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3-Phase 4-Wire Portable Power Loggers for Energy Audits and Energy Conservation





HIOKI Clamp On Power Meters are multi-channel power measuring devices utilizing clamp sensor input to accurately and safely measure power on single-phase to three-phase lines. The PW3360 monitor power demand and other power parameters to aid in energy audits and validate energy saving measures. CLAMP ON POWER LOGGER

PW3360-20                    main unit only
PW3360-21                    harmonic analysis model

Note: At least one optional current sensor is necessary to measure current or power parameters. To store measurement data, use only the guaranteed SD cards sold by HIOKI.


Key Features

• Supports single to three-phase, 4-wire circuits

• Measure between 90V to 780V

• Simultaneously measure up to three single-phase, 2-wire circuits (in the same power system)

• Slim, compact design that can be placed anywhere

• Store months of data on SD cards

• The QUICK SET function guides you in making the right connections

• Choose PW3360-21 for harmonic measurements up to the 40th order

Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year) CLAMP ON POWER LOGGER


Measurement line & number of circuits


50/60 Hz, Single phase 2 wires (1/2/3 circuits), Single phase 3 wires (1 circuit), Three phases 3 wires (1 circuit), Three phases 4 wires (1 circuit), Current only: 1 to 3 channels

Measurement items  

Voltage RMS, current RMS, voltage fundamental wave value, current fundamental wave value, voltage fundamental wave phase angle, current fundamental wave phase angle, frequency (U1), voltage waveform peak (absolute value), current waveform peak (absolute value), active power, reactive power (with lag/lead display), apparent power, power factor (with lag/lead display) or displacement power factor (with lag/lead display), active energy (consumption, regeneration), reactive energy (lag, lead), energy cost display, active power demand quantity (consumption, regeneration), reactive power demand quantity (lag, lead), active power demand value (consumption, regeneration), reactive power demand value (lag, lead), power factor demand, pulse input
[PW3360-21 only]: Harmonic voltage level, harmonic current level, harmonic power level, content percentage, phase angle, total harmonic distortion (THD-F or THD-R), up to 40th order


Voltage ranges


600 V AC (Effective measurement range: 90.00 V to 780.00 V)


Current ranges


500.00 mA to 5.0000 kA AC (depends on current sensor in use),
50.000 mA to 5.0000 A AC (Leak clamp on sensor only)


Power ranges


300.00 W to 9.0000 MW (Depends on voltage/current combination and measured line type)


Basic accuracy


Voltage : ±0.3% rdg. ±0.1% f.s
Current : ±0.3% rdg. ±0.1% f.s. + clamp sensor accuracy
Active power : ±0.3% rdg. ±0.1% f.s. + clamp sensor accuracy (at power factor = 1)


Display update rate


0.5 sec (except when accessing SD card or internal memory, or during LAN/USB communication)


Save destination


SD memory card, or internal memory at real time


Data save interval


1 sec to 30 sec, 1 minute to 60 minutes, 14 selections


Save items


Measurement value save: Average only / Average, Maximum, Minimum value
[PW3360-21 only]: Harmonic data save: Average only / average, maximum, minimum value in binary format
Screen copy: BMP form (saved every 5 min. at minimum interval time)
Waveform save: Binary waveform data


SD memory card
HTTP server function, Remote settings by communication program, or data downloads
USB 2.0: When connected to a PC, the SD card and internal memory are recognized as removable storage devices, Remote settings by communication program, or data downloads
Pulse output: proportional to active power consumption when measuring integral power consumption, Isolated open-collector signal




Connection check, Quick Set navigation guide, clock, pulse input


Power supply


AC Adapter Z1006: (100 to 240 V AC, 50/60 Hz), 40 VA (including AC adapter)
Battery Pack 9459: (DC 7.2 V, 3 VA, charging time 6 hr 10 m), 8 hours of continuous use (with back light off)


Dimensions and mass


180 mm (7.09 in) W × 100 mm (3.94 in) H × 48 mm (1.89 in) D, 550 g (19.4 oz) without PW9002
180 mm (7.09 in) W × 100 mm (3.94 in) H × 67.2 mm (2.65 in) D, 830 g (29.3 oz) with PW9002



Voltage Cord L9438-53 × 1 set, AC Adapter Z1006 × 1, USB cable × 1, Instruction manual × 1, Measurement guide × 1, Color spiral tubes × 1 set: red, yellow, blue/two each, for color-coding clamp sensors, Spiral tubes for grouping clamp sensor cords × 5

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