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Harmonic Measurement Function

Function

Description

U(V)

Voltage

I(mA)

Current

P(mW)

Power

Q(mvar)

Reactive Power

S(mVA)

Apparent Power

PF()

Power Factor

𝜙

UI(

∘

)

Phase difference of k-order harmonic voltage and harmonic current

𝜙

UU(

∘

)

Phase difference of harmonic voltage U(k) and fundamental U(1)

𝜙

II(

∘

)

Phase difference of harmonic current I(k) and fundamental I(1)

U(%r) or U(%f) Voltage harmonic distortion
I(%r) or I(%f) Current harmonic distortion
P(%r) or P(%f) Power harmonic distortion

Table 6.2

Measurement Parameters

Figure 6.4

Harmonic Measurement Setup Menu

6.3.1 Parameters

Use the arrow keys to select the different parameters, and if numeric, the rotary knob to set the value, or the soft-keys.

THD Formal

Distortion factor calculation formula.

% r

displaying harmonics in the form of percentage 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 Locked Loop) source: U/I/OFF. Used for determining the fundamental

wave cycle as the reference for analysis of harmonic orders.

Serial

Harmonic sequence: whole sequence/odd sequence/even sequences

Order Max

Set the harmonic analysis orders (1-50). You can specify the harmonic measurement range. These

specified analysis orders are used for calculating the value of the distortion factor.

Содержание 5335B

Страница 1: ...5335B User Manual Power Meter...

Страница 2: ...so accompanied by a maximum voltage of the circuit to be tested which defines the voltage impulses expected and required insulation clearances These categories are Category I CAT I Measurement instrum...

Страница 3: ...r flammable atmosphere Do not operate the instrument in the presence of flammable gases or vapors fumes or finely divided particulates The instrument is designed to be used in office type indoor envir...

Страница 4: ...when the covers are removed To avoid injuries always disconnect the power cord from the instrument disconnect all other connections for example test leads computer interface cables etc discharge all c...

Страница 5: ...rument is intended for indoor use and should be operated in a clean dry environment Temperature Operating 0 to 40 Non operation 20 to 60 Note Direct sunlight radiators and other heat sources should be...

Страница 6: ...collection facilities in the disposition of this product and otherwise observe all applicable requirements Safety Symbols Symbol Description indicates a hazardous situation which if not avoided will...

Страница 7: ...LINE Linear averaging 18 2 9 External Sensor Setup 19 2 10 Other settings Filter and Crest Factor 19 2 10 1 Filter 19 2 10 2 Crest factor 20 2 11 Inrush Measurement Setup 21 2 12 Cal Zero 21 2 13 Rat...

Страница 8: ...ation 39 7 3 Setting of Integral Measurement Configuration 40 7 3 1 Parameter descriptions 40 7 4 Integration 41 8 Remote Operation 42 8 1 RS 232 Interface 42 8 1 1 RS 232 troubleshooting 42 8 1 2 RS...

Страница 9: ...for a view and details of the front panel 1 1 Features 4 3 inch color LCD Configurable display of measurements in 3 formats Input range 600Vrms 20Arms from DC to 100kHz Voltage current power harmonic...

Страница 10: ...1 Front Panel Button Name and function Waveform Display key press to view waveforms See Chapter 5 Harmonic Measurement key For viewing harmonic measurements See Chapter 6 Basic Measurement key The nor...

Страница 11: ...tage The internal shunt is here and should be connected in series with the load See Figure 1 2 Item Description Item Description GPIB Connector AC Line LAN Connector External Current Sensor USB Connec...

Страница 12: ...x in the rear panel beneath the AC power socket Figure 1 3 3 With a small flat blade screwdriver insert the blade into the fuse box slit to pull and slide out the fuse box 4 Pull out the fuse inside t...

Страница 13: ...u tree information about the system communication settings system settings like time and date self test and setting the machine to the default state are available 2 2 System Menu From the system menu...

Страница 14: ...erface support 6 common baudrates 4800 9600 19200 38400 57600 115200 Use the arrow keys to navigate the menu screen and the soft keys to select the desired baudrate The number of data bits parity and...

Страница 15: ...P is selected the current IP subnet and gateway are shown on screen Figure 2 6 When MANU is selected static mode Figure 2 7 the screen shows fields for setting the IP subnet and gateway Using the arro...

Страница 16: ...s screen a test of each button is also available A representation of all the buttons appears on screen after selecting the KEY TEST key pressing the individual keys will highlight the text on screen i...

Страница 17: ...eraging external sensors update speed and similar are configured under this menu See Figure 2 11 2 8 2 Averaging Setup When measuring low frequency signals where measurements begin to become unstable...

Страница 18: ...tup the external sensor inputs Other Set Setup the remaining settings Inrush Set Set the timing and trigger levels for measuring inrush Figure 2 11 Setup Info Menu Dn 1 the value displayed after the n...

Страница 19: ...Sen Set and contains settings for external sensors The state on off and gain V A mA are set here 2 10 Other settings Filter and Crest Factor Configure the measurement filter synchronization signal sou...

Страница 20: ...is turned off Crest Factor Set the crest factor CF3 CF6 Update Rate Data Updating Rate Setting key when this key is pressed the capture interval of the voltage current power and other data i e data up...

Страница 21: ...l A The current level to triggin inrush measurement Delay Time ms The hold off time following a trigger to start measurement Measure Time s The duration of the measurement following trigger and delay...

Страница 22: ...lue of the selected digit To commit the setting change press the button See Figure 2 17 Figure 2 17 Ratio Setup Menu 2 14 External Current Sensor More information to be added in future versions of thi...

Страница 23: ...ctor If the the signal will exceed the range of the unit crest factor range then the measurement value will be clipped and the value inaccurate Conversely by choosing a Crest Factor and Range combinat...

Страница 24: ...example measuring 10Hz with an interval of less than the 0 5s setting will not yield stable results The unit needs a number of cycles to be present to determine the frequency and measurement intervals...

Страница 25: ...the measured frequency parameter more accurate When the frequency filter is switched on the voltage or current of no more than 200Hz can be measured The cutoff frequency is 500Hz 3 8 Line filter It is...

Страница 26: ...ncreased rapid load changes of the power system can be measured Conversely when decreased relative low frequency signals can be measured Values 0 1 0 25 0 5 1 2 and 5 seconds Figure 3 2 Other Settings...

Страница 27: ...value is the repeated average Note When index averaging is set averaging is implemented under the harmonic measurement function When linear averaging is set averaging can only be implemented in the c...

Страница 28: ...hrough the different configurations up to 5 of them 3 The CONFIG soft key enters the configuration mode for that set of pages 4 The FUNC soft key cycles through the sets of measurements available for...

Страница 29: ...Meter Display 29 Figure 4 2 4 main measurements Figure 4 3 12 main measurements...

Страница 30: ..._RANGE Current range setting press to set the current range RUN STOP Run stop press to run or stop waveform capture SINGLE Single measurement pressing this stops capture and proceeds with a single cap...

Страница 31: ...play interface Press the soft key corresponding to the TIRG SET parameter to enter the trigger setting interface as shown below Figure 5 2 Trigger Setup Screen 3 Press the right soft key corresponding...

Страница 32: ...ternal signal input interface Synchronous the instrument may be damaged Minimum pulse width refers to the width of the high or low trigger level at least 1 Trigger delay time refers to the delay betwe...

Страница 33: ...rmonic measurements BAR Display the bar chart mode LIST Display the list mode SETUP Enter the setup menu See Section 6 3 Table 6 1 Harmonic Measurement Parameters 6 1 Bar Graph Mode The bar chart Figu...

Страница 34: ...layed as a complete odd or even set See Figure 6 3 From the SETUP menu the list of harmonics is defined The 1st through the 50th odd even or all harmonics to display is configured here Figure 6 3 List...

Страница 35: ...ys to select the different parameters and if numeric the rotary knob to set the value or the soft keys THD Formal Distortion factor calculation formula r displaying harmonics in the form of percentage...

Страница 36: ...rce is small relative to the range PLL synchronization might fail If the crest factor is set as 3 the amplitude level of the PLL source should be greater than 50 of the range If the crest factor is se...

Страница 37: ...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 range If the measured value exceeds...

Страница 38: ...is parameter STOP Integral Stop button In the manual stop mode the integral function can be disabled by pressing the soft key corresponding to this parameter SETUP Set relevant parameters of integral...

Страница 39: ...When the integral value meets the following overflow conditions the integral function will be disabled and the integral time and integral value at this point will be kept The integral time reaches the...

Страница 40: ...e maximum integration time 10 000 hours or the integral value reaches the maximum minimum display value integration will be stopped and the current integral time and integral value will be kept TIME T...

Страница 41: ...en you need to keep the current integral status and integral result you can press the soft key corresponding to the RUN HOLD parameter Then the current status of the integral result display and commun...

Страница 42: ...le tab rs232pinout shows the pinout for the connector If your computer uses a DB 25connector for the RS 232interface you will need a cable or adapter with a DB 25 connector on one end and a DB 9 conne...

Страница 43: ...MsgID TRIGGER USBTMC command message and forwards TRIGGER requests to the function layer The USB488 device capabilities of the power meter are described below The device understands all mandatory SCPI...

Страница 44: ...255 255 255 255 Vast TCP IP networks like Internet are often divided into several small networks i e subnets The subnet mask is used to identify how many digits of the 32 digit values in the IP addre...

Страница 45: ...Specifications The specifications listed below are valid and specified for the following conditions Warm up time of 30 minutes Ambient temperature 23 5 Relative humidity 30 to 75...

Страница 46: ...r input 20 k 50 mV to 2 V 100 k 2 5 V to 10 V Input current continuous max 5 mA to 200 mA range 30 A peak or 20 A RMS whichever is less 0 5 A to 20 A range 100 A peak or 30 A RMS whichever is less Sen...

Страница 47: ...10 V CF 6 1 25 V 2 5 V 5 V External 2 CF 3 50 mV 100 mV 200 mV 500 mV 1 V 2 V CF 6 25 mV 50 mV 100 mV 250 mV 500 mV 1 V Accuracy 2 line frequency digital filter set to off DC to 1 kHz 0 1 0 2 F S 1 kH...

Страница 48: ...LAN Power 100 to 240 VAC 50 60 Hz Power Consumption 50 VA max Dimensions W x H x D 8 4 x 3 5 x 14 214 5 mm 88 2 mm 354 6 mm Weight 6 2 lbs 2 8 kg Three Year Warranty Standard Accessories Getting star...

Страница 49: ...tion of LCD screen Test dsp Self inspection of DSP Test beep Self inspection of the buzzer SelfTest is finished The instrument has finished the self test Softkey is not available The current soft key...

Страница 50: ...orrect Disposal Reset the set integral time Harmonic open fail Error description The harmonic function cannot be enabled Possible cause Communication abnormality Disposal Check the communication cable...

Страница 51: ...termine whether to initialize this menu item Or use the soft key for initialization of all menu items or no initialization for all menu items in the lower part of the interface 4 Press the START soft...

Страница 52: ...tors and accessories that you are using with the device Customers not on an open account must include payment in the form of a money order or credit card For the most current repair charges please ref...

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