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Fluke 345 Power Quality Clamp Meter

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Excl. Tax: £1,084.00 Incl. Tax: £1,300.80
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Quick Overview

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

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

Applications

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


Fluke 345 Power Quality Clamp Meter

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Details

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


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