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日本YOKOGAWA WT2030數(shù)字功率計(jì)電力測量儀，0.03級，500KHz/600V/30A，RS232接口，直流和四線測量
詳細(xì)介紹
武漢詠繹
日本YOKOGAWA WT2030數(shù)字功率計(jì)特點(diǎn)
- 額定值（范圍）
電壓：10/15/30/60/100/150/300/600 V
電流
直接輸入：1/2/5/10/20/30 A
外附分流器輸入：50/100/200 mV - 頻率范圍：DC，2Hz至500 kHz（但對功率而言,zui高300 kHz）
- 基本精度（45Hz≤頻率f≤66Hz）
電壓/電流：±（讀數(shù)的0.03%＋量程的0.03%）
功率：±（讀數(shù)的0.04%＋量程0.04%）
功率因數(shù)效應(yīng)（在cosφ＝0時）：加量程的±0.1% - 外型尺寸：約426（寬）×132（高）×400（深）mm
- 重量：約13公斤（ 3單元型），約10公斤（1單元型）
- 連接方法和對應(yīng)型號
| 產(chǎn)品代碼 | 253101 | 253102 | 253103 |
| 單相2線制 | 可用 | 可用 | 可用 |
| 單相3線制 | 1 | 可用 | 可用 |
| 3相3線制 （2電壓,2電流） | 1 | 1 | 可用 |
| 3相3線制 （3電壓,3電流） | 1 | 1 | 可用 |
| 3相4線制 | 1 | 1 | 可用 |
日本YOKOGAWA WT2030數(shù)字功率計(jì)技術(shù)指標(biāo)
| Input | |||||||
| Item | VoltageV | CurrentA | |||||
| Input circuit type | Floatinginput | ||||||
| Resistive voltage divider | Shuntinput | ||||||
| Rated inputs（range rms） | 10/15/30/60/150/300/600V | Directinput 1/2/5/10/20/30A External shunt input: Approx.100 kΩ | |||||
| Input impedance | Inputresistance Approx. 2 MΩ Input capacitance Approx.15 pF | Directinput: Approx.6 mΩ +approx.0.07 μH External shunt input: Approx:100kΩ | |||||
| Frequency range | DCand 2 Hz to 500 Hz | ||||||
| Instantaneous maximum allowable input for 1s | Thepeak voltage is 2500V, or the RMS value is 3 times the range, whichever is less. | The peak current is 90A,orthe RMS value is 50A,whichever is less. External input:The peak value is 20times the range or less. | |||||
| Continuousmaximum allowable input | The peak voltageis 1400V, or the RMS value is 2.5 times the range, whichever is less. | Thepeak current is 60A,or the RMS value is 35A,whichever is less. External input:Thepeak value is 10 times the range or less. | |||||
| Continuousmaximum common mode voltage | 600 Vrms（whenthe protective cover for the output connector is used）CATII 400 Vrms（whenthe protective cover for the output connector is removed）CATII | ||||||
| Common mode rejection ratio at 600V rms between input terminals and case （50/60 Hz input） | Voltage input terminals shorted,current input terminals opened:Better than -80 dB（±0.01% of rdg or less） | ||||||
| Reference value: 200 KHz max ±（0.18×f）/（Range rating）% of rdg or less（Unit of f:KHz） | Referencevalue: 200 KHz max ±（0.03 ×f）/（Range rating））% of rdg or less（Unit off:KHz） | ||||||
| Input terminals | Bindingposts | Large binding posts External shuntinput:BNC | |||||
| A/D converter | Simultaneousconversion of voltage and current input Resolution:16 bits Maximum:conversion rate:104 KHz | ||||||
| Overloadinput detection
| Alarm lamp lightsat approx.350% of the input range（approx.700% of range when crest factoris 6） | ||||||
| Range switching | Therange can be switched manually,automatically,or by communication control foreach element. | ||||||
| Auto range switching | Range up:When the measuredvalue exceeds 110% of the rated value.or when the peak value exceeds 350%of the peak value. Range down:When the measured value becomes less than30% of the rated value. | ||||||
| Measurement mode Switching | The mode can be setfor each element and also for each voltage and current measurement circuit. | ||||||
| Display Functions | |||||||
| Display: Display contents: | 7-segment LED （light emittingdiode） 4 displays | ||||||
| DISPLAY | Displaycontents | Display resolution | |||||
| A | V,A,W（eachelement） | V,A,W:50000 Wh,Ah:500000 Hz:199999 | |||||
| B | V,A,W（eachelement） | ||||||
| C | V,A,W,VA,var,PF,deg, Vpk（eachelement） | ||||||
| D | V,A,W,Apk,THD,VHz,AHz,Wh ,Ah（eachelement）,η（efficiency） | ||||||
| Unit: Display update rate: Peak hold function: PEAK: ALL: Response time: | m,k,M,V,A,W,VA,var,pk,Hz,h,deg,% Select from 0.25 sec（FAST）,0.5 sec（MID） and 2.0 sec （SLOW）. Selectable tohold item as follows Vpk and Apk can be held at maximum value Measurementvalue of V,A,W,VA,var,Vpk,Apk can be held at maximum value. Maximum of twicethe display update rate（The time taken for the display to fall within is OFF andan abrupt change is made from 0 to * of the range, of from 100 to 0% of therange） | ||||||
| Display scaling function | |||||||
| Significant digits: Setting range: Set values: | Selected automatically accordingto the significant digits in the voltage and current range. 0.0001 to 10000 "DISPLAY A":Not displayed "DISPLAY B":PT ratio "DISPLAYC":CT ratio "DISPLAY D":Power scaling factor | ||||||
| Display averaging function | |||||||
| Method: MATH function Algorithm: | Oneof the following two types can be selected. Exponential averaging Movingaveraging For exponential averaging,the attenuation Constant can be selected,andfor moving averaging,the average number,N,can be set to 8,16,32,64,128 or 256. For harmonic mark measurements for exponential avaraging the attenuator Constant is 5.625 when the frequency of the PLL sync source is 55 Hz or more butless than 66 Hz,and is 4.085 in other cases. （when data length = 8192） Display D, when selecting the efficiency fanction η,will show the efficiency.Inaddition it is possible to show the result of Display A +,-,/ or ×Display B onDisplay D. | ||||||
| Accuracy | |||||||
| Item | Voltage/current | Power | |||||
| Condi- tions Humidity 30 to 75% RH Supply voltage Specified V±5% Inputwaveform Sing wave In-phase voltage 0V Power factor CosΦ=1 Line filter OFF 6-month accuracy The unit offin theac- curacy calcul-ation formula is KHz | Temper-ature 23 ± 3℃ except 600V, 100 /20A/ 30A rang | 45Hz≤f≤66 Hz ±（0.03% of rdg+0.03% of rng） | 45Hz≤f≤66 Hz ±（0.04% of rdg+0.04% of rng） | ||||
| Temper-ature 23 ± 5℃ | DC:±（0.04% of rdg+0.04%of rng） 2 Hz≤f<30 Hz ±（0.1% of rdg+0.2% of rng） 30Hz≤f≤1K Hz ±（0.03% of rdg+0.05% of rng） 1K Hz ±（0.02% of rdg+0.1%of rng） 10KHz ±[0.018% ×（f-10）% of rdg+0.3% of rng] 50KHz ±[0.03% ×（f-50）% of rdg+1.0% of rng] 100KHz ±[0.035% ×（f-100）% of rdg+2.5% of rng] 2Hz ≤f<10 Hz and more than200 KHz is the design value. If the display update rate is 10 Hz or more →MID If the display update is 2 Hz or more →SLOW | DC:±（0.08%of rdg+0.12% of rng） 2 Hz≤f<30 Hz ±（0.2% of rdg+0.5% of rng） 30Hz≤f≤1K Hz ±（0.05% of rdg+0.05% of rng） 1K Hz ±（0.05%of rdg+0.2% of rng） 10KHz ±[0.045% ×（f-10）% of rdg+0.3%of rng] 50KHz ±[0.05% ×（f-50）% of rdg+2.5% of rng] 100KHz ±[0.11% ×（f-100）% of rdg+5.0% of rng] 2Hz ≤f<10 Hz and more than200 KHz is the design value. If the display update rate is 10 Hz or more →MID If the display update is 2 Hz or more →SLOW | |||||
| Effectof power factor | - | whencosΦ=0 45 Hz≤f≤66Hz Add ±0.1% of rng 66 Hz Add ±0.15%of rng Reference data:300 KHz max Add（0.15 + 0.15×f）of rng Indicationerror when 1>cosΦ>0 Add a value equal to the product of the effecton cosΦ=0 and tanΦ（ Φ is the phase angle between the voltage and curent）. | |||||
| Effective input range | Between10 and 110% of the rated input value （The accuracy when the input is between110 and 130% is 1.5 times the read value error.） | ||||||
| Accuracyat CF set to 6 | 1.5 times the range errorof a crest factor of 3 （accuracy when the above temperature is 23±5℃ ） | ||||||
| Temperature coefficient | ±0.02%of rag/℃ between 5 and 18℃ and between 28 and 40℃ | ||||||
| Dataupdate rate | 0.25s,0.5s,2.0s | ||||||
| Line filter function | Measurementcan be performed with low pass filters inserted into the input circult andthe frequency measurement circuit. A cutoff frequency （fc）can be selected from 500 Hz and 5.5 Hz. | ||||||
| Accuracywhen the line filter is ON | For fc/10 orless: Add±1%of rng when the filter is OFF. | Forfc/10 or less:Add ±2% of rng when the filter is OFF. | |||||
| One year's accuracy | Readingerror for 6 months multiplied by 1.5 | ||||||
| Detectionrange of leading phase/lag- ging phase | ±5deg（20 Hz to 10 KHz）for sinusoidal voltage and current inputs,crest factor of3,and at least 50% of range rating | ||||||
| Measeurementlower limit frequency | Display update rate:Measurementlower limit frequency 250 ms 20 Hz or higher 500 ms 10 Hz or higher 2 sec 2 Hz or higher | ||||||
| FrequencyMeasurement Function | |||||||
| Measurementinput: Measurement method: Measurement frequency range: Maximumdisplay: Accuracy: |
Reciprocal method Depends upon the display update rate as shown below（autorange）. 250 ms: 2k/20k/200k/1000 kHz 500 ms: 200/2 k/20 k/200k/500 kHz 25: 20/200/2 k/20k/100 kHz 199999 250 ms: 18.00 Hz 500 ms: 9.000 Hz 25: 18000 Hz ±0.05% of rdg | ||||||
| Integration Funtions | |||||||
| Maximumdisplay: Frequecy range: Modes: Timer: Display: Output: Count Overflow: Real Time Counting: Accuracy: Timer accuracy: Remote Control: | 500000 According tothe displayed value,the resolution will changed. DC to 50 KHz Standardintegration Mode （timer mode） Continuous integration Mode （repeat mode） Manual Integration Mode When the timer is set ,Integration will be stoppedauto matically. Setting range:000h:00min to 999h:59 min（000h:00min will beshown when manual integration mode is selected） Display A show:Elapsed time Display B/C show: Watt Display D show:Watt,Wh,Ah,Hz For the output ofthe printer,communication and D/A,fourteen free selectable items fromthe above can be set.However,only the measured data of the frequency which has been previously set will be output. If integration count overflows the maximumdisplayable value,integration stops and the elapsed time is held on the display. The integration time can be controlled REAL TIME. ±（display accuracy + 0.05%of rdg） ±0.005% Start,stop and reset can be remoy controlled byexternal contact signals. | ||||||
| CommunicationFunctions | |||||||
| Communicaton Specifications（GP-IB& RS-232-C） | |||||||
| GP-IB | |||||||
| Electrical and mechanical specifications Functional specifications: Protocol: Code used: Address: RS-232-C Transmission mode: Baud Rate: | EEE St'd488-1978 UIS（1901-1987） SH1,AH1,T5,L4,SR1,RL1,PRO,DC1,DT1,C0 IEEE St'd488.2-1987 ISO（ASCII） code 0 to 30 talker/listener addresses can beset. Start Stop Synchronization 75,150,300,600,1200,2400,4800,9600bps | ||||||
| External Control | |||||||
| Signal: Input: | EXT-HOLD,EXT-TRIG,EXT-PRINT,EXT-START,EXT-STOP,EXT-RESET,INTEG-BUSY,FLICKER-BUSY TTL level negative pulses | ||||||
| Printer（optional） | |||||||
| Contents of printing For normal measurement: For harmonic analysis function （optional）: For ficker meas- urement function （optional）: Printing method: | Printingof numerical values-All items （Can be set freely,however is set in commonwith the communication output）. Printing of numerical values-V,A,W,VA,var,PF,degBar graphs-V,A,W,deg At end of 1 observation period-dc,dmax, d（t）200 ms,Pstand evaluation criteria,evaluation results and total accuracy function（CPF）graphfor each parameter At end of all observation periods-Plt, Overall evaluation Thermal line dot printing | ||||||
| D/AOutput（optional） | |||||||
| Number of outputs: Resolution: Accuracy: Output voltage: Maximum output current: Temperature coefficient: Update rate: | 14items（can be set for each channel） 12 bits ±（display accuracy +0.2% ofrng） ±5VFS with respect to each rated value（max.approx±7.5V） ±1 mA ±0.05% of rng/℃ Same as update rate of main unit | ||||||
| HarmonicAnalysis Function（optional） | |||||||
| Type: Measurement frequency: Display resolution: Harmonics to be measured: Analysis items: Sampling rate/window width/analysis order: | PLLsync method The fundamental frequency range is 10 Hz to 440 Hz. 50000 Steady-state and fluctuating harmonics Each harmonic level of V,A,W and deg,RMSvoltage,RMS current,active power,VA,var,PF and deg of furelamental wave,V,A,Wharmonic distortion,each harmonic content,fundamental wave voltage,current,phaseangle,phase angle between each harmonic and the fundamental wave Dependson the input frequency as follows when the PLL sync method is used | ||||||
| Undamental frequency | Sampling Freq-uency （Hz） | Window Width with Respect |to FFT Data length （Num- ber Fundamental） | Maximum Analysis Order | ||||
| 8192 | 4096 | 2048 | 1024 | 512 | |||
| 10≤ f<20 | f×2048 | 4 | 2 | 1 | - | - | 50（50） |
| 20≤ f<40 | f×1024 | 8 | 4 | 2 | 1 | - | 50（50） |
| 40≤ f<70 | f×512 | 16 | 8 | 4 | 2 | 1 | 50（50） |
| 70≤ f<130 | f×256 | 32 | 16 | 8 | 4 | 2 | 50（25） |
| 130≤ f<250 | f×128 | 64 | 32 | 16 | 8 | 4 | 50（13） |
| 250≤ f≤440 | f×64 | 128 | 64 | 32 | 16 | 8 | 25（9） |
| FFT processing word length: Windowfunction: Data acquisition operation: Averaging: Display update period: Anti-aliasing filter: Accuracy: | 32bits Rectangular Continuously,no dead time Exponential average fortime constant of 1.5 seconds （when the fundamental frequency is 50/60 Hz） 250,500 ms/2s At fundamental frequency of 50/60 Hz,the aliasing up to the40 the analysis order is -50 dB or better（when the line filter is ON andthe cutofffrequency is 5.5 KHz）. As follows when thecrest factor=3 When the anti-aliasingfilter is ON When the anti-aliasing filter is OFF Same as for normal measurement（Temperature:23±5℃）
| ||||||
| FlickerMeasurement（optional） | |||||||
| Measurementitems: Flicker scale: 1 observation term: Number ofobs- ervationterm: Display update: Steady-state condition: Printer output: Accuracy: Pst,Plt: | dc Relativesteady-state voltage change
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