Hioki PW3360 Clamp On Power Logger for Practical Energy Audits and Power Monitoring
For energy audits, power monitoring, and verification of energy-saving measures, technicians often need a logger that is compact, safe, and easy to install in real electrical environments. The Hioki PW3360 Clamp On Power Logger is designed for exactly that role, combining clamp-sensor-based power measurement, a compact portable body, and straightforward setup tools for single-phase and three-phase systems. Hioki describes the PW3360 as a compact 3-phase 4-wire energy logger that helps monitor power demand and other power parameters to support energy audits and energy conservation work.
One of the PW3360’s biggest advantages is its safe clamp-on measurement approach. Hioki explains that its clamp-on power meter design uses optional current sensors to measure power on single-phase to three-phase lines accurately and safely. This helps users avoid the added complexity and risk that can come with more invasive current measurement methods. For building maintenance teams, energy managers, and field technicians, that clamp-on design makes installation faster and more practical in live systems.
The PW3360 is also designed to support a broad range of wiring systems. Hioki states that it supports single-phase 2-wire, single-phase 3-wire, three-phase 3-wire, and three-phase 4-wire measurement, and can also simultaneously measure up to three single-phase 2-wire circuits within the same power system. This flexibility makes it useful for a wide variety of applications, from simple branch-circuit measurement to more complete facility power surveys.
Another major strength is ease of setup. Hioki highlights the QUICK SET function, which guides the user through the connection process directly on screen. The instrument also includes a wiring check function to help detect incorrect connections before measurement begins. In practical field use, this reduces setup errors and helps technicians get useful data faster, even if they are not highly specialized power quality users.
The PW3360 is also built for practical long-term logging. Hioki states that the instrument can store months of data on SD cards, and the specifications list both SD/SDHC card storage and internal memory as save destinations. Users can choose data save intervals from 1 second to 60 minutes, depending on the level of detail required. The logger also displays recorded values as graphs, allowing users to review instantaneous, maximum, minimum, and average values directly on the instrument. This makes it useful not only for collecting data, but also for reviewing trends on site.
From a measurement standpoint, the PW3360 covers the key values needed for energy studies and ongoing monitoring. Hioki lists measurement items including voltage RMS, current RMS, active power, reactive power, apparent power, power factor, active energy, reactive energy, energy cost display, and demand quantities, along with waveform peak values and phase angles. The voltage range is 600 V AC, with an effective measurement range of 90.00 V to 780.00 V, while current range depends on the connected sensor and can extend up to 5.0000 kA AC.
For users who need harmonic information, the PW3360-21 version adds that capability. Hioki states that this model supports harmonic measurements up to the 40th order, including harmonic voltage level, harmonic current level, harmonic power level, content percentage, phase angle, and total harmonic distortion. That makes the PW3360-21 a stronger choice when the application involves not only energy logging, but also basic analysis of distorted waveforms and harmonics in the facility.
Portability is another key benefit. Hioki emphasizes that the PW3360 has a slim, compact design and weighs just 550 g without the optional cover. The company specifically notes that it is small enough to install in a confined cubicle, which is often where practical energy logging needs to happen. This compact size makes it easier to carry, install, and leave in place for extended studies without taking up unnecessary space.
The PW3360 also supports digital workflow integration. Hioki lists LAN and USB 2.0 interfaces, and notes compatibility with GENNECT One SF4000 for capturing data remotely on a PC while testing. This adds useful flexibility for users who want to monitor and retrieve results without remaining directly beside the logger for the full measurement period.
It is important to note that the PW3360 is a main unit and requires at least one optional current sensor to measure current or power parameters. That modular approach is helpful because it lets users match the logger to the conductor size and current range of the application, but it also means current sensor selection is part of the buying decision. Hioki lists a range of compatible clamp and flexible current sensors depending on the required measurement range.
For electricians, facility teams, energy managers, and service professionals looking for a safe and practical tool for energy audits, demand logging, and power monitoring, the Hioki PW3360 offers a strong combination of clamp-on safety, simple setup guidance, multi-circuit flexibility, and long-duration data logging. For users who also need harmonic visibility, the PW3360-21 adds another useful layer of analysis.
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