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Power meter

IT9121 Series User Manual

Model: IT9121

Version:V1.4

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Содержание IT9121 Series

Страница 1: ...Power meter IT9121 Series User Manual Model IT9121 Version V1 4...

Страница 2: ...ing the materials in this document that conflict with these terms the warranty terms in the separate agreement shall prevail Technology Licenses The hardware and or software described herein are furni...

Страница 3: ...d other taxes shall be on the account of customer Limitation of Warranty This Warranty will be rendered invalid if the product is Damaged resulting from customer wired circuits or customer supplied pa...

Страница 4: ...connecting to the I O terminal Do not use the instrument if the detachable cover is removed or loosen Do not connect the instrument to any cable or terminal block before self testing To prevent the p...

Страница 5: ...us or toxic substances are expected to leak or deteriorate during normal use The expected useful life of the product is 10 years The product can be used safely during the 10 year Environment Friendly...

Страница 6: ...4 2 2008 EN 61000 4 2 2009 IEC 61000 4 3 2006 A1 2007 A2 2010 EN 61000 4 3 2006 A1 2008 A2 2010 IEC 61000 4 4 2004 A1 2010 EN 61000 4 4 2004 A1 2010 IEC 61000 4 5 2005 EN 61000 4 5 2006 IEC 61000 4 6...

Страница 7: ...Function 12 Chapter3 Basic Measurement Functions 15 3 1 Basic Concepts 15 3 2 Setting of Measurement Function and Interface Display 16 Chapter4 Waveform Display Function 18 4 1 Basic Concepts 18 4 2...

Страница 8: ...IT9121 User s Manual Copyright Itech Electronics Co Ltd vi 8 9 Fundamental Frequency 48 8 10 Accuracy 48 8 11 Oscilloscope Function 49 8 12 Interface Specification 49...

Страница 9: ...function and can measure 50 order harmonic components at most With the interface for USB peripherals the user can store the interface in the external storage medium With many powerful integral functi...

Страница 10: ...to current measurement data will be displayed Harmonic Measurement key When this key is pressed the harmonic measurement results and the menu of harmonic measurement parameter configuration will be d...

Страница 11: ...nges Knob key used for setting the value indicated by the cursor selecting the voltage and current range adjusting the waveform etc 1 4 Introduction of Menu Function Press this key to enter the system...

Страница 12: ...00mV 1V 2V CF 6 25 mV 50mV 100mV 250mV 0 5V 1V Rate V A Conversion ratio of external current sensor 1 Rate mV A Conversion ratio of external current sensor 2 U_Range Voltage range I_Range Current rang...

Страница 13: ...measurement interface as an example Basic measurement interface Select the Meter button and the initial interface of basic measurement as shown below will appear 1 6 Introduction of Interface Symbols...

Страница 14: ...Diagram of Rear Panel of IT9121 Power Meter 1 GPIB interface 2 Ethernet interface 3 USB Interface 4 RS232 interface 5 External synchronization signal interface 6 Power interface 7 External sensor int...

Страница 15: ...he selected range is effective for different measurement modes such as waveform display integral measurement and harmonic measurement Operation steps 1 In the Meter interface Press the soft key corres...

Страница 16: ...easurement range according to the level of the effective value When the voltage or current signal is input into the input unit there are two types of range fixed and automatic Fixed range Select the r...

Страница 17: ...crest factor is 6 The value Upk or Ipk of the input signal is less than 600 of the range at the following level NOTE The selected automatic range may change when the input waveform is a pulse waveform...

Страница 18: ...e used as the synchronization source can be set in each unit for synchronization with the zero point of that input signal The overall interval of the signal voltage current or data updating cycle can...

Страница 19: ...status of theline filter When ON is selected the line filter is turned on When OFF is selected the line filter is turned off Crest Factor Set the crest factor CF3 CF6 Update Rate Data Updating Rate Se...

Страница 20: ...asured signal is larger than the crest factor in instrument specifications based on the crest value of rated input the signal with the crest factor larger than the specified value can be measured by s...

Страница 21: ...nction MOVING moving averaging REPEAT repeated averaging Count Set the times of the averaging function If the mode of the averaging function is set as EXP index averaging the attenuation constant can...

Страница 22: ...Iac P S and Q Ucf Icf PF and WPAV are calculated by operation of the averaged Urms Irms P and S Measurement function in harmonic measurement The following measurement functions are subject to direct a...

Страница 23: ...key Instruction U RANGE Set the voltage range I RANGE Set the current range RUN HOLD Running holding RESET Reset soft key When this key is pressed the instrument can immediately carry out measurement...

Страница 24: ...lay The power meter has three interface display styles for measurement of basic parameters At most five pages are displayed in each style When one or more important measurement parameter s should be h...

Страница 25: ...P power P Q S PF and Fsyn I current Irms Imn Irmn Idc Iac Ipk Ipk Ipp Icf fI and Irush U voltage Urms Umn Urmn Udc Uac Upk Upk Upp Ucf and fU 4 Press the key and move the cursor to select the paramete...

Страница 26: ...iption of information of waveform display interface Parameter name Parameter descriptions U_RANGE Voltage range setting press the soft key corresponding to this parameter to set the voltage range I_RA...

Страница 27: ...etting Introduction of waveform display interface The trigger status is described as follows Trigger status Instruction Auto When the trigger mode is set as Auto the trigger status Auto will be displa...

Страница 28: ...rm will be displayed and the triggering time point is called trigger point The trigger point is generally displayed in the left of the display screen Following the trigger point the waveform is displa...

Страница 29: ...djusted via the knob will be switched in sequence among U I TL TD Td 3 When the parameter is adjusted by rotating the knob the interface will display changes of the corresponding value 4 3 Setting of...

Страница 30: ...fication Interface type BNC interface Input level TTL Minimum pulse width 1 s Trigger delay time Within 1 s 3 sampling cycles NOTE When the voltage higher than 0 3 3V is applied on the external signal...

Страница 31: ...the working current in a large scale The current may decrease of dozens of amperes to a few milliamperes Ordinary power measuring instruments can only be used for integral measurement within one rang...

Страница 32: ...d average active power integral AV LARGE WP WP WP q q q WPAV Selection of the item to be displayed in a amplified manner WP watt hour the sum of positive and minus watt hours WP the consumption of pos...

Страница 33: ...d integral time are reset via integral resetting Error when the power supply is recovered the integral function is stopped and the integral result before power failure is displayed This integral state...

Страница 34: ...e maximum minimum display integral values Maximum minimum display integral value Active power integral WP 99999 Mwh Current integral q 99999 MAh Average power integral WPAV 99999 Mw Restricted impleme...

Страница 35: ...o select the required parameter as shown in the figure below Parameter descriptions Start set in the MANUAL mode or TIME mode via the right soft key MANUAL press the START soft key in the integral mea...

Страница 36: ...be stopped on the set date When it reaches the set time or the integral value reaches the maximum minimum display integral value integration will be stopped and the current integral time and integral...

Страница 37: ...Discharge used for measuring the DC positive and negative watt hours integration of sampling data Sold Bought used for measuring the AC positive and negative watt hours value integration in each data...

Страница 38: ...ft key corresponding to the RUN HOLD parameter to exit the HOLD status The power meter will display the integral result after exiting the HOLD status The schematic diagram of display of the HOLD RUN i...

Страница 39: ...Integral Operation Function Copyright Itech Electronics Co Ltd 31...

Страница 40: ...ency at most The IT9121 power meter displays harmonic parameters in the list or bar chart form so as to provide clear analysis of test results Introduction of soft keys on the interface Select the but...

Страница 41: ...rs will be displayed When the soft key corresponding to the FUNC parameter is pressed different measurement functions can be selected W I U can be selected as the measurement function in sequence when...

Страница 42: ...s are described in the following table Abbreviations Instruction Abbreviations Instruction U V Voltage UI Phase difference of k order harmonic voltage and harmonic current I mA Current UU Phase differ...

Страница 43: ...entage to the overall current voltage power amplitude of all harmonics f displaying harmonics in the form of percentage to the fundamental wave current voltage power PLL Source Select the PLL Phase Lo...

Страница 44: ...T9121 adopts PLL to multiply the frequency of the input signal The frequency multiplication output signal is used as the A D sampling clock in the instrument so as to achieve the purpose of synchronou...

Страница 45: ...e obtained at once Harmonic analysis order The harmonic analysis order k is an integer number ranging from 0 to the upper limit of analysis orders Zero indicates the DC component The upper limit of an...

Страница 46: ...has completed zero point calibration Test screen Self inspection of LCD screen Test dsp Self inspection of DSP Test beep Self inspection of the buzzer SelfTest is finished The instrument has finished...

Страница 47: ...zero Error description The set time must be larger than zero Possible cause The set integral time is not correct Disposal Reset the set integral time Harmonic open fail Error description The harmonic...

Страница 48: ...to the factory default values 1 Select SYSTEM INITIAL in the Menu interface to enter the system initialization interface See the following figure 2 Select the menu items to be initialized blue symbol...

Страница 49: ...whether the instrument fuse is in good conditions Check whether other connectors are in good conditions and whether cables plugs and other parts are connected properly Check whether the system config...

Страница 50: ...Maximum power consumption 50VA Battery backup Backup the setting parameters Dimension 214 5mmW 88 2mmH 354 6mmD 8 2 Screen Display Item Detailed Information Display Interface Specification Dimension...

Страница 51: ...505m Direct input range0 5A 20 A Input resistance Approx 5m Input inductance Approx0 1 H Sensor input Input resistance Approx 100k 2 5V 10V Input resistance Approx 20k 50mV 2V Continuous maximum allo...

Страница 52: ...warm up time has passed After zero level compensation or measurement range is changed Accuracy The following accuracy is the sum of the reading error and the range error f is the frequency of input s...

Страница 53: ...f apparent power 1 0004 PF2 1 PF2 100 Accuracy of power Factor PF PF PF 1 0002 cos cos sin 1 influence from the power factor when PF 0 100 1digit when voltage and current are at the measurement range...

Страница 54: ...tor PF phase difference frequency Hz fU FreqU voltage frequency fI FreqI current frequency max mix of voltage V Upk voltage positive peak Upk voltage negative peak max mix of current A Ipk current pos...

Страница 55: ...installed elements Method PLL synchronization method Frequency range fundamental frequency of the PLL source is in the range of 10Hz to 1 2kHz PLL source select voltage of current of each input eleme...

Страница 56: ...monic and fundmental wave I1 or total distortion wave Itotal Pthd active power ratio of total harmonic and fundmental wave P1 or total distortion wave Ptotal Window function Rectangle Note K is a inte...

Страница 57: ...system The level of scale range 500us case 1ms case 2ms case 5ms case 10ms case 20ms case 50ms case 100ms case 200ms case 500ms case The accuracy of horizontal cursor Each case is 4 0 Vertical system...

Страница 58: ...ble equipment America NI Company AT GPIB PCI GPIB or PCI GPIB PCMCIA GPIB PCMCIA GPIB or PCIe GPIB Drive program NI 488 2M 1 60 or update version Electrical and mechanical specifications IEEE St d 488...

Страница 59: ...cations Copyright Itech Electronics Co Ltd 51 Transmission system Ethernet 100BASE TX Transmission speed Maximum speed 100Mbps Communication protocol TCP IP Support equipment FTP service DHCP DNS Remo...

Страница 60: ...ng ITECH products In case of any doubts please contact us as follows 1 Refer to accompanying data disk and relevant manual 2 Visit ITECH website www itechate com 3 Select the most convenient contact m...

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