FUZRR ES3035 User manual

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CONTENT
ISafety Precautionsand Procedures…………………………………………3
II Introduction……………………………………………………………………4
III.Rang andAccuracy……………………………………………………………5
IV .TechnicalSpecifications……………………………………………………6
V. Structure …………………………………………………………………………8
VI.Measuring Principle……………………………………………………………9
VII.OperationMethod………………………………………………………………9
1Power On/Off……………………………………………………………………9
2Battery Voltage Check………………………………………………………9
3DC Voltage Test………………………………………………………………9
4AC Voltage Test………………………………………………………………10
5InsulationResistanceTest…………………………………………………10
6GUARD UseofProtectiveWires……………………………………………12
7PolarizationIndex（PI）and Absorption ratio(DAR) ………………12
8BacklightControl……………………………………………………………15
9AlarmSetting……………………………………………………………………15
10 Data Lock/Storage……………………………………………………………16
11 DataReview/Deletion…………………………………………………………16
VIII BatteryDescription………………………………………………………17
IX Accessories……………………………………………………………………17

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I.SafetyRulesand Precautions
Thankyoufor purchasingourcompany's digital high-voltageinsulation
resistance meter.Beforeyou usethisinstrumentforthefirsttime,inorder
toavoidpossibleelectricshockorpersonalinjury,pleasebe sure toread
and strictly observe the safety rulesand precautions listed inthis manual..
Inanycase,theuseofthis instrument should pay special attentionto
safety.
uThe testerisconformingtoIEC61010 on design,productionand test.
uUnderanycircumstance, itshallpayspecialattention onsafetyinuse
of thistester.
uPleasedon’tusehigh-frequencysignalgeneratorslikemobilephoneand
etc.toavoiderror during measuring.
uPay attentiontowords and symbolsstick on theTester.
uItshall makesurethattester andaccessoriesareingoodconditionbefore
use; it can beused onlywhen thereisno damaged, nakedor broken partin
testingwiresorinsulationlayer.
uDuring measurement,it is forbidden totouchbare conductors and circuit
under measurement.
uConfirmthatconnectorplugofleadhasbeeninsertedinthetester
interface closely.
uPlease don’timpose over 600VA.C. or D.C. voltageonthepart between
testingend and interface. Otherwise, it mayhave damage on the tester.
uPleasedon’t measurein aninflammable place.Theflame sparkle maybe
cause explosion.
uDuring usage of tester,please stopusingitwhen exposed metal is caused
by broken enclosure or testingwires.
uPlease don’tkeep or store the tester in the spotwithhigh-temperature
and moisture, orcondensation, and underdirectdaylightradiationfora
longtime.
uForreplacing battery, pleaseconfirmtestingwirehasmovedapart the
meter, andFUNCTION SWITCHrotaryswitchisin “OFF”position.
uPlease putthe used batteries in appointed collection place.
uWhen replacing the batterywith the meter, makesure thatthetest line
has been removedfromthe meter andthe meter is turnedoff.
uWhen the meter displaysbattery low voltage symbol“”， should charge
in time, otherwiseitwill lead togrounderror.
uDonot chargeorperformdatatransmissionduring themeasurementprocess.
uDonotmakemeasurementswhen thebatterycover isopenand duringthunder.
uPay attention to measuringrangeandusage environmentstipulatedforthe
Tester.
uThismeasuringdeviceisonlytobeused,disassembled,adjustedand
repaired by qualifiedpersonnel with authorization.
uWhen itmaycause hazard bycontinuous use for the reasonof the Tester
itself,itshallimmediatelystopusingitanddeposititatonce,leaving
it for disposal byauthorized agency.
uForriskof dangericonin manual , usersmustperform safetyoperations

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strictly in compliance withthe manualcontent.
uTheinstrumentoutputhighvoltage,pleasebe sureto connect the test
line handtoleave thetest line beforepressingthe testbutton totest,
otherwise there isdanger of electric shock.
uAfterthetestiscompleted,waitforoneminuteforthedischargeto
completebeforeremovingthetestline.Whenremovingthetestline,first
remove thetest line of themeterand then collectthe test line.
II. Introduction
Digitalinsulation resistancemeter alsoknown as megohmmeter, high
voltageinsulationresistancetester,etc.,fortheinsulationresistance
test.TheinstrumenthasalargeLCDscreengray backlitdisplay,datastorage,
dataaccess,alarm,automatic shutdownandotherfunctions.At thesametime,
it alsohas the functionofmeasuring AC voltage absorption ratio and
polarization index of DC voltage. Themachine is beautifuland upscale,has
awide range,highresolution,convenientoperation,easy to carry,accurate,
reliable, stableperformance, stronganti-interference ability. Moreover,
ithasashockproof, dustproof, moisture-proof structureandis acommonly
usedand indispensable instrumentfor telecommunications, electricity,
meteorology,computerrooms,oilfields,electromechanicalinstallationand
maintenance, andindustrialenterprisesthatuseelectricity as industrial
powerorenergy.Itissuitablefor measuring theresistance value ofvarious
insulating materials and the insulation resistanceof transformers, motors,
cables andelectricalequipment.
Digitalinsulation resistance meter consists of medium and large scale
integrated circuits. The output powerofthewatch is large, and the output
voltagelevelisalot(with6voltagelevels).Ratedinsulationtest voltage
range100 ~5000V, insulation resistance measurement range 0.01MΩ~ 1000G

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Ω.DCvoltage measurement range0~1000V, AC voltage measurementrange 0
~750V
。
III Measuring Rangeand Accuracy
Test
Function
Output
Voltage MeasureRange Accuracy Resoluti on
Insulation
Resistance
100V(±10%)
0～10MΩ
±3%rdg±5dgt 0.01MΩ 10～100MΩ0.1MΩ
100～1000MΩ1MΩ
1G～10GΩ±5%rdg±5dgt 0.01GΩ
250V(±10%)
0～10MΩ
±3%rdg±5dgt 0.01MΩ 10～100MΩ0.1MΩ
100～1000MΩ1MΩ
1G～10GΩ±5%rdg±5dgt 0.01GΩ
500V(±10%)
0～10MΩ
±3%rdg±5dgt 0.01MΩ 10～100MΩ0.1MΩ
100～1000MΩ1MΩ
1G～10GΩ±5%rdg±5dgt 0.01GΩ
1000V(±10%)
0～20MΩ
±3%rdg±5dgt 0.01MΩ 20～200MΩ0.1MΩ
200～2000MΩ1MΩ
2G～20GΩ±5%rdg±5dgt 0.01GΩ
2500V(±10%)
0～2000MΩ±3%rdg±5dgt 1MΩ
2000MΩ～20GΩ±5%rdg±5dgt 0.01GΩ
20GΩ～200GΩ±20%rdg±10dgt 0.1GΩ
5000V(±10%)
0～2000MΩ±3%rdg±5dgt 1MΩ
2000MΩ～20GΩ±5%rdg±5dgt 0.01GΩ
20GΩ～200GΩ±20%rdg±10dgt 0.1GΩ
200GΩ～1000GΩ ±20%rdg±10dgt 1GΩ
Remark:Common electrical unitconversion
1TΩ（Teraohm）=1000GΩ=1012Ω
1 GΩ（Giga ohm）=1000MΩ=109Ω
1 MΩ（Mega ohm）=1000KΩ=106Ω

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Test
Function MeasureRange Accuracy Resolution
DC Voltage DC 0.0V～1000V ±1.5%rdg±3dgt 0.1V
AC Voltage AC 0.0V～750V ±1.5%rdg±3dgt 0.1V
IV.Technical Specifications
unction Insulation resistance test,voltagetest
Base conditions 23 C±5C，below75%rh
Rated voltage(V) 100；250；500；1000；2500V；5000V
Test Voltage(V) ratedvoltage×（1±10%）
Insulation Resistance
Range（GΩ）
0.01MΩ～1000GΩ
Insulation Resistance
Insulation
0.01MΩ
DC Voltage Range 0～1000V
DC Voltage resolution 0.1V
AC Voltage Range 0～750V
AC Voltage resolution 0.1V
Output short-circuit
Current
≥3mA(5KV)
Absorption Ratio and
Polarization Index
Measurement
Have
Power Supply 12Vrechargeablebattery

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Backlight
Controllablegrayscreenbacklight,suitableforuseindim
places
Dispaly mode 4-bitlargeLCDdisplay, grayscreenbacklight
LCD display size 108mm×65mm
Instrument size L/W/H：277.2mm×227.5mm×153mm
USB interface
With USB interface,software monitoring,storagedatacanbe
uploadedto thecomputer,savetheprint
Communication Line USB communicationline1PC
Test Line Highvoltagerob red3meter,high voltagetestlineblack
1.5meter, green1.5meter
Data Storage 500groups, "FULL"symbol indicatesthatstorageisfull
Data Review Datareviewfunction: "MR"symbol display
Overflow Display Exceedmeasurementrangeoverflowfunction: “OL ”symbol
display
Alarm unction Alarmwhenthemeasuredvalueexceedsthealarmsetting
value
Power Consumption
Standby:30mAMax(backlightoff)
Turnon backlight:42mAMax
Measure：300mAMax(backlightoff)
Instrument weight 2720g(includingbattery)
Battery voltage
Whenthebatteryvoltageislow,low batterysymbol
“”will display
Automatic shut-down automaticshutdownafter 15 minutesboot
Insulation Resistance ≥50MΩ(betweenMeasuringlineandhousing)
Pressure Resistance AC3kV/50Hz1min

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Working Temperature
and Humidity
－10℃～+50℃＜85%RH
Storage Temperature
and Humidity
－15℃～+55℃＜90%RH
Suitable for Safety
Regulations
IEC61010-1、IEC1010-2-31、IEC61557-1,5、IEC60529(IP54)
pollutiongrade2、CAT Ⅲ300V
V. Structure
1. LCD displayscreen 2. LINE interface 3. V interface
4. GUARD interface 5.EARTH interface 6. Functionbuttonarea
7. Power on/offbutton 8. Testbutton 9. changer interface
10.USB interface 11. SecurityAlligator Clip
12.Testline（green ,blackeach 1PC）
13 High voltage testterminalbanana plug into LINE interface
14.Shieldedcable connectorpluggedintoGUARDinterface(no connection
required withoutthisconnector)
15.High voltagetest line

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VI.Measuring Principle
Insulationresistancemeasurementusesavoltage generator to
generateavoltage, V,applied acrosstheresistor,measuringthecurrent
Iflowingacross theresistor, andcalculatingthegroundresistance
value Raccording to theformula R=V/I.
VII.Operation Method
1Power On/Off
PressthePOWERbuttontoturnthe switchonandoff.Afterthepower
is turned on, “APO”isdisplayed inthelower corner.When itis notin
operation,itwillautomatically shut down after 15minutes.
2Battery Voltage Check
Afterpowering on, if the LCD showsalow batteryvoltage sign “”,
it indicatesthatthebatteryis runninglow.Pleasechargein time.
Sufficientbatterypowertoensuremeasurement accuracy
3DC Voltage Test
Input instrument DC voltage cannot exceed1000V
Pressthebutton toswitchtotheDCvoltagetest mode,connectthe
greentest lead to the Vterminal, the blacktestlead tothe COM,andthe
LCD displays thereal-time DC voltage value.

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4ACVoltage Test
Input instrument AC voltage cannot exceed750V。
Whenmeasuring,turntherotaryswitchtothegear position,connect
thegreenleadto the Vterminal, theblackleadto the COM,and theLCD
displays the real-time AC voltagevalue.
5Insulation ResistanceTest
Insulation resistance test canonly be carriedout on an
uncharged circuit. Beforetesting, checkwhetherthetest
circuitwiring is in good condition and whether the circuit under
test isenergized.If thecircu
it is live,it may damage the
instrument and affect the measurement accuracy.
Must wear high-voltage insulating gloves to operate.
In the insulation resistancerange,pressthetestswitch to
generatehigh voltage in thetest line head and in the circu
it
under test. Please be carefulto avoid touching.
Be sure toconnectthegroundingwire (black)tothegrounding
port ofthe circuit under test.
Do nottouchthecircuitimmediately after testing. The stored
charge may cause electric shock.

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Do not
removethe test leadimmediately. Waituntil thedischarge
is complete before touching the circuit under test.
In order to ensurethe measurement accuracy, do not twistthe
test lines together.
Guaranteed temperature and humidityof the insulationresistanceaccuracy
Insulation
resistance
range
Guaranteed the humidity
value ofthe insulation
resistance accuracy
Guaranteed temperature of
the insulation resistance
accuracy
0Ω-100MΩ<85% RH(No condensation)
23℃±5℃
101MΩ-20GΩ<75% RH(No condensation)
21GΩ-200GΩ<65% RH(No condensation)
Insulationresistancetestcanonlybe carriedoutonanuncharged
circuit.Beforetesting, checkthat the test leads are good and confirmthat
the circuit undertest is uncharged.
Turntherotaryswitchto gear,thenpress VSEL toselectthevoltage
value to be tested.
Oneendofthegroundwire(black)is connectedtotheinstrument
connection EARTH and the other end isconnected tothe ground end of the
circuitunder test.Oneend ofthe high-voltagerod testline (red) is
connected to theotherendofthe instrument LINE andthe headisincontact
withthecircuitundertest.If thetest hasagreen branchline as ashielded
line,the accuracyofconnecting theGUARDportduring testingisbetter.
Ifthe matching test linedoes not carry thisline, it doesnotneedtobe
connected.Asshowninthefigure,pressthe TFRT test button. TheLCDshows

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the measured value.Read theinsulation resistancevalueafterthe measured
value is fixed.
6GUARD Use of Protective Wires
Whenthe insulationresistanceofthecableismeasured,theleakage
currentof thecoveredsurface passesthrough theinterioroftheinsulator
andthecurrentconverges,resultinginanerrorintheinsulationresistance
value. Inorder toavoidthisphenomenon,as shownin the figure below,use
the protection wire(anyconductivebarewire)toflow theleakagecurrent
throughthepart.Afterconnectingtotheprotection port,theleakage current
does not flow through the indicatorand the insulatorcan accurately measure
the insulationresistance.Pleaseuse theprotection testcableofthe
accessory to connect theprotectionport.
7Polarization Index（PI）and Absorption ratio(DAR)
7.1ThefunctionofPolarizationindex（PI）andAbsorptionratio(DAR)：

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ThePolarizationIndex(PI)andAbsorptionRatio(DAR)areteststocheck
whether the leakage currentof the insulatorhasincreased.Theleakcurrent
did not increase whileconfirming theapplication time. The instrument
automaticallycalculatesthepolarizationindexPIandtheabsorptionratio
DAR.Asajudgementoftheinsulationperformance,boththepolarization index
PIandtheabsorptionratio DAR indicatethechange intheinsulation
resistanceovera period oftimeafterthemeasured object withstandsthe
measured voltage.
7.2The differencebetween Polarization index （PI ）and Absorption
ratio(DAR)：
Forgeneralinsulationtests,suchashousinginsulation,toolhandles,
etc. can generally betestedin arelatively short periodof timeto increase
theleakagecurrent with the increaseofthevoltageapplication time,so
generallycanbetestedwith ashorttimetest,theshort-terminsulation
resistanceratioDARiscalled the absorptionratio(seethefollowing formula
for the specifictest time),butfor the large-capacity and long-term
absorptionprocess,suchastransformers,generators,cables,capacitorsand
otherelectricalequipment,sometimestheabsorptionratio(DAR)is not
enough toreflect the whole process ofabsorption,andtheinsulation
resistanceratiocan be usedforalongertime,thatis,the ratiobetween
theinsulation resistance(R10min)at 10minutesand theinsulation
resistance(R1min)at 1 minute describesthe entire processofinsulation
absorption, and PIiscalled the polarization index.
The PI andDAR valuesare calculated by the following formula:
Remark：1：R10Min= resistance value measured by the voltage applied for 10 minutes
2：R1Min=R60Sec=the resistance value measured by the voltage applied for 1 minutes
3 ：R30Sec=It is the resistance value measured by the voltage applied for 30 seconds
4：R15Sec=It is the resistance value measured by the voltage applied for 15 seconds
5：DAR calculation time can choose 15 seconds or 30 seconds
PI(
Polarization Index
)=
MinR MinR 1
10
DAR（Absorption ratio）=
Sec
R
SecR
15
60
DAR（Absorption ratio）=
Sec
R
SecR
30
60

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7.3Polarization index（PI）and Absorptionratio(DAR) Test
The Polarization Index(PI) andAbsorptionRatio Test(DAR) canonly be
performed onunchargedcircuits.Beforetesting, check that the test leads
are good and confirm that the circuit under test ischarged or not.
Turn the rotary switch to gear, then press VSEL to select the voltage
value to test.
Pressthe SET key tosetthecorresponding mode.TheLCDshows “10:01m”
asthe polarizationindexmode inthelowerleft corneroftheLCD, “60:15S”
asthe absorptionmode15 secondmode,and “60:30S”as the absorptionmode
30secondmode. Smallnumbers donot show anythingfortheinsulation
resistancemeasurement mode.
One end ofthegroundwire (black)is connected totheinstrument
connection EARTH and the other end is connected to the ground endof the
circuitundertest.Oneendofthehigh-pressurerodtestline(red)is
connected to theotherendoftheinstrument LINE andthe headisincontact
withthecircuit undertest, andthe TFRT testkey ispressed. The LCDdisplays
the measuredvalue.Afterthemeasured value is fixed, the absorbance or
polarization indexcan be read.
Afterthetestiscompleted,press “”toview thedivisorof the
absorptionratioor polarization indexvalue(suchas the valueof 60Sin
“60:15S”mode).Press “”to view the dividend of theabsorption ratio
orpolarization index value (suchasthe value of15S in “60:15S”mode).Press
"" or "" again to return.
7.4Polarization Index (PI) and AbsorptionRatio (DAR) Applications：
Inengineering,insulation resistance and absorption ratio (or
polarization index)can reflectthedegree of moisturein theinsulation of
generators,oil-immersedpowertransformers andotherequipment.Thevalue
oftheabsorptionratio(orpolarizationindex)decreasesafterthe
insulationiswet (seeFigure1),so it isanimportantindicatorof whether
the insulation isaffected by moisture.
Itshouldbepointed outthatsometimestheinsulation hasobviousdefects
(forexample,theinsulation breaksdown under highpressure), and the
absorption ratio orpolarizationindex value is stillgood. The absorption
ratio orpolarizationindex cannot beused tofindother localinsulation
defectsotherthanmoistureand dirt.
。

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PolarizationIndex Reference Judgment Value：
Polarizatio
n Index Above 4 4～2 2.0～1.0Below 1.0
Judge The best Good
Need topay
attention Bad
Absorption ratio reference judgment value：
Absorption
ratio Above1.4 1.25～1.0 Below1.0
8BacklightControl
After poweron,press “”keytoturnthebacklightonoroff,and
the backlightfunctionissuitable fordim places.Thedefaultbacklightturns
off every time youturn it on.
9Alarm Settings
Afterpower on, longpress “”to turnon and off the alarmfunction.
Longpress “SET”key to settheresistancealarmvalue.Press “”or
“”key to change the currentdigit size,then press “SET”key to save
and exit. Whenthemeasured voltagevalueisgreater than the alarm critical
set value or the insulation resistance value is lessthanthealarmcritical
setvalue andthe alarm functionisturnedon,theinstrumentflashesthe
“”symbol and issuesa “beep-beep-beep--”alarm sound.The maximumvalue
of the voltage alarm setting is 600V, and the maximum value of the ground

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resistancealarmsettingis9999MΩ.As shown below
10 Data Lock/Storage
Afterthemeasurementiscompleted,shortpress" MEM"keytolockthecurrent
displaydata, andautomaticallyserial storage. Ifthestorage isfull, the
instrumentdisplaysthe"FULL"symbol.Asshowninthefollowingfigure:the
measureddata is 1258m ω,and the "MEM"display is stored as the third set
of data.
11 Data Review/Deletion
Afterbootingormeasuring, press the"MEM"button(more than3seconds)
toenter the data lookup, and store thedata read interface " MR"symbol display.
Pressthe" "or" "keyto select the datacorrespondingto the arraynumber
with a step value of 1, press " "or" "to select the array number with a
stepvalueof10,andpress"MEM" to exit. See below
In the followingfigure,thenumber3isthe currentnumberof groups
and 6isthetotalnumber of groups.Ifthereisnostored data，LCDdisplay
"NULL",see the figure below.

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Inthe datareview state,pressandholdthe “MEM ”keytoenterthedata
deletion, press “”or “”to select “NO ”or “YES ”,select “NO ”
and then press “SET ”keyto not return to the datareviewstate." YES
"Press" SET "againtodeletethestoreddata. Afterdeletion,thefollowing
figure is displayed.
VIII BatteryDescription
The instrumentis poweredbya12Vbattery, whenthebatterypoweris reduced,
whenthevoltagedropsto10V, thebattery symbol""isdisplayed.Please
replace the batteryin time.Lowvoltage affects the measurement accuracy.
IX Accessories
Instrument 1PC
High pressure
rod 1PC red
High voltage
test line 2PCS（black,greeneach1）
Monitoring
Software CD 1PC
USB
communication
lineUSB
1PC
charger 1PC
Manual,
certificate
1SET

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Instrument box
1PC

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GuangZhou ZhengNeng ElectronicsTechnologyCo.
Address:2F, No.15 Baoshu Road, Taihe, Baiyun District,Guangzhou, Guangdong, China
Toll-free call：4000-1515-38
Tel：[phone]
Fax：[phone]
Post：510540
WebSite：www.znele.com