Fluke N4K 3PP50

Norma 4000 3 Phase Precision Power Analyzer w/PP50 Modules

Order #: FLUKE-N4K 3PP50

Mfg #: 3108576

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Fluke N4K 3PP50

Norma 4000 3 Phase Precision Power Analyzer w/PP50 Modules

Order #: FLUKE-N4K 3PP50

Mfg #: 3108576



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This product is available for shipping to the United States, Canada, and Puerto Rico only.
This product is available for shipping to the United States, Canada, and Puerto Rico only.

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Product Highlights

  • Bandwidth: 10 MHz
  • Basic accuracy: 0.1% (0.05% rg + 0.05% rg)
  • Sampling rate: 1 MHz
  • Voltage input range: 0.3 to 1000V
  • Direct current input range: 10A
  • Number of phases: 3
  • 153 mm color display
  • Harmonic analysis
  • FFT analysis
  • Scope mode
  • Vector diagram display
  • Recorder function
  • Fluke NormaView PC software for setup, data download, analysis and report writing
  • 4 MB on-board memory for storage of measured values


  • Electric motors
  • Inverter drive systems
  • Lighting systems
  • Transformers
  • Automotive
  • Switching power supplies and UPS
  • Charge pumps/boost converters
  • Current transducers
  • tan d (dissipation factor) measurement
  • Calibration and test laboratories

Each Unit Includes

  • Power Supply Cable
  • Fluke NormaView PC Software
  • Test Certificate
  • Calibration Values
  • User Manual

The Fluke N4K3PP50 Norma 4000 Three-Phase Precision Power Analyzer with PP50 Power Phase Input Modules (x3) offers easy and straight-forward operation, which is ideal for field testing.

Measuring System

N4K 3PP50 accurately measures current and voltage and calculates active, reactive and apparent power; it calculates other derived values from these high-precision measurements.

Accuracy is not affected by either the waveform shape or frequency over a wide range. Phase shift accuracy is maintained due to the input channel design. Harmonics are calculated up to half of the sampling rate.

The DSO function represents measured input parameters as waveforms. Voltage and current can be measured directly via the instrument's integrated voltage dividers and shunts. It is also possible to connect external voltage dividers as well as shunts or current probes for specific applications. Options such as additional interfaces, analogue inputs and outputs are also available. The analyzer firmware can be updated via the standard RS232 interface.

High Precision Measurements

N4K 3PP50 is designed to measure signals in a wide frequency range, from DC to MHz. The input stages are DC coupled and designed to handle high rise time signals. A zero and offset calibration against a stable voltage reference runs automatically over short time periods to stabilize accuracy.

All voltage and current channels are separated by a unique technology of barriers for high channel isolation and common mode rejection. This makes this power analyzers suitable for special applications, such as switching waveforms present on variable frequency drives or high efficiency lighting loads.

Non Gapping

The exceptionally high processing power enables precise measurements without gapping, ensuring good results even with rapidly changing signals.

Longtime Accuracy

N4K 3PP50 maintains high performance and reliable accuracy within the industry's longest recommended recalibration interval of two years. This long interval reduces downtime and saves service costs.

Standard Configurations

There are four different measuring channels available for each N4K 3PP50. For the highest level of flexibility and simplicity, you can choose from a variety of standard configurations. This enables users to select the power analyzer best suited to their application's power measurement requirements. Each power phase module differs in basic accuracy, current measuring range, sampling frequency, and bandwidth.

The input modules can handle up to 10A or 20A directly or measure current via wideband precision shunts. The available range of shunts enables measurements up to 1500A and can be used in conjunction with all of the available input modules.

Powerful NormaView PC Software

The Fluke NormaView software improves operation efficiency of the analyzers by enabling instrument setup settings to be saved and stored along with the measurement data. Instrument setups can be used for particular measurement tasks. Settings can be easily uploaded to the instrument with just a few mouse clicks. The software also enables quick and easy data download, analysis and report writing.

Modular Power Phases

N4K 3PP50 can be equipped with up to three power phases. Users can select the type of power phase best suited for their application from a variety of optional power phases. Specifications vary depending on the model of the power phase.

Each modular plug-in power phase consists of a voltage and a current measurement channel. Each measuring channel is available for each basic unit. However, only one kind of channel can be used per unit.

Optional Process Interface

The optional process interface can be used with N4K 3PP50. It provides the simultaneous recording of torque (M), speed (N) and mechanical power (Pm), for up to four motors. Each of the eight inputs is switchable between analog (voltage) or digital (frequency) input. This interface provides synchronous capture at a sample rate of 34 kHz. The interface also provides four analog outputs, which are updated after every average interval. By inputting the additional analog and digital values it is possible to fully evaluate electrical and mechanical efficiency in real time.

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General Specifications
Number of Phases 1 to 3
Weight Approx. 5 kg (11 lb)
Size 150 x 237 x 315 mm
5.9 x 9.3 x 12.4 in
On-board Printer No
Display Color, 5.7 in / 144 mm - 320 x 240 pixel
User-selectable background lighting and contrast.
Bandwidth DC to 3 MHz or DC to 10 MHz depending on input module
Basic Accuracy 0.2%, 0.1% or 0.03% depending on input modules
Sampling Rate 0.33 MHz or 1 MHz depending on input modules
Voltage Input Range 0.3 V to 1000 V
Current Input Range (direct, not via shunt) 0.03 mA to 20 A depending on input module
Memory for Configurations 4 MB
Memory for Settings 0.5 MB
Fast Fourier Transformation (FFT) To the 40th harmonic
RS232/USB Interface Standard
PI1 Process interface (8 analog/impulse inputs and 4 analog outputs) Optional
IEEE 488.2/GPIB interface (1 MBit/s Ethernet / 10 MBit/s or 100 MBit/s) Optional
Fluke NormaView PC software (for data download, analysis and report writing) Standard
Basic Functions
Fast Fourier Transformation (FFT) Calculation of harmonics with graphical representation. Up to 3 bar graphs are displayed at the same time.
Measured values: U, I, P per phase
Order: 1st to 40th harmonics, maximum half sample frequency
Digital Oscilloscope (DSO) Simultaneous display of up to 3 measured values on sample level. Quick view of curve form and distortion.
Integration function (energy) Simultaneous display of up to 6 configurable numeric values. Start/Stop conditions and positive negative direction available.
Vector Display Vector display of HO1 up to 6 signals. For easy testing of the right connection of the instrument and quick overview of the phase angle of each signal.
Recorder Display of average values over time for trend determination.
RAM data memory Storing of sample and average values; setting of start and stop conditions.
From the RAM approximately 4 MB are available for the storage of measured values.
Configuration Set up the analyzer to measure and display data in the format required.
Ambient Conditions
Working Temperature Range 5°C to 35°C (41°F to 95°F)
Storage Temperature Range -20°C to 50°C (-4°F to 122°F)
Housing Material Fluke Norma Power Analyzers are extremely compact and equipped with a solid metal case to meet stringent EMC requirements.
Climatic Class KYG DIN 40040, max. 85% relative humidity, non-condensing.
Power supply 85 V AC to 264 V AC, 50 Hz to 60 Hz, DC 100 to 260 V, ca. 40 VA European plug with switch. Binding post for current available on some models.
Measuring Inputs Safety sockets 4 mm, 2 for each input. External shunt connection over BNC socket.
Operation Membrane keyboard with cursor – function keys and direct functions.
Connections Rear panel of the 3-phase Analyzer
Measured Values
  Non-gapping calculation of averaged values for each phase. In three phase system additionally calculation of total power and averaging of V and I of the three phases. The fundamental H01 will be calculated in synchronous mode also for these values.
  • Urms effective value, Urm rectified mean, Um mean value
  • Up-, Up+, Upp peak values
  • Ucf crest factor Ucf, Uff form factor
  • Ufc fundamental content
  • Uthd distortion factor DIN, IEC
  • Irms effective value, Irm rectified mean, Im mean value
  • Ip-, Ip+, Ipp peak values
  • Icf crest factor Icf, Iff form factor
  • Ifc fundamental content
  • Ithd distortion factor DIN, IEC
  • P active power [W]
  • Q reactive power [Var]
  • S apparent power [VA]
  • ë, cos. phase angular
  • Integral function for active power P, reactive power Q, apparent power S, voltage (Um) and current (Im),
  • Number of digits 4 or 5 dependent on measured value.
Frequency and Synchronization
Range DC and 0.2 Hz to sample rate
Accuracy ±0.01% of measured value (reading)
  • Channels which can be selected: all U/I or external input.
  • One of three low pass filter with different frequencies can be switched into the signal.
  • The frequency is always visible on the top of the screen.
  • The BNC synchronization socket on backside of the instrument can be used either as input or output.
  • The input signals can be measured up to the sample rate of the power phase. The maximum level must not be higher then 50 V.
  • The output signal is a pulsed 5Volts TTL signal (frequency depends on the measured synch frequency).
Configuration Memory
  Up to 15 user configurations can be saved into a permanent memory and reloaded later on. Changes that were not saved are lost after switching off the instrument.
  RS232 interface for upload of firmware and data exchange with the PC. A printer can be connected over an external converter.
Options IEEE 488.2 / 1 MBit/s
Ethernet / 10 MBit/s or 100 Mbit/s
Standards and Safety
Electrical Safety EN 61010-1 / 2nd Edition 1000 V CAT II (600V CAT III)
Degree of pollution 2, safety Class I
EN 61558 for transformer
EN 61010-2-031/032 for accessories
Maximum inputs For voltage inputs Measurement range 1000 Veff, 2 kVpeak
For current inputs Measurement range 10 Aeff, 20 Apeak
Test voltage Net input case (protective conductor): 1.5 KV AC
Net connection Measurement input: 5.4 kV AC
Measurement inputs Case: 3.3 kV AC
Measurement input input: 5.4 kV
Electromagnetic susceptibility Emission IEC 61326-1, EN 50081-1, EN 55011 Class B
Immunity IEC 61326-1 / Annex A (industrial sector), EN 50082-1