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GDVLF-60 VLF AC Hipot Test Set
GDVLF-60kVGDVLF-60kVGDVLF-60kVGDVLF-60kV
VLFVLFVLFVLF ACACACAC HipotHipotHipotHipot TestTestTestTest SetSetSetSet
HV HIPOT ELECTRIC CO., LTD
GDVLF-60 VLF AC Hipot Test Set
CautioCautioCautioCautionsnsnsns● The test is to be carried out by qualified person only, following this manual.
● When plugging in and out cable, please be careful to avoid electric shock.
● Don't operate this device in flammable and moist environment. Keep the surface clean
and dry.
● Connect cables correctly. Connect the device with ground first and then to connect with
other cables.
● Operators should keep safe distance from high voltage electrified body. Don't touch
exposed contacts and location when products electrified.
● When the test is finished, the test object should be discharged completely by discharge
rod, before removing the wirings.
● Please turn off power when test is finished.
● Please make sure the equipment is facing upside before opening the box. Don't beat
equipment heavily to avoid equipment damage.
● Put the equipment in dry,clean,ventilative and no corrosive gas indoor places.Piled putting
is not allowed if there is no wooden box.
● Panel should be up in storage.Underlay moisture proof items at the bottom of equipment
to prevent damp.
WarrantyWarrantyWarrantyWarrantyThe warranty period for this series is one year from the date of shipment, please refer to
your invoice or shipping documents to determine appropriate warranty dates. Hvhipot
corporation warrants to the original purchaser that this product will be free from defects in
material and workmanship under normal use. Throughout the warranty period, provide that
such defects are not determined by Hvhipot to have been caused by abuse, misuse,
alteration, improper installation, neglect or adverse environmental condition, Hvhipot is
limited solely to repair or replacement of this instrument during the warranty period.
GDVLF-60 VLF AC Hipot Test Set
PackingPackingPackingPacking listlistlistlist
Controller 1 pc
30kV Booster (HV Unit) 2 pcs
Capacitor 1 pc
Low Voltage Connecting Cable 2 pcs
Short Circuit Cable 1pc
30kV High Voltage Connecting Cable 1 pc
60kV High Voltage Connecting Cable 1pc
Ground Wire 1 pc
Power Cord 1 pc
Fuse 4 pcs
Print paper 2 rolls
Discharge Rod 1 pc
Manual 1 pc
Test Report 1pc
HV Hipot Electric Co., Ltd. has strictly and carefully proofread the manual, but we can not
guarantee that there is completely no errors in the manual.
HV Hipot Electric Co., Ltd. is committed to making continuous improvement in product
functions, and improving service quality, so the company remains the right to change any
products and software programs described in this manual as well as the content of this
manual without prior notice.
GDVLF-60 VLF AC Hipot Test Set
CONTENTSCONTENTSCONTENTSCONTENTS
I. General Information................................................................................1
II. Features................................................................................................1
III. Technical Data......................................................................................2
IV. Instrument Structure.....................................................................................3
V. Operation Instructions...................................................................................5
VI. Safety Notice……………………………………………………………………13
GDVLF-60 VLF AC Hipot Test Set
IIII.... GeneralGeneralGeneralGeneral InformationInformationInformationInformation
Withstand voltage test is an essential preventive test for electrical equipment. It is divided
into two parts: AC and DC withstand voltage test. AC test can be further divided into power
frequency, variable frequency and 0.1Hz very low frequency test, among which the last one
is highly recommended by IEC, due to its remarkable advantages.
Following is a comparison for DC, Power Frequency, Variable Frequency, and 0.1Hz test.
Aspects DC Power
Frequency
Variable
Frequency
0.1Hz
Equivalency poor good good good
Insulation Damage strong slight slight slight
Operation Safety relatively low relatively low relatively low high
Wiring Difficulty complicated complicated most complicated simple
Volume smallest largest large small
In fact VLF test is the substitute for power frequency test. It is suitable for testing electrical
equipment with large capacitance.
II.II.II.II. FeaturesFeaturesFeaturesFeatures
In addition, VLF hipot from HV Hipot has features as follows:
� Small size and light weight. Big LCD screen and built-in printer.
� 0.1Hz, 0.05Hz and 0.02Hz can be chosen, which ensures a wide test range.
� It realizes the fully automatic voltage boost, step-down, measurement and protection as
well as the manual intervention in the process of automatic voltage boost.
� Overvoltage protection and overcurrent protection. Action time is no longer than 20ms.
GDVLF-60 VLF AC Hipot Test Set
� Data of current, voltage, wave form can be directly sampled at high voltage side, so the
data is real and accurate.
� A high voltage output protective resistor is provided in the voltage boost body in the
design and this eliminates the need of additional protective resistor connected outside.
� Closed-loop negative feedback circuit is adopted. No capacity rising during outputing.
III.III.III.III. TechnicalTechnicalTechnicalTechnical DataDataDataData
Model No: GDVLF-60
Peak voltage: 60kV
Test frequency: 0.1Hz, 0.05Hz and 0.02 Hz (selectable)
Fuse: 10A
Maximum load capacity: 1.1μF@0.1Hz; 2.2μF@0.05Hz; 5.5μF@0.02Hz
Power supply: 220V ±10%, 50Hz ±5% (If using a portable generator, make sure the output
voltage and frequency are stable. Power >3kW.)
Output voltage accuracy: peak voltage instability ≤1%; frequency instability ≤3%; waveform
distortion: <5%.
Working environment: indoor or outdoor; -10℃-+40℃; 85%RH
Weight: Control unit: 4kg; HV unit I: 25kg; HV unit II: 45kg.
RemarksRemarksRemarksRemarks: Capacitance of test object can not be larger than the maximum value of the test
instrument. If capacitance of test object is smaller than 0.05μF, the hipot should be
equipped with an auxiliary device (supplied by HV Hipot at your option).
GDVLF-60 VLF AC Hipot Test Set
IV.IV.IV.IV. InstrumentInstrumentInstrumentInstrument StructureStructureStructureStructure
1.1.1.1. PanelPanelPanelPanel StructureStructureStructureStructure
FigureFigureFigureFigure 1111
NO.NO.NO.NO. PanelPanelPanelPanel KeysKeysKeysKeys FunctionFunctionFunctionFunction
1111 FunctionFunctionFunctionFunction keyskeyskeyskeys Operating with Instructions on Prompt Bar.
2222 ON/OFFON/OFFON/OFFON/OFF Power ON/OFF, with an indicator light inside.
3333 LCDLCDLCDLCD Displaying test data and output waveform.
4444 ACACACAC 220220220220VVVV Power supply socket, with fuse inside.
5555 PrinterPrinterPrinterPrinter Printing test reports.
6666 OutputOutputOutputOutput-ⅠOutput multi-core socket, connected with HVHVHVHV UnitUnitUnitUnit IIII input
socket. DoDoDoDo notnotnotnot connectedconnectedconnectedconnected totototo HVHVHVHV UnitUnitUnitUnit II.II.II.II.
7777 OutputOutputOutputOutput-Ⅱ
Optional socket, connected with HVHVHVHV UnitUnitUnitUnit IIIIIIII when rated
voltage reaches 60kV or above. DoDoDoDo notnotnotnot connectedconnectedconnectedconnected totototo HVHVHVHV
UnitUnitUnitUnit I.I.I.I.
8888 LCDLCDLCDLCD ContrastContrastContrastContrast Adjusting LCD contrast.
9999 GroundGroundGroundGround Grounding terminal, which is connected with ground.
GDVLF-60 VLF AC Hipot Test Set
2.2.2.2. HVHVHVHV UnitUnitUnitUnit StructureStructureStructureStructure
FigureFigureFigureFigure 2222
3.3.3.3. LCDLCDLCDLCD InterfaceInterfaceInterfaceInterface
FigureFigureFigureFigure 3333
GDVLF-60 VLF AC Hipot Test Set
V.V.V.V. OperationOperationOperationOperation IIIInstructionnstructionnstructionnstructionssss
1.1.1.1. WiringWiringWiringWiring MethodsMethodsMethodsMethods
There are two modes of connection: single connection and connection in series, which
means it can be used for test volatge of both 30kV and 60kV.
A. Single Connection Method
If rated voltage is 50kV or below, it is enough to use one HV Unit (booster), single
connected. Single connection mode can be selected on Parameter Setting Interface after
power on.
FigureFigureFigureFigure 4-14-14-14-1 ConnectionConnectionConnectionConnection ofofofof 30kV30kV30kV30kV
B. Wiring Method of Connection in Series
When rated voltage reaches 60kV and above, two Boosters should be connected in series
for testing. This mode is also selected on Parameter Setting Interface after power on.
GDVLF-60 VLF AC Hipot Test Set
FigureFigureFigureFigure 4-24-24-24-2 CCCConnectiononnectiononnectiononnection inininin SSSSerieserieserieseries
NOTE: Output I can only be connected to Booster I. Do NOTNOTNOTNOT connect to Booster II.
Output II can only be connected to Booster II. Do NOTNOTNOTNOT connect to Booster I.
CCCC.... CableCableCableCable TestTestTestTest WiWiWiWiringringringring MMMMethodethodethodethod
FigureFigureFigureFigure 4-34-34-34-3 CableCableCableCable TestTestTestTest WWWWiringiringiringiring methodmethodmethodmethod
GDVLF-60 VLF AC Hipot Test Set
DDDD.... GeneratorGeneratorGeneratorGenerator TestTestTestTest WWWWiringiringiringiring MMMMethodethodethodethod
FigureFigureFigureFigure 4-44-44-44-4 GeneratorGeneratorGeneratorGenerator TestTestTestTestwiringwiringwiringwiring MMMMethodethodethodethod
2.2.2.2. OperationOperationOperationOperation StepsStepsStepsSteps
A.A.A.A. PowerPowerPowerPower OnOnOnOn //// PowerPowerPowerPower OffOffOffOff //// RRRReseteseteseteset
After connecting all wires, turn on the power switch.The instrument will automatically enter
into the limitlimitlimitlimit settingsettingsettingsetting interfaceinterfaceinterfaceinterface as shown in figure 5.
CautionCautionCautionCautionssss
● The power switch should be turned off in the process of wiring connection/disconnection
and when the instrument is not in working status.
● If there is no display on the screen, fuse inside the power socket should be checked first. If
the fuse has blown, please replace it with a new one based on the data in Table 1.
GDVLF-60 VLF AC Hipot Test Set
B.B.B.B. ParameterParameterParameterParameter SettingSettingSettingSetting
FigureFigureFigureFigure 5555 ParameterParameterParameterParameter SettingSettingSettingSetting
On Parameter Setting interface as shown in Figure 5, user can set frequency, testing time
and voltage, overcurrent protection value and overvoltage protection value of HV side
according to test requirement. The methods are as follows:
Press SelectionSelectionSelectionSelection, move cursor between parameters. The selected parameters can be
modified with ChangeChangeChangeChange key. Click ReturnReturnReturnReturn key, the instrument will enter into voltage boost
standby interface as shown in figure 6.
● There are three options for the frequency: 0.1 Hz, 0.05 Hz and 0.02 Hz.
● Timing modification range: 0-99 mins. Selection of timing determins the testing time.
● Range of test voltage is from 0 kV to rated voltage. When voltage reaches the set value, it
will stop boosting. Constant amplitude sine wave will be output at this peak value.
● Setting range of current protection is from 0 mA to rated current. It determins the
maximum current that flows through the test object. If the current exceeds this set value, the
output will be automatically cut off.
● Setting range of voltage protection is from 0 kV to rated voltage. It determins the maximum
voltage that flows through the test object. If the voltage exceeds this set value, the output
will be automatically cut off.
GDVLF-60 VLF AC Hipot Test Set
● SingleSingleSingleSingle and SeriesSeriesSeriesSeries connection. Selecting SingleSingleSingleSingle means that one of boosters will be used;
Selecting SeriesSeriesSeriesSeries means that both boosters will be used in series according to requirements.
C.C.C.C. StandbyStandbyStandbyStandby IIIInterfacenterfacenterfacenterface
FigureFigureFigureFigure 6666 StandbyStandbyStandbyStandby InterfaceInterfaceInterfaceInterface
The Standby Interface has three functions as follows:
(A) Press BoostBoostBoostBoost button, the instrument will enter into automatic boost procedure.
(B) Press SettingSettingSettingSetting button, the instrument will return to set limit sub-interface as shown in
Ffigure 5 to re-modify parameter.
(C) Press CheckCheckCheckCheck button to view the test data in the last nine times.
D.D.D.D. AutomaticAutomaticAutomaticAutomatic BBBBoostoostoostoost
Press BoostBoostBoostBoost button as shown in Figure 6, the instrument will enter into test mode under
microcomputer control according to the procedures as follows:
Self check→boosting→constant amplitude output→shutdown
FigureFigureFigureFigure 7777
GDVLF-60 VLF AC Hipot Test Set
(A) Self check
Detecting voltage will be output to check the system. The instrument will boost or shut-down
depend on the condition is normal or abnormal. The screen will display loadloadloadload unconnectedunconnectedunconnectedunconnected,
when the booster or the capacitor sample (DUT) is not connected or there is a failure in the
instrument.
(B) Boost
FigureFigureFigureFigure 8888
FigureFigureFigureFigure 9999
If the self-check has passed successfully, the instrument will automatically enter into
boosting status, as shown in Figure 8. It will take several cycles to increase the voltage to
the set value for the instrument. In the process of boosting, press PausePausePausePause key as shown in
Figure 8 , the boost process will be paused, and the instrument will output with constant
GDVLF-60 VLF AC Hipot Test Set
amplitude. At the same time, the PausePausePausePause key will be automatically turned into boostboostboostboost key,
which can be re-clicked to continue boosting until it reaches the set voltage. The two
functions can be used alternately and repeatedly. Press TimingTimingTimingTiming key in the process of
boosting, timing starts. Or you can wait until the voltage reaches the setting value, the
instrument will start timing automatically. Press StopStopStopStop key to stop high voltage output and
then automatically discharge the test object.
(C) Voltage fine adjustment
Press UpUpUpUp or DownDownDownDown to adjust the voltage. After pressing once, please observe at least one
cycle to proceed with next adjustment.
E.E.E.E. Shut-downShut-downShut-downShut-down
Two modes of normal shutdowns:
● Timing shutdown: The instrument will be shut down when it reaches setting timing value.
● Manual shutdown: Press StopStopStopStop key to shut down the instrument.
After that, the screen will show PassPassPassPass as in Figure 10. Generally, if current is normal,
flashover, breakdown, and over-current protection have not occurred, it is considered as
PASS.
FigureFigureFigureFigure 10101010
GDVLF-60 VLF AC Hipot Test Set
● There are also two kinds of abnormal shutdowns: overvoltage and over-current protection
shutdowns. After shutdown, the screen will show as in Figure 11 and 12. The output will be
cut off automatically and data is saved.
FigureFigureFigureFigure 11111111
FigureFigureFigureFigure 12121212
F.F.F.F. PrintPrintPrintPrint
Press PrintPrintPrintPrint key as shown in Figure 10, test report will be printed.
In historicalhistoricalhistoricalhistorical datadatadatadata checkcheckcheckcheck status, press PrintPrintPrintPrint key to get historical data results.
G.G.G.G. HistoricalHistoricalHistoricalHistorical datadatadatadata checkcheckcheckcheck
All data after shutdown, normail or abnormal, will be saved automatically. It can save
measurement data of latest nine tests. Press CheckCheckCheckCheck key as shown in Figure 6, latest nine
times historic can be viewed.
GDVLF-60 VLF AC Hipot Test Set
VI.VI.VI.VI. SafetySafetySafetySafety NoticeNoticeNoticeNotice
1. If there are any faults of the instrument, please contact HV Hipot for maintenance. Do not
replace any parts by yourself.
2. After shutdown, please use the discharge rod to discharge the test object, and then
remove the wirings.