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DC, 0.1 Hz to 2 MHz, 3-phase 4-wire, High Precision Power Analyzer for Motor and Inverter Efficiency Analysis



Hioki benchtop power meters and power analyzers are best in class power measuring instruments for measuring single to three-phase lines with a high degree of precision and accuracy. The PW6001 is Hioki’s flagship power analyzer, featuring high accuracy, wide band, and high stability for measuring electrical power from DC to inverter frequencies, providing maximum of 12 channels* to support single- and three-phase inverter motor system measurements and next generation devices such as silicon-carbide (SiC) inverters.  Ideal for high current power measurement as well as SCI inverter power measurement.
*When synchronizing two 6-channel models connected via optical link

Key Features

• Basic accuracy of ±0.02%*1 for power measurement (*1 PW6001 accuracy only. Instrument delivers accuracy of ±0.07% even after the current sensor accuracy has been added.)
• High noise resistance and stability (80 dB/100 kHz CMRR, ±0.01%/°C temperature characteristics)
• Accurate measurement even when the load is characterized by large fluctuations; TrueHD 18-bit resolution
• 10 ms data refresh while maintaining maximum accuracy (using a specially designed IC to make all measurements independently while performing simultaneous calculations.)
• DC accuracy of ±0.07%, which is key for stable, accurate efficiency measurement
• Wide frequency bandwidth of DC, or 0.1 Hz to 2 MHz
• Achieve true frequency analysis with high-speed 5MS/s sampling (18 bit)
• Broad frequency band and sampling that are 10 times better than those of legacy models
• Synchronize 2 units for up to 12 channels*2 in real time
*2 Two 6-channel models can be connected with an optical connection cable (over a max. length of 500 m) to enable numerical and waveform synchronization.
• Special triggers to enable waveform analysis and motor analysis without the need for an oscilloscope
• Wideband harmonic analysis up to the 100th order with a 1.5 MHz band



Product Video


0.1 Hz to 2 MHz frequency bandwidth

Power measurements across wide bandwidths are required for supporting high-speed switching devices such as SiC. Compared even to the Hioki 3390 Power Analyzer, the PW6001 is engineered with 10x the frequency band and sampling performance.
High accuracy, wideband, and high stability. The Hioki PW6001 combines the 3 important elements of power measurement and basic performance backed by advanced technology to achieve unsurpassed power analysis.



High-speed sampling of 5 MS/s for true frequency analysis

Measurements based on sampling theorem are required to perform an accurate power analysis of PWM waveforms. The Hioki PW6001 features direct sampling of input signals at 5 MS/s, resulting in a measurement band of 2 MHz. This enables analysis without aliasing error



Fast, simultaneous calculation functions achieved with Power Analysis Engine II

All measurements, including period detection, wideband power analysis, harmonic analysis, and waveform analysis, are digitally processed independently and with no effect on each other. Fast calculation processing is used to achieve a data update speed of 10 ms while maintaining maximum



Strengthened resistance to noise and temperature fluctuations in the absolute pursuit of measurement stability

The custom-shaped solid shield made completely of finely finished metal and optical isolation devices used to maintain sufficient creepage distance from the input terminals dramatically improve noise resistance, provide optimal stability, and achieve a CMRR performance of 80 dB/100 kHz. Add the superior temperature characteristics of ±0.01%/°C and you now have access to a power analyzer that delivers top-of-the-line measurement stability.



Analyze waveforms without an oscilloscope

In addition to voltage and current waveforms, torque sensor and encoder signals can also be displayed simultaneously. The PW6001 is also built in with triggers, pre-triggers, other triggers convenient for motor analysis such as for PWM waveforms, as well as encoder pulse triggers.



Harmonic analysis up to 1.5 MHz

Wideband harmonic analysis is provided as a standard feature to a max. 100th order for fundamental frequencies 0.1 Hz to 300 kHz and an analysis band of 1.5 MHz. Analysis of fundamental waves in motors and measurement of distortion rate in the transmission waveforms for wireless power supplies
are now possible.



FFT analysis of target waveforms

Frequency analysis up to 2 MHz. Specify any waveform analysis range you like and see the 10 highest peak values and frequencies displayed.



Digital LPF for displaying the waveform you want to view

Select a cutoff frequency for the measurement target. Digital LPF greatly reduces noise to let you display the waveform you want to view.



Seamless operability

Time spent on operations is reduced, to allow focused concentration on analysis.
-9-inch touch screen with soft keypad
-Dual knobs for vertical/horizontal manipulation of waveforms
-Wiring confirmation function, to avoid wiring mistakes
-Enter handwritten memos on the screen, or use the onscreen keypad



One-touch settings take you to measurement immediately

The built-in easy setup function allows you to simply select the type of measurement line and immediately start measurement using the automated optimum settings.



DC accuracy is indispensable for achieving correct efficiency measurements

For example, when measuring the efficiency of a DC/AC converter, not only AC accuracy but also DC accuracy are equally important. With the PW6001, a DC measurement accuracy of ±0.02% rdg. ±0.05% f.s.* delivers correct and stable efficiency measurements.

*Unit accuracy only



Specially designed for current sensors to achieve highly precise measurement

This reduces the effects of wiring and meter loss, allowing measurements with wiring conditions that are close to the actual operating environment for a highly efficient system.
- Short wiring
- Little effect from routing
- Small insertion loss



High-accuracy clamp current sensor

The CT684x series feature broad temperature characteristics and an operating temperature range of -40°C to 85°C, allowing them to be used in operational evaluations of devices and inside equipment that are subject to extreme temperature changes. The current sensors’ tough performance helps ensure you can make the measurements you need.



Get a combined accuracy of ±0.07% rdg. even with current sensor

Add ±0.05% rdg. accuracy of the current sensor to the PW6001’s basic accuracy of ±0.02% rdg. to achieve top-of-the-line accuracy of ±0.07%. Choose from a diverse array of sensors to cover very small currents from 10mA up to large 1000A* loads.

*Effective measurement range.



Wideband current probes supported

When combined with the HIOKI CT6700, it is also possible to measure minute currents of 1 mA. This is perfect for observing leakage current waveforms in inverters.



PW9100, The optimal device for testing inverters

The newly developed DCCT method provides world-leading measurement bands and accuracy at a 50 A rating. Delivering a direct-coupled type current testing tool that brings out the PW6001 POWER ANALYZER's maximum potential.
-Rating : 50Arms (±50A DC)
-Measurement frequency band : DC to 3.5 MHz
-Power accuracy in combination with PW6001 : ±0.04 %*
-CMRR(100kHz) : 120dB

* For complete details, please refer to the specifications



PC Communication Software – PW Communicator

PW Communicator is an dedicated application software for communicating between a PW6001 power meter and a PC. Free download is available from the Hioki website. The application contains convenient functions for setting the PW6001, monitoring the measurement values, acquiring data via communication, computing efficiency, and much more.



Remote control via LAN

Control the PW6001 remotely from a tablet, smartphone, or any device offering a standard web browser.



Diverse motor analysis functions

Enter signals from torque meters and speed meters to measure motor power. In addition to motor parameters such as motor power and electrical angle, output signals from insolation meters and wind speed meters can also be measured.



SiC measurement achieved with high resolution

High resolution is required for the high precision measurement of PWM waveforms for SiC semiconductors with low ON resistance. TrueHD 18-bit is achieved at a level of precision that has never been seen before.



Advanced electrical angle measurement function

The PW6001 features a built-in electric angle measurement function required for the measurement of motor parameters in high-efficiency synchronized motors and the analysis of vector control via dq coordinate systems. Make real-time measurements of phases for voltage and current fundamental wave components based on encoder pulses. Further, zero-adjustment of the phase angle when induced voltage occurs allows phase measurement at the induction voltage standard. Finally, the PW6001 can detect the forward/reverse from A phase and B phase pulses to enable 4-quadrant analysis of torque and RPM.



Display any calculation result in real-time

Set equations to have PW6001 compute measurement values in the way you want. You can enter up to 16 calculation formulas, and functions like sin and log are supported. Calculation results can be used as parameters for other calculation formulas, enabling complex analysis.
-Calculate Ld and Lq in motor vector control
-Measure ferrite core loss
-Add up RMS and power
-Calculate multisystem efficiency and loss with solar power modules and similar equipment



Power conditioner testing

Parameters required for power conditioners, such as fundamental wave reactive power Qf nd, DC ripple rate, and 3-phase unbalanced rate, can be measured and displayed simultaneously. The required measurement data can be viewed at a glance, improving test efficiency.



Build a 12-channel power meter using “numerical synchronization”

For multi-point measurements, use the numerical synchronization function to transfer power parameters from the slave device to aggregate at the master in real-time, essentially enabling you to build a 12-channel power analysis system



Simply transfer waveforms with “waveform synchronization”

Achieve real-time* transfer of 5 MS/s 18-bit sampling data. Measurement waveforms on the slave instrument are displayed without modification on the master unit, paving the way for new applications for power analyzers, such as measurement of the voltage phase difference between two separate devices.

* For both master instruments and slave instrument, waveform synchronization operates only when there are 3 or more channels. Max. ±5 sampling error



Basic specifications(Accuracy guaranteed for 6 months, Post-adjustment accuracy guaranteed for 6 months)

Measurement line type Single-phase 2-wire, single-phase 3-wire, three-phase 3-wire, three-phase 4-wire
Number of input channels Max. 6 channels; each input unit provides 1 channel for simultaneous voltage and current input
(Voltage measurement unit: Photoisolated input, resistance voltage divider, Current measurement unit: Isolated input from current sensor)
Measurement items Voltage (U), current (I), active power (P), apparent power (S), reactive power (Q), power factor (λ), phase angle (φ), frequency (f), efficiency (η), loss (Loss), voltage ripple factor (Urf), current ripple factor (Irf), current integration (Ih), power integration (WP), voltage peak (Upk), current peak (Ipk)
  Harmonic measurement: Harmonic active power, select calculation order
from 2nd order to 100th order
  Waveform recording: Voltage and current waveforms/ Motor pulse: Always 5 MS/s
Motor waveforms: Always 50 kS/s, 16 bits
Recording capacity: 1 Mword × ((voltage + current) × number of channels + motor
  Motor analysis (PW6001-11 to -16 only): Voltage, Torque, Rotation, Frequency, Slip, or Motor output
Measurement range Voltage range: 6 to 1500 V, 8 ranges
Current range (Probe 1) : 400 mA to 1 kA (depends on current sensor)
Current range (Probe 2) : 100 mA to 50 kA (depends on current sensor)
Power range: 2.40000W to 4.50000MW (depends on combination of voltage and current range)
Frequency range: 0.1 Hz to 2 MHz
Basic accuracy Voltage: ±0.02 % rdg. ±0.02 % f.s.
Current: ±0.02 % rdg. ±0.02 % f.s. + current sensor accuracy
Active power: ±0.02 % rdg. ±0.03 % f.s. + current sensor accuracy
Synchronization frequency range Power measurement: 0.1 Hz to 2 MHz
Harmonic measurement: 45 Hz to 66 Hz (IEC standard mode), 0.1 Hz to 300 kHz (Wideband mode)
Frequency band DC, 0.1 Hz to 2 MHz
Data update rate Power measurement: 10 ms/ 50 ms/ 200 ms
Harmonic measurement: 200 ms (IEC standard mode), 50 ms (Wideband mode
Data save interval OFF, 10 msec to 500 msec, 1 sec to 30 sec, 1 minute to 60 minutes
User-selected from all measured values, including harmonic measured values,
Specified measured values can be saved in internal memory or USB flash drive
External interfaces USB (memory), LAN, GP-IB, RS-232C, External control ,Synchronization control
Power supply 100 to 240 V AC, 50/60 Hz, 200 VA max
Dimensions and mass 430 mm (16.93 in)W × 177 mm (6.97 in)H × 450 mm (17.72 in)D, 14 kg (49.4 oz) (PW6001-16)
Accessories Instruction Manual ×1, Power cord ×1, D-sub connector × 1 (PW6001-1x only)




Technical Notes

Power Analyzer PW6001

High-precision, Wideband, High Stable Current Sensing Technology

Identification of PMSM Parameters with the Power Analyzer PW6001 (Theory and Instrument Configuration)

Current Measurement Methods that Deliver High Precision Power Analysis in the Field of Power Electronics

High-precision Power Measurement of SiC Inverters

Identification of PMSM Motor Parameters with a Power Analyzer (Measurement Examples)

Measurement of Loss in High-Frequency Reactors

Declaration of Conformity

POWER ANALYZER PW6001-01,PW6001-02,PW6001-03,PW6001-04,PW6001-05,PW6001-06,PW6001-11,PW6001-12,PW6001-13,PW6001-14,PW6001-15,PW6001-16 [101KB]


10 mA class to 500 A (High speed)



• DC to 2MHz (-3dB) • 500Arms maximum input • 0.01V/A output • φ 20 mm (0.79 in) core dia.


• DC to 50MHz (-3dB) • 30Arms maximum input • 0.1V/A output • φ 5 mm (0.20 in) core dia.


• DC to 100MHz (-3dB) • 30Arms maximum input • 0.1V/A output • φ 5 mm (0.20 in) core dia.


• DC to 10MHz (-3dB) • 150Arms maximum input • 0.01V/A output • φ 20 mm (0.79 in) core dia.

Connection Options

* L9217: for motor analysis input



50/125 μm wavelength multimode fiber, 10 m (32.81 ft) length

Direct Current Input

* To connect to the HIOKI ME15W (12 pin) terminal



• Wide-band DC to 3.5MHz, 50A AC/DC rated input, 0.04V/A output • PW9100-03 : 3 channels • PW9100-04 : 4 channels

Input cable (B)

*Voltage is limited to the specifications of the input modules in use.



Attaches to the tip of the banana plug cable, Red/ Black: 1 each, 196 mm (7.72 in) length, CAT III 1000 V

Other options for Input



Cord has insulated BNC connectors at both ends, 1.6 m (5.25 ft) length

PC communication



2 m (6.56 ft) length

RS-232C CABLE 9637

For the PC, 9 pin - 9 pin, cross, 1.8 m (5.91 ft) length

PC Software



Straight Ethernet cable, supplied with straight to cross conversion adapter, 5 m (16.41 ft) length

PL23 (10-pin) - ME15W (12-pin) conversion



Convert PL23 (10-pin) terminal to ME15W (12-pin) terminal

POWER SUPPLY for Current Sensors

*A separate power supply (CT955x) is required in order to use a high-precision current sensor.



• Power supply for current sensors when used alone • 4ch, with Waveform/Total Waveform/Total RMS output

Printer options

*PRINTER UNIT is a built-in option that must be specified upon order.



9 pin - 9 pin straight, 1.5 m (4.92 ft) length

Up to 1000 A (High precision)

*A separate power supply (CT955x) is required in order to use a high-precision current sensor. *Only sensors with ME15W (12-pin) terminals (-05 type) can be connected to the CT955x. *The separately available CONVERSION CABLE CT9900 is required in order to use a sensor with a PL23 (10-pin) terminal.



• DC to 20kHz • Phase: DC to 1kHz • Rated 1000A • 2V/1000A output • φ 36 mm (1.42 in) core dia.


• DC to 100kHz • Phase: DC to 100kHz • Rated 500A • 2V/500A output • φ 36 mm (1.42 in) core dia.


• DC to 100 kHz • 500 A AC/DC rated • 4 mV/A output • φ 50 mm (1.79 in) core dia.


• DC to 200 kHz • 500 A AC/DC rated • 4 mV/A output • φ 20 mm (0.79 in) core dia.


• DC to 20 kHz • 1000 A AC/DC rated • 2 mV/A output • φ 50 mm (1.79 in) core dia.

Up to 200 A (High precision)

*A separate power supply (CT955x) is required in order to use a high-precision current sensor. *Only sensors with ME15W (12-pin) terminals (-05 type) can be connected to the CT955x. *The separately available CONVERSION CABLE CT9900 is required in order to use a sensor with a PL23 (10-pin) terminal.



• DC to 1MHz, Phase: DC to 300kHz • Rated 50A • 2V/50 A output • φ 24 mm (0.94 in) core dia.


• DC to 500 kHz, Phase: DC to 300kHz • Rated 200A • 2V/200A output • φ 24 mm (0.94 in) core dia.


• Frequency characteristics DC to 1 MHz, 20A AC/DC rated, 0.1 V/A output • φ 20 mm (0.79 in) core dia.


• Frequency characteristics DC to 500 kHz, 200A AC/DC rated, 0.01 V/A output • φ 20 mm (0.79 in) core dia.

Up to 4000 A (High precision)

Aggregate and measure large currents in multi-cable circuits



ME15W (12 pin) terminal to ME15W (12 pin) terminal, 1 m (3.28 ft) length (for connecting CT9557 total output to PW6001 or PW3390 only)

Up to 5 A (High speed)

* To connect Probe 2



• DC to 50 MHz (-3dB) • 5 Arms maximum • 1 V/A output • φ 5 mm (0.20 in) core dia.


• DC to 120 MHz (-3dB) • 5 Arms maximum • 1 V/A output • φ 5 mm (0.20 in) core dia.

Voltage Input



1000 V specifications, Black/ Red, 3 m (9.84 ft) length, Alligator clip ×2


1000 V specifications, Red/ Yellow/ Blue/ Gray each 1, Black 4, Alligator clip ×8, 3m (9.84ft) length

Impedance Measurement of Reactors While in Operation

Loss Analysis of Reactors While in Operation

Drivers, Firmware, Software

Ver. 1.00
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