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.