Fluke 345 Power Quality Clamp Meter

Model: 345

A simple yet useful single phase power quality clamp meter with large graphical display designed for short-term recording and troubleshooting of power quality on a single phase system or single leg of a three phase system up to 1400A AC.

Add In House NIST Traceable Calibration to your 345

1 to 2 Weeks

$2,699.99 USD


This clamp on meter is a combination power analyzer, power quality logger, and clamp meter, and is ideal for monitoring electronic loads.

The Fluke 345 is more than an electric power meter. Combining the functions of a clamp meter, oscilloscope, data logger and digital power meter into one handy device, the Fluke 345 is ideal for working with variable frequency motor drives, high efficiency lighting and other loads using switching electronics.

One of the leading wattage meters of the world, the multi-faceted Fluke 345 is packed with features such as a bright, color display to analyze the harmonic spectrum, a low-pass filter to remove high frequency noise and a high EMC immunity design, making the Fluke 345 power analyzer ideal for troubleshooting power quality on switching loads. The internal memory of this electric power meter enables long-term power quality logging for analysis of trends or intermittent problems. Additionally, the Hall Effect clamp meter design makes measurement of dc current possible without the need to break the circuit.

Besides effectively performing basic tasks like measuring wattage, the Fluke 345 power meters offer the ease of use, portability and flexibility needed to resolve most power issues in commercial, industrial and residential settings.

  • Setup and troubleshoot variable frequency drives and UPS systems - Verify correct operation by measuring key power quality parameters
  • Harmonics measurements - Uncover harmonic issues that can damage or disrupt critical equipment
  • Inrush capture - Check start-up current where spurious resets or nuisance circuit breaker tripping occurs
  • Load studies - Verify electrical system capacity before adding loads

What's Included

  • 345 Power Quality Clamp Meter
  • Soft carrying case
  • Power Log software
  • Test leads
  • Alligator clips
  • Test probes
  • USB cable
  • International ac adapter / battery eliminator
  • Printed English language user manual
  • Multi-language manual CD

Key Features

  • AC/DC current: Clamp-on measurement of ac current up to 1400 A rms and dc current up to 2000 A without breaking the circuit
  • Highest safety rating: 600 V CAT IV power analyzer is rated for use at the service entrance
  • Accurate in noisy environments: Clamp meter performs even with distorted waveforms present on electronic loads with low-pass filter
  • Data logging: Identify intermittent faults by logging any power quality parameter for minutes, or over a month, including harmonics
  • Verify batteries: Direct measurement of dc ripple (%) for battery and dc systems
  • Troubleshoot harmonics: Analyze and log harmonics digitally or graphically
  • Inrush current: Capture and analyze nuisance tripping, from 3 seconds to 300 seconds
  • Easy to use: Easily confirm power meter setup with large backlit color display of waveforms and trends
  • 3-Phase power: Built in capability for balanced loads
  • View graphs and generate reports: Use power analyzer with included Power Log software


Battery Life>10-12 hours
Battery Type6x aa
CAT III Rating1000v
CAT IV Rating600v
Current AC Accuracy3% ± 5 counts
Current DC Accuracy1.5 % ± 5 counts
Current Inputs1
Dimensions300 mm x 98 mm x 52 mm (12 in x 3.75 in x 2 in)
IP Ratingip40
Jaw Opening2.3
Max Wire Size750/3x 500
Operating Temperature32°f to +122°f (0°c to +50°c)
Sample Rate9.6
Typical Recording Period1
Voltage AC Accuracy1 % + 5 counts
Voltage DC Accuracy1 % + 5 counts
Voltage Inputs1
Warranty2 years
Weight820 g (1.8 lb)
Click here for complete specifications on the Fluke 345


Click on a category to view a selection of compatible accessories with the Fluke 345 Power Quality Clamp Meter.

Fluke AC220 SureGrip Alligator Clips AC220
Designed to improve steadiness with rubber overmolded surfaces and finger-hugging curves.
$44.99 USD

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Fluke C345 Soft Carrying Case C345
For use with the Fluke 345.
$89.99 USD

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Fluke C550 Premium Tool Bag C550
Tool Bag with steel reinforced frame.
$99.99 USD

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Fluke L200 Probe Light L200
Easily attaches to any Fluke test probe.
$29.99 USD

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Fluke L210 Probe Light Kit L210
L200 Probe Light and Probe Extenders.
$44.99 USD

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Fluke TLK291 fused test probe set TLK291
For use with Fluke multimeters and test leads.
$79.99 USD

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Fluke TP1 Slim Reach Test Probe Set TP1
For probing closely spaced or recessed terminals designed to hold securely in blade type electrical wall sockets.
$19.99 USD

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Fluke TP220 SureGrip Industrial Test Probes TP220
For use with TL222 and TL224 test leads provides reliable contact.
$19.99 USD

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