| Measurement lines |
1-phase/2-wire (1P2W), 1-phase/3-wire (1P3W),
3-phase/3-wire (3P3W2M, 3V3A, 3P3W3M), 3-phase/4-wire (3P4W) |
| |
CH1 |
CH2 |
CH3 |
CH4 |
CH5 |
CH6 |
| Pattern 1 |
1P2W |
1P2W |
1P2W |
1P2W |
1P2W |
1P2W |
| Pattern 2 |
1P3W / 3P3W2M |
1P2W |
1P2W |
1P2W |
1P2W |
1P2W |
| Pattern 3 |
1P3W / 3P3W2M |
1P2W |
1P3W / 3P3W2M |
1P2W |
| Pattern 4 |
1P3W / 3P3W2M |
1P3W / 3P3W2M |
1P3W / 3P3W2M |
| Pattern 5 |
3P3W3M / 3V3A / 3P4W |
1P2W |
1P2W |
1P2W |
| Pattern 6 |
3P3W3M / 3V3A / 3P4W |
1P3W / 3P3W2M |
1P2W |
| Pattern 7 |
3P3W3M / 3V3A / 3P4W |
3P3W3M / 3V3A / 3P4W |
| |
For 2-channel combinations, select 1P3W or 3P3W2M.
For 3-channel combinations, select 3P3W3M, 3V3A, or 3P4W. |
| Number of channels |
1 |
2 |
3 |
4 |
5 |
6 |
| Pattern 1 |
✓ |
✓ |
✓ |
✓ |
✓ |
✓ |
| Pattern 2 |
– |
✓ |
✓ |
✓ |
✓ |
✓ |
| Pattern 3 |
– |
– |
– |
– |
– |
✓ |
| Pattern 4 |
– |
– |
– |
✓ |
– |
✓ |
| Pattern 5 |
– |
– |
✓ |
✓ |
✓ |
✓ |
| Pattern 6 |
– |
– |
– |
– |
✓ |
✓ |
| Pattern 7 |
– |
– |
– |
– |
– |
✓ |
| |
Connection patterns that can be selected based on the number of channels:
[ ✓ ] Can be selected, [–] Cannot be selected |
| Number of input channels |
Max. 6 channels; each input unit provides 1 channel for simultaneous voltage and current input |
| Input terminal profile |
Voltage Plug-in terminals (safety terminals)
Probe 1 Dedicated connector (ME15W)
Probe 2 BNC (metal) + power supply terminal |
| Probe 2 power supply |
+12 V ±0.5 V, -12 V ±0.5 V, max. 600 mA, up to a max. of 700 mA for up to 3 channels |
| Input method |
Voltage measurement unit Photoisolated input, resistance voltage divider
Current measurement unit Isolated input from current sensor (voltage output) |
| Voltage range |
6 V / 15 V / 30 V / 60 V / 150 V / 300 V / 600 V / 1500 V |
| Current range (Probe 1) |
| 400 mA / 800 mA / 2 A / 4 A / 8 A / 20 A |
(with 20 A sensor) |
| 4 A / 8 A / 20 A / 40 A / 80 A / 200 A |
(with 200 A sensor) |
| 1 A / 2 A / 5 A / 10 A / 20 A / 50 A |
(with 50 A sensor) |
| 10 A / 20 A / 50 A / 100 A / 200 A / 500 A |
(with 500 A sensor) |
| 20 A / 40 A / 100 A / 200 A / 400 A / 1 kA |
(with CT6865) |
| (Probe 2) |
| 1 kA / 2 kA / 5 kA / 10 kA / 20 kA / 50 kA |
(with 0.1 mV/A sensor) |
| 100 A / 200 A / 500 A / 1 kA / 2 kA / 5 kA |
(with 1 mV/A sensor) |
| 10 A / 20 A / 50 A / 100 A / 200 A / 500 A |
(with 10 mV/A sensor; with 3274 or 3275) |
| 1 A / 2 A / 5 A / 10 A / 20 A / 50 A |
(with 100 mV/A sensor; with 3273 or 3276) |
100 mA / 200 mA / 500 mA / 1 A / 2 A / 5 A
(0.1 V / 0.2 V / 0.5 V / 1.0 V / 2.0 V / 5.0 V range) |
(with 1 V/A sensor; with CT6700 or CT6701) |
|
| Power range |
2.40000 W to 4.50000 MW (depending on voltage and current combinations) |
| Crest factor |
3 (relative to voltage/current range rating); however, 1.33 for 1500 V range, 1.5 for 5 V Probe 2 range 300 (relative to minimum valid voltage and current input); however, 133 for 1500 V range, 150 for 5 V Probe 2 range |
| Input resistance |
(50 Hz / 60 Hz) Voltage inputs 4 MΩ ±40 kΩ Probe 1 inputs 1 MΩ ±50 kΩ Probe 2 inputs 1 MΩ ±50 kΩ |
| Power range |
2.40000 W to 4.50000 MW (depending on voltage and current combinations) |
| Crest factor |
3 (relative to voltage/current range rating); however, 1.33 for 1500 V range, 1.5 for 5 V Probe 2 range 300 (relative to minimum valid voltage and current input); however, 133 for 1500 V range, 150 for 5 V Probe 2 range |
| Input resistance |
(50 Hz / 60 Hz) Voltage inputs 4 MΩ ±40 kΩ Probe 1 inputs 1 MΩ ±50 kΩ Probe 2 inputs 1 MΩ ±50 kΩ |
| Maximum input voltage |
Voltage inputs 1000 V, ±2000 Vpeak (10 ms or less)
Input voltage frequency of 250 kHz to 1 MHz, (1250 - f) V
Input voltage frequency of 1 MHz to 5 MHz, 50 V
Unit for f above: kHz
Probe 1 inputs 5 V, ±12 Vpeak (10 ms or less)
Probe 2 inputs 8 V, ±15 Vpeak (10 ms or less) |
| Maximum rated voltage to earth |
Voltage input terminal (50 Hz/60 Hz)
CATIII 600V; anticipated transient overvoltage: 6000V
CATII 1000V; anticipated transient overvoltage: 6000V |
| Measurement method |
Voltage/current simultaneous digital sampling with zero-cross synchronized calculation |
| Sampling |
5 MHz / 18 bits |
| Frequency band |
DC, 0.1 Hz to 2 MHz |
| Synchronization frequency range |
0.1 Hz to 2 MHz |
| Synchronization source |
U1 to U6, I1 to I6, DC (fixed at data update rate), Ext1 to Ext2
The zero-cross point of the waveform after passing through the zero-cross filter is used as the standard for U or I selection. |
| Data update rate |
10 ms / 50 ms / 200 ms
When using simple averaging, the data update rate varies based on the number of aver-aging iterations. |
| LPF |
500 Hz / 1 kHz / 5 kHz / 10 kHz / 50 kHz / 100 kHz / 500 kHz / OFF
Approx. 500 kHz analog LPF + digital IIR filter (Butterworth characteristics equivalent)
Except when off, add ±0.1% rdg. to the accuracy.
Defined for frequencies that are less than or equal to 1/10 of the set frequency. |
| Polarity detection voltage |
Current zero-cross timing comparison |
| Measurement parameters |
Voltage (U), current (I), active power (P), apparent power (S), reactive power (Q), power factor (λ), phase angle (Φ), frequency (f), efficiency (n), loss (Loss), voltage ripple factor (Urf), current ripple factor (Irf), current integration (Ih), power integration (WP), voltage peak (Upk), current peak (Ipk) |
| Effective measurement range |
Voltage, current, power: 1% to 110% of range |
| Zero-suppression range |
Select from OFF / 0.1% f.s. / 0.5% f.s.
When set to OFF, a value may be displayed even when receiving zero input. |
| Zero-adjustment |
Zero-adjustment of input offsets that are less than ±10% f.s. for voltage and ±10% f.s. ±4mV for current |
| Accuracy |
Sine wave input with a power factor of 1 or DC input, terminal-to-ground voltage of 0 V, after zero-adjustment
Within the effective measurement range |
| |
Voltage (U) |
Current (I) |
| DC |
±0.02% rdg. ±0.03% f.s. |
±0.02% rdg. ±0.03% f.s. |
| 0.1 Hz = f < 30 Hz |
±0.1% rdg. ±0.2% f.s. |
±0.1% rdg. ±0.2% f.s. |
| 30 Hz = f < 45 Hz |
±0.03% rdg. ±0.05% f.s. |
±0.03% rdg. ±0.05% f.s. |
| 45 Hz = f = 66 Hz |
±0.02% rdg. ±0.02% f.s. |
±0.02% rdg. ±0.02% f.s. |
| 66 Hz < f = 1 kHz |
±0.03% rdg. ±0.04% f.s. |
±0.03% rdg. ±0.04% f.s. |
| 1 kHz < f = 50 kHz |
±0.1% rdg. ±0.05% f.s |
. ±0.1% rdg. ±0.05% f.s. |
| 50 kHz < f = 100 kHz |
±0.01×f% rdg. ±0.2% f.s. |
±0.01×f% rdg. ±0.2% f.s. |
| 100 kHz < f = 500 kHz |
±0.008×f% rdg. ±0.5% f.s. |
±0.008×f% rdg. ±0.5% f.s. |
| 500 kHz < f = 1 MHz |
±(0.021×f-7)% rdg. ±1% f.s. |
±(0.021×f-7)% rdg. ±1% f.s. |
| Frequency band |
2 MHz (-3 dB, typical) |
2 MHz (-3 dB, typical) |
| |
Active power (P) |
Phase difference |
| DC |
±0.02% rdg. ±0.05% f.s. |
- |
| 0.1 Hz = f < 30 Hz |
±0.1% rdg. ±0.2% f.s. |
±0.1° |
| 30 Hz = f < 45 Hz |
±0.03% rdg. ±0.05% f.s. |
±0.05° |
| 45 Hz = f = 66 Hz |
±0.02% rdg. ±0.03% f.s. |
±0.05° |
| 66 Hz < f = 1 kHz |
±0.04% rdg. ±0.05% f.s. |
±0.05° |
| 1 kHz < f = 10 kHz |
±0.15% rdg. ±0.1% f.s. |
±0.4° |
| 10 kHz < f = 50 kHz |
±0.15% rdg. ±0.1% f.s. |
±(0.040×f)° |
| 50 kHz < f = 100 kHz |
±0.012×f% rdg. ±0.2% f.s. |
±(0.050×f)° |
| 100 kHz < f = 500 kHz |
±0.009×f% rdg. ±0.5% f.s. |
±(0.055×f)° |
| 500 kHz < f = 1 MHz |
±(0.047×f-19)% rdg. ±2% f.s. |
±(0.055×f)° |
|
| |
- Unit for f above: kHz
- Voltage and current DC values are defined for Udc and Idc, while frequencies other than DC are defined for Urms and Irms.
- When U or I is selected as the synchronization source, accuracy is defined for source input of at least 5% f.s.
- The phase difference is defined for a power factor of zero during f.s. input.
- Add the current sensor accuracy to the above accuracy figures for current, active power, and phase difference.
- For the 6 V range, add ±0.05% f.s. for voltage and active power.
- Add ±20 µV to the DC accuracy for current and active power when using Probe 1 (however, 2 V f.s.).
- Add ±0.05% rdg. ±0.2% f.s. for current and active power when using Probe 2, and add ±0.2° to the phase at or above 10 kHz.
- The accuracy figures for voltage, current, active power, and phase difference for 0.1 Hz to 10 Hz are reference values.
- The accuracy figures for voltage, active power, and phase difference in excess of 220 V from 10 Hz to 16 Hz are reference values.
- The accuracy figures for voltage, active power, and phase difference in excess of 750 V for values of f such that 30 kHz < f = 100 kHz are reference values.
- The accuracy figures for voltage, active power, and phase difference in excess of (22000/f [kHz]) V for values of f such that 100 kHz < f = 1 MHz are reference values.
- Add ±0.02% rdg. for voltage and active power at or above 1000 V (however, figures are reference values). Even for input voltages that are less than 1000 V, the effect will persist until the input resistance temperature falls.
- For voltages in excess of 600 V, add the following to the phase difference accuracy:
- 500 Hz < f = 5 kHz: ±0.3°
- 5 kHz < f = 20 kHz: ±0.5°
- 20 Hz < f = 200 kHz: ±1°
| Measurement parameters |
Accuracy |
| Apparent power |
Voltage accuracy + current accuracy ±10 dgt. |
| Reactive power |
Apparent power accuracy +
![reactive-power]() |
| Power factor |
φ of ±90°:
![power-factor]()
±cos (φ + phase difference accuracy) × 100% f.s. ±50 dgt. |
| Waveform peak |
Voltage/current RMS accuracy ±1% f.s.
(f.s.: apply 300% of range) |
f: kHz; φ: Display value for voltage/current phase difference; λ: Display value for power factor |
| Effects of temperature and humidity |
Add the following to the voltage, current, and active power accuracy within the range of 0°C to 20°C or 26°C to 40°C:
±0.01% rdg./°C (add 0.01% f.s./°C for DC measured values)
For current and active power when using Probe 2, ±0.02% rdg./°C (add 0.05% f.s./°C for DC measured values)
Under conditions of 60% RH or greater:
Add ±0.0006 × humidity [%RH] × f [kHz]% rdg. to the voltage and active power accuracy.
Add ±0.0006 × humidity [%RH] × f [kHz]° for the phase difference. |
| Effects of common-mode voltage |
50 Hz/60 Hz 100 dB or greater (when applied between the voltage input terminals and the enclosure)
100 kHz 80 dB or greater (reference value)
Defined for CMRR when the maximum input voltage is applied for all measurement ranges. |
| Effects of external magnetic fields |
±1% f.s. or less (in a magnetic field of 400 A/m, DC or 50 Hz/60 Hz) |
| Effects of power factor |
f of other than ±90°:
![power-factor]()
±cos (φ + phase difference accuracy) × 100% f.s. |
| Frequency measurement |
| Number of measurement channels |
Max. 6 channels (f1 to f6), based on the number of input channels |
| Measurement source |
Select from U/I for each connection. |
| Measurement method |
Reciprocal method + zero-cross sampling value correction
Calculated from the zero-cross point of waveforms after application of the zero-cross filter. |
| Measurement range |
0.1 Hz to 2 MHz (Display shows 0.00000 Hz or ----- Hz if measurement is not possible.) |
| Accuracy |
±0.05% rdg. ±1 dgt. (with a sine wave that is at least 30% of the measurement source’s measurement range) |
| Display format |
0.10000 Hz to 9.99999 Hz, 9.9000 Hz to 99.9999 Hz,
99.000 Hz to 999.999 Hz, 0.99000 kHz to 9.99999 kHz,
9.9000 kHz to 99.9999 kHz, 99.000 kHz to 999.999 kHz,
0.99000 MHz to 2.00000 MHz |
| Integration measurement |
| Measurement modes |
Select RMS or DC for each connection (DC mode can only be selected when using an AC/DC sensor with a 1P2W connection). |
| Measurement parameters |
Current integration (Ih+, Ih-, Ih), active power integration (WP+, WP-, WP) Ih+ and Ih- are measured only in DC mode. Only Ih is measured in RMS mode. |
| Measurement method |
Digital calculation based on current and active power values
DC mode Every sampling interval, current values and instantaneous power values are integrated separately for each polarity. : : RMS mode The current RMS value and active power value are integrated for each measurement interval. Only active power is integrated separately for each polarity. |
| Display resolution |
999999 (6 digits + decimal point), starting from the resolution at which 1% of each range is f.s. |
| Measurement range |
0 to ±9999.99 TAh/TWh |
| Integration time |
10 sec. to 9999 hr. 59 min. 59 sec. |
| Integration time accuracy |
±0.02% rdg. (0° to 40°) |
| Integration accuracy |
±(current or active power accuracy) ±integration time accuracy |
| Backup function |
None |
| Harmonics measurement |
| Number of measurement channels |
Max. 6 channels, based on the number of built-in channels |
| Synchronization source |
Based on the synchronization source setting for each connection. |
| Measurement modes |
Select from IEC standard mode or wideband mode (setting applies to all channels). |
| Measurement parameters |
Harmonic voltage RMS value, harmonic voltage content percentage, harmonic voltage phase angle, harmonic current RMS value, harmonic current content percentage, harmonic current phase angle, harmonic active power, harmonic power content percentage, harmonic voltage/current phase difference, total harmonic voltage distortion, total harmonic current distortion, voltage unbalance rate, current unbalance rate (no intermediate harmonic parameters in IEC standard mode) |
| FFT processing word length |
32 bits |
| Antialiasing |
Digital filter (automatically configured based on synchronization frequency) |
| Window function |
Rectangular |
| Grouping |
OFF / Type 1 (harmonic sub-group) / Type 2 (harmonic group) |
| THD calculation method |
THD_F / THD_R (Setting applies to all connections.) Select calculation order from 2nd order to 100th order
(however, limited to the maximum analysis order for each mode). |