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N4L Ltd. (UK)
Precision Measurement
Instrumentation
UK Based, est. 1997
AC
POWER
SOURCES
POWER
ANALYZERS
FREQUENCY
RESPONSE
ANALYZERS
SELECTIVE
LEVEL
METERS
IMPEDANCE
ANALYZERS
Company Overview
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Relocated to new manufacturing facility April
2015
Location : Leicester, UK
3x Increased manufacturing capacity
Improvements to Calibration facility
Stable platform for N4A Power Source
production
Continuous Innovation
Slide 1 of 14
N4A Power Sources
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N4A03 + N4A06 Single Phase Output Solutions
up to 6kVA (20Arms)
N4A18, N4A30 + N4A67 3 Phase + Single Phase
output solutions up to 67kVA (75Arms)
X2 short term overload current capability
Equivalent to linear amplifiers low output
distortion
Arbitrary waveform generator
Wideband response above 1kHz, up to 15kHz
small signal
Sequencing
Harmonic generation
3 Phase Output
Programmable Power
Sources
N4A18, N4A30 and N4A67
Three Phase Output Power
Sources
 “Parallel Option” enables
Single Phase output from three
phase source
 Removable Inverter modules
for easy maintenance, no need to
return entire power source
 Feature same response and
distortion as N4A03/N4A06
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N4A Power Sources
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3kVA to 67kVA
2x Output Current for 3 seconds (N4A67
x1.33)
3 Phase sources capable of single phase
parallel output
Arbitrary waveform generation, including
harmonic generation,
phase angle, frequency,
N4A Power Source Output Power
sequencing, amplitude modulation and much
Maximum Continuous Phase
Model
Output Power
more
Current (3 second inrush)
N4A03
3kVA
10Arms (20Arms)
N4A06
6kVA
20Arms (40Arms)
N4A18
18kVA
20Arms Per Phase (40Arms)
N4A30
30kVA
32Arms Per Phase (64Arms)
N4A67
67kVA
75Arms Per Phase (100Arms)
Slide 2 of 14
Amplifier Topology
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Unique switching output technology provides
typical output distortion (THD) of 0.1%
Ability to generate AC + DC
1kHz full signal bandwidth
Slide 3 of 14
User Interface
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Most parameters accessible from main screen
Use “Home” button to activate the onscreen ^
menu, then <>
Ability to change Voltage, Frequency,
adjustment parameters, output ON/OFF, sense,
waveform type and coupling from main screen
More complex parameters in separate menus
^
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THD of Sinusoidal
Output
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Typical <0.1% THD
Measurement of output utilising PPA5500
PPA5500 benefits from isolated input,
eliminating requirement for differential
probe + oscilloscope
230Vrms, 50Hz Sinusoidal
Output
Square Wave Generation
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Ability to generate high frequency square
waves due to bandwidth up to 15kHz.
50Hz Square wave,
excellent signal
integrity
500Hz square wave, good
signal integrity within
3V/us slew rate
limitation
Triangle Wave Generation
50Hz triangle wave,
excellent signal
integrity
500Hz triangle wave,
excellent
signal integrity
Harmonic Synthesis
All N4A units feature the ability to generate
harmonics up to 10kHz
 N4A units are calibrated up to 10kHz
 Future implementation of various IEC61000 standards
for EMC compliance
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Example: Fundamental 500Hz, 7th Harmonic Generation (3500Hz) @
Harmonic Synthesis
230Vrms, 500Hz Fundamental
20Vrms 7th Harmonic
(3.5kHz)
230Vrms, 50Hz Fundamental
20Vrms 7th Harmonic (350Hz)
Sequencing – Example
IEC61000-4-11 Application
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Utilisation of existing “Sequence” mode
Future upgrade -Full automation of IEC610004-11 tests
Future expansion to other IEC61000-4-x tests
Sequence mode allows the user to perform
dropouts, sags, surges etc.
IEC61000-4-11
In this example, the sequence function in the PPA is
programmed to produce compliant waveforms to IEC61000-4-11.
Example Class 1 230Vrms reference Voltage waveforms are
shown below
Class 2 – 0% during
0.5 cycle
Class 2 – 0% during 1
cycle
Class 2 – 70% during
25 cycles
EMC Compliance
IEC61000-3-2
 IEC61000-3-3
 IEC61000-3-11
 IEC61000-3-12
 IEC61000-4-11
 IEC61000-4-13
 IEC61000-4-29
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Power Analyzers
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Best Phase Accuracy in Market (0.003deg)
Best High Frequency response in Market
Most comprehensive calibration protocol in
Market
UKAS Calibrated upon supply (Only manufacturer
to provide ISO17025 as standard)
Only Power analyzer Manufacturer to be
accredited to ISO17025 for IEC61000-3-3 and
IEC61000-3-2
Unique “Planar” current shunt design
Real time “no gap” analysis
Continuous high sample rate, regardless of
fundamental frequency (2Ms/s – PPA5500)
Power Analyzer Models
Transformer Testing –
PPA5500-TE
PPA5500-TE : Transformer Edition
- 0.003deg Phase accuracy
- 0.05% Power accuracy at PF=0.01
- 0.02%rdg + 0.02%rng error
No load Tests
Full Load Tests
ADI40 – Temperature data collection
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Industrial Motor
Testing
High frequency performance of N4L Power analyzers are
market leading (<10% error @ 1MHz, typical market
performance of 40% error @ 1MHz.
“PWM Inverter Drive Mode” provides simple intuitive
configuration, parallel filtering frequency detection
algorithms, wideband power analysis, dynamic frequency
tracking.
Efficiency Measurements, PPA3500, PPA4500 and PPA5500
Up to 24 phase measurements (Via PPALoG with
4xPPA3560’s)
Inrush testing – 2MS/s (PPA5500) sample rate to capture
high frequency events
DFT based harmonic analysis, no spectral leakage, square
windowing
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Standby Power
Testing
CF20 Measurement capability, typical waveforms exhibit
CF=15
No gap analysis – No missing data, vital for accurate
measurements of asynchronous current signals
Excellent Dynamic Range
Single shunt low noise technology
N4L Measurement Technology
Traditional
Approach
N4L Approach
N4L Current Shunt Design
Field Cancellation
Calibration
ADI40 – Analogue Digital
Interface
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Multi-Channel DC output Analogue<>Digital Data Logger with Multiple
Analogue Output
ADI40
ADI40
Example Configuration
ADI40 - Specification
Frequency Response Analyzers
PSM1700/PSM1730
PSM3750
Up to 100V
10uHz to 35MHz
SMPS Development
Filter Design
Feedback Loop Analysis
Up to 500V
10uHz to 50MHz
High Voltage SMPS Development
Isolated Generator
Filter Design
Feedback Loop Analysis
PSMComm2 FRA/LCR Software
Impedance Analyzers
PSM3750+IAI Impedance Analyzer
Component Testing
Automated Test Systems
Material Analysis
Piezo Analysis
EIS (Electro Chemical Impedance Spectroscopy)
Cable Impedance Analysis
Fruit/Vegetable Quality Testing
Dielectric Analysis
10uHz ~ 35MHz
Piezo Analysis
PSM3750+IAI+PSMComm2
Piezo characterisations
and analysis
Equivalent Circuit
modelling
10Hz~50MHz
Nyquist representation
EIS and LCR Mode : Nyquist Presentation (Linear/Log
also available)
Electrochemical Impedance
Spectroscopy
Sweep Frequency Response
Analyzers (Power Transformer
Analysis)
SFRA45 Model
Compact Portable Instrument
Battery Powered
Bespoke Cable reel (3x18m BNC)
Bespoke Bushing Clamps
Earthing Braids
Travel Case
Long Battery Life
SFRAComm Software Package
Automated “GO-NOGO” analytics
Database function
SFRA45
SFRAComm
SLM3505 – Selective Level Meter
SLM3505 – Power Line
Carrier Communications
[PLCC]
Utilities
Power Industry
Government
+1500 Units Supplied Worldwide
dBm
dBu
dBv
dB
VSWR
Impedance
FRA (dB, phase)
Oscilloscope
3Hr Battery Life
Hand Held
Generator + Receiver in Single
Chassis
Selective Level Meter
Accessories
Custom Lead Set
Flight Case
Directional Coupler
BAL01 – Balanced Output
Accessory
Thank you
Any Questions?
High Precision Measurement Instrumentation