Sanwa MG1000 Instructions Manual

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G1000/MG500/MG125NSULATION RESISTANCE TESTERTY PRECAUTIONSe use, read the following safety precautions.for purchasing the Sanwa MG1000/MG500/MG125 digital insulationtester. Before use, please read this manual thoroughly to ensuresafe use. Keep this Instruction Manual together with the product.read the information under “ WARNING” that is intended to preventury such as burn and electric shock and other serious accidents.nation of Warning Symbolsg of the symbols used in this manual and attached to the product isportant instructions for safe usearning messages are intended to prevent accidents to operatingnel such as burn and electric shock.aution messages are intended to prevent incorrect handling andrement which may damage the product.rous voltagesd. : DC. : AC.Double or enhanced insulation.ng Messages for Safe UseNGg instructions are intended to prevent personal injury such as burn andck. Be sure to follow them when using the tester:INSTRUCTIONS1-3 Overload protectionThe maximum rated input value and overload protection have been defined forthe input terminals of each function as shown below.Function Max. Rated Input Overload ProtectionMΩ - MΩ range: Within 120% of the rated measuring voltage.V 600Vrms 780Vrms4000 Ω - 600Vrms40 Ω - Fuse, 0.5 A/600 VOvervoltage measurement categoriesOvervoltage measurement category I (CAT. I ) :Line on the secondary side on the inside of equipment via a transformer, etc.from the receptacle.Overvoltage measurement category II (CAT. II ) :Line on the primary side of equipment with power cord to be connected to thereceptacle.Overvoltage measurement category III (CAT. III ) :Line from the primary side or branch of equipment which directly takes inelectricity from a distribution board to the receptacle.Overvoltage measurement category IV (CAT. IV ) :Line from the service conductor to the distribution board.[2] APPLICATIONS AND FEATURES2-1 ApplicationsThis instrument is a DC insulation resistance tester for use in measurement ofinsulation resistance of a power line and power equipment within the range of600 V under CAT III.2-2 Features• Safety design in compliance with IEC61010-1• MΩ function with automatic live circuit detection (>30V AC/DC)• Easy-to-read display showing large figures and log bar graph for reading in ananalog feeling• Automatic hold function to hold the last displayed value to look it safely aftermeasurement• LCD panel with backlight function• Auto discharge function• 40.00 Ω measurement function ( 200 mA short circuit current)[3] NAMES AND FUNCTIONS OF COMPONENT UNITSWARNINGuse the tester on a high-power or high-voltage line.es above 70 VDC or 33 Vrms AC (46.7 V peak) are hazardous ton body. Never touch them.nect circuit power before testing insulation resistance.ution with the high voltages output when performing insulationance measurement to avoid electric shock.vent electric shock, always discharge capacitive circuits after thetion resistance measurement.input signals exceeding the maximum rated input value (see 1-3).use the tester for measuring voltages of lines connected toment (e.g. motors) that generates induced or surge voltage since itxceed the maximum allowable overload input.use the tester if the tester or test leads are damaged or broken.use the tester with the rear-case or battery lid removed.using the test leads, keep your fingers behind the finger guards.measurement, do not change the function or range nor replace the.use the tester when it is wet or with wet hands.e to use the fuse of the specified rating and specification.touch the metallic part of the alligator clip connected to groundings voltage is present.connecting the alligator clip, connect it to the grounding side of thet to be measured first. When disconnecting it, disconnect the testrom the line first, and then disconnect the teat lead from theding side of the measured object.attempt repair or modification, except for battery and fuse replacement.t the tester at least once a year.ster is for indoor use only.use the tester near equipment that generates strongomagnetic waves or is charged.CAUTIONeasuring terminals output high voltages during insulation resistanceurement.vent damaging the tester and parts (including chips) with low or unknownanding voltages, connected to the measured electrical path (circuit), it ismended to disconnect them from the electrical path beforeurement. This care is specially important with computer equipment.ted measuring voltage used in insulation resistance measurementd be as close as possible to the operating voltage of the circuitry toure. For example, when measuring an electrical path of 100 V, it ismended to use a tester with a rated measuring voltage of 125 V.Instrument body LCD panelTest lead (TL-112)Strap (ST-50)When pressed for more than 2 seconds, continuoustest voltage is output and indication appears. Torelease the lock, press the LOCK or MEASURE button,the test voltage output is stopped, the circuit under testis discharged automatically, and the last displayedvalue appears on the display together with theindication.40 Ω measurement function:When pressed for more than 2 seconds,indication appears and the tester continues measuring.To release the lock, press the LOCK or MEASUREbutton. The measurement is stopped and the lastdisplayed value appears on the display together withthe indication.Turns backlight on/off. The backlight goes offautomatically after 10 seconds.Zero Ohm adjustment for 40 Ω measurement functionor when selecting the maximum MΩ measurementfunction.Turns the tester ON/OFF or to select a function. Thebody cover cannot be closed unless this switch is set tothe OFF position.Lights up in MΩ measurement function. It blinks whenthe test voltage drops below rated value.Lights up when the input is about 30 V AC/DC or more.It can be used as the live circuit detection, etc.Space to store the test leads and alligator clips.To attach a strap.Numeral and decimal pointAC voltage operation indicatorNegative value indicatorMΩ measurement function:Lights up when the tester outputs test voltage.Lights up when the object to be measured is chargedabout 30 V or more.V measurement function:Lights up when the input is 600 Vrms or more.DC voltage operation indicator.Auto Power Save mode indicatorThe tester enters “power save mode” automatically if ithas not been operated for about 30 minutes. The testercome out of “power save mode” when power/functionswitch is turned to OFF once and set to the requiredfunction again.To cancel Auto Power Save function, turn thepower/function switch from OFF position to any desiredfunction while holding the LIGHT button pressed.*A small electric current from power supply is presentin Auto Power Save mode. Be sure to set thepower/function switch to “OFF” after measurement.Data Hold indicatorTest lock (continuous test voltage output) indicator0 Ω adjustment indicatorLow battery warning indicator:Appears when the internal batteries are exhausted (toabout 7.2 V or less). When the indicator appears orblinks, replace the batteries with new ones.Unit indicators.Logarithmic bargraphDisabled in the 40 Ω measurement functionLOCK buttonLIGHT button0Ω ADJ buttonPower/functionswitchRATING VOLTAGEindicatorALARM indicatorTest lead storage spaceStrap hook4-2 Measurement Range and AccuracyTemperature 23 ± 5°C, humidity 45% to 75% RH.rdg: Reading. dgt: Digits4-2-1 Insulation resistance measurement functions (kΩ , MΩ)Model:MG1000Model:MG500Nominal test voltage &Measurement Range250V4.000MΩ/40.00MΩ400.0MΩ/4000MΩ500V4.000MΩ/40.00MΩ400.0MΩ/4000MΩCenterscale10MΩ1st effectivemeasurement range 0.5 20.00MΩ ±(3%rdg+4dgt)2nd effectivemeasurement range1st effectivemeasurement range2nd effectivemeasurement range1st effectivemeasurement range2nd effectivemeasurement range0 0.49MΩ20.01 4000MΩ ±(5%rdg+5dgt)100MΩ1.000 500MΩ ±(3%rdg+4dgt)0 0.999MΩ501 4000MΩ ±(5%rdg+5dgt)1000V4.000MΩ/40.00MΩ400.0MΩ/4000MΩ100MΩ2.000 1000MΩ ±(3%rdg+4dgt)0 1.999MΩ1001 4000MΩ ±(5%rdg+5dgt)Measurement Range AccuracyOpen circuit voltage 1 to 1.3 times of nominal test voltageRated measurement current 1.0-1.2 mA (250 V @0.25 MΩ, 500 V @0.5 MΩ, 1000 V @1 MΩ)Short-circuit current 2mA or lessLive circuit detection At 30V AC/DC or more, inhibits test, buzzer sounds andALARM indicator lights up.Nominal test voltage &Measurement RangeCenterscale10MΩ1st effectivemeasurement range ±(3%rdg+4dgt)2nd effectivemeasurement range1st effectivemeasurement range2nd effectivemeasurement range1st effectivemeasurement range2nd effectivemeasurement range±(5%rdg+5dgt)100MΩ±(3%rdg+4dgt)±(5%rdg+5dgt)100MΩ±(3%rdg+4dgt)±(5%rdg+5dgt)Measurement Range AccuracyOpen circuit voltage 1 to 1.3 times of nominal test voltageRated measurement current 1.0-1.2 mA (125 V @0.125 MΩ, 250 V @0.25 MΩ, 500 V @0.5 MΩ)Short-circuit current 2mA or lessLive circuit detection At 30V AC/DC or more, inhibits test, buzzer sounds andALARM indicator lights up.125V400.0kΩ4.000MΩ/40.00MΩ400.0MΩ/4000MΩ250V400.0kΩ4.000MΩ/40.00MΩ400.0MΩ/4000MΩ20.0kΩ 10.00MΩ0 19.9kΩ10.01 4000MΩ50.0kΩ 20.00MΩ0 49.9kΩ20.01 4000MΩ500V400.0kΩ4.000MΩ/40.00MΩ400.0MΩ/4000MΩ1 500MΩ0 0.999MΩ501 4000MΩModel:MG125Nominal test voltage &Measurement RangeCenterscale1MΩ1st effectivemeasurement range ±(3%rdg+4dgt)2nd effectivemeasurement range1st effectivemeasurement range2nd effectivemeasurement range1st effectivemeasurement range2nd effectivemeasurement range±(5%rdg+5dgt)1MΩ±(3%rdg+4dgt)±(5%rdg+5dgt)1MΩ±(3%rdg+4dgt)±(5%rdg+5dgt)Measurement Range AccuracyOpen circuit voltage 1 to 1.3 times of nominal test voltageRated measurement current 1.0-1.2 mA (25V@ 0.025MΩ, 50V@0.05MΩ, 125V@0.125MΩ)Short-circuit current 2mA or lessLive circuit detection At 30V AC/DC or more, inhibits test, buzzer sounds andALARM indicator lights up.[4] SPECIFICATIONS4-1 General SpecificationsGrounding/COM terminal for connecting the blackalligator clip.Line/+ terminal for connecting the red test lead.Displays the value, function name or voltage outputstatus.MΩ measurement function:• Press and hold the button to output the test voltage.When the button is released, the test voltage outputis stopped, the circuit under test is dischargedautomatically, and the last displayed value appearson the display together with the indication.• When the button is pressed during continuous testvoltage generation using the LOCK button, the testvoltage is stopped, the last displayed value is held,and the circuit under test is discharged automatically.40 Ω measurement function:• Press and hold the button to start measuring. Whenthe button is released, the test voltage output isstopped and the last displayed value is held appearson the display together with the indication.• When the button is pressed during continuousmeasurement using the LOCK button, themeasurement is stopped and the last displayed valueis held.Name DescriptionEARTH/COM terminalLINE/+ terminalLCD panelMEASURE button25V400.0kΩ/4.000MΩ40.00MΩ/400.0MΩ50V400.0kΩ/4.000MΩ40.00MΩ/400.0MΩ10.0kΩ 5.00MΩ0 9.9kΩ5.01 400.0MΩ10.0kΩ 5.00MΩ0 9.9kΩ5.01 400.0MΩ125V400.0kΩ/4.000MΩ40.00MΩ/400.0MΩ20.0kΩ 10.00MΩ0 19.9kΩ10.01 400.0MΩNoteWhen the displayed value is 2000 MΩ or more, the lowermost digit is fixed at 0.SANWA ELECTRICINSTRUMENT CO., LTD.Dempa Bldg, 4-4 Sotokanda2-ChomeChiyoda-ku, Tokyo, Japan“OL” indication on LCDV function: 780V or overMΩ, 4000Ω, 40Ω function: Approx. 4200 count or overAC SensingLCDSampling ratePolarity indicationLow battery indicationEnvironmental conditionPower supplyAverage value4200 count with log bar graphApprox. 2 times / sec.“ ” indication only when negative input“ ” lights or flickers at about 7.7V-7.2V or belowAltitude 2000m or below, pollution degree IIAuto onlyRange up: approx. 4200 count or over,Range down: approx. 380 count or belowRange selectionOver-range indicationOperating temperature /humidity0°C to 40°C and maximum relative humidity 90%(No condensation)Storage temperature /humidity-10°C ~ 50°C, 70%RH or below (with battery removed).R6 1.5V x 6 pcs (MG125, MG500) ; LR6 1.5V x 6 pcs (MG1000)DimensionsWeightPower consumptionAccessoriesOptional accessories170 (L) X 142 (W) X 57 (H)Approx. 600g (battery included)Apporox. 7mA at V functionBattery (built-in), test leads (TL-112), Strap (ST-50), instruction manualAlligator clip CL-16Safety / EMC IEC61010-1 CAT.III 600V, IEC61557-1/2/4, IEC61326 (EMC),IEC60529-IP54, IEC61010-031 (TL-112)MG125, MG500 : Approx. 5 hoursMG1000 : Approx. 2 hours 30 minutesTime ofmeasurementTest pinFingerguardPlugAB

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