Fluke 434-II and 435-II Power Quality and Energy Analyzers
Key features
Analyze power quality issues, calculate the costs of wasted energy and prevent downtime with the Fluke 434-II Energy Analyzer and Fluke 435-II Power Quality and Energy Analyzer.
- Advanced power quality health—At-a-glance power quality health data in real time so you can make better maintenance decisions
- Energy loss calculator—Discover the costs of energy loss specifically caused by poor power quality
- Highest safety rating in industry—CAT III 1000 V / CAT IV 600 V
Product overview: Fluke 434-II and 435-II Power Quality and Energy Analyzers
The Fluke 434-II Energy Analyzer and 435-II Power Quality and Energy Analyzer are designed to help you minimize downtime, quickly troubleshoot power quality issues and easily discover the costs of wasted energy. Downtime is expensive and getting the data you need to solve to critical power quality problems quickly is key. The 434-II and 435-II Analyzer’s measurement process and data output have been optimized to help you access the most critical information easily.
Multiple parameters are measured simultaneously and displayed in formats that quickly describe overall power quality health. The detailed information helps you make better maintenance decisions—whether you’re trying to reduce energy waste, find the source of power quality issues or see how motor startups are affecting your electrical system. Data can be accessed as simple digital values, trend graphs (for fast insight into changes over time), waveforms, or phasor diagrams. The data can also be analyzed and organized into tabular formats. Detailed event data allows you to see the magnitude, duration and time stamping of anomalies enabling you to rapidly correlate the problems you are experiencing in your facility.
Energy Loss Calculator—Calculate money lost to energy waste in terms of real dollars.
It’s a simple fact, poor power quality can have a big impact on the bottom line. The Fluke 434-II Energy Analyzer and Fluke 435-II Power Quality and Energy Analyzer enable you to identify issues and measure energy loss giving you specific insight into the amount of loss in dollars. The Energy Loss Calculator helps you better understand your energy consumption by creating associations between things like effective power and poor power quality characteristics such as reactive power, unbalance, distortion, or neutral current. These power quality and energy analyzers also offer users the flexibility to input cable length and diameter to calculate loss due to conductor sizing (or use AUTO mode if cable specifications are unknown) and enter up to four unique time-dependent daily rates (kWh) for more accurate calculations. Armed with this critical data, users can easily justify the investment necessary to take countermeasures.
Advanced Power Quality Health—At-a-glance power quality health data in real-time so you have the data you need, when you need it
The Fluke 434-II Energy Analyzer and 435-II Power Quality and Energy Analyzer utilize an integrated Power Quality Health summary that gives you an at-a-glance view of a complete range of power quality issues in real time. With a simple graphical presentation, complete with tolerance limits, you can quickly discover which power quality problems may be present on your electrical system. If you don’t know where to start or what problems might exist, the advanced Power Quality Health summary simplifies the task and serves as a comprehensive starting point for further troubleshooting.
Power Inverter Efficiency
Power inverters take dc current and transform it into ac current, or vice versa. But, what percentage of that power going into the inverter comes out as usable current? The Fluke 434-II and 435-II Analyzers have an integrated power inverter efficiency mode that allows users to better understand power inverter performance. Nothing is ever 100 % efficient, and a power inverter’s efficiency will vary depending on how much power is being used at the time (with the efficiency generally being greater when more power is being used). Inverters can also lose performance over time and need to be checked. By comparing the input power with the output power, you can determine the system efficiency. With the Power Inverter Efficiency feature you can discover just how good your inverter is at converting your dc power to ac (or vice versa).
AutoTrend—Quickly see the trend
With a unique AutoTrend feature you can get fast insight into power quality changes over time. Every displayed reading is automatically and continuously recorded without having to set up threshold levels or having to manually start the process so you can quickly view trends in voltage, current, frequency, power, harmonics or flicker on all three phases plus neutral.
Advanced Power Quality Functions, Unprecedented Energy Analysis Capabilities
Power quality issues can affect the operation of critical loads and have a negative impact on your bottom line. Think of the Fluke 435-II Power Quality and Energy Analyzer as your insurance policy. Calculate the cost of wasted energy due to poor power quality and troubleshoot the source of power quality or motor performance issues all with a single test tool designed to give you the data you need to quickly get to the root of the problem.
Wrapped in a lightweight, rugged package, the Fluke 434-II Energy Analyzer and 435-II Power Quality and Energy Analyzer are the ideal portable power quality instruments.
- Quickly see how much money you’re losing due to energy waste in terms of real dollars
- Get at-a-glance power quality health data in real-time so you can make better maintenance decisions
- Measure all three phases and neutral with the included flexible current probes
- Easily see how motor startups are affecting electrical system performance
- Highest safety rating in the industry: 600 V CAT IV/1000 V CAT III rated for use at the service entrance
- Fluke Connect® compatible* – view data locally on the instrument, via Fluke Connect mobile app and PowerLog 430-II desktop software
The Fluke 430-II Series Power Quality Analyzers
The Fluke 434-II Energy Analyzer helps you understand your overall energy consumption and quantify how much energy loss is costing your facility. The Fluke 435-II Power Quality and Energy Analyzer includes the same great features of the 434-II while adding advanced power quality functionality for more in depth troubleshooting. If you need the same advanced functionality as the 435-II a higher frequency, the Fluke 437-II is the must-have power quality analyzer for 400 Hz power systems. Lastly, the Fluke 438-II Power Quality and Motor Analyzer includes all the power quality and energy analysis capabilities that the Fluke 435-II has as well as the ability to measure mechanical motor parameters such as motor speed, torque and mechanical power without the need of mechanical sensors.
| Features | Fluke 434-II | Fluke 435-II | Fluke 437-II | Fluke 438-II |
| Power Measurements | • | • | • | • |
| Power Quality Measurements | • | • | • | • |
| IEC61000-4-30 Compliance | Class S | Class A | Class A | Class A |
| Power, Energy & Loss Calculator | • | • | • | • |
| Monitor & Trending | • | • | • | • |
| Inrush, Inverter Efficiency | • | • | • | • |
| Advanced Analysis; Event Waveforms, Flicker, Transients, Mains Signaling, and Power Wave | • | • | • | |
| Shipboard Power & 400Hz | • | |||
| Motor Electrical & Mechanical Analysis | (Optional) | (Optional) | (Optional) | • |
| SD Card | • | • | • | • |
Specifications: Fluke 434-II and 435-II Power Quality and Energy Analyzers
| Volt | ||||
| Model | Measurement Range | Resolution | Accuracy | |
| Vrms (AC + DC) | 434-II | 1 V to 1000 V phase to neutral | 0.1 V | ±0.1% of nominal voltage1 |
| 435-II | 1 V to 1000 V phase to neutral | 0.01 V | ±0.1% of nominal voltage1 | |
| Vpk | 1 Vpk to 1400 Vpk | 1 V | 5% of nominal voltage | |
| Voltage Crest Factor (CF) | 1.0 > 2.8 | 0.01 | ±5% | |
| Vrms½ | 434-II | 1 V to 1000 V phase to neutral | 0.1 V | ± 1 % of nominal voltage |
| 434-II and 435-II | 0.1 V | ±0.2% of nominal voltage | ||
| Vfund | 434-II | 1 V to 1000 V phase to neutral | 0.1 V | ± 0.5 % of nominal voltage |
| 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 | 1 A | ±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 | 1 A | ±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 434 @ 50 Hz Nominal | 42.50 Hz to 57.50 Hz | 0.01 Hz | ±0.01 Hz |
| Fluke 434 @ 60 Hz Nominal | 51.00 Hz to 69.00 Hz | 0.01 Hz | ±0.01 Hz | |
| Fluke 435 @ 50 Hz Nominal | 42.500 Hz to 57.500 Hz | 0.001 Hz | ±0.01 Hz | |
| Fluke 435 @ 60 Hz Nominal | 51.00 Hz to 69.00 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%1 | |
| 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 (1 min) 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 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), up to 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 | |||
| View full family specifications » | ||||
| 1. ±5% if ≥ 1% of nominal voltage ±0.05% of nominal voltage if < 1% of nominal voltage 2. 50Hz/60Hz nominal frequency according to IEC 61000-4-30 3. 400Hz measurements are not supported for Flicker, Mains Signaling and Monitor Mode 4. For nominal voltage 50 V to 500 V | ||||
Models: Fluke 434-II and 435-II Power Quality and Energy Analyzers
UPC#: 0 95969 61556 3
Includes:
- BC430 Power Adapter
- International Plug Adapter Set
- BP290 (Single Capacity Li-ion Battery) 28 Wh (8 hours or more)
- TLS430 Test Lead and Alligator Clip Set
- WC100 Color Coding Clips and Regional Decals
- i430-Flexi-TF-II, 24 inch (61 cm) Length, 4 Flexible Current Probes
- 8GB SD card
- PowerLog on CD (includes operator manuals in PDF format)
- USB Cable A - Mini B
- Soft Carrying Bag
UPC#: 0 95969 61553 2
Includes:
- BC430 Power Adapter
- International plug adapter set
- BP290 (Single capacity Li-ion battery) 28 Wh (8 hours or more)
- TLS430 Test lead and Alligator clip set
- WC100 color coding clips and regional decals
- i430flex-TF, 24 inch (61 cm) length, 4 flexible current probes
- 8GB SD card
- PowerLog on CD (includes operator manuals in PDF format)
- USB cable A - Mini B
- C1740 Soft Case
UPC#: 0 95969 61558 7
Includes:
- BC430 Power Adapter
- International Plug Adapter Set
- BP290 (Single Capacity Li-ion Battery) 28 Wh (8 hours or more)
- TLS430 Test Lead and Alligator Clip Set
- WC100 Color Coding Clips and Regional Decals
- 8GB SD card
- PowerLog on CD (includes operator manuals in PDF format)
- USB Cable A - Mini B
UPC#: 0 95969 61555 6
Includes:
- BC430 Power Adapter
- International Plug Adapter Set
- BP290 (Single Capacity Li-ion Battery) 28 Wh (8 hours or more)
- TLS430 Test Lead and Alligator Clip Set
- WC100 Color Coding Clips and Regional Decals
- 8GB SD card
- PowerLog on CD (includes operator manuals in PDF format)
- USB Cable A - Mini B
- C1740 Soft Case
UPC#: 0 95969 82046 2
Includes:
- Firmware upgrade package to add motor analysis capabilities to existing Fluke 434, 435 and 437 Series II Power Quality Analyzers