Power Measurement DEWE-PM In times of power electronics power measurement is not only a multiplication of current and voltage but primarily an analysis of interfering high-frequency and broadband signals. Sinusoidal qualities, as once electric current and voltage, are displaced by pulse packages; power ratings do not have only 50 or 60 Hz any longer. Beside the calculation of power for the fundamental oscillation and all signals, questions of harmonics, symmetries, flickers and start-up processes arise. Switching frequencies of drive mechanisms having several kHz require sampling rates of several hundred kHz and analogical bandwidths of input amplifiers. The demand of preciseness is far below 0.1 % and this should preferably be the case in the entire frequency spectrum and amplification range. Applications Wideband power analysis Engine test benches Transformer tests RPM (rotation per minute) and torque measurement Determination of efficiency factor Harmonics analysis Record of dynamic processes Streaming up to 1 Msamples/s Examination of rotating field Hybrid cars and alternative drive systems www.dewetron.com/power-measurement Power Fault Recording Power Measurement Power Network Analysis E-Mobility Power Measurement Automotive Energy & Power Analysis Aerospace & Defense Tr a n s p o r t a t i o n G e n e r a l Te s t & M e a s u r e m e n t 1 Grid DEWE-xxx-PM U-module DAQP-HV f 3~ A/D 1 Msamples/s CPU POWER module Math. functions I-module DAQP-LV M 3~ n, M DEWESoft CAN VIDEO P, Q, S, ... FFT Symmetrical components n, M, ω, η High-speed recording (Streamer) Long term recording (Logger) 2 www.de we t ron .com Power Measurement Or is it wiser to say that voltage has many velocities (frequencies)? Isn’t it more adequate to say that current does not only have one sinus but a number of sinusoidal oscillations (harmonics)? Isn’t it also adequate to say that power is the sum of all products of current, voltage and phase angle? And this brings us right to the discussion: What is happening to all these products? Parts with the same frequency can reach effects (active power) or only help to build up a magnetic field (reactive power). Some are necessary for the powering of electrical motors (fundamental oscillations) and some products result from the multiplication of components with different frequencies (distortion power). ? Additionally, the question arises how high-frequent the analysis of the components of the electrical system has to be. If we talk about pulse-wide modulated drives, we have sampling rates in the range of above 10 and 100 kHz. Questions over questions …. ? ?? ? Power Fault Recording Power Network Analysis But fortunately you do not have to worry about how to measure these things. We have already done that for you and products of DEWE-PM series do not only have power measurement but also modules for harmonics analysis, symmetrical components and flickers. Long-term recordings as well as quick sampling rates for the examination of e.g. start-up procedures are possible. E-Mobility Have you ever thought about the complex mechanism of statements like P=U*I*cosPhi? Have you ever thought about the meaning of the current being a sinus? Do you even know the velocity of voltage? Does it even have a velocity (= frequency)? Power Measurement DEWETRON Power Measurement www.dewetron.com/power-measurement 3 DEWESoft POWER Measurement Software The option POWER for the DEWESoft (DEWESoft-OPT-POWER) is an absolutely high-performance tool for the calculation of power and other similar parameter – the capacity to multiply current and voltage is not the only feature it has. This toolbox is an excellent combination of many features and nearly all applications can be realised by using DEWETRON equipment. Beside the exact calibration the frequency calculation is a central feature of this software. 50 Hz and 60 Hz are a must – for us also 16.7, 400 and 800 Hz as well as DC and variable frequencies (driver) are a necessity. Due to the high acquisition rate (mainly dependent on the AD card in use, up to 1 MS/s) and the DAQP-HV-S3 module there is no limitation of the acquisition of PWM drivers (700 kHz electrical bandwidth) and the calculation of active and reactive power, power factor etc … The toolbox with power quality parameters such as harmonics, interharmonics, THD, symmetric components, flicker and its combination with numerous trigger possibilities make the equipment a power analyser with nearly no limitations. Several screen elements such as vectorscopes, harmonics monitor, oscilloscope and diagrams allow a perfect online visualisation of the data. The integration of counter inputs, video and CAN-bus offers additional data sources. The mathematical library additionally offers the possibility to calculate parameters such as torque and angular velocity, or even determine the efficiencies online. 4 www.de we t ron .com Power Measurement Power Calculation P, Q, S, D Symmetrical components (positive, negative and zero sequence components); U, I, P, Q, cosPhi; from 10 period values and period values Period values (½ cycle, cycle, overlapping, 1 ms sliding, ...) Frequency Calculation The software PLL guarantees a very accurate frequency calculation (mHz). On one system multiple power systems can be measured and each can have its own frequency. With the use of the different instruments from DEWESoft the values can be shown in several ways. Calibration/Accuracy The high accuracy of the calculation can be reached because of the calibration function in the frequency domain. With this unique technology amplitude and phase can be corrected for the full frequency range from DC up to whatever the hardware can sample (kilosamples up to megasamples per second). All internal curves like filter response or multiplexer shift are corrected inside the software and the sensor database includes correction curves for each clamp, rogowski coil, transformer or which sensor ever is used. E-Mobility P, Q, cosPhi for each harmonic Power Measurement CosPhi, power factor Scope Power Network Analysis Selectable graphs U1, U2, U3, U12, U23, U31: Line to line and line to earth voltages are supported Up to 8 graphs in one diagram Zoom in and out are supported online Waveforms can be stored Vector Scope Vector scope for 3 phase systems Each individual harmonic can be shown More vector scopes can be displayed on one screen Different power systems can be shown on one screen Power Fault Recording With the “transparent” function direct comparisons of phasors are possible Recorder Recording of all parameters in individual intervals Individual screens can be defined Zoom in and out Storing fast (full sampling rate) or reduced (e.g. 600 sec.) Detailed zoom-in to pulse width! www.dewetron.com/power-measurement 5 X/Y Recorder Orbitals can be generated online P over Q as example for this function FFT - Harmonics Analysis U, I, P and Q Individual setup of the number of harmonics including DC-component (Example: 20 kHz sampling rate = 200 harmonics @ 50 Hz) Interharmonics, groups or single values According to IEC 61000-4-7 Calculation corrected to the actual real frequency THD, THD even, THD odd Trigger on each parameter Background harmonics substractable Optionally definable group-mode for harmonics and interharmonics. Selectable number of pins and frequency groups - “200 Hz“ according to IEC 61000-4-7 (OPT-DB required) Full FFT - Frequency Analysis In addition to the harmonics FFT a full frequency based FFT is available. All frequencies can be analyzed with this function Trigger on FFT patterns Definable filters (hanning, haming, flat top, rectangle, …) Flicker According to IEC 61000-4-15 P ST and P LT with flexible intervals Individual recalculation intervals PF5, du, du max Flicker emission (current flicker) Fault Recorder Setting a trigger on all parameters of the power module! U, I, P, Q, S, D, cos Phi, power factor, ... Each harmonic! Pos-, neg-, zero-sequence systems Very fast glitch detection (up to MS/s) Math. channels (rpm, torque, efficiency,…) Edge-, filtered edge- and window-trigger Setting the trigger on rising edge when the threshold has been crossed Setting the trigger on falling edge when the threshold has been crossed Setting the trigger when signal enters the range between two definable threshold levels Setting the trigger when signal leaves the range between two definable threshold levels Further trigger functions: pulse width, window and pulse width, slope, FFT and time 6 www.de we t ron .co m Power Measurement Additional Features Video Power Measurement The parallel usage of the synchronic DEWESoft VIDEO function allows the user to store videos in parallel with the data recording and opens a wide range of applications – whenever optical information is needed! Other Additional Input Channels Other DEWETRON DAQP modules are available with which – depending on the kind of sensor - other parameters such as temperature, sound and vibration can be measured in parallel ways. More detailed information can be found in the DEWE-DAQ manual or be obtained from your DEWETRON dealer. Math Functions With the additional MATH Function of DEWESoft calculations of for example efficiency, difference of input, output and phase angle differences can be implemented easily. Use all POWER parameters as input value! E-Mobility Arithmetic functions Trigonometric functions Logic functions Signal generator Event functions d/dt, integration Highpass-, lowpass- and bandpass-filters GPS and NET With the use of the GPS function a comparison of different units on different locations is possible. Phasor measurement and angle comparisons are typical apps for this function. Rotational and Torsional Vibration Measurement Torsional vibration is an oscillation of angular motion (twist) which occurs on rotating parts - such as gear trains, crankshafts or clutches. High torsional forces and vibrations result in material fatigue, abnormal abrasion etc. and can be destructive in the long run. In many cases, torsional vibration is not noticed until the affected part is damaged. Often only vibration noise is the only indication of torsional vibration. Remote Control With the remote control ability the instrument can be configured and the data can be evaluated from your office or wherever you are. Report Generator and Database Storing (DEWESOFT-OPT-DB) In several applications, especially when it is necessary to evaluate data over long periods, with different sampling rates or in parallel to their acquisition, it might be necessary to use a really strong database tool. Therefore DEWETRON has developed the DATABASE OPTION as an add-on to DEWESoft. Beside data storing there is also a strong reporting tool available. Diagrams, FFT spectra, Fault reportings and statistic functions are the basic functions and additional reports can be added by using the plug in Technology. Nice visual elements can be used to get a good overview about the full measurement system. Power Fault Recording Power Network Analysis Transfer curve functions Reports like EN50160 or IEC 61000-2-4 can be easily generated as well as large customized reports on the user‘s needs. www.dewetron.com/power-measurement 7 PM Instruments Nothing is required to complete these instruments. Dynamic analog input channels DEWE-820-PM-500 DEWE-2600-PM-500 DEWE-5000-PM-500 DEWE-820-PM-500-8: 8 DEWE-820-PM-500-16: 16 DEWE-2600-PM-500-8: 8 DEWE-2600-PM-500-16: 16 DEWE-5000-PM-500-8: 8 DEWE-5000-PM-500-16: 16 Included DAQP modules at 8 channel units 4x DAQP-HV-S3 and 4x DAQP-LV-B Included DAQP modules at 16 channel units 8x DAQP-HV-S3 and 8x DAQP-LV-B External quasi-static channel expansion EPAD interface, up to 16 EPAD2 modules = 128 ch A/D conversion Sampling method Simultaneous sampling Sampling rate / channel 500 kS/s Resolution 16 bit Digital I/O and counters Digital I/O, TTL level 8 Counters or digital inputs, TTL level (1 counter equals 4 digital inputs) 2 /8 Options UP-CNT8-TTL adds 8 synchronous counter / encoder or 32 digital inputs, TTL level via external box ORION-CB-CNT8 UP-CNT8-DIFF adds 8 sync. counter / encoder or 24 digital inputs with programmable threshold levels (0..40 V), input voltage range -35 to 60 V, AC/DC coupling, and 8 sync. digital inputs protected up to 25 VDC, TTL level via external box ORION-CB-CNT8 CAN bus option UP-CAN-2 optional 2 high-speed CAN bus interfaces Video input option UP-DEWE-CAM-01 adds synchronized video picture acquisition, up to 70 fps at 640 x 480 pixel Optional sensors Current / Shunt 5 A / 0.1 Ohm Shunt Current / Transducers 60, 200, 400, 700, 1000, 2000, 5000 A Current / Clamps Various models, e.g.: 150 ADC / 1400 AAC EMC ESD IEC 61000-4-2 EMC EN 55011 Power supply Voltage inputs Current inputs Surge IEC 61000-4-5 Burst IEC 61000-4-4 4 kV 4 kV; L, N, PE Surge IEC 61000-4-5: 4 kV Burst IEC 61000-4-4: 4 kV Surge IEC 61000-4-5: 4 kV Burst IEC 61000-4-4: 4 kV Shock and vibration Shock Desktop or rack mount installation only Vibration Desktop or rack mount installation only EN 60068-2-6, EN 60721-3-2 class 2M2 MIL-STD 810F 514.5, procedure I EN 60068-2-27 MIL-STD 810F 516.5, procedure I Environmental Operating temperature 0 to +50 °C 0 to +50 °C (0 to +45 with batteries) Storage temperature Humidity Data storage 10 to 80 % non cond., 5 to 95 % rel. humidity 1) Technology Hard disk Capacity Max. gap free storing to disk Typ. duration of recording (16 ch. / 10 kS/s/ch. / 16 bit) Main system 0 to +50 °C -20 to +70 °C 1000 GB 600 GB 1000 GB Typ. 70 MB/s Typ. 80 MB/s Typ. 70 MB/s 35 days 20 days 35 days 15” TFT (1024 x 768) 17” TFT (1280 x 1024) 1) Display - Processor Intel® Core™2 Duo 2 GHz Current transducer power supply 9V 4x Binder 712 socket Interfaces 4x USB, 2x Ethernet, 1x RS-232 Power supply Standard 95 to 260 VAC 50 / 60Hz 110 / 220 VDC Battery powered, 3 battery slots 2), 3 batt. for ~2 hrs. operation incl., incl. external AC power supply 95 to 260 VAC 50 / 60Hz 110 / 220 VDC Optional - 95 to 260 VAC 50 / 60Hz or 110 / 220 VDC - Dimensions Housing 19” rack-mount, 4U Portable instrument Portable instrument Dimensions (W x D x H) 437 x 443 x 181 mm (17.2 x 17.4 x 7.1 in.) 417 x 246 x 303 mm (16.4 x 9.6 x 11.9 in.) 460 x 351 x 192 mm (18.1 x 13.8 x 7.7 in.) Weight without batteries Typ. 12 kg (26.4 lb.) Typ. 14 kg (31 lb.) Typ. 17 kg (37.4 lb.) 1) 8 Please find current specifications in the latest price list 2) Weight of one battery: 660 g (1.45 lb.) www.de we t ron .com DEWE-820-PM-1000 DEWE-2600-PM-1000 DEWE-5000-PM-1000 DEWE-820-PM-1000-8: 8 DEWE-820-PM-1000-16: 16 DEWE-2600-PM-1000-8: 8 DEWE-2600-PM-1000-16: 16 DEWE-5000-PM-1000-8: 8 DEWE-5000-PM-1000-16: 16 4x DAQP-HV-S3 and 4x DAQP-LV-B 8x DAQP-HV-S3 and 8x DAQP-LV-B EPAD interface, up to 16 EPAD2 modules = 128 ch Simultaneous sampling 1 MS/s 16 bit DEWE-820-PM-1000-8: 8 DEWE-820-PM-1000-16: 16 DEWE-2600-PM-1000-8: 8 DEWE-2600-PM-1000-16: 16 DEWE-5000-PM-1000-8: 8 DEWE-5000-PM-1000-16: 16 DEWE-820-PM-1000-8: 2 / 8 DEWE-820-PM-1000-16: 4 / 16 DEWE-2600-PM-1000-8: 2 / 8 DEWE-2600-PM-1000-16: 4 / 16 DEWE-5000-PM-1000-8: 2 / 8 DEWE-5000-PM-1000-16: 4 / 16 Power Measurement Power Measurement E-Mobility via external box ORION-CB-CNT8 5 A / 0.1 Ohm Shunt 60, 200, 400, 700, 1000, 2000, 5000 A Various models, e.g.: 150 ADC / 1400 AAC IEC 61000-4-2 4 kV 4 kV; L, N, PE IEC 61000-4-5: 4 kV IEC 61000-4-4: 4 kV IEC 61000-4-5: 4 kV IEC 61000-4-4: 4 kV Desktop or rack mount installation only EN 60068-2-27 MIL-STD 810F 516.5, procedure I Desktop or rack mount installation only EN 60068-2-6, EN 60721-3-2 class 2M2 MIL-STD 810F 514.5, procedure I 0 to +50 °C 0 to +50 °C (0 to +45 with batteries) 0 to +50 °C -20 to +70 °C 10 to 80 % non cond., 5 to 95 % rel. humidity Hard disk 1000 GB 600 GB 1000 GB Typ. 70 MB/s Typ. 80 MB/s Typ. 70 MB/s 35 days 20 days 35 days 15” TFT (1024 x 768) 17” TFT (1280 x 1024) - Intel® Core™2 Duo 2 GHz 4x Binder 712 socket 4x USB, 2x Ethernet, 1x RS-232 95 to 260 VAC 50 / 60Hz 110 / 220 VDC Battery powered, 3 battery slots 2), 3 batt. for ~2 hrs. operation incl., incl. external AC power supply 95 to 260 VAC 50 / 60Hz 110 / 220 VDC - 95 to 260 VAC 50 / 60Hz or 110 / 220 VDC - 19” rack-mount, 4U Portable instrument Portable instrument 437 x 443 x 181 mm (17.2 x 17.4 x 7.1 in.) 417 x 246 x 303 mm (16.4 x 9.6 x 11.9 in.) 460 x 351 x 192 mm (18.1 x 13.8 x 7.7 in.) Typ. 12 kg (26.4 lb.) Typ. 14 kg (31 lb.) Typ. 17 kg (37.4 lb.) www.dewetron.com/power-measurement Power Fault Recording IEC 61000-4-4 Power Network Analysis EN 55011 IEC 61000-4-5 9 HV Modules Input ranges unipolar and bipolar DAQP-HV-S3 HSI-HV 20 V, 50 V, 100 V, 200 V, 400 V, 800 V, 1400 V 20 V1), 50 V1), 100 V, 200 V, 400 V, 800 V, 1400 V DC accuracy 20 V and 50 V 100 V to 1400 V Filter (lowpass) Filter characteristics AC accuracy Frequency accuracy Angle errors ±0.05 % of reading ±40 mV ±0.05 % of reading ±0.05 % of range 10, 30, 100, 300, 1k, 3k, 10k, 30k, 100k, 700 kHz(1) Bessel or Butterworth 40 dB/decade Frequency additional AC error f/f0 % of reading <0.1 0 0.1 0.01 0.2 0.14 0.3 0.72 0.5 4.2 0.75 20 1 40 ±1 mHz Frequency f/f0 <0.1 0.1 0.2 0.3 0.5 0.75 1 Gain linearity Error ° 0.001 0.25 0.75 0.8 1 1 1 0.05 % of full scale Typical 0.5 mV/°K Typical 5 ppm/°K max. 4 mV/°K max. 20 ppm of Range/°K 100 ppm/sqrt (1000 hrs) 10 MOhm 3 dB Bandwidth (DAQP-HV) 700 kHz(2) Filter selection 2 MHz Push button or software 10, 30, 100, 300, 1k, 3k, 10k, 30k, 100k, 300 kHz(3,4), 700 kHz(5) Filter type 50 V 200 V 1400 V ±1 mHz Frequency f/f0 <0.1 0.1 0.2 0.3 0.5 0.75 1 Typical 20 ppm/°K (max. 50 ppm/°K) Input resistance Typical SFDR and SNR 0.03 % of full scale Long term stability Filter (lowpass) Error ° 0.001 0.25 0.75 0.8 1 1 1 Gain drift range Offset drift 20 V to 100 V 200 V to 1400 V 100, 300, 1k, 3k, 10k, 30k, 100k, 300k, 1M, 2 MHz(1) Bessel or Butterworth 40 dB/decade Frequency additional AC error f/f0 % of reading <0.1 0 0.1 0.01 0.2 0.14 0.3 0.72 0.5 4.2 0.75 20 1 40 100, 300, 1k, 3k, 10k, 30k, 100k, 300 kHz, 1 MHz, 2 MHz2) Bessel or Butterworth 40 dB/decade 300 kHz SFDR SNR 98 76 98 84 98 86 100 kHz SFDR SNR 101 81 dB 101 89 dB 102 91 dB Typical CMRR 10 kHz SFDR SNR 108 90 dB 108 91 dB 107 92 dB CAT III 600 CAT IV 300 ±4000 V ±4000 V Surge (1.2/50) Burst (5 kHz) Output voltage ±5 V Output resistance <10 Ohm Output current 5 mA Output protection Short to ground for 10 sec. Power supply Connector RS-485 interface 10 kHz SFDR SNR 108 90 dB 108 91 dB 107 92 dB Line to Ground 1.4 kVrms Line to Line 1.8 kVrms Protection Power On default settings 100 kHz SFDR SNR 101 81 dB 101 89 dB 102 91 dB >80 dB @ 50 Hz 70 dB @ 400 Hz 60 dB @ 1 kHz 48 dB @ 10 kHz Isolation voltage Power consumption 1 MHz SFDR SNR 98 76 98 84 98 86 ±9 VDC ± 1% 0.7 W 1W Software programable -B -SC Yes 20 V and 50 V bandwidth limited to 1 MHz 1 MHz exclusively for Bessel filter characteristic 300 kHz exclusively for Bessel filter characteristic 4) 180 kHz exclusively for DAQP-HV Revision 1.00 5) 700 kHz exclusively for Bessel filter characteristic 1) 2) 3) 10 www.de we t ron .co m Power Measurement Push button selectable ranges Filter (lowpass) Filter characteristics AC accuracy Frequency accuracy Angle errors Accuracy ±0.02 % of reading ±40 µV ±0.02 % of reading ±0.05 % of range ±0.04 % of reading ±40 µV ±0.04 % of reading ±0.05 % of range Range 10 mV to 50 mV 100 mV to 50 V 10 mV to 50 mV 100 mV to 50 V 10, 30, 100, 300, 1k, 3k, 10k, 30k, 100k, 300 kHz(1) Bessel or Butterworth 40 dB/decade Frequency additional AC error f/f0 % of reading <0.1 0 0.1 0.01 0.2 0.14 0.3 0.72 0.5 4.2 0.75 20 1 40 ±1 mHz Frequency f/f0 <0.1 0.1 0.2 0.3 0.5 0.75 1 Input coupling 100, 300, 1k, 3k, 10k, 30k, 100k, 300k, 1M, 2 MHz(1) Bessel or Butterworth 40 dB/decade Frequency additional AC error f/f0 % of reading <0.1 0 0.1 0.01 0.2 0.14 0.3 0.72 0.5 4.2 0.75 20 1 40 Error ° 0.001 0.25 0.75 0.8 1 1 1 ±1 mHz Frequency f/f0 <0.1 0.1 0.2 0.3 0.5 0.75 1 0.01 % of full scale Gain drift range 0.03 % of full scale Typically 10 ppm/°K (max. 20 ppm/°K) Offset drift 10 mV to 200 mV 500 mV to 50 V Uni- and bipolar 3 µV/°K 10 ppm of Range/°K Long term stability 100 ppm/sqrt (1000 hrs) Input resistance 1 MOhm Bandwidth (-3 dB) 300 kHz 2 MHz Filter selection Push button or software 10 Hz, 30 Hz, 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz Filters (low pass) Filter characteristics Typical SFDR and SNR: 300 kHz SFDR SNR 100 dB 72 dB 102 dB 82 dB 102 dB 82 dB Typical CMRR 10 Hz to 100 kHz: 300 kHz: 100 kHz SFDR SNR 98 dB 76 dB 99 dB 93 dB 99 dB 93 dB 100 Hz, 300 Hz, 1 kHz, 3 kHz, 10 kHz, 30 kHz, 100 kHz, 300 kHz, 1 MHz Butterworth or Bessel 40 dB/dec (2nd order; ±1.5 dB @ f0) Bessel 60 dB/dec (3rd order; 0 to -3 dB @ 300kHz) 10 kHz SFDR SNR 97 dB 84 dB 97 dB 96 dB 97 dB 96 dB 1 MHz SFDR SNR 100 dB 72 dB 102 dB 82 dB 102 dB 82 dB 10 mV to 1 V range: >100 dB @ 50 Hz >100 dB @ 1 kHz 83 dB @ 10 kHz Input overvoltage protection 100 kHz SFDR SNR 98 dB 76 dB 99 dB 93 dB 99 dB 93 dB 10 kHz SFDR SNR 97 dB 84 dB 97 dB 96 dB 97 dB 96 dB 2.5 V to 50 V range: 90 dB @ 50 Hz 65 dB @ 1 kHz 55 dB @ 10 kHz 350 VDC Isolation voltage 350 VDC (1 kVRMS with banana connector) Sensor supply ±9 V (±1 %), 12 V (±5 %), 200 mA resettable fuse protected(2) Output voltage ±5 V Output resistance <10 Ohm Maximum output current 5 mA Output protection Short to ground for 10 sec. Power On default settings Software programable Power supply ±9 VDC ±1 % Power consumption 0.8 W without sensor supply Connector -B RS-485 interface -SC -SUBD -LEMO -BNC Yes TEDS Hardware support for TEDS (Transducer Electronic Data Sheet) (SUBD Type only) Supported TEDS chips Supported MSI Error ° 0.001 0.25 0.75 0.8 1 1 1 DC or AC software selectable (1.5 Hz standard, custom on request down to 0.01 Hz) Gain linearity 20 mV 1V 50 V Accuracy ±0.05 % of reading ±40 µV ±0.05 % of reading ±0.05 % of range ±0.08 % of reading ±40 µV ±0.08 % of reading ±0.05 % of range Power Network Analysis Unipolar 10 mV, 50 mV, 200 mV, 1 V, 5 V, 10 V, 50 V Range 10 mV to 50 mV 100 mV to 50 V 10 mV to 50 mV 100 mV to 50 V Power Fault Recording DC accuracy Bipolar HSI-LV 10 mV, 20 mV, 50 mV, 100 mV, 200 mV, 500 mV, 1 V, 2.5 V, 5 V, 10 V, 25 V, 50 V E-Mobility DAQP-LV Input ranges unipolar and bipolar Power Measurement LV Modules DS2406, DS2430A, DS2432, DS2433, DS2431 MSI-V-ACC; MSI-V-RTD MSI-V-ACC; MSI-V-RTD, MSI-V-CH-50 300 kHz exclusively for Bessel filter characteristic 2) Overall current should not exceed DEWE-30-xx maximum power 1) www.dewetron.com/power-measurement 11 High Precision Current Transducers Three to six channels Models from 200 A pk to 1000 A pk High linearity Low offset High bandwidth Low phase error Power supply PM-MCTS Model overview 60 A - 1000 A Specifications Model PM-MCTC 60 PM-MCTS 200 PM-MCTS 400 PM-MCTS 700 PM-MCTS 1000 PM-867-60I PM-867-200I PM-867-400I PM-867-700I PM-867-1000IHF DC, Peak 60 A 200 A 400 A 700 A 1000 A RMS Sinus 40 A 140 A 280 A 500 A 700 A Transducer Primary Current Range Overload Ability Normal Operation 110 % (220 Apk) 110 % (220 Apk) 110 % (440 Apk) 110 % (770 Apk) 110 % (1100 Apk) Short Time (100 mS) 500 % (1000 Apk) 500 % (1000 Apk) 500 % (2000 Apk) 500 % (3500 Apk) 500 % (5000 Apk) DC … 1 MHz DC … 1 MHz DC … 500 kHz DC … 250 kHz DC … 1 MHz 1 ppm/K 1 ppm/K 1 ppm/K 1 ppm/K 1 ppm/K 200 mApk bei 60 Apk 200 mApk bei 200 Apk 200m Apk bei 400 Apk 400 mApk bei 700 Apk 1 Apk bei 1000 Apk Linearity 0.001 % 0.001 % 0.001 % 0.001 % 0.001 % Offset 0.004 % 0.004 % 0.004 % 0.004 % 0.004 % 0.03 %/kHz 0.03 %/kHz 0.06 %/kHz 0.12 %/kHz 0.03 %/kHz 0.01° + 0.045°/kHz 0.01° + 0.045°/kHz 0.01° + 0.06°/kHz 0.01° + 0.12°/kHz 0.01° + 0.045°/kHz PM-MCTS-BR5 PM-MCTS-BR5 PM-MCTS-BR5 PM-MCTS-BR5 PM-MCTS-BR1 Bandwidth Temperature Influence Output Ratio Frequency Influence Angular Influence Shunt Amplitude-/ phase-error depending on frequency 100.000 Amplitude-error depending on range (DC) 10.000 10.000 1.000 1.000 0.100 0.100 Phase-error 0.010 0.010 Amplitude-error 0.001 0 5 Amplitude-error (%) 0.001 50 500 5000 50000 500000 0 20 Frequency (Hz) 12 60 80 100 Range (%) Nominal Current Range Optional Shunts PM-MCTS-BR1 40 Basic Three Channel System Additional Current Channel Optional Shunt 60 A (Transducer PM-867-60I) PM-MCTS-60 PM-CM-60 PM-MCTS-BR5 200 A (Transducer PM-867-200I) PM-MCTS-200 PM-CM-200 PM-MCTS-BR5 400 A (Transducer PM-867-400I) PM-MCTS-400 PM-CM-400 PM-MCTS-BR5 700 A (Transducer PM-867-700I) PM-MCTS-700 PM-CM-700 PM-MCTS-BR5 1000 A (Transducer PM-867-1000IHF) PM-MCTS-1000 PM-CM-1000 PM-MCTS-BR1 - MCTS Rack - 1 internal Power Supply - 3 internal Power Supplies - 1 Transducer Head - 3 Transducer Heads - 1 Connection Cable PM-MCTS-BR2.5 PM-MCTS-BR5 1 A / 1 Ω / 1 W Shunt 800 mA / 2,5 Ω / 1 W 400 mA / 5 Ω / 1 W - 3 Connection Cables 10 m - Power Cord for MCTS 1000 Shunt for MCTS 700 Shunt for MCTS 200/400 Amplitude Accuracy 0.1 % 0.05 % 0.05 % Angular Accuracy 1° at 100 kHz 1° at 100 kHz 1° at 100 kHz Frequency Range 300 kHz / 0.5 dB 300 kHz / 0.5 dB 300 kHz / 0.5 dB - 1 Plug-On Shunt www.de we t ron .com Power Measurement PM-SATURN-5000U-140 2000 A 125 A 5000 A 250 A 2000 A 125 A 5000 A 250 A Bipolar Bipolar ± 1.0 A ± 2.0 A Max. output load 1.5 Ω 0.75 Ω Overload capacity (normal operation) 15 % 15 % 15 % 15 % 500 % (0.1 s) 1000 % (0.1 s) 500 % (0.1 s) 1000 % (0.1 s) Overload capacity (fault) Absolute calibration (23 ºC amb.) ±10 V 5 mA - - < 50 ppm < 50 ppm Linearity error < 2 ppm < 3 ppm < 4 ppm < 5 ppm Gain accuracy < 4 ppm < 6 ppm - - Measuring/ratio stability Vs. temp. Vs. time < 1 ppm/ºC < 1 ppm/month < 1 ppm/ºC < 1 ppm/month ≤ 2 ppm/ºC < 2 ppm/month ≤ 2 ppm/ºC < 2 ppm/month Offset Initial Drift vs. temperature Drift vs. time < 2 ppm (adj.) < 0.5 ppm/ºC < 1 ppm/month < 2 ppm (adj.) < 0.5 ppm/ºC < 1 ppm/month < 2 ppm (adj.) < 0.6 ppm/ºC < 1 ppm/month < 2 ppm (adj.) < 0.6 ppm/ºC < 1 ppm/month < 0.1 ppm < 2 ppm < 4 ppm < 0.1 ppm < 2 ppm < 4 ppm < 0.1 ppm < 2 ppm < 4 ppm < 0.1 ppm < 2 ppm < 4 ppm < 10 µV < 10 µV < 10 µV < 10 µV > 20 A / µS > 20 A / µS > 20 A / µS > 20 A / µS < 1 uS < 1 uS < 1 uS < 1 uS 0 – 300 kHz (<5 % of Ip) 0 – 50 kHz (<5 % of Ip) 0 – 300 kHz (<5 % of Ip) 0 – 50 kHz (<5 % of Ip) Output noise (RMS) DC - 10 Hz DC - 10 kHz DC - 50 kHz Noise feedback to main conductor DC – 100 kHz (RMS) Dynamic response correctly followed to 0.1% Delay time Bandwidth (3 dB, small signal 0.5%) Test voltages 5 KV ACRMS 5 KV ACRMS Operating temperature Electronics Measuring heads 10 - 40 ºC 0 - 55 ºC 10 - 40 ºC 0 - 55 ºC Supply voltages Supply current/power Busbar free zone to be within linearity spec. Cylinder shape (diameter x length) Cable length Standard Optional Electronics Dimension Weight Transducer heads Dimension Weight 100 / 115 / 230 VAC, +/-10 % -50/60 Hz 100 / 115 / 230 VAC, +/-10 % - 50/60 Hz 50 VA 100 VA 50 VA 100 VA ø 220 x 220 mm (8.6 x 8.6 in.) T.B.D ø 220 x 220 mm (8.6 x 8.6 in.) T.B.D 2.5 m 30 m 2.5 m 30 m 2.5 m 30 m 2.5 m 30 m Rack mount 483 x 89 x 371 mm (19 x 3.5 x 14.6 in.) 5 kg (11.1 lb.) With ø50 hole 165 x 200 x 50 mm (6.5 x 7.9 x 2 in.) 3.5 kg (7.72 lb.) With ø150 hole 350 x 350 x 92 mm (13.8 x 13.8 x 3.6 in.) 17 kg (30.86 lb.) Rack mount 483 x 89 x 371 mm (19 x 3.5 x 14.6 in.) 5 kg (11.1 lb.) With ø50 hole 165 x 200 x 50 mm (6.5 x 7.9 x 2 in.) 3.5 kg (7.72 lb.) With ø150 hole 350 x 350 x 92 mm (13.8 x 13.8 x 3.6 in.) 17 kg (30.86 lb.) 2 models of current transducer systems 2000 A E-Mobility PM-SATURN-2000U Polarity Nom. output range Voltage Output PM-SATURN-5000I-140 Power Network Analysis Primary Nominal current (Ipn) Programmable in steps of Current Output PM-SATURN-2000IHF Power Fault Recording ULTRASTAB SATURN Power Measurement 2000 A - 5000 A 5000 A www.dewetron.com/power-measurement 13 Shunts & Current Clamps Shunts DAQ-SHUNT-3 DAQ-SHUNT-4 DAQ-SHUNT-5 Application Power grid analysis Power grid analysis Power grid analysis Type of current AC + DC AC + DC AC + DC Impedance 0.1 Ohm 0.1 Ohm 0.1 Ohm Accuracy 0.1 % 0.1 % 0.1 % Temperature drift <±10ppm/K (20 °C to 60 °C) <±10ppm/K (20 °C to 60 °C) <±10ppm/K (20 °C to 60 °C) Connectors Input: 2 m cable with banana plugs Output: 30 cm cable with banana plugs Input: built-in banana jacks Output: 30 cm cable with banana plugs Input: built-in banana jacks Output: built-in banana jacks PNA-CLAMP-150-DC Current range 300 ADC or ACpeak Cont. current measurement 150 ADC or ACRMS Overload capability 500 ADC (for 1 min) Power supply OPTION for * DEWE-2600/2602: * For others: Connector ±15 V ±10 %, external 0.5U-CLAMP-DC-POWER-4/-8 CLAMP-DC-POWER-4/-8 Output sensitivity 20 mV/A (w.r.t. 0 V) Accuracy (+ 25 °C) ±1 % of reading ±2 mA Resolution ±1 mA Frequency Range DC to 100 kHz (-1 dB) Max. conductor size 32 mm diameter Jaw status 0 V (Lo) / +15 V (Hi) Relative zero correction Auto zero at switch on SUB D(TED); (SUBD modules required for TEDS support) Supply (LEMO; incl. jaws status); Adapter SUB D-banana included PNA-CLAMP-1000-DC AC input range 0.2 to 100 A selectable 0.5 to 1000 A DC input range 0.4 to 150 A selectable 0.5 to 1400 A Output 10 mV/A % accuracy 0.5 to 20 A ≤ 1 % +50 mV 0.5 to 100 A 1.5 % +1 mV 20 to 100 A 1.5 % 100 to 800 A 2.5 % 100 to 150 ADC 2.5 % 800 to 1000 A 4% 1000 to 1400 A 4% 1 mV/A Bandwidth DC to 10 kHz at -3 dB Phase shift 10 to 20 A < 3° 10 to 200 A < 2° 20 to 100 A < 2° 20 to 1000 A < 1.5° Working temperature -10° to +55°C Temperature drift Connector type Safty banana sockets (4 mm) ≤ 0.3 % of output signal per 10K Fits to following systems All system with DAQ series amplifiers Flexible current loop with selectable range (PNA-A100-300-45) Application Power grid analysis, AC applications AC input range 0.5 to 300 A Output 10 mV/A % accuracy Phase shift (45 to 65 Hz) Temperature drift 0.5 to 3000 A selectable 1 mV/A 5 to 300 A <= 1 % 5 to 300 A <= 1 % 0.5 to 300 A <= 0.7° 0.5 to 300 A <= 0.7° <±50 ppm/K (-10 °C to 55 °C) PNA-FLEX-MINI-300-70 (PNA-A100-300-80) AC input range 0.5 to 300 A Output 10 mV/A 0.5 to 3000 A % accuracy 0.5 to 5 A not specified 0.5 to 5 A not specified 5 to 300 A ≤1% 5 to 3000 A ≤1% selectable 1 mV/A Bandwidth 10 Hz ... 20 kHz Phase shift 0.5 to 5 A ≤ 0.7° 0.5 to 5 A ≤ 0.7° 5 to 300 A ≤ 0.7° 5 to 3000 A ≤ 0.7° Working temperature -10° to +55°C (maximum temperature for sensor is 90°C) Temperature drift ≤ 0.5 % of output signal per 10K Connector type C16-1, 6+PE Length of coil 69 cm Fits to following systems DEWE-5xx-PNA DEWE-5xx-PNA-1MS 14 www.de we t ron .co m Power Measurement Voltage Error EV [%] Current Error EC [%] Phase Error EPhi [°] Cos Error EcosPhi [%] Sin Error EsinPhi [%] Power ES [%] Active Power EP [%] Reactive Power EQ [%] Power Measurement Power Errors U=100 V; voltage range=200 V; no voltage transducer (VT) I=10 A; current range=40 A; current transducer=PM-MCTS-200; shunt=PM-BR5 F=50 Hz, filter=300000 kHz Phi=30° Current Error EC [%] Phase Error EPhi [°] Cos Error EcosPhi [%] Sin Error EsinPhi [%] Power ES [%] 0,15 % Active Power EP [%] 0,15 % Reactive Power EQ [%] 0,15 % 40 10 200 10 Power Network Analysis EV [%] Power Fault Recording Voltage Error E-Mobility Example: ftp://ftp.dewetron.com/public/power/dewe power accuracy.xls www.dewetron.com/power-measurement 15 Accuracy Example MCTS 200 Voltage [V]: 100 Current module: DAQP-LV Current [A]: 140 A Range: 1V Frequency [Hz]:50 Filter: 300 kHz Phi [°]: Shunt: PM-BR5 30 Current Transducer: PM-MCTS-200 Voltage module: DAQP-HV-S3 Range: 200 V Filter: 700 kHz Maximum P-error and Q, S as function of Phi Maximum P-error as function of current for different cosPhi Maximum P-error as function of frequency with cariable current/max current (f max = 50 000 Hz) 16 www.de we t ron .co m Voltage [V]: 100 Current module: DAQP-LA Current [A]: 5A Range: 10 A Filter: 300 kHz Voltage module: DAQP-HV-S3 Range: 200 V Filter: 700 kHz Frequency [Hz]:50 Phi [°]: Power Measurement Accuracy Example DAQP-LA 30 E-Mobility Maximum P-error and Q, S as function of Phi Maximum P-error as function of frequency with cariable current/max current (f max = 50 000 Hz) www.dewetron.com/power-measurement Power Fault Recording Power Network Analysis Maximum P-error as function of current for different cosPhi 17 Measuring on Electrical Machines Application Example for Power Measurement Introduction Moment M Hardly a motion that is not carried out by an electrical drive, hardly no drive motor with any kind of electrical machine, hardly an electric motor that is not operated by a frequency converter. Efficient technologies are required, best efficiency factors are demanded and highly accurate measurements are therefore necessary. Such drives cause an increased adoption of power electronics and all Motor implications connected with Operating that such as circuit feedback, point broadband frequency spectra of current and voltage, pulsefrequency modulated signals ine g En and fast slew rates of the voltage impulses. Speed frequency n Task Modern frequency converters use various algorithms in order to simulate voltage and currents. They all have in common that electric switches (IGBTs) are used that have steep rising edges (3 kV/µs) and high pulse frequencies (up to 40 kHz). Broadband measurements with high dynamics for voltage and currents are, in this case, necessary to fulfill the following tasks: Exact identification of active power Identification of reactive power, also in case of high phase angles Identification of power loss Efficiency factor (also mechanical parameters) Especially for the identification of efficiency factors several power measurements are required at the same time: 3~ grid, 3~ motor, 1~ intermediate circuit, rotation speed and torsional moment are not uncommon. Measuring these parameters synchronously and accurately is the big challenge. Solution DEWETRON‘s solutions for this application are DEWE-PM instruments with the DEWE-ORION cards 1616-500 or 0816-1000 and DAQP-HV-S3 modules for measuring voltage and DAQP-LV modules for measuring current. 18 www.de we t ron .co m Electrical Machines Beside the standard functions of power measurement instruments, several additional measurements are required to be able to carry out a complete analysis of the motors: ± 1400 Vpeak 2 MHz bandwidth 1 MS/s sampling rate Typical accuracy of < 0,05 % Individual number of channels Several power modules in one instrument Every power module can have its individual frequency (software PLL) DC, 16,7 Hz, 50 Hz, 60 Hz, 400 Hz, 800 Hz, variable frequencies Synchronous analysis of harmonics and frequency Mathematical library (e.g. calculation of various efficiency factors) Power Measurement 4 kV electric strength Video recording in parallel System perturbation for frequency converters according to EN61000-3-2 Power curve and characteristic curve of revolutions per minute (rpm) and torsional moment Electrical characteristics such as harmonics, fundamental power, reactive power, switching operation, run-up Analysis as regards grid, motor, intermediate circuit and – mechanically – the drive shaft (Welle) Voltages up to 1000 V RMS directly measurable (DAQP-HV module) Analyses of run-up with data storage and processing Mechanical parameters such as rotation speed and vibration of the motor and the shaft respectively E-Mobility DC-measurements in the frequency converter Acoustic emission (sound power level, frequency spectrum) Software The option power for the DEWESoft is a very high-capacity tool for the calculation of power and other similar parameters. Due to the calibration in the frequency range a high accuracy of the calculated values is reached. With the help of this unique technology amplitudes and phase can be corrected in the frequency domain. All internal correction curves were incorporated in the software and the sensor data base includes all correction curves for current and voltage converter or whatever sensor is used. Beside the precise calibration the frequency calculation is a central feature of the software. 50 and 60 Hz are a must – for us also DC and variable frequencies are, of course, a must. Due to the high sampling rate (up to 1MS/s) and the modules there is no limitation to the recording of pulse-width modulated signals (up to 700 kHz electrical bandwidth) and the calculation of active, reactive and total power, power factor, etc. Some Details Many Power Modules Power Fault Recording Only one DEWETRON measurement instrument is needed to carry out all these measurements. Based on the new DEWE-PM-series it is quite easy to define the appropriate hardware solution for you. With up to 16 input channels several power modules can be used in order to e.g. synchronously measure parameters regarding grid, motor and intermediate circuit. Additionally, revolutions per minute, torsional moment, temperature and acoustic level measurement can be carried out. The enormous range of DEWETRON modules and sensors makes synchronous measurement and evaluation of parameters possible. Great importance was attached to the development of these instruments as regards interference resistance. The frequency converter thus benefits from the strong common-mode rejection voltage. Another contribution to the interference resistance is the high electric strength. Power Network Analysis Hardware With the DEWESoft power module an arbitrary number of power modules can be measured at the same time. Motors e.g. Ugrid/UDC/Umotor www.dewetron.com/power-measurement 19 FFT– Harmonics Analysis U, ULine, I, P, cos and Q Individual setup of number of harmonics including DC (example: sampling rate 20 kHz = max. 200 harmonics @ 50 Hz) Values adjusted to the actually measured frequency of fundamental oscillation Frequency analysis up to 500 kHz Remote Control With the help of the remote control the instruments can be configured from afar – for example while being in the office. Plug-in OPC The OPC-plug-in for DEWESoft provides the integration of the measurement instrument in the scada system and thus the implementation of automated test benches. OPC is a standardized protocol for the transmission of data from several measurement instruments (OPC server) to one central computer (OPC client). Acoustics/Acoustic Level Measurement Accurate and high-resolution acoustic level measurements according to IEC 60651, 60804, 61672. With its userfriendly interface DEWESoft brings the sophisticated acoustic level measurement/acoustic analysis to the user. Customers Producers of motors Producers of frequency converters Users of drive systems Plant engineering Testing institutes Universities and research centers 20 www.de we t ron .co m Transformers Measuring on Transformers Introduction The general opinion that low-loss transformers are not a current topic in times of current regulation and thus reasonable energy costs has to be qualified. Low-loss transformers also contribute to the achievement of the Kyoto-objectives as regards the reduction of greenhouse gas emission. The power measurement of transformers, especially the identification of power loss, must be very precise indeed. Precise measurement at a phase angle of 90°, that is mere reactive power, is one of the most important premises. Task When we talk about transformers we think of the precise identification of losses, short-circuits and idling losses. This means that we need a high accuracy for U, I and P at 50/60 Hz and in small power factors. E-Mobility Power Measurement Application Example for Power Measurement Hardware Based on the new DEWE-PM series it is quite easy to define the adequate hardware solution. With up to 16 input channels several power modules can be used in order to e.g. measure 3-phase input and output lines at the same time. With the help of the high number of channels (basic instrument with 16 channels, upgrade rack with another 16 channels) also multi-coil transformers can be identified during one measurement cycle. Additionally, temperature and acoustic/noise level can be measured. Power Fault Recording Software/Calibration Power Network Analysis Solution The option power for DEWESoft is a high-performance tool for the calculation of power and other related parameters. The accuracy of the calculated values is achieved by the calibration in the frequency range and the special calibration of the angle error. Using this unique technology, amplitude and phasing in the frequency range can be corrected. All internal correction curves are considered by this software and the sensor data base includes all corrections for current-, voltage converter or any sensor used. A correction of power measurement is also possible according to IEC 60076-1. www.dewetron.com/power-measurement 21 Some Details Various Power Modules With the DEWESoft power module an arbitrary number of power lines can be measured simultaneously. e.g. transformer: Uprim / Usek / Ueb / U FFT– Harmonics Analysis U, ULine, I, P, cos and Q Individual setup of the number of harmonics including DC (example: sampling rate 20 kHz = max. 200 harmonics @ 50 Hz) Values adjusted to the actual power frequency Vector Diagram The „transparency function“ makes the direct optical comparison of phases possible (e.g. input and output of a transformer). Moreover, the values can be calculated analytically with the help of mathematical functions. Plugin-OPC With the OPC-Plugin for DEWESoft the integration in the control technology can be carried out and automated test benches can be put into practice. OPC is a standardized protocol for data transfer from several measurement instruments (OPC server) to one central computer (OPC client). Acoustic/Noise Level Measurement Accurate and high-resolution noise level measurements following IEC 60651, 60804, 61672. DEWESoft and its user-friendly interface convince and bring the sophisticated noise-/acoustic analysis to the customer. Customers All producers of transformers (ranging from power transformers to distribution transformers) Companies responsible for maintenance and energy supply companies Energy supply companies 22 www.de we t ron .com 400 Hz (800 Hz) Machines Measuring on 400 Hz (800 Hz) Machines Introduction Beside the typical grid frequencies of 50 Hz and 60 Hz, 400 Hz and 800 Hz are applied increasingly. The reason for that is the low installation size of generators and motors respectively with the same power. We mainly talk about isolated networks as they are used in on-board power supplies on ships, airplanes or in military applications. Task Power Measurement Application Example for Power Measurement Harmonics, voltage fluctuations and transients are a current topic within these fast grids as well as within their slower siblings. However, the difference lies in the necessary bandwidth or sampling rate of the measurement instruments. If you want to analyse 50 harmonics you need a sampling rate of 40 kHz in 400 Hz grids and a sampling rate of even 80 kHz per channel in 800 Hz grids. Transients should even be recorded with 500 kHz or more. E-Mobility Harmonics measurement Power measurement Determination of power factor Voltage fluctuation Transients Efficiency factor Solution DEWETRON‘s solutions for this application are DEWE-PM-instruments with the DEWE-ORION cards 1616-500 or 0816-1000 and DAQP-HV-S3 modules for measuring voltage and DAQP-LV modules for measuring current. ± 1400 Vpeak 4 kV electric strength 2 MHz bandwidth 1 MS/s sampling rate Typical accuracy of < 0,05 % Individual number of channels Power Network Analysis The identification of efficiency factors, especially at low workload and big phase angles, gives information on the overall efficiency. Especially nowadays when energy optimisation is in the focus of interest this is an absolutely important tool. Synchronous analysis of harmonics and frequency Mathematical library (e.g. calculation of various efficiency factors) Electromagnetic influences Power curve and revolutions per minute / torque curve Electrical characteristics such as harmonics, fundamental power, reactive power, switching operation, run-up Hardware DEWETRON offers several instruments that are suitable for measurements on 400 Hz (800 Hz) machines. The basis is always a basic instrument with a rack for DAQP module. Special focus was put on the stability and capacity of the instruments independently from the fact that a 19’’ instrument for a fixed installation or a portable instrument is used. www.dewetron.com/power-measurement Power Fault Recording Several power modules in one instrument 23 Software The identification of transients, the calculation of power and the measurement of harmonics are only a few of the numerous functions of the measurement software DEWESoft with its option POWER. Unbalances, flicker, frequency and revolution per minute are some more that are nowadays necessary for the power analysis. Besides, it is very important to reach high sampling rates that can be processed by the software: 500 kHz for the calculation of power are a must-have for controlled drive systems. Some Details Many Power Modules With the DEWESoft power module an arbitrary number of power modules can be measured at the same time. Motors e.g. Ugrid / U DC / Umotor FFT– Harmonics Analysis U, ULine, I, P, cos and Q Individual setup of number of harmonics including DC (Example: sampling rate 80 kHz = max. 50 harmonics @ 800 Hz) Values adjusted to the actually measured frequency of fundamental oscillation Frequency analysis up to 500 kHz Customers Producers of electrical engines Producers of frequency converters Aircraft industry/on-board power supply Shipbuilding/on-board power supply Military service/on-board power supply Test institutes DEWETRON GmbH • Parkring 4 • A-8074 Graz-Grambach • Tel (0043) 316 3070 0 • Fax (0043) 316 3070 90 • sales@dewetron.com 24 www.de we t ron .co m

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