 
LAPLACE INSTRUMENTS
 
Credence Technologies provides a broad range of
solutions for the EMC, RF and ESD world -- from diagnostics tools, such as
active near-field ScanEM probes to complete EMC Compliance setups. Credence
Technologies is the North American distributor of Laplace Instruments & York EMC
Services.
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Harmonics
& Flicker Generator
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Picture |
Model |
Features |
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HFG01
EN61000-3-2
: 2004
EN61000-3-3
: 2004
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The Harmonics & Flicker Generator (HFG01) has been
designed by York EMC Services Ltd for the purpose of verifying harmonic
and flicker test equipment. Until now there has been no easy and
reliable way to externally check the performance of the measurement
system to the EN/IEC 61000-3-2 harmonics and EN/IEC 61000-3-3 flicker
standards.The HFG01 allows the user to
periodically verify their test equipment, ensuring compliance with
standards and laboratory quality procedures. The unit provides a series
of harmonic and flicker disturbances of a nominal but stable level. The
generator may therefore be used to verify the stability of a measurement
system. Alternatively due to its stability it may be used as a transfer
standard from a calibrated system.
- Stable load simulation
- Repeatable measurements
- Injects harmonics to EN61000-3-2 and flicker
to EN61000-3-3
- Evaluation of test systems specifically to EN
standards
- Compact and Portable
- Comparisons between multi-site test environments
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Applications
- Harmonics and flicker measurement systems
validation and verification
- Reference source for:
- Daily pre-test check
- Long-term performance monitoring
- Comparison of different harmonics and flicker
measurement systems
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Operation
The unit is a standalone device and requires no
additional equipment. A four-way rotary switch selects the mode of
operation. The modes are defined by firmware running on a
micro-controller. This will enable the characteristics of the generator
to be reprogrammed in line with future changes to the standards.
The HFG01 simulates equipment under test (EUT),
generating known, repeatable levels of harmonic and flicker disturbance
in one of four modes of operation.
- In Steady State harmonics (SS) mode, a
harmonic-rich current waveform is generated, allowing the harmonic
measurement system to be verified. In this mode the generator
simulates Class D equipment and produces harmonic levels that will
fail the EN/IEC61000-3-2 pre A14 and A14 Class D limits. This mode
will pass EN/IEC61000-3-2 pre A14 and A14 Class A limits.
- Fluctuating
harmonics (FL) mode alternates between two distinct current
waveforms over a 10-second cycle. This mode again fails the
EN/IEC61000-3-2 pre A14 Class D limits but passes the A14 limits.
- In flicker test mode, a fixed level of
mains disturbance is generated at a rate of 8.33Hz or 1Hz.
- When tested to EN/IEC61000-3-3, the 8.33Hz
rate produces a Pst >1, which lies above the limit
line.
- The 1Hz setting produces a Pst <1,
which falls below the same limit.
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Specifications |
| Frequency Range |
50Hz to 2kHz (40th harmonic) direct
connection |
| Output connector |
Standard mains plug to mate with
local test equipment |
| Dimensions |
330mm × 320mm × 170mm |
| Weight |
4kg |
| Power supply |
230Vac, 50Hz, 400W (maximum) |
| Indicators |
Thermal shutdown - red LED |
| Flicker |
Rate |
Pst |
| 1.0 Hz |
0.462 |
| 8.333 Hz |
1.235 |
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Standard Order Kits
| Part
Number |
Description |
Parts Included |
| HFG01KIT01 |
Standard HFG01 harmonics and flicker
generator kit |
- HFG01 harmonic and flicker generator
- CAL12 - standard test
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Output Measurement Results
| Order
Nº |
Type |
Description |
| CAL12 |
Harmonics |
Measurement of load current made
according to EN61000-3-2 in Steady State and Fluctuating
Harmonics modes. Fundamental (50Hz) to 40th harmonic. |
| Flicker |
Measurements of short term flicker (Pst)
made according to EN61000-3-3 with disturbance at 1Hz and
8.33Hz rates |
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Typical Output Measurement Results
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Harmonics
& Flicker Analyzer
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Picture |
Model |
Features |
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AC2000A
EN61000-3-2
: 2001
EN61000-3-3
: 2000 EN60868
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The AC2000A is a fast, easy to
use mains and harmonics analyzer with full graphical display. It is
capable of continuous real-time analysis of both voltage and current.
As a general purpose mains analyzer it can
measure Watts, VA Vrms, Vpk, Arms, Apk, Crest factors, THD, Power factor,
Frequency and Inrush current.
As a harmonics analyzer it is a quick and
convenient instrument for pre-compliance measurements using normal mains
supply and is capable of full compliance measurements to
EN61000-3-2
in conjunction with a suitable power source.
As an option, the AC2000 can be operated as
a conformance quality
flicker meter in conformance with EN60868 and
EN61000-3-3. |
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Mains Analyzer |
| Measurement Circuit: |
Single Phase with standard
mains connector. |
| Current Rating: |
16A rms continuous, or national
connector rating if lower. |
| Voltage Ranges: |
115V (±200V pk) 230V (±400V pk). |
| Current Ranges: |
±24mA pk to ±400A pk in fifteen
2:1 ranges |
| Frequency Range: |
45 - 66 Hz. |
| Shunt Resistance: |
3m ohms. |
| Sampling Rate: |
300 points per cycle. |
| Basic Accuracy: |
<0.2%. |
| Measured Parameters: |
Vrms, Vpk, Arms, Apk, Crest
factors, THD, W, VA, Power factor, Frequency, Inrush current. |
| Monitor Outputs: |
Re-constructed Voltage and
current signals |
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Harmonics Analyzer |
| Measurements: |
1 st
harmonic to 40 th
harmonic. |
| Current Rating: |
16A rms continuous, or national
connector rating if lower. |
| Voltage Ranges: |
115V (±200V pk) 230V (±400V pk). |
| Current Ranges: |
±24mA pk to ±400A pk in fifteen
2:1 ranges |
| Frequency Range: |
45 - 66 Hz. |
| Shunt Resistance: |
3m ohms. |
| Sampling Rate: |
300 points per cycle. |
| Basic Accuracy: |
Better than 5% of limit or 0.2%
of selected range whichever is the greater. |
| Display Modes: |
Numeric readout of parameters.
Graphical Waveform display with accumulate and max.
Hold facilities and class D mask.
Tabular and Histogram harmonic analysis with comparison to limits in
the standards. |
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Flicker Meter (Option) |
| Measurement: |
P st
and P lt to EN60686 and
EN61000-3-3. |
| Current Rating: |
16A rms continuous, or national
connector rating if lower. |
| Voltage Ranges: |
115V (±200V pk) 230V (±400V pk). |
| Current Ranges: |
±24mA pk to ±400A pk in fifteen
2:1 ranges |
| Frequency Range: |
45 - 66 Hz. |
| Shunt Resistance: |
3m ohms. |
| Sampling Rate: |
300 points per cycle. |
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General |
| Display: |
320 x 240 pixel backlit LCD. |
| Interfaces: |
Parallel Printer, RS232,
Optional IEEE-488 (GPIB). |
| Instrument Supply: |
230V or 115V ±14%, 48 to 65 Hz. |
| Operating Range: |
+5°C to 40°C, 20-80% RH. |
| Storage Range |
-10°C to +60°C |
| Dimensions: |
305 x 148 x 220mm (WxHxD) |
| Weight: |
4.2kg |
| Safety: |
Complies with EN61010-1 |
| EMC Compliance: |
Complies with EN61326-1 |
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Low Distortion Power Supply
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Picture |
Model |
Features |
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AC1000A
IEC61000-3-2
: 2001
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The ACl000A is an
innovative, low cost, pure power source designed specifically for use with a
harmonics analyzer such as the Laplace AC2000A, permitting compliance
quality measurements to EN61000-3-2.
The AC supply available at a standard wall socket is usually distorted. This
comes about because of nonlinear loads (non-resistive loads) on the AC
supply such as transformers, fluorescent lights, switched-mode power
supplies etc. In a typical load there are rectifiers and capacitors that
cause current to be drawn from the supply only near the peak of the
waveform. The effect of this is to flatten off the top of the sine wave
causing significant distortion.
In a typical factory environment this distortion can be so significant that
the distortion is easily visible using an oscilloscope.
EMC legislation (EN61000-3-2) has made mandatory the measurement of harmonic
current produced by electronic equipment, and requires that the source
supply provides a pure voltage waveform to the equipment under test. The
harmonic currents can vary significantly when a pure source is used so it is
important that any testing is performed with a device such as the AC1000.
Compact and portable the AC1000 is rated up to 1000 V.A for 230 V operation
and will supply 1000 V.A at 230 V input at up to 35°C ambient. In contrast
to other techniques which use a passive filtering approach, the AC1000 uses
an innovative technique which actively corrects the AC supply to produce a
harmonically pure output.
The ACl000 is also very useful for stress testing power supplies in
electronic equipment. The use of a harmonically pure, distortion free device
- such as the ACl000A - is essential to fully stress and evaluate the power
supply under test.
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Specification |
| Input
voltage: |
Factory set to
230V/50Hz, 230V/60Hz, 110V/50Hz or 110V/60Hz |
| Supply
Tolerances: |
230V setting: 198V
- 253V
110V setting: 90V -127V
50Hz setting: ± 0.5Hz
60Hz setting: ± 0.6Hz |
| Output
Voltage: |
Tracks the
amplitude of the fundamental of the input voltage. A variable
voltage input may be used to adjust the output voltage to within the
limits specified by EN61000-3-2. |
| Output
Distortion: |
Dependent on the
purity of the input but will generally meet the requirements of
EN61000-3-2. |
| Output
Current: |
Maximum continuous
output current is 4.4A. |
| Output
Power: |
Maximum output
power is input voltage x 4.4 VA |
| Input
Connection: |
Maximum output
power is input voltage x 4.4 VA |
| Output
Connection: |
U.K., Schuko, or
other national outlet sockets. Load power switch can be set to
direct or corrected for ‘A—B’ comparisons. |
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Protection: |
Thermal trip
automatically diverts load to a ‘direct’ connection in the event of
thermal overload. |
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Operating Range: |
5°C to 35°C at full
rated output. |
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Storage Range: |
-40°C to +70°C |
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Environmental: |
Indoor use at
altitudes to 2000m, Pollution Degree 2. |
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Safety: |
Complies with
EN61010-1 |
| EMC: |
Complies with
EN61326-1 |
| Size: |
307 x 105 x 225 mm
(W x H x D) |
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Weight: |
5 kgs. |
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