PARTIAL DISCHARGE
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TEST SOLUTIONS
2
Content
CONTENT
The best team in the business
3
Product line overview
4
Partial discharge measurement
6
Applications
7
DDX9101 Digital PD detector
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DDX9121b Multichannel Digital PD Detector
10
DDX7000 Advanced digital PD detector
10
DDX8003 Advance digital PD detector with pulse discrimination
14
Partial discharge measuring impedances
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Partial discharge Calibrators
19
Coupling capacitors
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Technical specifications
21
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The best team in the business
THE BEST TEAM IN THE BUSINESS
Since our merger in 1999, Hipotronics-Robinson
and Haefely-Tettex melded the best of both
worlds in the release of the DDXTM Series of
Partial Discharge Detectors, powerfull yet easy
to use units. Our partial discharge product offering includes all one needs for factory testing. When it comes to partial discharge testing,
you can’t beat the Haefely Hipotronics instruments team.
HAEFELY AG IS
FOUNDED IN
BASEL IN 1904
TETTEX COMPANY IS
FOUNDED IN
ZURICH IN 1945
1968
1960
1970
1976
1970
1978
1982
1994
1980
HAEFELY ACQUIRES
TETTEX INSTRUMENTS
IN 1994
HIPOTRONICS COMPANY
IS FOUNDED IN
BREWSTER, NY IN 1967
HIPOTRONICS
ACQUIRES ROBINSON
IN 1995
ROBINSON & PARTNER LTD.
FOUNDED IN ENGLAND
IN 1965
1994
1995
1990
1999
2000
2000
2000
2001
2002
2004
2010
2013
3
4
Product line overview
Product line overview
Partial discharge AC
pC
t
Partial discharge DC
µV
f
Radio Interference Voltage (RIV)
V
t
Cable fault location
3
DD
X8
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0
00
X7
DD
121
B
DD
X9
DD
X9
10 1
PRODUCT LINE OVERVIEW
5
6
Applications
PARTIAL DISCHARGE MEASUREMENT
Partial discharge testing is a standard 1
2
3
method of determining the quality of
electrical insulation. Partial discharges
can be caused by poor design, manufacturing faults, mechanical damage, aging,
etc. The ability to measure low levels of
partial discharges is referred as sensitiv7
ity. As partial discharges happen inside
the test object, only indirect effects can
be quantified. Back in 60’s the general
layout (see beside diagram) and technical specifications of the measuring device 1. Regulating transformer
were defined. The IEC60270, succesor to 2. Line filter
the earlier standards, specifies the to- 3. High voltage transformer
day’s requirements to perform a reliable 4. Coupling capacitor
partial discharge test. Special care has
to be taken in fulfilling all requirements,
because wrong results can be caused by
non conforming test layout or configurations.
4
5
6
5. Test object
6. Partial discharge detector
7. Control unit
PARTIAL DISCHARGES AND NOISE
A partial discharge is a small current
pulse which circulates inside the circuit
created by the test object, the coupling
capacitor and the measuring impedance.
Electrical interferences, if large enough,
could affect the sensitivity of the measuring system. Although several techniques
exist for noise reduction, the optimization
of the test circuit is the most efficient procedure to increase the sensitivity.
Radiated Noise picked by
the measurement loop.
Reducing measuring loop
inductance will help
Our long experience of more than 50 years
performing partial discharge test will provide you with the best solution to fulfill
your particular needs. Under special circunstances, when the test laboratory optimization is not posible or noises are too
high, our DDX8003, whith its unique noise
discrimination posibilities will surely help .
Induced noise, coming
through the mains, bandrejecting filters could help.
Ground Noise, coming from ground circulating currents, independent earthing could help
Applications
MEASURING BAND
IEC60270 RECOMMENDED VALUES
The frequency measuring band affects
drastically the partial discharge test. A
measurement band which is within the
IEC or ANSI requirements has to be selected to get reliable measuring results.
All our detectors measure within the IEC/
ANSI defined frequency band.
30 kHz
< f1
f2
100 kHz <Δf
< 100 kHz
< 500 kHz
< 400 kHz
f1 = Lower limit frequency
f2 = Upper limit frequency
Δf = Measurement band
f2
f1
APPLICATIONS
Power transformers
Distribution transformers
Cables
Rotating machines
Instrument transformers
R&D
7
8
DDX 9101
DDX 9101
DIGITAL PD DETECTOR
The DDX 9101 is the ideal solution for
pass/fail partial discharge testing; incorporating all the basic functions of an
analog detector and meeting all IEC and
IEEE/ANSI standards for PD testing. This
simple-to-use detector is controlled via 8
control buttons on the front panel. With
the data acquisition/remote control software you can record PD pulses and create
test reports easily.
Applications:







Distribution Transformers
Current and Potential Transformers
Rotating Machines
Power Capacitors
Switchgears
Surge Arrestors
Research & Development
Partial discharge AC
Range ofDDX
Services
9101
ALL IN ONE
TWO GRAPHICAL MODES
A 3U height rack unit contains all you need
to perform a PD test. The digitalizer, the
computer, the screen and the control keys
are all included. No additional hardware
needed beyond the coupling capacitor.
Two graphical modes are available to view
the test results: meter mode and scope
mode. The threshold shown graphically
(in color) together with different meter
modes makes monitoring of the test results simple.
SIMPLE TO USE
DATA ACQUISITION & ANALYSIS
Calibrate the measurement setup, set the
maximum acceptable PD level and you
are ready to start the test. Once the voltage is applied, an indicator on the screen
tells you if the test object passed or failed
the test.
The optional advanced data acquisition
and analysis software allows a wide variety of possibilities like recording PD pulses occurring during each and every test
voltage cycle and analyzing them both in
the time and phase domain.
DDX9106a 3 CHANNELS MULTIPLEXER
An optional 3 to 1 manual multiplexer
in a separate housing stackable with
DDX 9101 allows manual switching, for
example while testing distributon transformers.
9
10
DDX 9121b
DDX 9121b
MULTICHANNEL DIGITAL PD DETECTOR
The DDX 9121b is the latest in the DDX
family for partial discharge & radio interference voltage testing. With the DDX
9121b you can setup, control, test, monitor and generate test reports from a single
computer.
Its modular design makes the DDX9121b
flexible for any application. From single
measuring input to simultaneous 9 measuring inputs. From traditional partial discharge according to IEC60270 to RIV measurement or PD under DC. From pass/fail
test to advance phase resolution time
analysis. The DDX9121b includes all you
need, and has all you want.
Applications:







Power and Distribution Transformers
Instruments Transformers
Rotating Machines
Power Capacitors
Switchgears
Surge Arrestors
Research & Development
pC
µV
f
t
Partial discharge AC
Partial discharge DC
RIV
Range of
DDX
Services
9121b
INCREASE THE SENSITIVITY
MODULAR DESIGN
The built in frequency spectrum analysis
and selectable frequency band let you optimize your setup in seconds.
For normal partial discharge test on single
phase test objects the basic DDX9121b
is equipped with one measuring input. For distribution transformers, the
DDX9121b - MUX option (enable by software code) add an embedded manual
switch with “ALL” option.
1
f(khz)
10
100
1000
10000
Partial discharge
RF broadcast
Trystor control
Optimized measuring band
USER ORIENTED INTERFACE
The user interface has been designed to
make PD readings easy. All options are
grouped by categories, and the scope
window shows all test related information.
Even specific colors have been selected to
reduce the strain on the user's eyes during
long term testing.
For three phases test (for example power
transformers), several detectors (up to 9)
can be combined and connected to a single computer providing simultaneous PD
readings.
11
12
DDX 9121b
PD INTERPRETATION
SIMULTANEOUS PD AND RIV LEVELS
The advanced data acquisition and analysis software allows a wide variety of possibilities such as recording PD pulses of
each and every test voltage cycle and analyzing them both in the time and phase
domains.
Both RIV voltage (mV, according to NEMA
107-1987) and partial discharge (pC, according to IEC 60270) measurements are
done simultaneously, therefore both are
performed in a single test without overstressing the test object. In addition, real
time comparison between PD level and
RIV is possible.
With the pattern acquisition and analysis
module, several two- and three-dimensional PD pulse patterns of all the monitored channels (when equipped with a
multiplexer) can be displayed and recorded. Snap shots of the 3D patterns can be
saved into a windows gallery for further
use like generation of customized test reports.
DDX9121b-1
PD UNDER DC
While measuring with PD on DC test voltage, an accurate recording of each PD
event is of maximum importance. The
DDX9121b is a trusty device while doing
this particular test.
DDX9121b-1/RIV
DDX9121b-4
DDX 9121b
IV
8 / R
DD
X9
121
-
8 DD
X9
121
-
DD
X9
121
-
6
6 / R
IV
121
-
1
3
3
4
4
6
6
8
8
Opt.
4
Opt.
3
Opt.
12
Opt.
11
Opt.
16
Opt.
15
Opt.
24
Opt.
23
Opt.
32
Opt.
31
SIMULTANEOUS RIV INPUTS
No
1
No
3
No
4
No
6
Not
8
NON-SIMULTANEOUS RIV INPUTS
No
Opt.
3
No
Opt.
11
No
Opt.
15
No
Opt.
23
No
Opt.
31
Opt.
Opt.
Opt.
Opt . Opt .
Opt.
Opt . Opt .
Opt.
Opt.
PHASE RESOLVING ANALYSIS
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SPECTRUM ANALYZER AND SCOPE
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
SELECTABLE MEASURING BAND
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
NON-SIMULTANEOUS PD INPUTS
OPTION DDX9121B / MUX
OPTION DDX9121B / MUX
PD ON DC
OPTION DDX9121B / DC
DD
X9
DD
X9
121
-
4
4 / R
IV
DD
X9
121
-
DD
X9
121
-
3
3 / R
IV
121
-
1
SIMULTANEOUS PD INPUTS
DD
X9
DD
X9
121
-1 /
R
121
-1
DD
X9
IV
STANDARD CONFIGURATIONS
Opt. = Option
OPTIONS
DDX9121B / MUX
DDX9121B / FO
Software key to enable the embedded
non-simultaneous 4 inputs
Fiber optic adapter to connect the
DDX9121B and the computer
DDX9121B / DC
Software key to enable PD measurement
under DC
13
14
DDX 7000
DDX 7000
ADVANCED DIGITAL PD DETECTOR
The DDX7000 Digital Partial Discharge
Detector offers the high accuracy and
flexibility of digital technology, plus the
real-time display and easy operation of
an analog instrument. It is everything you
want in a digital system with everything
you know from an analog system, truly
the best of both worlds. The DDX7000 provides the most intuitive and easy to use
operator interface of all available digital
PD testing systems. Data analysis is fast,
easy and requires little training. Its Windows™ based software allows flexible
test recording and data export to Word™,
Excel™ and other Windows programs.
Applications :








Cables
Power Transformers
Current and Potential Transformers
Rotating Machines
Power Capacitors
Switchgears
Surge Arrestors
Research & Development
pC
V
t
t
Partial discharge AC
Partial discharge DC
Cable fault location
Range ofDDX
Services
7000
ADVANCED ANALYSIS SOFTWARE PACKAGE
AUTOMATIC CALIBRATION
The DDX DA3 Software Package is an ideal tool for research and development or
evaluation laboratories. It allows a user to
collect data on partial discharge activity
and display it in several different formats
for easy analysis and comparison. Multiple blocks of data can be stored, with the
option upon recall of viewing one, several
or all of the blocks. Allowable displays include PD Value vs. Phase, PD Value vs.
Time, Fingerprint, Intensity, and Fractal
Chart and phase domain.
The automated calibration routine ranges
over each amplifier range and calibration
pulse setting. This process measures the
noise contribution from the amplifier and
background. It then automatically adjusts
the noise floor to be above the combined
noise level Once automated calibration
is completed the system calculates and
displays a noise floor and allows amplifier
ranges to be changed without affecting
the system calibration in any way
PARTIAL DISCHARGE SITE LOCATION
FOR POWER CABLES
CUSTOMIZED REPORT GENERATION
Standard reports cover many QC/QA,
process control and product certification
needs. The Haefely Hipotronics DDX detector allows transfer of pulse displays
and data into commonly used word processors and spreadsheets such as Microsoft WordTM and ExcelTM.
If partial discharge levels exceed acceptable standards, it is necessary to employ
modern, advanced techniques to accurately locate the partial discharge sites
so that they can be cut out and the remaining cable shipped to the customer.
Our patented APDSL Automated Partial
Discharge Site Location Software is extremely easy to use. Its patented realtime
display window and data averaging functions, allow an operator to optimize the
instrument settings and achieve site location at sites that are less than the pass/fail
PD level, near the end of cable.
15
16
DDX 8003
DDX 8003
ADVANCED DIGITAL PD DETECTOR WITH PULSE DISCRIMINATION
In factory tests, electrical interference
noise can seriously affect sensitive partial
discharge measurements. Traditionally,
the method of eliminating this noise has
been to screen the test area. In some cases, the use of a screened room limits testing flexibility and impedes the free flow of
products during manufacture.
The DDX 8003 Pulse Discrimination PD
Detection System electronically rejects
interference noise, allowing complete
flexibility of testing together with a flow
of production.
Applications :


Factory test in noisy enviroments
Testing two samples simultaneously
pC
V
t
t
Partial discharge AC
Partial discharge DC
Cable fault location
Range ofDDX
Services
8003
PRINCIPLES OF OPERATION
2. RADIO INTERFERENCE SUPPRESION
Noise can come from conduction through
the mains voltage supply, airborne pickup, and transient coupling. Noise can be
caused by pulse interference generated
by thyristor controllers, pulse interference from other sources, or continuous
radio frequency transmissions. The Pulse
Discrimination System will minimize each
source and type of noise. Three complementary techniques for suppressing unwanted pulse interference are included in
the DDX 8003 detector:
Some radio broadcast frequencies may fall
within the measuring bandwidth of the detection system, reducing the sensitivity of
the partial discharge test. The DDX 8003
includes a radio frequency suppressor to
improve operation under such conditions.
The actual sensitivity of a test can be significantly improved.
1. PULSE DISCRIMINATION
3. TRANSIENT SUPPRESSION
The DDX 8003 detector receives two pulses from both branches and compares
their polarities. If the pulse polarities are
the same in channels, then the pulse is
defined as an external interference. If the
two pulses have opposite polarities, then
the source of the pulse is defined as from
within the test circuit, i.e., Cx or Cb.
The intermittent pulses of interference are
caused by the switching of heavy machinery in close proximity to the test area A
simple antenna placed close to the test
circuit detects any radiated pulses The
DDX will reject pulses detected at A and
B while there is also an interference pulse
detected on the antenna channel
17
Accesories and options
PARTIAL DISCHARGE TESTING ACCESSORIES
0
33
V9
AK
AK
A K V4 6 8
V4 &
6 8 - 1
110
A
S9
AQ
The coupling capacitor together with the
coupling impedance separates the PD
pulses (high frequency) from the normal
AC signal (low frequency).
AK
V9
310
MEASURING IMPENDANCES
DDX 9101
DDX 9121B
*
DDX 7000SL
AKV9310
The AQS9110a measuring impedance is a fully passive measurement
system optimized for use with the
DDX 9101. It is equipped with a user
selectable three positions internal
voltage divider.
AQS9110a
The AKV568 is an active and passive
measuring impedance optimized for
cable fault location together with our
DDX7000SL.
AKV568
The AKV9330 is used for PD testing of
large power capacitors. It is an ideal
IEC 60270 compliant solution for this
particular application.
AKV9330
AQS9110a
AKV9310
The AKV9310 measuring impedance
is a fully passive measurement system optimized for use with the DDX
9121b. It is equipped with an internal
voltage divider and a dedicated 4mm
output connector for an external lowarm device.
AKV568
* only for power capacitors application
AKV9330
18
Accesories and options
KAL 9530
RIV CALIBRATORS
The RIV calibrator KAL 9530 has been
designed to perform an RIV calibration
together with our DDX 9121b PD detector. The unit injects a calibration signal
at the desired frequency into the test
object through a specially designed
RIV calibration set (cable set, probe
and clamp).
KAL 9530
9216
The 9216 is a small battery powered
PD calibrator for direct coupling of the
generated PD signal to the test object
according to the related standards IEC
60270 and IEEE 454. Pulse outputs
ranges are 10, 100, 1000, 10’000 pC.
Triggering of the impulses is done over
external light source synchronization.
KAL 9520
PARTIAL DISCHARGE CALIBRATORS
The KAL 9520 has been designed to
exceed the normal requirements of
a PD calibrator. Its wide range (from
100fC to 50nC), its small injection
capacitor and its advanced features
(double pulse, polarity pulse selection,
internal and external synchronization,
linear range selection, etc) make the
KAL 9520 unique.
As Haefely Hipotronics is accredited
to calibrate and certify PD calibrators
according IEC 17025, an SCS certified
KAL 9520 can be used by inspectors
and quality departments to easily perform a PD installation performance
check
9216
KAL 9520
19
Accesories and options
COUPLING CAPACITORS
9230
CO
U
I M PLI N
PE G
DA
NC
E
C IT
AN
PA
CA
LTA
G
E*
CE
*
Coupling capacitors is a part of the
partial discharge measuring circuit.
A closed loop for the high frequency
PD signals is established between the
test object and the coupling capacitor.
The PD pulses are then captured by the
measuring impedance and brought to
the PD detector.
VO
9230
20
9230/25/1-AQS9110a
25kV
1nF
AQS 9110a
9230/25/1-AKV9310
25kV
1nF
AKV 9310
9230/50/1-AQS9110a
50kV
1nF
AQS 9110a
9230/50/1-AKV9310
50kV
1nF
AKV 9310
9230/100/1-AQS9110a
100kV
1nF
AQS 9110a
9230/100/1-AKV9310
100kV
1nF
AKV 9310
9230/100/10-AQS9110a
100kV
10nF
AQS 9110a
9230/100/10-AKV9310
100kV
10nF
AKV 9310
9230/200/1-AQS9110A
200kV
1nF
AQS 9110a
9230/200/1-AKV9310
200kV
1nF
AKV 9310
*other voltages or capacitances
on request
Technical Specifications
TECHNICAL SPECIFICATIONS
DDX 9101
Amplifier
Gain (Attenuation)
0 dB to 75 dB in 5 dB steps
Attenuator Accuracy
1%
Gain3000
Input Impedance
50 Ω
System Noise
< 12 µV referred to input on highest gain range
Filters
High Pass–20, 30, 50, 60, 80 kHz
Low Pass –100, 200, 400, 500 kHz
PD Measurement
PD Meter Resolution
PD Capture
Phase Resolution
Linearity Error
10 bits displayed
8 bits (7 plus sign)
0.1%
< 1%
Voltage Measurement
Uncertainty of Scale Factor
Linearity (10-100% FS)
Resolution
Measurement modes
Synchronization
Sync Lock range
< 1%
< 1%
11 bits
Peak / √2, true RMS
Local Mains, HV source (automatic)
20 Hz to 400 Hz
Mechanical
Weights
Dimensions
5 kg
19” 3U case, 280 mm deep
Power Supply
100– 240 V, 40– 70 Hz
DDX9121b
Amplifier
Gain(Attenuation)
0 -20 dB -40 dB
Attenuator Accuracy
1%
Gain9000
Input Impedance
50 Ω
Frequency band
30 kHz – 1.5 MHz (-6dB)
System Noise
< 0.1 pC
Filters (IEC)
Center frequency and band, Available BW
- 4, 4.5, 9 kHz
- 10 to 100 kHz in 10 kHz steps
- 100 to 500 kHz in 50 kHz steps
- 0.6 to 1 MHz in 100 kHz steps
Filters (IEEE)
100 – 300 kHz
PD Measurement
PD Meter Resolution
PD Capture
Phase Resolution
10 bits displayed
8 bits (7 plus sign)
0.1%
Linearity Error
< 1%
21
22
Technical specifications
Voltage Measurement
Uncertainty of Scale Factor
Linearity (10-100% FS)
Resolution
Measurement modes
Synchronization
Sync Lock range
< 1%
< 1%
11 bits
Peak / √2 true RMS
Local mains, HV source (automatic)
20 Hz to 400 Hz
RIV measurement
Measurement frequency range
Bandwidth
Output level
RIV system linearity (1 range)
Quasi peak detector response
850 to 1150 kHz
9 kHz (-6 dB)
1 mV onwards
< 2% FSD
As per NEMA 107, ANSI C63.2-1996
Mechanical (per detector)
Weight
Dimensions
Power Supply
6.2 kg
19” 3HU case, 340 mm deep
90 –260 V, 47– 63 Hz
DDX7000SL/DDX8003
PD Measurement Unit
PD Measurement Range
PD Measurement Resolution PD Phase Resolution Time Resolution Amplitude Capture Accuracy
Amplifier Ranges Window Gating 0…99999pC, in standard notation
9 bits plus sign
0.35 degrees
12.5 ns (80 MHz sampling rate)
Better than 1%
12 switched 5 dB ranges
1 or 2 gates on sine wave
PD Amplifier
PD Amplifier ranges PD Amplifier Fine Adjustment PD Amplifier Gain Linearity
PD Amplifier Frequency Range PD Amplifier Filter Settings
6 switched 20 dB ranges
10:1 in 200 steps
< 1% over whole range
20 kHz to 500 kHz
High Pas: 20 kHz, 30 kHz, 50 kHz, 60 kHz, 80 kHz
Low Pass: 100 kHz, 200 kHz, 300 kHz, 400 kHz, 500 kHz
Voltage Measurement Unit
Voltage Measurement Voltage Measurement Accuracy Voltage Frequency Sync Range
Voltage Measurement Input
peak scaled RMS and true RMS
Better then 0.5% at I/P socket
5 Hz…500 Hz
10 V peak
Internal calibrator
Calibrator Maximum Output Calibrator Output Range Calibrator Fine adjustment Calibrator Output Rise Time
Operating Temperature 10 V step (1000 pC into 100 pF)
1 mV…10 V in 13 Ranges
0…range voltage in 256 steps
Less then 25 ns into 100 pF, slower for higher capacitances
10°C…35°C
Mechanical
Weight Dimensions
18 or 23 kg (40 or 50 Lbs)
445 mm x 270 mm x 460 mm (17.5” x 10.5” x 18”)
Technical specifications
ACCESORIES
Impedances
AKV9310
Max. Current
PD upper limit frequency Mechanical dimmensions
3A
>8MHz
90 mm x 160 mm x 80 mm (W x L x H)
AQS 9110a
Max. Current
PD upper limit frequency Mechanical dimmensions
6A
>5MHz
160 mm x 260 mm x 90 mm (W x L x H)
AKV 568
Max. Current
PD upper limit frequency Mechanical dimmensions
0.5 A
>5MHz
160 mm x 260 mm x 90 mm (W x L x H)
AKV 9530
Max. Current
PD upper limit frequency Mechanical dimmensions
300 A
>8MHz
160 mm x 130 mm x 70 mm (W x L x H)
Calibrators
9216
Calibration pulse ranges
Rise time Injection capacitor Mechanical dimmensions
10, 100, 1000, 10’000 pC
<60ns
18 pF (<100pC)
67 mm x 110 mm x 42 mm (W x L x H)
9520
Calibration pulse ranges
Rise time Injection capacitor Mechanical dimmensions
100fC to 50nC (any value)
< 20ns
1 pF (<200pC);
120 mm x 200 mm x 35 mm (W x L x H)
TA
PP
LA
TU
PD
HE
LE
IGH
VE
CE
C IT
AN
CA
PA
E*
VO
LTA
G
RO
N
X.
Coupling capacitors
9230/XX/25
25kV
1nF
≤ 1 pC
619 mm
9230/XX/50
50kV
1nF
≤ 1 pC
619 mm
9230/XX/100
100kV
1nF/10nF
≤ 1 pC
896 mm
9230/XX/200
200kV
1nF
≤ 1 pC
1322 mm
All coupling capacitors include a suitable coupling impedance.
* Voltage ratings above 200 kV available on request
23
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China
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Beijing, China 100025
 +86 10 8578 8099
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North America
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Brewster, NY 10509
United States
 +1 845 279 3644
 +1 845 279 2467
 sales@hipotronics.com
HAEFELY HIPOTRONICS has a policy of continuous product improvement. We therefore reserve the right to change design and specification without notice.
January 2014
Europe
Haefely Test AG
Birsstrasse 300
4052 Basel Switzerland