658 Power Quality Analyzer

658 Power Quality Analyzer

The 658 can be used to monitor power disturbances and harmonics, as well as other sources of disruption like temperature, humidity, and radiated RF noise, making it the ideal tool for field service and site surveys. Dranetz has discontinued this instrument and recommends the PX5 or PX5-400 for all your current power quality analyzer needs.

658 Three-phase with built in screen and printer


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Not ready to upgrade?

Dranetz has Discontinued this product and we strongly recommend that you consider upgrading your instrument for all your current power quality analyzer needs to the recommended product upgrade: PX5, PX5-400.
Please note: This is a discontinued product. Options/Accessories associated with this product may no longer be available.

Not Ready to Upgrade?

Dranetz provides several options to help you upgrade your product affordably. We can work with you to determine the best solution for your situation. Contact our Sales department today as ask about our trade-in options. If you are unable to upgrade, please be aware that your instrument should be serviced and calibrated yearly for optimal accuracy, and you may be eligible for service incentives. Please contact our sales department to discuss your situation.

Features & Highlights

  • True RMS voltage and current mete
  • Scope Mode®, Meter Mode
  • Event monitor - report by exception
  • Menu driven operation
  • Harmonics analyzer
  • 50/60 and 400Hz monitoring
  • Cycle-by-cycle disturbance capture
  • Capture multiple transients and complex waveshapes
  • 6000 volt impulse auto range
  • Simultaneous channel capture
  • Graphic summaries
  • Zoom in on events
  • Transducer inputs
  • Built in 3.5" floppy drive
  • Dran-View PC analysis and report writer software

658 Power Quality Analyzer Specifications

Voltage & Current Measurement

4 fully differential channels
One AC/DC voltage channel and 3 voltage/current channels
0-600Vrms; 0-3000A, depending on current probe selected
Accuracy: ±1% reading ±0.2% full scale

Impulse Measurement

2.4 to 6144 Vpeak
2.4 to 6000 Amps pk
1 microsecond minimum duration

Sampling Rate

7.2kHz/channel for RMS
1.85MHz/channel for impulse


Fundamental range 45 - 65 Hz
Optional Model 658-400 45-65Hz or 310-445 Hz

Optional Inputs

8 independent differential channels
Configurable as voltage or current
0-10Vdc, 0-20mA DC
Sampled at 12.5 Hz


41°F to 104°F
+5°C to +40°C
Humidity 10% - 90% non-condensing


Standard 5 minutes operation typical

PC Software



UL, CE, FCC, ISO-9100
(CE certification for model 658E, UL listing for model 658)


Please note: This is a discontinued product. Options/Accessories associated with this product may no longer be available.  

Options and Accessories for 658 Power Quality Analyzer

Options & Accessories

Radiated RF Sensor
Radiated RF Sensor

Detects disruptive radiation from transmitters, spark gaps, and other sources. Requires 656-PA-1001

Conducted RF Sensor
Conducted RF Sensor

Detects disruptive conducted RF interference from transmitters, spark gaps, and other sources. Requires 656-PA-1001

Eight Channel Transducer Module
Eight Channel Transducer Module

Allows the 658 to accept up to 8 inputs from external transducers, for trend data on temperature, humidity, RFI, other parameters. Accepts 0-10VDC or 0-20mA inputs

Temperature/Humidity Sensor
Temperature/Humidity Sensor

Detects disruptive temperature and/or humidity events that are often mis-identified as power problems Requires 656-PA-1001

Soft Carry Case
Soft Carry Case

Rugged cordura nylon carry case holds 658, voltage probes, CTs, and manual. Ideal for field service, utility applications.

Rugged Shipping Container
Rugged Shipping Container

Protects the analyzer during repeated shipping. Conforms to NSTA Project 1A vibration and drop specification. Includes space for cables, probes, accessories. Ideal for 658s that are shared between offices or carried in trucks and car trunks.


Current probe, 1A-30A RMS, 48Hz-10kHz,
Max conductor size 20mm
Requires cable adaptor CA4300


Current probe, 50A-300A RMS 30Hz-5kHz;
Max conductor size 52mm
Requires cable adaptor CA4300


Current probe, 10A - 1000A RMS 30Hz-5kHz;
Max conductor size 54mm
Requires cable adaptor CA4300


Current probe, 200A - 3000A RMS 30Hz-5kHz;
Max conductor size 65mm
Requires cable adaptor CA4300


Current input, 0.1A-10.0A RMS; 50Hz-3kHz Ideal for use with existing 5 amp secondary current transformers


How To Upgrade
Considering an upgrade? You've got options, just ask us: Trade it in, trade it up, but don't throw it out!
Upgrade Now!

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Try it before you buy it
Make sure you are buying the right tool for the job. Schedule a personal Dranetz product demo at your location, at your convenience.
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