BESTplus / BESTemc
BESTplus / BESTemc
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Best
emc
conducted immunity
test system
The need to test
The need to test electronic equipment for
electromagnetic compatibility - in the development
lab and on the production floor - is now widely
recognized as essential for quality assurance. Not
only are the financial service and repair
implications of not doing so too great to risk, but
the manufacturer’s reputation is at stake.
By their very nature, electromagnetic interference
phenomena occur sporadically, making faults caused
by insufficient protection difficult to detect.
The European EMC Directive makes the
manufacturer directly responsible. Commercially
available equipment must not only generate no
electromagnetic interference itself, but must also be
largely immune to such influences. Through the
implementation of these laws, EMC testing has
assumed legal aspects pertaining to product liability.
Other
countries are
on the way to
introducing
similar
regulations.
The BEST family
With the right equipment, the EMC tests
most important for product quality can be
carried out in any electronics laboratory.
Self-certification - as required by the law - is
then little more than a matter of logging the
results.
Schaffner has created the BEST family of
instruments to meet this need, costeffectively. Compliance testing with BEST
not only ensures electromagnetic
compatibility to the required standards, but
also guarantees EMC product quality.
BEST is a range of compact bench
instruments that incorporates all six EMC
pulse test procedures in a single housing.
The instruments incorporate all you need to
test and certify your products, in your own
laboratory and with minimal effort.
Test parameters are user-adjustable within
wide limits and offer generous test margins,
so that BEST is also ideal for product
analysis, or for checking compliance with
in-house EMC quality standards.
• Future proof
BEST already meets foreseeable future standards.
Interfaces are designed for future expansion.
• Cost-effective
BEST is designed to suit the needs - and the budget -
of the smaller manufacturer. In larger laboratories,
it helps to relieve pressure on other
high-end installations.
• An all-in-one solution
BEST is an ideal compact, portable test rig for
on-site investigations.
BEST checks interference immunity by
injecting standard-calibrated burst pulses on to
power supply and data lines, and provides
functions to identify weak points.
BEST includes an ergonomically styled ÔpistolÕ
for the simulation of electrostatic discharges.
Like the other test pulses generated by BEST,
test parameters are set up and results are
automatically recorded on the bench-top unit.
BEST checks the equipment being tested with
these energy-rich pulses in a safe, controlled
procedure. Safety connectors and well-designed
interlock circuits protect the operator.
BEST needs no ancillary equipment to perform
these tests. Standard test conditions are
pre-programmed, and functional limits are
easily determined by simply entering particular
test values. For more demanding test scenarios,
an external variac can be used with BEST.
Burst
Burst, or fast transient, pulses are high frequency packets of
spikes that occur during switching operations on power lines
and which spread throughout the supply network. Modern
electronic devices running at ever faster speeds are
vulnerable, particularly if the PCB layout is poor. They tend to
react by functioning incorrectly and/or losing data.
ESD
Electrostatic discharges are familiar as, for example, a small
spark that occurs when a charged person touches a
conductive object. The effect is harmless to the human body,
but can be damaging to microprocessors and logic circuitry.
Surge
Surge pulses take the form of low frequency disturbances
which contain considerable energy. They occur in power
supply networks as a result of a lightning strike or when a
heavy load is switched off, for example. Input circuits and
power supplies for electronic instruments are particularly at
risk from being over-driven or over-loaded.
Transient
Transient power variations occur in the mains supply as,
voltage interruptions or dips, for example. In keeping with
the best engineering practice, and to conform with European
EMC regulations, items of equipment must behave
reasonably in the face of such disruptions.
Bestplus
BESTplus meets the test specifications of the
Generic Standard. The system is upgradeable to
meet the higher specification pulse voltage
functions of the Basic Standards, at any time.
Bestemc
BESTemc includes the full range of higher
specification pulse voltage functions according to
the Basic Standards.
Accessories and options
All the models in the BEST range come
complete with a comprehensive set of
accessories as standard, including everything
necessary to set up a standard test rig on
the laboratory bench, or in the field.
Powerful PC control software, also supplied
as standard, features an intuitive multi-lingual
Windows interface, test sequencing and
cataloging capabilities, and an automatic test
report generator.
If the instruments and systems to be
tested contain magnetically sensitive
components then their susceptibility to
disruption caused by mains frequency or
pulsed-magnetic fields must be checked.
Two standard magnetic field antennae each with a
corresponding constant current source suitable for
testing to the generic standards, are offered as
options for BEST. Antennae to other dimensions can
be supplied on request. All these options are
supplied complete with fully integrated firmware and
control software.
A complete test system
All the functions of the BEST system including real-time test functions and safety
features - are microprocessor controlled.
Self-test routines check that the generators
are operating properly, and that calibration
values are correct.
The BEST front panel gives a continuous
LC-display of the current parameter settings,
system status and test-in-progress status.
Language is user selectable.
Test parameters for the
Generic Standards are
pre-programmed, and
can be simply called up
at the touch of a button. Custom
test parameters can be keyed in,
and stored to be used again at
any time.
Tests can also be controlled via a PC, using
the standard multi-lingual software supplied,
to give access to a wide range of additional
test management functions. Standard test
parameters are pre-programmed, custom
test specifications can be created, and tests
can be combined into complete test
sequences, which can be saved and re-used
at any time. Test reports suitable for the
Technical File and / or quality assurance
purposes are generated automatically.
A new test concept
The BEST concept is designed to make inhouse testing - for product optimization,
quality assurance, and compliance testing and the process of CE certification, as simple
as possible. That is why every BEST test
system comes complete with a
comprehensive set of accessories, including
ground reference mat, capacitive coupling
clamp, insulating spacers, resistors, earth
cable and much more. You
can be sure you have all you
need to complete the test
process, without any of the
bother of sourcing
components separately.
Interfaces are incorporated so
that the system can be
expanded at a later date, for
three-phase testing, for
example. Combined threephase coupling networks for
burst and surge, and coupling devices for
data lines are available.
The BEST multi-lingual report generator
allows test reports to be printed in English,
French, German or Spanish.
In addition to the comprehensive hardware
and software manual, there is also an easyto-follow guide to EMC standards and
achieving CE certification.
A reliable test partner
Schaffner’s manufacturing operations are certified
to the ISO 9000 quality standard, with tight control
over all procedures from material procurement to
final test.
A world-renowned certificated calibration service,
and world-wide network of EMC test and
measurement laboratories demonstrate the
company’s technical competence in the field of test
and measurement. An consultancy service offering
free advice to customers on all aspects of EMC
standards and testing, including help with confirming
which standards apply to a particular product, is
available from your local Schaffner office, or via the
Schaffner web site at
www.schaffner.com
Generic standards:
EN 50082-1 Generic immunity standard -
part 1: residential,
commercial and light
industry
EN 50082-2 Generic immunity standard -
part 2: industrial
environment
Product standards:
EN 50090 Home and building
electronic systems (HBES)
EN 50130 Alarm systems including fire,
intruder and personal alarms
EN 55011 Industrial scientific and
medical (ISM) equipment
(CISPR 11)
EN 55103 Professional audio, video,
audio-visual and
entertainment lighting
control apparatus
EN 55104 Household appliances, tools
and similar apparatus
EN 60601 Medical electrical equipment
EN 60945 Maritime navigation and
radio communication
equipment and systems
EN 60947 Low voltage switchgear and
control gear
EN 61131 Programmable controllers
EN 61800 Adjustable speed electrical
power drive systems
TECHNICAL DATA
Burst Pulse form Pulse amplitude Pulse frequency Polarity Pulses/burst Burst period Coupling
BESTplus 5/50ns 200 - 2200V 1 - 100kHz pos/neg 1 - 75 100ms - 99s L➔Ref.GND
N➔Ref.GND
PE➔Ref.GND
L+N➔Ref.GND
Coupling clamp
BESTemc 200 - 4400V
EUT supply: 250V/16Aac, 65V/10Adc.
Surge Pulse form Pulse amplitude Impedance Polarity Pulse repetition Coupling
BESTplus 1.2/50µs 200 - 2200V 2/12W pos/neg 10s min. L➔N
(open-circuit) 600s max. L➔PE / N➔PE
8/20µs L+N➔PE
(short-circuit)
BESTemc 200 - 4400V
EUT supply: 250V/16Aac, 65V/10Adc.
ESD Discharge voltage Pulse rise-time Network Polarity Pulse repetition
BESTplus 8.8kV (air) 0.7 - 1ns 150pF/330W pos/neg Single pulse Pre-settable
6.6kV (contact) repetitive up counter
to 25Hz Remote triggering
BESTemc 16.5kV (air)
9kV (contact)
Power Mains drop-out Voltage dip Phase angle Power up current
quality
BESTplus 10ms - 5s 70%Vn for 10ms - 5s 0 - 359º 500A
BESTemc 40%Vn for 10ms - 5s
EUT supply: 250V/16Aac, 65V/10Adc. Interface for optional external variac.
Magnetic field coil options for:
BESTplus
BESTemc
Power line magnetic fields Pulsed magnetic fields Dimensions
INA 711 Field strength 0.1 to 4A/m Field strength: 100 to 1100A/m with BESTplus 1m x 1m, adjustable in all planes
Frequency 40 to 70Hz 100 to 2200A/m with BESTemc
INA 712 Field strength 0.1 to 40A/m Field strength: 100 to 1100A/m with BESTplus 1m x 1m, adjustable in all planes
Frequency 40 to 70Hz 100 to 2200 A/m with BESTemc
Three-phase extension for
BESTplus
BESTemc
CDN 135 Three phase coupling unit for burst and surge with automatic control from the BEST unit
Power rating: 3 x 440Vac, 50/60Hz, 25A continuous, 30A for 0.5 hour
Schaffner EMV AG
CH-4542 Luterbach Switzerland
Tel: +41 32 6816 626 Fax: +41 32 6816 641
www.schaffner.com
Schaffner Beijing Liaison Office
Room 911 Bright China Chang An Building
No. 7 Jianguomennei Dajie
Beijing 100005
China
Tel: [+86] 10 6510 1761
Fax: [+86] 10 6510 1763
Schaffner SA
43 rue Michel Carré
95103 Argenteuil
France
Tel: [+33] 1 34 34 30 60
Fax: [+33] 1 39 47 02 28
Schaffner EMV GmbH
Schoemperlenstrasse 12B
76185 Karlsruhe
Germany
Tel: [+49] 721 56910
Fax: [+49] 721 569110
Schaffner Limited
National Technological Park
Castletroy
Limerick
Ireland
Tel: [+353] 61 332233
Fax: [+353] 61 332584
Schaffner EMC KK
2-31-6 Kamiuma
Setagaya-Ku
Tokyo 154-0011
Japan
Tel: [+81] 3 3418 5822
Fax: [+81] 3 3418 3013
Schaffner EMC Pte Ltd
1200 Depot Road 06–01
Singapore 109675
Tel: [+65] 377 3283
Fax: [+65] 377 3281
Schaffner EMC AB
Turebergstorg 1,6
19186 Sollentuna
Sweden
Tel: [+46] 8 92 11 21
Fax: [+46] 8 92 96 90
Schaffner Altrac AG
Mühlehaldenstrasse 6
8953 Dietikon
Switzerland
Tel: [+41] 1 744 6111
Fax: [+41] 1 744 6161
Schaffner EMC Ltd
Ashville Way
Molly Millar’s Lane
Wokingham RG41 2PL
UK
Tel: [+44] 118 9770070
Fax: [+44] 118 9792969
Schaffner EMC Inc
9B Fadem Road
Springfield NJ 07081
USA
Tel: [+1] 973 379 7778
Fax: [+1] 973 379 1151
Ordering information
BESTplus - 1 Complete package with burst and surge generators up to 2.2kV, power transient
generator, ESD gun for 6.6 / 8.8kV, WINDOWS software, ground plane, data-line
coupling clamp, interface for external variac, test literature, instruction manual and
accessories
BESTplus - 2 As above but without ESD gun
BESTemc - 1 Complete package with burst and surge generators up to 4.4kV, power transient
generator, ESD gun for 9 / 16.5kV, WINDOWS software, ground plane, data-line
coupling clamp, interface for external variac, test literature, instruction manual and
accessories
BESTemc - 2 As above but without ESD gun
INA 711 Magnetic field coil option for power magnetic fields to 4A/m and pulsed magnetic
fields to 1100A/m with BESTplus or 2200A/m with BESTemc
INA 712 Magnetic field coil option for power magnetic fields to 40A/m and pulsed magnetic
fields to 1100 A/m with BESTplus or 2200A/m with BESTemc
INA 715 Upgrade option for BESTplus, burst and surge to 4.4kV, ESD to 9 / 16.5kV
CDN 135 Three-phase extension unit for burst and surge
690 - 499C Urs Uebelhart / February 1999
© 1998 Schaffner EMV. Specifications subject to change
without notice.
All trademarks recognised.
Certified
ISO 9001
supplier
Schaffner is an ISO-registered company.
Its products are designed and manufactured
under the strict quality requirements of
the ISO 9001 standard
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