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HZ-4000T2

Cable fault location system

Operation Manual

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Содержание HZ-4000T2

Страница 1: ...HZ 4000T2 Cable fault location system Operation Manual...

Страница 2: ...age equipment Strictly follow the national high voltage equipment operating specifications This instrument has a high voltage characteristics please pay attention to personal and equipment safety Make...

Страница 3: ...ear high voltage capacitor arc stabling units and a variety of signal acquisition in one body which facilitates fault location operation 2 Switching between three gear test modes two gear voltage leve...

Страница 4: ...gy 1536 joules 5 Ball gap discharge Weak electricity control Discharge cycle can be adjusted within 3 12 seconds It has a specially designed silencer which meets the requirement of silence when fault...

Страница 5: ...right Input Cable Fault Location System High voltage output cable Ground of protection Red clip Black clip Ground of system Fault cable 2 The following figure is wrong test wiring From left to right...

Страница 6: ...igure In the drawing 1 total switch 2 Adjusting the ignition time 3 Selecting test voltage 4 Selecting Test Mode 5 Start ignition stop key 6 Regulator knob 7 Output voltage indicator 8 Output current...

Страница 7: ...4 Adjust the ignition time knob and test voltage gear button and test mode gear button if the test instrument is in high voltage charged state or start state the test voltage test mode adjustment oper...

Страница 8: ...e The boost can be slightly low and gradually increased but do not set voltage exceeding the voltage gear when it s the first connection 8 The operator pulse reflect meter TDR will test input signals...

Страница 9: ...not allow the instrument stopped using more than 20 minutes Turn off the power switch if you do not use it in a long term V HZ 4000T2 Cable Fault Location System Physical List 1 HZ 4000T2 cable fault...

Страница 10: ...test of power cable has been a headache for power system Using cable fault test capabilities provided by this system will make it very simple In line with the different nature of power cable fault th...

Страница 11: ...s Reading resolution V 2f m resolution of less than 0 5 m Preset four kinds of cable wave propagation speed in the instrument Four sets of waveform processing makes it easier to identify waveform and...

Страница 12: ...ardware waveform processing circuit compared with DMS 3500 HZ 4000T2 Cable Fault Tester Operation I Panel Structure Introduction Panel layout schematic diagram as above functions as following Q output...

Страница 13: ...red clip with cable core wire and the black clip with cable shield ground or another phase on the other side 2 Wiring of high voltage method Connect signal test line on Cable Fault Location System con...

Страница 14: ...ers and sampling waveform each part as follows Starting point green and end point red of the whole picture waveform display area indicates waveform interval that has been selected The whole picture wa...

Страница 15: ...u select wave up and down arrow keys to move waveform Waveform can only be moved in waveform comparison function mode or multiple pulse mode 12 Filtering methods Shortcut key Select filtering methods...

Страница 16: ...creen will not be turned on so please turn off the switch immediately to charge Note When measure with high voltage mode the cable fault tester host should use the battery with it to avoid interfering...

Страница 17: ...r XLPE cables you can choose 172m s If Electric Wave Speed is not in these types press Settings Speed setting to select Magnitude knob can be placed on about one third 4 Press Sampling key to collect...

Страница 18: ...Moves Selection must be in cursor state Press inflection point at the start and the vertical cursor will move over here then you can press key to fine tune Press Starting Point to locate this cursor P...

Страница 19: ...t Key To adjust sampling reference point and move upward the position indicating benchmark of left triangle appeared In the waveform comparison and multiple pulses mode available to move up waveform K...

Страница 20: ...the desired operation or to enter corresponding interface when you need to adjust parameters or process waveform Menu will display as follows after you press Settings key Menu Displayed After Pressin...

Страница 21: ...ey and it appears as shown in the display Press Sampling Frequency Picture of Proportion Communication Rate according to need and you can enter corresponding parameter sampling frequency of 120M 60M 3...

Страница 22: ...Communicating speed exit OK Right Sampling mode Sampling frequency Electrical wave Filter mode Moves selection Bottom Settings Start Point Sampling Working voltage Pulse Settings Press Pulse Settings...

Страница 23: ...set to 2 5 The longer the cable length is the larger this value is Width refers to width of low voltage pulse transmitted typically long distances between width of 0 2 microseconds to 0 5 microsecond...

Страница 24: ...four different cable speed keys already so you can directly click to select If it s other speed of cable you can click Speed Settings before showing digital keys which you can input speed values Inpu...

Страница 25: ...d Press Cable Speed key to enter sub menu to measure cable speed The premise is that you ve already got electric wave in Sampling mode and already moved a good starting point and end point of the curs...

Страница 26: ...speed exit OK Right Sampling mode Sampling frequency Electrical wave Filter mode Moves selection Bottom Settings Start Point Sampling Working voltage Waveform Processing There are Waveform Recall Wav...

Страница 27: ...ant according to time displayed and press OK key to bring it up A small area of intermediate position of the yellow waveform shows thumbnails of the waveform which can display curve of the waveform to...

Страница 28: ...Comparison function Press Waveform Comparison key use up and down arrows on the lower row to select the files that need to be compared and you can choose any one of the 60 Press OK to achieve contras...

Страница 29: ...ch waveform occupies 64K bytes Storage uses sampling time for file name Press Waveform Storage key and select the location to be stored with up and down keys on the lower row and press OK to store If...

Страница 30: ...Speed Waveform Processing Time Setting Exit Middle Waveform Recall Waveform Comparison Waveform Storage Waveform Delete Waveform Print exit OK Right Sampling mode Sampling frequency Electrical wave F...

Страница 31: ...e and time Respectively press year month day hour second to be set and the corresponding figures will turn red then you can use digital keyboard to input value After all the input is completed remembe...

Страница 32: ...n quickly move the cursor to the destination point in the main display area Starting point is green and the end is white If you want to change the starting point move the white cursor to the point to...

Страница 33: ...4 Waveform Introduction in Various Sampling Methods The following figure shows the whole long distance waveform for low voltage pulse cable or distance waveform of cable disconnection fault...

Страница 34: ...rm Compression ratio of the main waveform Fault distance Width The whole distance or open circuit fault distance of the cable Main waveform area Pulse launched by instrument Open circuit reflected wav...

Страница 35: ...ow voltage pulse test mode waveform Compression ratio of the whole picture of waveform Compression ratio of the main waveform Fault distance Width Short circuit fault distance Main waveform area Pulse...

Страница 36: ...waveform comparison Left from top to bottom Corresponding to two vertical cursors of the main waveform area The whole picture of waveform area Low voltage pulse test mode waveform Comparison between g...

Страница 37: ...by instrument Whole distance Whole distance reflected waveform Right Sampling mode Sampling frequency Electrical wave Filter mode Moves selection Bottom Settings Start Point Sampling Print The follow...

Страница 38: ...of waveform Compression ratio of the main waveform Fault distance Width Greater than fault distance Fault distance Main waveform area Ball gap discharge waveform Point of fault flashover breakdown wav...

Страница 39: ...ure of waveform area Current sampling test mode waveform Compression ratio of the whole picture of waveform Compression ratio of the main waveform Fault distance Width Greater than fault distance Faul...

Страница 40: ...s selection Bottom Settings Start Point Sampling Print The following figure shows the sampling waveform of high voltage multi pulse stable arc Left from top to bottom Corresponding to two vertical cur...

Страница 41: ...Width Fault distance Whole distance of cable Main waveform area Right Sampling mode Sampling frequency Electrical wave Filter mode Moves selection Bottom Settings Start Point Sampling Print VII HZ 40...

Страница 42: ...ear of cable fault location instrument to determine the location of cable fault Cable fault location instrument uses a 3 8 inches 320 240 dot matrix high resolution LCD screen design which has abundan...

Страница 43: ...Electromagnetic gain 80DB 5 Working voltage 3 5V 8V 4 of AA Battery 6 Current consumption 80MA LCD backlight off 180MA LCD backlight on 7 Magnetic acoustic difference 0 25 ms 8 Time difference resolu...

Страница 44: ...III Structural Principles Probe View magnet bar vertical position Probe view magnetic bar transverse position...

Страница 45: ...From left to right Battery compartment Side view Headphone output Front view Power switch From left to right Rear view Input...

Страница 46: ...ing mode of location instrument or path instrument After pressing Settings key to enter setting interface when menu bar appears select parameters needed to be adjusted using arrow keys Change the valu...

Страница 47: ...Parameter Settings Function Selection Interface From top to bottom Parameter settings 56 Light 56 Backlight off Function L Parameter adjustment...

Страница 48: ..._ Magnetic difference cursor Current sound band pass 4 band pass 4 Current sampling switch state Sampling open Current amount of magnetic gain 50 Magnetic gain 50 Current amount of sound gain 50 Soun...

Страница 49: ...and less than 100 mA Under normal circumstances you can hear beep sound from signal generator in the headphones of the location instrument Press or key to adjust the size of the sound heard and press...

Страница 50: ...an electromagnetic pulse when high voltage ignition it will automatically generate a waveform sampling process and the electromagnetic waveform and sound waveform will automatically refresh and displa...

Страница 51: ...arrow key or is used to select the sound band pass There are four kinds of sound band pass respectively 200 Hz 450 Hz 800 Hz and 1500 Hz For different geological and cable media there is a best sound...

Страница 52: ...ue of magnetic Gain will change In usage according to the signal strength adjust the size of sound gain and magnetic gain to facilitate analyzing waveform Left or right side of Cable judgment The loca...

Страница 53: ...n of the fault As some of the cables are directly buried or embedded in the channel while there is no complete drawing to clearly determine the cable path This is where you need delicate instruments t...

Страница 54: ...e coil is located directly above the wire and parallel to the cable the magnetic field lines are perpendicular to the plane of the coil The magnetic field lines go through the coil by maximum coupling...

Страница 55: ...tion make the magnet coil axis perpendicular to the ground and slowly move the coil When the coil is located directly above the wire and perpendicular to the cable the magnetic field lines are paralle...

Страница 56: ...gradually becomes larger When moving to a certain distance the sound will be the maximum Move a further distance and the sound will gradually become weakened In the vicinity of the cable the sound and...

Страница 57: ...d it is always easy to distinguish So crest method applies perfectly when just beginning to discover cable The crest method has a weak signal and narrow crest which is good for delicate location But i...

Страница 58: ...the smallest sound in the headphones Line BO and CO connecting two valley point B or C and the cable location O are 45 degrees to the straight line AO which makes triangles AOB and AOC right angle iso...

Страница 59: ...he coil so the induced electromotive force generates in the coil and you can hear the loudest sound in headphones Then move the ferrite antenna on both sides A small part of the magnetic field lines o...

Страница 60: ...c of impact discharging sound measurement method if you are equipped with DMS series cable fault location system you can switch Test Mode Select key to location mode a phase ground fault wiring diagra...

Страница 61: ...g the cable path on the estimated location of the fault After hearing the sound of the point of fault discharge you still need to find out the biggest sounding place along the cable path Just find the...

Страница 62: ...signal to be amplified and then shown as a display element This creates the conditions for synchronous reception method of location instrument When locate by synchronous receive method if you hear th...

Страница 63: ...the battery voltage 4 AA batteries No 5 batteries can generally be used 20 hours not opening LCD backlight or 10 hours opening LCD backlight When the voltage is below 4V please replace the battery VII...

Страница 64: ...0 50V 0 100V Output Current 0 1000mA Output frequency 15 kHz for path detection 300Hz for electromagnetic location Exo 105 high 240 width 290 Depth mm III Usage Connected to power and then turn on th...

Страница 65: ...s on the instrument then the screen will have an output current indication Output jack should be connected from the low voltage to high voltage When the output current indication is 200 600 range the...

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