Accurately measure devices up to 1,000 V/65 A AC/DC with direct input
The PW3336 series (2-channel) and PW3337 series (3-channel) are easy-to-use, high-accuracy power meters that deliver current measurement of up to 65 A with direct input as well as built-in harmonic analysis functionality, all with accuracy that exceeds that of previous HIOKI power meters.

The new PW3336 and PW3337 three-phase power meters offer the fine precision, direct input functionality and large current sensing capabilities required to increase efficiency and minimize power consumption, especially in areas of motor, inverter and power conditioner evaluations.

These Hioki digital power measuring devices, when used with an optional clamp sensor, can also measure up to 5000A AC. In addition to built-in harmonic analysis functionality, the PW3336 and PW3337 Power Meters provide GP-IB, LAN, D/A output and other interfaces to better accommodate a variety of testing situations.

Measure up to 65 A with direct input

A 3-channel power meter
Enabling you to select the optimal range for each connection The advanced engineering of the PW3336 and PW3337 enables you to measure an inverter’s primary-side DC power supply and its secondary-side 3-phase output at the same time. The power meters make a tremendous contribution in applications that need to measure the input/output efficiency of inverters, uninterruptible power supplies, and other power supply equipment.

Best-in-class accuracy of ±0.15% rdg.
HIOKI has drawn on its accumulated base of technology and experience to deliver best-in-class accuracy for the PW3336/ PW3337. This rock-solid accuracy serves to support customers throughout the full range of measurement situations.

Simultaneously  measure  power  consumption  and  all  harmonic parameters, from 1-phase/2-wire to 3-phase/4- wire measurement lines Simultaneously  measure  power  consumption  and  all  harmonic parameters, from single-phase 2-wire to 3-phase  4-wire measurement lines

Simultaneous processing of power data and all harmonic data All data, including RMS values, mean values, DC components, AC components, fundamental wave components, harmonic measurement, and integration measurement, is processed in parallel internally. There is no need to switch modes depending on whether you wish to acquire power data or harmonic data- - simply switch the display to obtain measured values with true simultaneity. Additionally, PC communications software* can be used to capture measurement data, including from multiple synchronized instruments.

High-accuracy measurement, even with low- power-factor input Because power factor has little impact at just ±0.1% f.s., the PW3336/PW3337 can measure active power of low-power-factor input at a high level of accuracy, for example during no-load- loss testing, a technique that is used to evaluate energy-saving performance of transformers. Even though the high current waveform crest factor that typically accompanies no-load operation causes the power factor to deteriorate, measurements taken with the PW3336/PW3337 series remain accurate under these conditions.

Wide frequency band of DC and 0.1 Hz to 100 kHz Thanks to a wide-band capability extending from DC and 0.1 Hz to 100 kHz, the PW3336/PW3337 can cover not only inverters’ fundamental frequency band, but also the carrier frequency band.

Integrating fluctuating power values The power consumption of equipment subject to a fluctuating load, for example refrigerators, heaters, and pumps, varies considerably between rated operation and no-load operation. Thanks to its broad dynamic range, the PW3336/PW3337 can perform integrated power measurement with guaranteed accuracy using a single range, even if the power fluctuates dramatically during integration. Measurements can accommodate waveform peaks of up to 600% of the range rating.

Advanced functions

• Extensive built-in features including harmonic measurement, current sensor input, synchronized  control, and a wide selection of interfaces
• IEC61000-4-7 compliant harmonic measurement
• Large selection of interfaces
• 16-channel D/A output (-02, -03)
• Synchronized control using up to 8 instruments
• Current sensor connectivity

Applications

• Research, development, and testing of equipment with 3-phase power supplies such as transformers, motors, air-conditioners, and heavy machinery
• Measuring the efficiency of power conditioners used in solar power installations
• Measuring power supply devices such as 3-phase/3-phase inverters
• Measuring the primary-side, internal circuitry, and secondary-side power consumption in uninterruptible power supplies (UPS)
• Simultaneous measurement of multiple loads

Software:

PW3336/PW3337 Communicator
The PW3336/PW3337 Communicator connects with the power meters via the LAN, RS-232C, or GP-IB (-01, -03) interface, and is available for free download from the HIOKI website*. Functionality includes configuring instruments, capturing interval data, performing  numerical calculations based on measurement data, calculating efficiency values across multiple units, displaying 10 or more measurement  parameters, and displaying waveforms.

LabVIEW Driver
Use LabVIEW* to collect data and integrate the power meter into existing systems.  (Available soon)
*LabVIEW is a trademark of National Instruments Corporation.