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Fluke 345 Power Quality Clamp Meter

 Fluke 345 Power Quality Clamp on Meter

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

The suggested single phase replacement is the Fluke 43B Power Quality Analyzer with an i3000s Current Clamp. If a 3-phase instrument is a better solution for your application, the 1735434 or 435 are suggested replacements.

Fluke 345

  • 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
Display
Color transmissive LCD 320 x 240 pixels (70 mm diagonal) with 2 level backlight  

Power supply
 Battery type 1.5 V Alkaline AA MN 1500 or IEC LR6 x 6
Battery life typically
 > 10 hours (backlight on full)
 > 12 hours (backlight reduced)
Battery Eliminator BE345
Input  110/230 V 50/60 Hz
Output  15 V dc, 300 mA

Ambient conditions (For indoor use only)
Reference conditions
 All accuracies stated at 23˚C ± 1˚C (73.4 °F ± 1.8 °F)
Operating temperature
 0 °C to 50 °C (32 °F to 122 °F)
Temperature coefficient of current
 ≤ ± 0.15 % of rdg per °C
Temperature coefficient of voltage
 ≤ ± 0.15 % of rdg per °C
Maximum relative humidity
 80 % for temperatures up to 31 °C (87 °F) decreasing linearly to 50 % relative humidity at 40 °C (104 °F)
Maximum operating altitude
 2000 m

Electrical safety
Maximum safe working voltages
 Safety IEC 61010-1 600 V CAT IV double or reinforced insulation, pollution degree 2
 Protection IP40; EN60529
Current measurement
 600 V ac rms or dc between uninsulated conductor and ground
Voltage measurement
 600 V ac rms or dc between either input terminal and ground, or 825 V between energized phase voltages (delta power config.)

EMC
Emission
 IEC/EN 61326-1:1997 class A
Immunity
 IEC/EN 61326-1:1997 Annex C Performance Criterion B

Mechanical
Dimensions (length x width x depth)
 300 mm x 98 mm x 52 mm (12 in x 3.75 in x 2 in)
Weight including batteries
 820 g/1.8 lb
Jaw opening
 60 mm
Jaw capacity
 58 mm diameter
Cleaning
 The unit can be cleaned with an Isopropanol impregnated cloth. Do not use abrasives or other solvents.

Electrical data
All accuracies stated at 23 °C ± 1 °C (73.4 °F ± 1.8 °F). See Ambient conditions specifications for temperature coefficients.
 

Current measurement (dc, dc rms, ac rms)
Measuring range
 0 to 2000 A dc or 1400 ac rms
Autorange facility
 40 A / 400 A / 2000 A
Resolution
 10 mA in 40 A range
 100 mA in 400 A range
 1 A in 2000 A range
Accuracy: DC and dc rms
I > 10 A:  ± 1.5 % rdg ± 5 digits
I < 10 A:  ± 0.2 A
Accuracy: AVG
I > 10 A:  ± 3 % rdg ± 5 digits
I < 10 A:  ± 0.5 A
Accuracy: Pk
I > 10 A:  ± 5 % rdg ± 5 digits
I < 10 A:  ± 0.5 A
Accuracy: AHr
I > 10 A:  ± 2 % rdg ± 5 digits
I < 10 A:  ± 0.5 AHr
Accuracy: CF (Crest Factor)
1.1 ≤ CF < 3:  ± 3 % rdg ± 5 digits
3 ≤ CF < 5:  ± 5 % rdg ± 5 digits
Resolution:  0.01
Accuracy: RPL (Ripple)
2 % ≤ RPL < 100 %:  ± 3 % rdg ± 5 digits
100 % ≤ RPL < 600 %:  ± 5 % rdg ± 5 digits
Resolution:  0.1 %
Idc > 5 A, Iac > 2 A  
All measurements dc and 15 Hz to 1 kHz
Maximum overload 10,000 A or rms x frequency < 400,000
Amps rms is a true-rms measurement (ac + dc)
 

Voltage measurement (dc, dc rms, ac rms)
Measuring range
 0 to 825 V dc or ac rms
Autorange facility
 4 V / 40 V / 400 V / 750 V
Resolution
 1 mV in 4 V range
 10 mV in 40 V range
 100 mV in 400 V range
 1 V in 750 V range
Accuracy: DC and dc rms
V > 1 V:  ± 1 % rdg ± 5 digits
V < 1 V:  ± 0.02 V
Accuracy: AVG
V > 1 V:  ± 3 % rdg ± 5 digits
V < 1 V:  ± 0.03 V
Accuracy: Pk
V > 1 V:  ± 5 % rdg ± 5 digits
V < 1 V:  ± 0.03 V
Accuracy: CF (Crest Factor)
1.1 ≤ CF < 3:  ± 3 % rdg ± 5 digits
3 ≤ CF < 5:  ± 5 % rdg ± 5 digits
Resolution:  0.01
Accuracy: RPL (Ripple)
2 % ≤ RPL < 100 %:  ± 3 % rdg ± 5 digits
100 % ≤ RPL < 600 %:  ± 5 % rdg ± 5 digits
Resolution:  0.1 %
Vdc > 0.5 V, Vac > 0.2 V  
 All measurements dc and 15 Hz to 1 kHz
Maximum overload 1,000 V rms
Volts rms is a true-rms measurement (ac + dc)

Harmonics
THD (Total Harmonic Distortion)
1 % ≤ THD < 100 %:  ± 3 % rdg ± 5 digits
100 % ≤ THD < 600 %:  ± 5 % rdg ± 5 digits
Resolution:  0.1 %
DF (Distortion Factor)
1 % ≤ DF < 100 %:  ± 3 % rdg ± 5 digits
Resolution:  0.1 %
H02 ≤ Vharm < H13:  ± 5 % ± 2 digits
H13 ≤ Vharm ≤ H30:  ± 10 % ± 2 digits
 All measurements up to 30th harmonic (40th harmonic for 15 Hz to 22 Hz)
Frequency range of fundamental F0 15 Hz to 22 Hz and 45 Hz to 65 Hz
Vacrms > 1V

Watts measurement (single- and three-phase) (dc, dc rms, ac rms)
Measuring range
 0 to 1650 kW dc or 1200 kW ac
Autoranging facility
 4 kW, 40 kW, 400 kW, 1650 kW
Resolution
 1 W in 4 kW
 10 W in 40 kW
 100 W in 400 kW
 1 kW in 1200 kW
Accuracy
 2.5 % rdg ± 5 digits
 W1Ø < 2 kW ± 0.08 kW
 W3Ø < 4 kW ± 0.25 kW

VA measurement (single- and three-phase) (dc, dc rms, ac rms)
Measuring range
 0 to 1650 kVA dc or 1200 kVA ac
Autorange facility
 4 kVA, 40 kVA, 400 kVA, 1650 kVA
Resolution
 1 VA in 4 kVA
 10 VA in 40 kVA
 100 VA in 400 kVA
 1 kVA in 1200 kVA
Accuracy
VA > 2 kVA:  2.5 % rdg ± 5 digits
VA < 2 kVA:  ± 0.08 kVA

VAR measurement (single- and three-phase)
Measuring range
 0 to 1250 kVAR
Autorange facility
 4 kVAR, 40 kVAR, 400 kVAR, 1200 kVAR
Resolution
 1 VAR in 4 kVAR
 10 VAR in 40 kVAR
 100 VAR in 400 kVAR
 1 kVAR in 1200 kVAR
Accuracy
VAR > 4 kVAR:  ± 2.5 % rdg ± 5 digits
VAR < 4 kVAR:  ± 0.25 kVAR
Power factor range
 0.3 < PF < 0.99

Power factor (single- and three-phase)
Measuring range
 0.3 capacitive to 1.0 and 1.0 to 0.3 inductive (72.5° capacitive to 0° and 0° to 72.5° inductive)
Resolution
 0.001
Accuracy
 ± 3°
Frequency range
 15 Hz to 1 kHz

Displacement power factor (single- and three-phase)
Measuring range
 0.3 capacitive to 1.0 and 1.0 to 0.3 inductive (72.5° capacitive to 0° and 0° to 72.5° inductive)
Resolution
 0.001
Accuracy
 ± 3°
Frequency range
 15 Hz to 22 Hz and 45 Hz to 65 Hz

Kilowatt hour (kWHr)
Measuring range
 40,000 kWHr
Autorange facility
 4 kWHr, 40 kWHr, 400 kWHr, 4,000 kWHr, 40,000 kWHr
Resolution
 1 WHr in 4 kWHr Range
 10 WHr in 40 kWHr Range
 100 WHr in 400 kWHr Range
 1 kWHr in 4,000 kWHr Range
 10 kWHr in 40,000 kWHr Range
Accuracy
kWHr > 2 kWHr:  ± 3 % ± 5 digits
kWHr < 2 kWHr:  ± 0.08 kWHr
All Watts /VA /VAR /PF measurements
Frequency range:  DC and 15 Hz to 1 kHz
Current range:  10 A to 1400 A rms
Voltage range:  1 V to 825 V rms
Maximum input:  825 V rms/1400 A rms
Maximum overload:  1000 V rms/10,000 A All measurements dc and 15 Hz to 1 kHz. Maximum overload 10,000 A or rms x frequency < 400,000

Frequency measurement (from current or voltage sources)
Measuring range
 15 Hz to 1 kHz
Resolution
 0.1 Hz
Accuracy
 15 to 22 Hz ± 0.5 % rdg
 40 Hz to 70 Hz ± 0.5 % rdg
 15 Hz to 1000 Hz ± 1% rdg
Current range
 10 A to 1400 A rms
Voltage range
 1 V to 825 V rms

Scope function
Current measurement
Ranges:  10 A / 20 A / 40 A / 100 A / 200 A / 400 A / 1000 A / 2000 A
Resolution:  1 A in 40 A
10 A in 400 A
50 A in 2000 A
Accuracy:  ± 3 % rdg ± 1 pixel
Maximum overload:  10,000 A
Voltage measurement
Ranges:  4 V / 10 V / 20 V / 40 V / 100 V / 200 V / 400 V / 1000 V
Resolution:  100 mV in 4 V
1 V in 40 V
10 V in 400 V
31.25 V in 1000 V
Accuracy:  ± 2 % rdg ± 1 pixel
Maximum overload:  1000 V rms
Frequency range:  DC and 15 Hz to 600 Hz
Time base
 2.5 ms, 5 ms, 10 ms, 25 ms, 50 ms/div
Refresh rate
 0.5 seconds
Maximum sampling rate
 15.625 kHz

Inrush current function
Ranges
 40 A, 400 A, and 2000 A
Resolution
 10 mA in 40 A range
 100 mA in 400 A range
 1 A in 2000 A range
Accuracy
I > 10 A:  ± 5 % rdg ± 1 pixel
I < 10 A:  ± 0.5 A
 All measurements dc and 15 Hz to 1 kHz
Maximum overload
 Maximum overload 10,000 A or rms x frequency < 400,000
 Amps rms is a true-rms measurement (ac + dc)
Capture time
 1 s, 3 s, 10 s, 30 s, 100 s, and 300 s
Maximum sampling rate
 15.625 kHz

Interface
 USB Interface to a PC
 Power Log software for download, analysis and reporting
 345 Upgrade Utility for installing a new firmware version

Logging Memory
Logging areas
 Three areas that can be used individually or combined into one large area
Averaging periods
 1 s, 2 s, 5 s, 10 s, 30 s, 1 min, 5 min, 10 min, 15 min, and custom

Logging Times
Volts and current mode
Average time  Logging time (1 area)
1 s  1 h 49 m
2 s  3 h 38 m
5 s  9 h 6 m
10 s  18 h 12 m
30 s  2 d 6 h 36 m
1 min  4 d 13 h 12 m
5 min  22 d 18 h 0 m
10 min  45 d 12 h 0 m
15 min  68 d 6 h 0 m
 Logging time (3 areas)
1 s  5 h 12 m
2 s  10 h 24 m
5 s  1 d 2 h 00 m
10 s  2 d 4 h 00 m
30 s  6 d 12 h 1 m
1 min  13 d 0 h 12 m
5 min  65 d 0 h 15 m
10 min  130 d 0 h 30 m
15 min  195 d 0 h 45 m
V & A harmonics mode
Average time  Logging time (1 area)
1 s  0 h 34 m
2 s  1 h 8 m
5 s  2 h 52 m
10 s  5 h 44 m
30 s  17 h 13 m
1 m  1 d 10 h 26 m
5 m  7 d 4 h 10 m
10 m  14 d 8 h 20 m
15 m  21 d 12 h 30 m
 Logging time (3 areas)
1 s  1 h 38 m
2 s  3 h 16 m
5 s  8 h 11 m
10 s  16 h 23 m
30 s  2 d 1 h 11 m
1 m  4 d 2 h 23 m
5 m  20 d 11 h 25 m
10 m  81 d 0 h 50 m
15 m  121 d 13 h 15 m
single- and three-phase power mode
Average time  Logging time (1 area)
1 s  1 h 40 m
2 s  3 h 21 m
5 s  8 h 22 m
10 s  16 h 45 m
30 s  2 d 2 h 17 m
1 m  4 d 4 h 35 m
5 m  20 d 22 h 55 m
10 m  41 d 21 h 50 m
15 m  62 d 20 h 45 m
 Logging time (3 areas)
1 s  4 h 47 m
2 s  9 h 34 m
5 s  23 h 57 m
10 s  1 d 23 h 54 m
30 s  5 d 23 h 25 m
1 m  11 d 23 h 25 m
5 m  59 d 21 h 5 m
10 m  119 d 18 h 10 m
15 m  179 d 15 h 15 m
Model NameDescriptionPrice List
Fluke 345 Power Quality Clamp Meter
Includes:
  • 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
On Request

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Cases and HolstersPrice List
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LightsPrice List
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