Huazheng Electric Manufacturing HZ-9003 User manual

HZ-9003
Partial Discharge Tester
USER MANUAL
Huazheng Electric Manufacturing(Baoding) Co,.Ltd

Contents
I.Standards............................................................................................................................... 1
II.Operation Notice.................................................................................................................. 1
III.General................................................................................................................................. 1
IV.Measurement Procedures.................................................................................................9
V.Tester Technical Specification......................................................................................... 22
VI.Maintenance......................................................................................................................24
VII.Packing List......................................................................................................................25

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I.Standards
The portable partial discharge tester is designed per the following standards:
GB/T 7354-2003 Partial discharge measurement
GB 4793.1-2007 Safety requirement for electric equipment for measurement,
control, and laboratory use- Part 1: General requirements,
GB/T 2423.8-1995 Environmental testing for electric and electronic products,
GB 2900 Electrotechnical terminology
GB/T 16927 High voltage testing techniques
DL/T 356-2010 Calibration specification of partial discharge measuring devices
DL/T 417-2006 Guide for Partial Discharge Measuring of Power Equipment
IEC1000 Electromagnetic compatibility
II.Operation Notice
1. Read the manual carefully before operating the measuring device.
2. When use different sensors for measurement during the testing, should setup correct
parameters at the “ parameter settings” to ensure the measurement accuracy.
3. If needs to replace sensors during the testing, should turn off the “ output voltage”.
4. During the testing, should handle the device with care, to avoid any bumps.
5. After testing, please turn off the power and then charge the device.
III.General
Portable PD tester is used for on-line detection and location of partial discharge of HV
equipment, which is designed based on our many years experiences in the partial
discharge measuring fields.
The system is equipped with composite TEV sensors, ultrahigh frequency sensors,
High-frequency current transformers and high sensitivity ultrasonic sensors to collect
partial discharge signals at high voltage equipment. The system adopts multilevel
detect frequency reduction techniques to reduce the discharge frequency of the signals,
meantime using high-speed AD conversion circuit to complete the signal digitization,

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also by using digital signal processing, adaptive filtering interference signal processing
methods to ensure the reliability of the testing data. By collecting different signals
produced from the partial discharge in different high equipment, the equipment
operation status can be detected rapidly. The tester can be installed for detection with
equipment operation and without any effect to the equipment operation. This will help
the workers to make evaluation timely for the switchgear cabinet operation status, and
thus greatly improve the equipment operation reliability, safety and effectiveness.
The Portable PD tester consists of main tester, PD testing software, composite TEV
sensors, ultrasonic sensors, high-frequency current transformer, ultrahigh frequency
sensor and connecting cables.
Portable PD tester

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3.1 Main Tester Panel
Portable PD tester main tester front panel
The front panel of the PD tester main computer is divided with several function areas,
according to the above number indications,
1. Wave display
2. F1- F5 Menu Buttons
3. Power indicator
4. MEAS: measurement menu
5. AUTORANGE: Auto
6. MENU OFF: Menu off
7. MENU: Menu button
8. AUTO: Auto setting button
9. RUN/STOP: On/Off
10. Direction Key
11. TRIG: Trig menu
12. LEVEL: Adjust trigger level
13. TIME/DIV: Time base
14. POSITION: Adjust level trigger position
15. HORI: Level menu

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16. VERTICAL: Adjust vertical position
17. VOLTS: Voltage shift
18. Power Switch
19. REF: REF menu
20. MATH: MATH function keys
21. CH2: display CH2 menu
22. CH1: display CH1 menu
23. UTILITY: Auxiliary function
24. SAVE RECALL: Save/Recall
25. RECORDER: Multi-meter trend chart, Oscilloscope trend chart, wave recorder.
26. SCOPE/DMM: Function interface switch button, switch to the multi-meter over
signal interface.
27. CURSOR: Cursor measurement
3.2 Charge Main Tester
The main tester should be charged when first use, the fully-charged time is 7 hours. The
charging time will reduce if the tester is partially charged. The charging will be stopped if
the battery is fully charged. The charging status is indicated by the charging light at the
panel.
1) light on : battery is charging
2) light off: Battery is not charging, charging is completed or charger is off.
3.3 Main tester Run/Off
1) Start: Press the Run button to power on, wait for 30 seconds the tester will be started,
the start button will be in yellow light.
2) Off: Press and hold down the start button to stop the main tester. The tester is off
when the main display is black.
3) Standby: The main tester will be at standby automatically when the main tester is not
operated for long, the start button will be in red light.
When the main tester is at standby state, press any key to activate the main tester.

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3.4 Display zones
1. Portable PD tester setting status information
T The tester has detected a trigger and collecting information after triggering.
The tester is at automatic mode and collecting wave without trigger.
The tester is continuously collecting wave data by scanning method and
displaying the wave data.
● The portable PD tester stops wave data collection.
S The portable PD tester has completed the single sequence acquistion.
2. Portable PD tester tool icons
: turn brighter means keyboard is locked, the tester is controlled by USB and the
keyboard is locked.
: turn brighter means USB is connected, if grey means no USB.
：Turn bright When connected with PC by USB, otherwise it is grey.
1.5 Menu
Press” Menu” button, menu bar is shown at the bottom of the display.
Change the setting options by pressing F1-F5 buttons when needs to change a different
requirement at the test.

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3.6 Menu bar and operation
1. Channel selection: Press” CH1”, “ CH2” buttons to select current channel.
Press CH1 to select Channel 1, then press “ Menu” button to setup or change current
channel 1 data or parameters.
Press CH2 to select Channel 2, then press” Menu” button to setup or change current
channel 2 data or parameters.
Watch the red box shown at the below screen to know chosen Channel 1 or Channel2,
displaying CH1 means Channel 1, displaying CH2 means Channel2.
2. Menu: Press” Menu” button to start the menu bar, then conduct settings per the
testing requirement.
1)Discharge detect: Press F1 key to select output discharge signals circularly, then
setup the signal output type per the detection requirement.

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“TEV” Output ground wave signal
“USS” Output ultrasonic wave signal
“UHF” Output UHF signal
“CT‘ Output to-ground current signal
Close: If only one channel is required for detection, then the other channel can be
closed.
If channel1(channel2) is closed, press” Menu” to start the menu bar, select the current
channel to CH1(CH2). If CH1(CH2) is open, then press CH1(CH2), the current channel
will not display at the screen which means it is closed. If to open the Channel
1( Channel2) again, then press CH1(CH2) to open CH1(CH2), which means current
channel selection is CH1(CH2).
2) Setting: Press” setting” F2 key to activate the current channel setting options.
Output voltage: Set output voltage for the sensors of the equipment which is to be
tested.
Press “ output voltage” F1 key to open the output voltage, press F1 key once to close
the voltage. When open the output voltage, the light will be on at the display screen.
When close the output voltage, the light will be off at the display screen.
Unit: Switch the measurement unit of the current channel discharge amount, mv,
dB,dbmW, dBuV, dBmV.
Press “ Unit” F2 key to change the current channel discharge Unit, This option is circular
selection, the unit selection can be determined by the discharge detection type.
Reading set, discharge numbers and sensors: Keep them as default values,

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non-professionals are forbidden to make any change.
Traffic light: Change the current channel traffic light, The color can be changed per
requirement.
Press Traffic light F2 key to activate traffic light color setting menu, traffic light colors are
green, yellow, red. Double press keys to change color.
If change to “ Green”, double press green” F1” key, then make change by pressing
arrow keys at the pop-up dialog box.
Press the direction keys to select number, and then press the middle Enter button for
confirmation, after that press the unit button, the green color setting is changed to the
setting data. Traffic light unit is aligned with the pre-set unit. Press Cancel key to
interrupt settings, the color will not change. The other colors can be set following the
green color setting.
3.7 Measurement mode
Press” TRIG” Key to open the trigger data setting menu bar, then press trigger mode”
F4” Key to make change of the current channel trigger mode.
Trigger Mode: Select trigger mode, Trigger mode can be automatic, normal and single
trigger.
At default condition, the portable PD discharge tester is at “ Automatic” mode. If the
tester doesn’t detect any trigger in a certain period, then trigger will be forced
automatically.

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When select” normal” mode, the tester can update the wave display only when the
effective trigger is being detected. The tester displays the existing waves before the
new waves.
When select “ single trigger” mode, the tester can display the waves only after first
trigger.
When trigger mode is selected as “ single trigger”, the channel display will show”
single”.
When trigger mode is selected as “ automatic” or “ normal”, the channel display will
show “ continuous ”.
IV.Measurement Procedures
When use the portable PD tester and with one sensor for testing , select Channel 1 to
conduct detect. When use two sensor for detection , then use Channel2.
Be noted: Turn off “output voltage” to replace sensor during the detection process.
4.1 TEV Measurement (mainly detect PD of switchgear
cabinet)
1. Composite TEV sensor wiring
Use BNC-SMA cable, connect the BNC to the tester CH1 channel BNC port and
connect the SMA to the TEV sensor “ RF-OUT” SMA port.

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Composite TEV sensor wiring
2. Tester setting
Open the tester, press and select CH1 to choose current channel to Channel1. Press
“menu” button and then press F1 Key to select the” discharge detect” to TEV. Press F2
key to setup “output voltage” and “unit”. When use composite TEV sensors for detection
the output voltage must be required.
3. Start Measurement
Press “ AUTORANGE” button, the tester is starting to measure when the button turns
green.
AUTORANGE open
Press the button, the tester will be at automatic
trigger mode, The display screen channel 1 will display
the current composite TEV sensor detecting PD signals.

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Non discharge signals With discharge signals
When the discharge signal detected by the switchgear cabinet PD tester is too large,
the display screen data will change into red, the sensor is saturated at this time.
Sensor saturated
4. Background noise
Instantaneous grounding voltage may occur outside of the switchgear cabinet due to
the electromagnetic signal sources. These sources can be overhead line insulators,
transformer tubing, strong radio signal even near highway traffic. These sources can
produce instantaneous earth voltage signals to the metals such as substation doors or
fences without touching or connecting. Therefore, the background noise on these
surfaces shall be measured before conducting switchgear cabinet detection.
Measure the background noise of the metal door ,fence which are not part of the
switchgear cabinet. Record down three continuous values of these metal parts, take the
intermediate amplitude as the reading for the background measurements.
5. Measurement precautions
After the main tester starts, make sure that the TEV sensor is in the free space away

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from the metal bodies, otherwise it will affect the self-test. In order to make measurement,
the TEV sensor shall be vertically parallel to the metal body to be measured. Once the
tester is at continuous measurement mode, the readings will be display immediately. But if
the TEV sensor is removed from the metal body, then the readings will not be displayed at
the screen.
If in a single measurement mode, once pressing down the button, the readings shall
be remained on the screen. Repeated the measurements several times can make sure
the consistency.
For measurement of the cabinet components such as cable box, current transformer
room, bus terminal room, circuit breakers and voltage transformers shall be conducted at
the center position. The locations of circuit breaker and other middle and high voltage
switches shall be recorded down. If these switches are in disconnected position, then the
components would not be electrified, there will be no measurement readings of them.
Record the first group readings of each locations. If the measurement amplitude is
10dB higher than background interference level, and the self-amplitude is greater than
20db, should record at least three sets of reading in a row.
6. Save
To save the current discharged signal, You need to prepare a USB disk to store the
graphics.
Save Graphics: Press” SAVE/RECALL”, open the save/recall menu bar, press
“ graphic” F5 key to save, the discharge signals will be stored at the USB. After testing,
plug the USB at the PC, you can read the stored discharge signal waves at PC.
7. Close
After the testing, press” AUTORANGE” key to close automatic trigger till the key light
is off. After closing the automatic trigger, Press” Menu off” to close the menu bar if the
menu bar is popping-up.
AUTORANGE Close

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4.2 High Frequency current transformer measurement
(Mainly measure transformer inside partial discharge)
1. High frequency current transformer connection
Use BNC-BNC cable to connect to the tester CH1 channel BNC port, the other end to
the high frequency current transformer BNC end.
High frequency current transformer connection
2. Tester settings
Open the tester, press and select the current channel to CH1, Press” MENU” key, then
press F1 key to select “ discharge test” as HFCT, press F2 Key to set” output voltage”
and “ unit”. When test the high frequency current transformer it would require output
voltage.
3. Start measurement
Press” AUTORANGE” Key till the light is on to green, then the tester is about to
measure.

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AUTORANGE Open
The tester will be then at automatic trigger state, the Channel 1 screen will display the
current high frequency current transformer testing discharge signals .
Non-discharge Signals with discharge signals
When the discharge signal is too large ,the value at the screen will then turn red, at this
moment the sensor is in saturation state.
Sensor Saturated
4. Save
To save the current discharged signal, You need to prepare a USB disk to store the
graphics.
Save Graphics: Press” SAVE/RECALL”, open the save/recall menu bar, press
“ graphic” F5 key to save, the discharge signals will be stored at the USB. After testing,
plug the USB at the PC, you can read the stored discharge signal waves at PC.

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5. Close
After the testing, press” AUTORANGE” key to close automatic trigger till the key light
is off. After closing the automatic trigger, Press” Menu off” to close the menu bar if the
menu bar is popping-up.
AUTORANGE Close
4.3 Ultrasonic Measurement (Mainly support the measurement
of transformer inside partial discharge)
1. Ultrasonic sensor connection
Use BNC-BNC cable to connect to the tester CH1 channel BNC port, the other end to
the high frequency current transformer BNC end.
Ultrasonic sensor connection
2.Tester settings
Open the tester, press and select the current channel to CH1, Press” MENU” key, then
press F1 key to select “ discharge test” as HFCT, press F2 Key to set” output voltage”
and “ unit”. When use ultrasonic sensor to conduct measurement it would require output
voltage.

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3. Start measurement
Press” AUTORANGE” Key till the light is on to green, then the tester is about to
measure.
AUTORANGE Open
The tester will be then at automatic trigger state, the Channel 1 screen will display
the current ultrasonic sensor testing discharge signals .
Non-discharge Signals with discharge signals
When the discharge signal is too large ,the value at the screen will then turn red, at
this moment the sensor is in saturation state.

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Sensor Saturated
4. Measurement
Open the tester and select USS (ultrasonic mode), plug the headset and adjust volume.
The readings will be displayed at the screen. Take measurement of the background
noise. At any case, should follow the safe distance requirement.
5.Save
To save the current discharged signal, You need to prepare a USB disk to store the
graphics.
Save Graphics: Press” SAVE/RECALL”, open the save/recall menu bar, press
“ graphic” F5 key to save, the discharge signals will be stored at the USB. After testing,
plug the USB at the PC, you can read the stored discharge signal waves at PC.
6. Close
After the testing, press” AUTORANGE” key to close automatic trigger till the key light is
off. After closing the automatic trigger, Press” Menu off” to close the menu bar if the
menu bar is popping-up.
AUTORANGE Close

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4.4 Ultra-High frequency measurement (Mainly measure GIS
internal Partial Discharge)
1. Ultra-high frequency sensor connection
Use BNC-SMA cable to connect to the tester CH1 channel BNC port, the other SMA
end to the ultrahigh frequency cable “ OUT+12V” Port.
Ultra-high frequency sensor connection.
2.Tester settings
Open the tester, press and select the current channel to CH1, Press” MENU” key, then
press F1 key to select “ discharge test” as UHF, press F2 Key to set” output voltage”
and “ unit”. When use ultrasonic sensor to conduct measurement it would require output
voltage.
3.Start measurement
Press” AUTORANGE” Key till the light is on to green, then the tester is about to
measure.