PS4550 - Power & Energy Analyzer

THE POWERSIGHT PS4550 POWER QUALITY ANALYZER is a versatile, easy-to-use power quality analyzer that is ideal for comprehensive power quality studies, energy audits, load studies, harmonic analysis, and more. The PS4550 couples small size with sophisticated triggering and event capture to answer your power quality questions.

Combined with our Advanced PowerSight Manager software, the PS4550 is the Most Efficient and Error Free Solution for Power Studies.

It can:

  • Catch power quality events such as fast transients (impulses) to 8 microseconds, voltage sags (dips), and swells.
  • Measure total and individual harmonic distortion to the 50th harmonic
  • Record energy use (kWh), and log all power parameters: watts, VA, Power Factor, etc.
  • Data log RMS voltage and current over time (days/weeks/months) with down to one second resolution
  • Display real time values in meter window – just like a multimeter
  • Display oscilloscope waveforms, harmonic spectra, phasors via a PC with Bluetooth wireless or USB communications
  • Measure DC voltage and current
  • Monitor 50Hz, 60Hz, 400Hz, and variable frequency systems


It's rubberized contoured case and rugged construction make the PS4550 ideal for field work. Clearly labeled buttons display present maximum, minimum, and average values on a back-lit LCD screen for quickly making spot measurements and over-all evaluation at panels and equipment. Our patented SureStart feature automatically checks for wrong connections before you begin monitoring to ensure a successful power study every time.  Our TestPlan Manager integration loads the entire test plan into the meter to insure that the correct data is generated and is retrieved efficiently.

Use it on just about any type of power system in the world. Redundant communications and data storage so there is always a way to communicate and get data. Set logging period from 1 second to 99 minutes for months of logging. At 1 second logging, capacity is essentially unlimited by using your SD card (32GB maximum). Data is saved to internal memory that can be downloaded to a PC via Bluetooth, USB, or optional Wi-Fi. In addition, the PS4550 includes a removable SD memory card slot that allows you to backup power survey data and transfer the data to a PC via an SD card. PC software and Report Writer are included.


High-speed sampling to 8 microseconds offers high performance for capturing spikes and transients. Cycle-by-cycle RMS measurement provides the greatest accuracy for data logging. Half-cycle RMS measurement provides highest resolution for triggering and tracking voltage fluctuations. Continuous sampling ensures no cycle is missed on any input. The meter is never "blind" or idling.


The new safety regulations demand safer tools. The PowerSight PS4550 has a 1000V CAT III safety rating (600V CAT IV) - the smart choice for working on systems to 1000V.

Be Comfortable. Be Safe. Get relief from wearing PPE.

PowerSight meters and analyzers with Bluetooth wireless communications are the safest way to test. After installing the PowerSight analyzer and its probes, move safely away from high voltages and Arc Flash dangers and test remotely. At a safe distance, cumbersome PPE suits, hoods, gloves, etc. can be removed. Thus workers can more comfortably control their PowerSight analyzer, view connections, phasors, and real-time values, start/stop monitoring and download data in complete safety (up to 25 feet away) via their laptop or tablet computer.


PS4550 Power Quality Analyzer includes:

PS4550 Power Quality Analyzer
DXV deluxe voltage leads with Jumbo Alligator clips

AC Charger (specify 120 or 240 volt version)
PSM PowerSight Manager Software for PC
QSG - Quick Start Guide

Measures, logs, and reports:

  • RMS Volts
  • RMS Amps
  • Sags, Swells (surges) and inrush
  • Transients, impulses
  • Watts, VA , VAR , Power Factor, Hz
  • THD, Live / scope waveform views
  • Real time meters
  • Phasors
  • Harmonic Spectrum

Most Efficient and Error Free Solution for Power Studies:

  • TestPlan Manager - to create a test plan, manage resources, and track status
  • Data Setup Wizard - to insure you get the measurements that you need
  • SureStart Expert System - to verify that connections and settings are correct, prior to starting
  • TestPlan Manager - to integrate the plan into the meter and to retrieve the data according to your needs, without error
  • ReportWriter Wizard - to quickly / accurately create your final report

General Specs

Category Notes
Size: 3.89" (9.86 cm) W x 7.72" (19.61 cm) L x 1.58" (4.01 cm) Deep at bottom end; 2.14" (5.44 cm) Deep at top end
Weight 1.1 lbs (0.5 kg)
Operating Range 32 - 122 degrees F (0 - 50 degrees C) Relative humidity to 70% (non-condensing)
Power Requirement 12V DC @ 500 mA.
Battery Life 8-10 hours after 4 hour charge
Battery Type Li-ion
Sampling Rate 8 microseconds for Voltage and Current
Safety 1000V CAT III, 600V CAT IV
SD Card Slot Accepts SD Cards to 32GB
Logging Period (Resolution) 1 Second - 99 Minutes (set by user)
Logging Duration (Length of session) up to 2 years according to memory allocation
Communications Bluetooth Wireless and USB at 460.8 kbps, Wi-Fi optional

Voltage Measurement

Category Notes
Range 1-1000 Vrms Steady-State (direct input)
Measurement Range 1-6000 kV (using input ratios)
Accuracy ±0.1 % of reading ±0.3 Vrms

Current Measurement

Category Notes
Range Depends on probes
Display Range 1 mA - 6 Megamps (using input ratios)
Accuracy ±0.1 % of reading plus accuracy of probes

Frequency Measurement

Category Notes
Range DC, 22 - 200 Hz, 360 - 440 Hz Fundamental
Accuracy ±0.25%

Harmonics Measurement

Category Notes
Range 22 - 3000 Hz (50th Harmonic @ 50/60 Hz)
Accuracy ±0.25%


Category Notes
Swell/Sag (Dip)/Inrush 1/2 Cycle RMS
Transient Detection 8 microseconds, instantaneous
Harmonics Accuracy ±0.25%