
DC
0.5 Hz ≤ f < 10 Hz
10 Hz ≤ f < 45 Hz
45 Hz ≤ f ≤ 66 Hz
66 Hz < f ≤ 1 kHz
1 kHz < f ≤ 50 kHz
50 kHz < f ≤ 100 kHz
100 kHz< f ≤ 500 kHz
500 kHz< f ≤ 1 MHz
Power factor effect ø:
Voltage and current
phase angle
Voltage, current: Rms and AC: 1% to 110% of rated range-value, DC: 0% to ±110% of rated range-value, Mean: 10% to 110% of rated range-value Power:
DC measurement: 0% to ±110% of rated range-value, AC measurement: Up to ±110% of power range-value, with voltage and current within 1% to 110%
of rated range-value (Sync source signal level must be at least 10% of rated range-value)
Effective input is in the range up to 1000V at Voltage , 5A at 5A input element, 50A at 50A input element and 10V at External input.
1.5 times tolerance for 3-month accuracy reading
Measurement can be made with a line filter inserted in the input circuit. Cutoff frequency (fc): 500 Hz or 5.5 kHz
Cut-off frequency of 500 Hz: Voltage, current: Add 0.2% of rdg in range of 45 to 66 Hz. Under 45 Hz, add 0.5% of rdg.
Power: Add 0.3% of rdg in range of 45 to 66 Hz. Under 45 Hz, add 1% of rdg.
Cutoff frequency of 5.5 kHz: Voltage, current: Add 0.2% of rdg under 66 Hz. At 66 Hz to 500 Hz, add 0.5% of rdg.
Power: Add 0.3% of rdg under 66 Hz. At 66 Hz to 500 Hz, add 1% of rdg.
±0.03% of rdg/˚C at 5 to 20˚C and 26 to 40˚C
Lead and lag are detected correctly when the voltage and current signals are both sine waves, the amplitude is greater than or equal to 50% of the
measurement range, the frequency is between 20 Hz to 10 kHz, and the phase difference is greater than or equal to
Data update rate
Measurement lower limit frequency
Voltage/Current
0.1% of rdg + 0.2% of rng
0.1% of rdg + 0.2% of rng
0.1% of rdg + 0.1% of rng
0.1% of rdg + 0.05% of rng
0.1% of rdg + 0.1% of rng (Voltage, 5A input element current
direct input and external input)
0.2% of rdg + 0.1% of rng (50A input element current direct input)
0.3% of rdg + 0.1% of rng (Voltage, 5A input element current
direct input)
(0.015 × f + 0.3)% of rdg + 0.1% of rng (External input)
(0.1 × f + 0.2)% of rdg + 0.1% of rng (50A input element current direct input)
0.6% of rdg + 0.2% of rng (Voltage, 5A input element current
direct input)
(0.009 × f + 0.6)% of rdg + 0.2% of rng (External input)
(0.1 × f +0.2)% of rdg + 0.2% of rng (50A input element current direct input)
0.006*f% of rdg + 0.5% of rng (Voltage, 5A input element current
direct input)
(0.03 × f-1.5)% of rdg + 0.5% of rng (External input)
(0.022 × f-8) of rng + 1% of rng (Voltage, 5A input element
current direct input)
When cos ø = 0, 45 Hz to 66 Hz: 0.15% of apparent power reading is added to the above power accuracy. For other frequencies: Reference value
For 5 A input element current direct input, add (0.15 + 0.05 × f)% of apparent power reading to the above accuracy.
For 50 A input element current direct input, add (0.15 + 0.3 × f)% of apparent power reading to the above accuracy.
For external input, add (0.15 + 0.1 × f)% of apparent power reading to the above accuracy.
When 0 < cos ø < 1, add (tan ø × (influence of power factor = 0)) of power reading.
50 msec
45 Hz
7
at 100 kHz or higher.
100 msec
25 Hz
200 msec
15 Hz
Powe r
0.1% of rdg + 0.2% of rng
0.2% of rdg + 0.3% of rng
0.1% of rdg + 0.2% of rng
0.1% of rdg + 0.05% of rng
0.2% of rdg + 0.1% of rng
0.3% of rdg + 0.2% of rng (Voltage, 5A input element current
direct input)
(0.02 × f + 0.3)% of rdg + 0.2% of rng (External input)
(0.1×f+0.2)% of rdg + 0.2% of rng (50A input element current direct input)
0.7% of rdg + 0.3% of rng (5A input element current direct
input)
(0.009 × f + 0.9)% of rdg + 0.3% of rng (External input)
(0.3×f-9.5)% of rdg + 0.3% of rng (50A input element current direct input)
0.008*f% of rdg + 1% of rng (5A input element current direct
input)
(0.06 × f - 4)% of rdg + 1% of rng (External input)
(0.048 × f - 20) of rdg + 2% of rng
(5A input element current direct input)
±5°
500 msec
5 Hz
1 sec
2.5 Hz
.
2 sec
1.5 Hz
5 sec
0.5 Hz
rdg: reading, rng: range
1
Specifications
Calculation Functions
Single-phase,
Voltage ΣU (U1+U2)/2 (U1+U2+U3)/3
Current ΣI
Active power ΣP
Reactive
power Q, ΣQ
Apparent
power S, ΣS
Power factor
λ, Σλ
Phase angle
φ, Σφ
Calculation precision
(of calculated values relative
to measured values)
Note 1: Apparent power (S), reactive power (Q), power factor (λ), and phase angle (φ) for this equipment are
calculated from active power. (However, reactive power during harmonic measurement is the sum of every
order.) Therefore, in the case of distorted-wave input, these values may be different from those of other instruments based on different measurement principles.
Note 2: If the phase angle display is 0 to 360, there is no accuracy specification for 0 and 180 ± 5 degrees.
Other parameters (during normal measurement)
Upk, Ipk (peak value), CF (crest factor), FF (form factor), |Z| (impedance), Rs and Rp (resistance), Xs and Xp
(reactance), η and 1/η (efficiency), Pc (Corrected Power), F1 to F4 (user-defined functions), delta calculations
(three-phase three-wire_3V3A conversion, Y-∆ conversion, ∆-Y conversion)
Wiring settings: Settings can be divided into three groups (ΣA, ΣB, and ΣC).
Each group is selected from the following: 1P2W (single-phase two-wire, one element used), 1P3W (single-
phase three-wire, two elements used), 3P3W (three-phase three-wire, two elements used), 3V3A (threephase three-wire, three elements used), 3P4W (three-phase four-wire, three elements used).
Normal measurement
Harmonic measurement
Normal measurement
Harmonic measurement
Power factor
λ, Σλ
Phase angle
φ, Σφ
(S2-P2)
Qi=
Qi
Si=Ui × Ii
Si=
(Pi2+Qi2) (ΣP2+ΣQ2)
λi=Pi/Si
φi=cos-1(Pi/Si) φi=cos-1(Σ
Apparent power (S) and reactive power (Q): ±0.001% of power range-value
Power factor (λ): ±0.0001
Phase angle (φ):
Three-phase,
three-wire
(I1+I2)/2
S1+S2 (S1+S2)
ΣP/Σ
S
P/ΣS
±
0.005° relative to calculation from power factor
Three-phase,
three-wire
(2 voltage, 2 current)
(3 voltage, 3 current)
P1+P2
Q1+Q2 Q1+Q2+Q3
3
3
2
3
)
three-wire
(I1+I2+I3)/3
(S1+S2+S3)
Three-phase,
four-wire
P1+P2+P3
(S1+S2+S3)
Display Functions
Display 6.4-inch color TFT LCD
Pixels in full screen: 640 × 480 (The LCD unit may contain defects of
Display type
Numerical values: Normal measurement: 4/8/16/42/78/ALL
Harmonic measurement: 4/8/16/Single List/Dual List
Waveforms: Single/Dual/Triad/Quad
Vector: Phase diagram for first-order components in har-
Bar: Bar graph up to upper limit of analyzed orders in
Trend display: Trend display of measured/calculated values
Data updating rate: Selected from 50msec/100msec/200msec/
Internal memory Approximatery 11MB
Response type: Up to data updating rate × 2 (with waveform acqui-
Display scaling function: PT ratio, CT ratio, and power scaling factor can be
Averaging functions Normal measurement
Methods: Exponential average or simple moving average
Exponential average: Attenuation constant of 2, 4, 8, 16, 32, or 64
Moving average: Number of averages (N) set to 8, 16, 32, 64, 128,
Display resolution U,I,P: During rated range-value input, the decimal
approximately 0.02% in the pixels of the full screen)
monic measurement
harmonic measurement
500msec/1sec/2sec/5sec. (waveform OFF)
(Add approximately 500msec when the waveform
data acquisition is ON.) The display update cycle
is maximum 100msec when the waveform data acquisition is OFF and only in the Numeric display(16
or less value). It is 200msec or more at the other
data update rates.
sition off)
scaled.
or 256
Harmonic measurement
When using an exponential average, the attenuation constant is 5.625 if the frequency of the PLL
synchronization source is 55 Hz or greater but less
than 75 Hz; otherwise, the attenuation constant is
4.6875. (When data length = 8192)
place and the counting unit are set so that the display does not exceed a count value of 60,000. ΣU,
Σ
I, ΣP: The decimal place and the counting unit are
the same as for the maximum range-value of the calculated element.
Frequency Measurement Functions
Measurement input Select three of the following: U1,I1, U2,I2, U3,I3,
Measurement method: Reciprocal method
Frequency range Data updating rate Frequency range
U4,I4, U5,I5, U6,I6
50 msec 45 Hz ≤ f ≤ 1 MHz
100 msec 25 Hz ≤ f ≤ 1 MHz
200 msec 15 Hz ≤ f ≤ 500 kHz
500 msec 5 Hz ≤ f ≤ 200 kHz
1 sec 2.5 Hz ≤ f ≤ 100 kHz
2 sec 1.5 Hz ≤ f ≤ 50 kHz
5 sec 0.5 Hz ≤ f ≤ 20 kHz
Accuracy ±(0.05% of reading + 1 digit)
Note: Within accuracy-assured range ±(0.05% of rdg
+ 1 digit) for the measurement function parameters.
Input signal level is greater than or equal to 0.6 V
(voltage input), 25 mV (external input), 5 mA (5-A
input element), or 150 mA (50-A input element) and
the signal is greater than or equal to 30%
Hz to less than 440 Hz, with zero crossing filter ON)
10% (from 440 Hz to 500 kHz), or 30% (from more
than 500 kHz to 1 MHz) of the measurement range.
(from 0.5
Integration Functions
The integrating functions do not work during waveform acquisition or in harmonic analysis mode ON.
Measured parameters: Power (Wp), positive-only power (+Wp), negative-
Mode Standard integration mode (timer mode)
Individual element integration
Timer Integration can be stopped automatically accord-
Count overflow If the integration value exceeds ±999999
Accuracy ±(unit accuracy + 0.05% of rdg)
Timer accuracy ±0.02%
only power (-Wp), current (q), positive-only current
(+q), negative-only current (-q) (For current integration, select only one of the following for each
element: rms, mean, DC, AC.), time (Time)
Continuous integration mode (repeat mode)
Manual integration mode
Integration can be started/stopped element by element using GP-IB or serial (RS-232) communications.
ing to a timer setting.
Setting range: 0000h00min00sec to
10000h00min00sec
MWh(MAh), the elapsed time is saved and the operation is stopped.
Harmonic Measurement Functions
Measurements Select one of the following: ΣA, ΣB, ΣC
Method PLL synchronization or external sampling clock
Measurement frequency range
Analyzed parameters For each order: U, I, P, S, Q, λ, φ(U-I), φU, φI (phase
FFT data length 8192, 4096, or 2048
FFT processed word length
Window function Rectangular
Anti-aliasing filter Set by line filter (fc = 5.5 kHz)
PLL synchronization
Fundamental Sampling
frequency (Hz) frequency
10 ≤ f< 20 f × 2048 4 2 1 100
20 ≤ f< 40 f × 1024 8 4 2 100
40 ≤ f< 75 f × 512 16 8 4 100
75 ≤ f< 150 f × 256 32 16 8 100
150 ≤ f< 440 f × 128 64 32 16 50
440 ≤ f ≤1000 f × 64 128 64 32 25
External sampling clock
Fundamental Sampling
frequency (Hz) frequency
0.5 ≤ f≤ 100 f × 2048 4 2 1 100
However, it is 1 ≤ f ≤ 100 when the FFT data length is 8192
Accuracy (Line filter 5.5 kHz ON)
0.5 Hz ≤ f < 10 Hz 0.4% of rdg + 0.2% of rng 0.7% of rdg + 0.3% of rng
10 Hz ≤ f < 45 Hz 0.4% of rdg + 0.1% of rng 0.6% of rdg + 0.2% of rng
45 Hz ≤ f ≤ 66 Hz 0.3% of rdg + 0.05% of rng 0.4% of rdg + 0.05% of rng
66 Hz < f ≤ 1 kHz 1% of rdg + 0.1% of rng 1.5% of rdg + 0.1% of rng
1 kHz < f ≤ 2.5 kHz 2% of rdg + 0.1% of rng ---------
PLL synchronization: Synchronization source fundamental frequency of 10 Hz to 1 kHz
External sampling clock: Fundamental wave of 0.5
Hz to 100 Hz (Input 2048 times the fundamental
frequency. The waveform is a square wave with a
duty cycle of 50% at the TTL level.)
difference of harmonic component relative to fundamental wave), |Z|, Rs, Rp, Xs, Xp
Total: U, I, P, S, Q, λ, φ
Σ calculation of fundamental wave and total: U, I, P,
S, Q, and λ
For each order: Harmonic content of U, I, and P
THD of U, I, and P
UTHF (voltage telephone harmonic factor), ITHF
(current telephone harmonic factor), UTIF (voltage
telephone influence factor), ITIF (current telephone
influence factor), HVF (harmonic voltage factor),
HIF (harmonic current factor)
32 bits
Window width relative to FFT data length
(number of fundamental wave cycles) analyzed orders
8192 4096 2048
Window width relative to FFT data length
(number of fundamental wave cycles) analyzed orders
8192 4096 2048
Maximum
Maximum
Voltage/Current Power
,
2
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