Fluke 435-II Series of Power Quality Analyzers

The Power Quality analyzers that can monetize the cost of energy waste due to poor power quality. More powerful sampling options, greater accuracy and larger memory makes the Fluke 435-II better for longer term, higher resolution or more demanding power quality studies. The wide range of measurement functions and measurement methods make it the perfect tool for both power quality troubleshooting and discovering energy savings. Whether you’re checking the performance of motors and generators, trying to discover the source of an intermittent power problem or performing an energy study…this tool gives you the data you need to quickly get to the source of the problem.

Discontinued!

This product has been discontinued and is no longer available.

There is no direct replacement, however we recommend the:

Fluke 1775 Three-Phase Power Quality Analyzer with current probes and WiFi/BLE adaptor, 8 kV

Model: 1775

Never miss a critical power quality event with this power quality analyzer that measures numerous variables. In addition, using a PPE-operable capacitive touch screen, this analyzer discovers equipment failures caused by transients and simplifies examining the overall power quality health of electrical systems.

Learn More

Fluke 1775/BASIC Three-Phase Power Quality Analyzer, 8 kV

Model: 1775/BASIC

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Not what you're looking for? Let’s do a search and help you find what you need.

Recommended Accessories

Fluke i200s AC Current Clamp

I200S

Fluke AC285 SureGrip Alligator Clips

AC285

Fluke 80I-110s AC/DC Current Clamp

80I-110s

Fluke 435-II Series Offers

Features

These power quality and energy analyzers help locate and predict, prevent and troubleshoot power quality problems in three-phase and single-phase power distribution systems
Energy Loss Calculator: classic active and reactive power measurements, unbalance and harmonic power, are quantified to pinpoint true system energy losses in dollars
Power Inverter Efficiency: Simultaneously measure AC output power and DC input power for power electronics systems using optional DC clamp
Troubleshoot Real-time: Analyze trends using cursors and zoom tools
Measure all Three Phases and Neutral: With included flexible current probes (4) with enhanced thin flex designed to fit into the tightest places
Automatic Trending: Every measurement is always automatically recorded, without any set-up
System Monitor: Ten power quality parameters on one screen according to EN61060 power quality standard
Logger Function: Configure for any test condition with memory for up to 600 parameters at user defined intervals
View Graphs and Generate Reports: With included analysis software
Battery Life: Seven hours of operating time per charge on Li-ion battery pack
Automatic Transient Mode: Capture 200kHz waveform data on all phases simultaneously up to 6kV
Fully Class A Compliant: Conduct tests according to stringent international IEC 61000-4-30 Class A standard
Mains Signalling: Measure interference from ripple control signals at specific frequencies

Voltage Measurements

Measuring Ranges: Vrms (AC+DC): 1 to 1000V; Vpk: 1 to 1400Vpk; Volt CF: 1.0 > 2.8
Resolution: Vrms (AC+DC): 0.01V; Vpk: 1V; Voltage Crest Factor: 0.01
Accuracy: Vrms (AC+DC): ± 0.5% of nominal range; Vpk: ± 0.1% of nominal range; Volt CF: ± 5%;M

Amp Measurements

Measuring Ranges: Amps (AC+DC): 5 to 6000A; Apk: 8400Apk; Amp Crest Factor: 1 to 10; Amps½: 5 to 6000A; Afund: 5 to 6000A
Resolution: Amps (AC+DC): 1A; Apk: 1Arms; Amp Crest Factor: 0.01; Amps½: 1A; Afund: 1A
Accuracy: Amps (AC+DC): ± 0.5% ± counts; Apk: ± 5%; Amp Crest Factor: ± 5%; Amps½: ± 1% ± 10 counts; Afund: ± 0.5% ± counts

Harmonics Measurements

Voltage Harmonic Ranges: %of: 0.0 to 100%; %or: 0.0 to 100%; Absolute: 0.0 to 1000V; THD: 0.0 to 100%
Volt Resolution: %of: 0.1%; %or: 0.1%; Absolute: 0.1V; THD: 0.1%
Volt Accuracy: %of: ± 0.1% ± n x 0.1%; %or: ± 0.1% ± n x 0.4%; Absolute: ± 5%; THD: ± 2.5%
Amp Harmonic Ranges: %of: 0.0 to 100%; %or: 0.0 to 100%; Absolute: 0.0 to 600A; THD: 0.0 to 100%
Amp Resolution: %of: 0.1%; %or: 0.1%; Absolute: 0.1A; THD: 0.1%
Amp Accuracy: %of: ± 0.1% ± n x 0.1%; %or: ± 0.1% ± n x 0.4%; Absolute: ± 5% ± 5 counts; THD: ± 2.5%

Applications

Frontline Troubleshooting – Quickly diagnose problems on-screen to get your operation back online
Long-Term Analysis – Uncover hard-to-find or intermittent issues
Load Studies – Verify the available electrical system capacity before adding loads
PowerWave Data Capture – Capture every waveform for up to 5 minutes along with fast RMS values so you can determine how the voltage, current and frequency values are interacting
Power Inverter Efficiency – Measure the input and output power simultaneously to discover whether the inverter is optimized for its application
Energy Monetization – Calculate the fiscal cost of energy waste due to poor power quality
Energy Assessment –Quantify the before and after installation improvements in energy consumption to justify energy saving devices
Predictive Maintenance – Periodic benchmarking of the power system can help detect and prevent power quality issues before they cause downtime

How to Get Faster Three-Phase Power Measurements with Fluke Clamp Meters

Complete three-phase voltage and current measurements 50% faster! We're confident in this because it's been tested at customer sites. The new clamp meters from Fluke (models 377 FC & 378 FC) feature FieldSense™ technology where voltage and current can be measured simultaneously with the clamp jaw. Meaning, these clamp meters can be used to make sequential line-to-ground measurements and current measurements that result in calculated line-to-line voltage measurements and phase rotation information.

In this application note, we walk you through the old versus the new way of doing phase-to-phase measurements along with step-by-step instructions on how to make these measurements.

Read the Application Note

How to Get Faster Three-Phase Power Measurements with Fluke Clamp Meters

Fluke 435-II Specifications

	Model	Measurement range	Resolution	Accuracy
Volt
Vrms (ac+dc)	435-II	1 V to 1000 V phase to neutral	0.01 V	± 0.1% of nominal voltage****
Vpk		1 Vpk to 1400 Vpk	1 V	5% of nominal voltage
Voltage Crest Factor (CF)		1.0 > 2.8	0.01	± 5 %
Vrms½	435-II		0.1 V	± 0.2% of nominal voltage
Vfund	435-II		0.1 V	± 0.1% of nominal voltage
Amps (accuracy excluding clamp accuracy)
Amps (ac +dc)	i430-Flex 1x	5 A to 6000 A	1 A	± 0.5% ± 5 counts
	i430-Flex 10x	0.5 A to 600 A	0.1 A	± 0.5% ± 5 counts
	1mV/A 1x	5 A to 2000 A	1A	± 0.5% ± 5 counts
	1mV/A 10x	0.5 A A to 200 A (ac only)	0.1 A	± 0.5% ± 5 counts
Apk	i430-Flex	8400 Apk	1 Arms	± 5 %
	1mV/A	5500 Apk	1 Arms	± 5 %
A Crest Factor (CF)		1 to 10	0.01	± 5 %
Amps½	i430-Flex 1x	5 A to 6000 A	1 A	± 1% ± 10 counts
	i430-Flex 10x	0.5 A to 600 A	0.1 A	± 1% ± 10 counts
	1mV/A 1x	5 A to 2000 A	1A	± 1% ± 10 counts
	1mV/A 10x	0.5 A A to 200 A (ac only)	0.1 A	± 1% ± 10 counts
Afund	i430-Flex 1x	5 A to 6000 A	1 A	± 0.5% ± 5 counts
	i430-Flex 10x	0.5 A to 600 A	0.1 A	± 0.5% ± 5 counts
	1mV/A 1x	5 A to 2000 A	1A	± 0.5% ± 5 counts
	1mV/A 10x	0.5 A A to 200 A (ac only)	0.1 A	± 0.5% ± 5 counts
Hz
Hz	Fluke 435 @ 50 Hz nominal	42.500 Hz to 57.500 Hz	0.001 Hz	± 0.01 Hz
Fluke 435 @ 60 Hz nominal	51.000 Hz to 69.000 Hz	0.001 Hz	± 0.01 Hz
Power
Watts (VA, var)	i430-Flex	max 6000 MW	0.1 W to 1 MW	± 1% ± 10 counts
	1 mV/A	max 2000 MW	0.1 W to 1 MW	± 1% ± 10 counts
Power factor (Cos j/DPF)		0 to 1	0.001	± 0.1% @ nominal load conditions
Energy
	kWh (kVAh, kvarh)	i430-Flex 10x	Depends on clamp scaling and V nominal	± 1% ± 10 counts
	Energy loss	i430-Flex 10x	Depends on clamp scaling and V nominal	± 1% ± 10 counts Excluding line resistance accuracy
Harmonics
Harmonic order (n)			DC, 1 to 50 Grouping: Harmonic groups according to IEC 61000-4-7
Inter-harmonic order (n)			OFF, 1 to 50 Grouping: Harmonic and Interharmonic subgroups according to IEC 61000-4-7
Volts	%f	0.0 % to 100 %	0.1 %	± 0.1% ± n x 0.1 %
	%r	0.0 % to 100 %	0.1 %	± 0.1% ± n x 0.4 %
	Absolute	0.0 to 1000 V	0.1 V	± 5% *
	THD	0.0 % to 100 %	0.1 %	± 2.5 %
Amps	%f	0.0 % to 100 %	0.1 %	± 0.1% ± n x 0.1%
	%r	0.0 % to 100 %	0.1 %	± 0.1% ± n x 0.4 %
	Absolute	0.0 to 600 A	0.1 A	± 5% ± 5 counts
	THD	0.0 % to 100 %	0.1 %	± 2.5 %
Watts	%f or %r	0.0 % to 100 %	0.1 %	± n x 2%
	Absolute	Depends on clamp scaling and V nominal	-	± 5% ± n x 2 % ± 10 counts
	THD	0.0 % to 100 %	0.1 %	± 5 %
Phase Angle		-360° to +0°	1°	± n x 1°
Flicker
Plt, Pst, Pst(1min) Pinst		0.00 to 20.00	0.01	± 5 %
Unbalance
Volts	%	0.0 % to 20.0 %	0.1 %	± 0.1 %
Amps	%	0.0 % to 20.0 %	0.1%	± 1 %
Mains signaling
Threshold levels		Threshold, limits and signaling duration is programable for two signaling frequencies	-	-
Signaling frequency		60 Hz to 3000 Hz	0.1 Hz
Relative V%		0 % to 100 %	0.10 %	± 0.4 %
Absolute V3s (3 second avg.)		0.0 V to 1000 V	0.1 V	± 5 % of nominal voltage

General specifications
Case	Design Rugged, shock proof with integrated protective holster Drip and dust proof IP51 according to IEC60529 when used in tilt stand position Shock and vibration Shock 30 g, vibration: 3 g sinusoid, random 0.03 g 2 /Hz according to MIL-PRF-28800F Class 2
Display	Brightness: 200 cd/m 2 typ. using power adapter, 90 cd/m 2 typical using battery power Size: 127 mm x 88 mm (153 mm/6.0 in diagonal) LCD Resolution: 320 x 240 pixels Contrast and brightness: user-adjustable, temperature compensated
Memory	8GB SD card (SDHC compliant, FAT32 formatted) standard, upto 32GB optionally Screen save and multiple data memories for storing data including recordings (dependent on memory size)
Real-time clock	Time and date stamp for Trend mode, Transient display, System Monitor and event capture

Environmental
Operating temperature	0 °C ~ +40 °C; +40 °C ~ +50 °C excl. battery
Storage temperature	-20 °C ~ +60 °C
Humidity	+10 °C ~ +30 °C: 95% RH non-condensing +30 °C ~ +40 °C: 75% RH non-condensing +40 °C ~ +50 °C: 45% RH non-condensing
Maximum operating altitude	Up to 2,000 m (6666 ft) for CAT IV 600 V, CAT III 1000 V Up to 3,000 m (10,000 ft) for CAT III 600 V, CAT II 1000 V Maximum storage altitude 12 km (40,000 ft)
Electro-Magnetic-Compatibility (EMC)	EN 61326 (2005-12) for emission and immunity
Interfaces	mini-USB-B, Isolated USB port for PC connectivity SD card slot accessible behind instrument battery
Warranty	Three years (parts and labor) on main instrument, one year on accessories

*± 5 % if ? 1 % of nominal voltage ± 0.05 % of nominal voltage if < 1% of nominal voltage
** 50Hz/60Hz nominal frequency according to IEC 61000-4-30
*** 400Hz measurements are not supported for Flicker, Mains Signaling and Monitor Mode.
****for nominal voltage 50 V to 500 V

What's included with the Fluke 435-II

Fluke 435-II Series of Power Quality Analyzers

Webinar: Facilities Maintenance with Fluke

Proactive maintenance and energy savings strategies are essential for cost savings in facilities. <br/><br/>We’ve teamed up with Fluke to provide you with a thorough discussion on proactive maintenance strategies – approaches, tools, and the proper “health” measurements on critical assets. As managing energy costs are also critical, we will also explore how implementing an onsite compressed air and gas leak detection program, facilities can save tens of thousands of dollars annually and production equipment downtime. The latest test equipment advances have made it possible for users to perform leak inspections with little to no training in a fraction of the time versus conventional tools.<br/><br/>During this short webinar on Facilities Maintenance, we covered:<ul><li>Monitoring critical assets with fewer resources </li><li>Bridging the skills gap</li><li>Why are we replacing the same bearings and seals over and over?</li><li>What are the best tools to use?</li><li> How do we justify the cost of the tools and resources?</li><li>How do we start a Proactive Maintenance program?</li></ul>

Webinar: Introduction to Portable Precision Power Analyzers with Fluke

This wideband precision analyzer is accurate enough for the lab, yet it's built for the field. Offering you more freedom than ever before to make high accuracy power measurements wherever you need to. Whether in the lab or in the field. Designed for portability and eliminates the need to carry large, fragile, expensive analyzers into the field, allowing you to make measurements directly at the load in nearly any environment. By measuring directly at the load, you can discover how the equipment operates under real-world conditions, with real-world variables, not just at a test bench or in the lab.

Brochure How to Get Faster Three-Phase Power Measurements with Fluke Clamp Meters Application Note The cost of poor power quality

Accessories

Click on a category to view a selection of compatible accessories with the Fluke 435-II Series of Power Quality Analyzers.

Carrying Cases

Fluke TB25 Tool Bucket Organizer Bag, 5.2 gal TB25

Durable and rugged, this tool bucket organizer bag has a 5.2-gallon capacity that can be relied on to protect and safely carry a variety of test tools and accessories. With its waterproof hard bottom shell, this versatile organizer has a total of 28 pockets that can fit hand tools, DMMs, clamp meters, test probes, and more.

$111.99 USD

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Current Probes

Fluke i5sPQ3, 5A AC Current Clamps, 3-pack I5SPQ3

A pack of 3 pieces of the i5s current clamps, specially configured to provide low current accuracy while taking measurements on secondary current transformers.

$1,703.99 USD

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Fluke i200s AC Current Clamp I200S

A dual-range of 20 A and 200 A ac current clamp with voltage output via a safety insulated BNC connector. A dual banana to BNC adapter is supplied to allow the clamp to be connected to multimeters with banana inputs.

$338.99 USD

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Fluke i400S AC Current Clamp I400S

For use with digital multimeters, power quality analyzers, and portable oscilloscopes, this current clamp allows users to take accurate current measurements without breaking electric circuits. Additionally, it measures up to 400 A AC.

$386.99 USD

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Fluke i1000s AC Current Probe I1000S

Designed to expand oscilloscope applications in industrial and power environments. Ideal for measuring distorted current waveforms and harmonics.

$794.99 USD

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Fluke i2000 FLEX Flexible AC Current Clamp I2000-FLEX

Utilizing the Rogowski principle, the clamp can be used to measure currents up to 2000 A when used in conjunction with multimeters, recorders, or data loggers. The flexible and lightweight measuring head allows quick and easy installation in hard to reach areas.

$593.99 USD

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Fluke i3000s AC Current Clamp I3000S

3000A AC current clamp with BNC terminated lead

$814.99 USD

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Fluke i3000s Flex-24 Flexible AC Current Probe, 24 inch length I3000S-FLEX-24

Flexible 24" 3000A AC current probe with BNC terminated lead.

$814.99 USD

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Fluke i6000s Flex-24 AC Current Probe I6000S-FLEX-24

Flexible 24" 6000A AC current probe with BNC terminated lead.

$1,058.99 USD

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Fluke i6000s Flex-36 AC Current Probe I6000S-FLEX-36

Flexible 36" 6000A AC current probe with BNC terminated lead.

$1,164.99 USD

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Fluke i30s AC/DC Current Clamp I30S

30A AC/DC current clamp with BNC terminated lead.

$813.99 USD

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Fluke 80I-110s AC/DC Current Clamp 80I-110s

The Fluke 80i-110s is optimized for accurate reproduction of currents at line frequency up to the 50th harmonic waveform.

$1,129.99 USD

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Test Leads & Probes

Fluke TLS430 - Test Leads and Alligator Clips (4 black, 1 green) TLS430

$172.99 USD

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Fluke AC285 SureGrip Alligator Clips AC285

Designed to improve steadiness in slippery hands, and is for use with TL222 and TL224 test leads. Rubber over-molded surfaces and finger-hugging curves give a comfortable, reliable grip so you can focus on making an accurate measurement.

$44.99 USD

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Power Supplies

Fluke BP290 Li-Ion Battery Pack BP290

For Fluke 43X power quality analyzers and 190-series ScopeMeters.

$331.99 USD

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Fluke BP291 Double Capacity Li-Ion Battery Pack BP291

For Fluke 43X power quality analyzers and 190-series ScopeMeters.

$463.99 USD

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Fluke EBC290 External Battery Charger EBC290

External battery charger for Li-ion batteries for 190B and 120B Series ScopeMeters and power quality analyzers.

$174.99 USD

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Ask a question about Fluke 435-II Series of Power Quality Analyzers

Customer Reviews for the Fluke 435-II

Description ➕➖

Fluke 435-II Series Offers

Features

These power quality and energy analyzers help locate and predict, prevent and troubleshoot power quality problems in three-phase and single-phase power distribution systems
Energy Loss Calculator: classic active and reactive power measurements, unbalance and harmonic power, are quantified to pinpoint true system energy losses in dollars
Power Inverter Efficiency: Simultaneously measure AC output power and DC input power for power electronics systems using optional DC clamp
Troubleshoot Real-time: Analyze trends using cursors and zoom tools
Measure all Three Phases and Neutral: With included flexible current probes (4) with enhanced thin flex designed to fit into the tightest places
Automatic Trending: Every measurement is always automatically recorded, without any set-up
System Monitor: Ten power quality parameters on one screen according to EN61060 power quality standard
Logger Function: Configure for any test condition with memory for up to 600 parameters at user defined intervals
View Graphs and Generate Reports: With included analysis software
Battery Life: Seven hours of operating time per charge on Li-ion battery pack
Automatic Transient Mode: Capture 200kHz waveform data on all phases simultaneously up to 6kV
Fully Class A Compliant: Conduct tests according to stringent international IEC 61000-4-30 Class A standard
Mains Signalling: Measure interference from ripple control signals at specific frequencies

Voltage Measurements

Measuring Ranges: Vrms (AC+DC): 1 to 1000V; Vpk: 1 to 1400Vpk; Volt CF: 1.0 > 2.8
Resolution: Vrms (AC+DC): 0.01V; Vpk: 1V; Voltage Crest Factor: 0.01
Accuracy: Vrms (AC+DC): ± 0.5% of nominal range; Vpk: ± 0.1% of nominal range; Volt CF: ± 5%;M

Amp Measurements

Measuring Ranges: Amps (AC+DC): 5 to 6000A; Apk: 8400Apk; Amp Crest Factor: 1 to 10; Amps½: 5 to 6000A; Afund: 5 to 6000A
Resolution: Amps (AC+DC): 1A; Apk: 1Arms; Amp Crest Factor: 0.01; Amps½: 1A; Afund: 1A
Accuracy: Amps (AC+DC): ± 0.5% ± counts; Apk: ± 5%; Amp Crest Factor: ± 5%; Amps½: ± 1% ± 10 counts; Afund: ± 0.5% ± counts

Harmonics Measurements

Voltage Harmonic Ranges: %of: 0.0 to 100%; %or: 0.0 to 100%; Absolute: 0.0 to 1000V; THD: 0.0 to 100%
Volt Resolution: %of: 0.1%; %or: 0.1%; Absolute: 0.1V; THD: 0.1%
Volt Accuracy: %of: ± 0.1% ± n x 0.1%; %or: ± 0.1% ± n x 0.4%; Absolute: ± 5%; THD: ± 2.5%
Amp Harmonic Ranges: %of: 0.0 to 100%; %or: 0.0 to 100%; Absolute: 0.0 to 600A; THD: 0.0 to 100%
Amp Resolution: %of: 0.1%; %or: 0.1%; Absolute: 0.1A; THD: 0.1%
Amp Accuracy: %of: ± 0.1% ± n x 0.1%; %or: ± 0.1% ± n x 0.4%; Absolute: ± 5% ± 5 counts; THD: ± 2.5%

Applications

Frontline Troubleshooting – Quickly diagnose problems on-screen to get your operation back online
Long-Term Analysis – Uncover hard-to-find or intermittent issues
Load Studies – Verify the available electrical system capacity before adding loads
PowerWave Data Capture – Capture every waveform for up to 5 minutes along with fast RMS values so you can determine how the voltage, current and frequency values are interacting
Power Inverter Efficiency – Measure the input and output power simultaneously to discover whether the inverter is optimized for its application
Energy Monetization – Calculate the fiscal cost of energy waste due to poor power quality
Energy Assessment –Quantify the before and after installation improvements in energy consumption to justify energy saving devices
Predictive Maintenance – Periodic benchmarking of the power system can help detect and prevent power quality issues before they cause downtime

How to Get Faster Three-Phase Power Measurements with Fluke Clamp Meters

In this application note, we walk you through the old versus the new way of doing phase-to-phase measurements along with step-by-step instructions on how to make these measurements.

Read the Application Note

Specifications ➕➖

Fluke 435-II Specifications

	Model	Measurement range	Resolution	Accuracy
Volt
Vrms (ac+dc)	435-II	1 V to 1000 V phase to neutral	0.01 V	± 0.1% of nominal voltage****
Vpk		1 Vpk to 1400 Vpk	1 V	5% of nominal voltage
Voltage Crest Factor (CF)		1.0 > 2.8	0.01	± 5 %
Vrms½	435-II		0.1 V	± 0.2% of nominal voltage
Vfund	435-II		0.1 V	± 0.1% of nominal voltage
Amps (accuracy excluding clamp accuracy)
Amps (ac +dc)	i430-Flex 1x	5 A to 6000 A	1 A	± 0.5% ± 5 counts
	i430-Flex 10x	0.5 A to 600 A	0.1 A	± 0.5% ± 5 counts
	1mV/A 1x	5 A to 2000 A	1A	± 0.5% ± 5 counts
	1mV/A 10x	0.5 A A to 200 A (ac only)	0.1 A	± 0.5% ± 5 counts
Apk	i430-Flex	8400 Apk	1 Arms	± 5 %
	1mV/A	5500 Apk	1 Arms	± 5 %
A Crest Factor (CF)		1 to 10	0.01	± 5 %
Amps½	i430-Flex 1x	5 A to 6000 A	1 A	± 1% ± 10 counts
	i430-Flex 10x	0.5 A to 600 A	0.1 A	± 1% ± 10 counts
	1mV/A 1x	5 A to 2000 A	1A	± 1% ± 10 counts
	1mV/A 10x	0.5 A A to 200 A (ac only)	0.1 A	± 1% ± 10 counts
Afund	i430-Flex 1x	5 A to 6000 A	1 A	± 0.5% ± 5 counts
	i430-Flex 10x	0.5 A to 600 A	0.1 A	± 0.5% ± 5 counts
	1mV/A 1x	5 A to 2000 A	1A	± 0.5% ± 5 counts
	1mV/A 10x	0.5 A A to 200 A (ac only)	0.1 A	± 0.5% ± 5 counts
Hz
Hz	Fluke 435 @ 50 Hz nominal	42.500 Hz to 57.500 Hz	0.001 Hz	± 0.01 Hz
Fluke 435 @ 60 Hz nominal	51.000 Hz to 69.000 Hz	0.001 Hz	± 0.01 Hz
Power
Watts (VA, var)	i430-Flex	max 6000 MW	0.1 W to 1 MW	± 1% ± 10 counts
	1 mV/A	max 2000 MW	0.1 W to 1 MW	± 1% ± 10 counts
Power factor (Cos j/DPF)		0 to 1	0.001	± 0.1% @ nominal load conditions
Energy
	kWh (kVAh, kvarh)	i430-Flex 10x	Depends on clamp scaling and V nominal	± 1% ± 10 counts
	Energy loss	i430-Flex 10x	Depends on clamp scaling and V nominal	± 1% ± 10 counts Excluding line resistance accuracy
Harmonics
Harmonic order (n)			DC, 1 to 50 Grouping: Harmonic groups according to IEC 61000-4-7
Inter-harmonic order (n)			OFF, 1 to 50 Grouping: Harmonic and Interharmonic subgroups according to IEC 61000-4-7
Volts	%f	0.0 % to 100 %	0.1 %	± 0.1% ± n x 0.1 %
	%r	0.0 % to 100 %	0.1 %	± 0.1% ± n x 0.4 %
	Absolute	0.0 to 1000 V	0.1 V	± 5% *
	THD	0.0 % to 100 %	0.1 %	± 2.5 %
Amps	%f	0.0 % to 100 %	0.1 %	± 0.1% ± n x 0.1%
	%r	0.0 % to 100 %	0.1 %	± 0.1% ± n x 0.4 %
	Absolute	0.0 to 600 A	0.1 A	± 5% ± 5 counts
	THD	0.0 % to 100 %	0.1 %	± 2.5 %
Watts	%f or %r	0.0 % to 100 %	0.1 %	± n x 2%
	Absolute	Depends on clamp scaling and V nominal	-	± 5% ± n x 2 % ± 10 counts
	THD	0.0 % to 100 %	0.1 %	± 5 %
Phase Angle		-360° to +0°	1°	± n x 1°
Flicker
Plt, Pst, Pst(1min) Pinst		0.00 to 20.00	0.01	± 5 %
Unbalance
Volts	%	0.0 % to 20.0 %	0.1 %	± 0.1 %
Amps	%	0.0 % to 20.0 %	0.1%	± 1 %
Mains signaling
Threshold levels		Threshold, limits and signaling duration is programable for two signaling frequencies	-	-
Signaling frequency		60 Hz to 3000 Hz	0.1 Hz
Relative V%		0 % to 100 %	0.10 %	± 0.4 %
Absolute V3s (3 second avg.)		0.0 V to 1000 V	0.1 V	± 5 % of nominal voltage

General specifications
Case	Design Rugged, shock proof with integrated protective holster Drip and dust proof IP51 according to IEC60529 when used in tilt stand position Shock and vibration Shock 30 g, vibration: 3 g sinusoid, random 0.03 g 2 /Hz according to MIL-PRF-28800F Class 2
Display	Brightness: 200 cd/m 2 typ. using power adapter, 90 cd/m 2 typical using battery power Size: 127 mm x 88 mm (153 mm/6.0 in diagonal) LCD Resolution: 320 x 240 pixels Contrast and brightness: user-adjustable, temperature compensated
Memory	8GB SD card (SDHC compliant, FAT32 formatted) standard, upto 32GB optionally Screen save and multiple data memories for storing data including recordings (dependent on memory size)
Real-time clock	Time and date stamp for Trend mode, Transient display, System Monitor and event capture

Environmental
Operating temperature	0 °C ~ +40 °C; +40 °C ~ +50 °C excl. battery
Storage temperature	-20 °C ~ +60 °C
Humidity	+10 °C ~ +30 °C: 95% RH non-condensing +30 °C ~ +40 °C: 75% RH non-condensing +40 °C ~ +50 °C: 45% RH non-condensing
Maximum operating altitude	Up to 2,000 m (6666 ft) for CAT IV 600 V, CAT III 1000 V Up to 3,000 m (10,000 ft) for CAT III 600 V, CAT II 1000 V Maximum storage altitude 12 km (40,000 ft)
Electro-Magnetic-Compatibility (EMC)	EN 61326 (2005-12) for emission and immunity
Interfaces	mini-USB-B, Isolated USB port for PC connectivity SD card slot accessible behind instrument battery
Warranty	Three years (parts and labor) on main instrument, one year on accessories

Included ➕➖

What's included with the Fluke 435-II

Fluke 435-II Series of Power Quality Analyzers

Videos ➕➖

Webinar: Facilities Maintenance with Fluke

Webinar: Introduction to Portable Precision Power Analyzers with Fluke

Resources ➕➖

Brochure How to Get Faster Three-Phase Power Measurements with Fluke Clamp Meters Application Note The cost of poor power quality

Accessories ➕➖

Accessories

Click on a category to view a selection of compatible accessories with the Fluke 435-II Series of Power Quality Analyzers.

Carrying Cases

Fluke TB25 Tool Bucket Organizer Bag, 5.2 gal TB25

$111.99 USD

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Current Probes

Fluke i5sPQ3, 5A AC Current Clamps, 3-pack I5SPQ3

A pack of 3 pieces of the i5s current clamps, specially configured to provide low current accuracy while taking measurements on secondary current transformers.