IM MY10-E - Yokogawa
Contents
1. INDIA Phone 91 80 4158 6000 Facsimile 91 80 2852 1441 YOKOGAWA SHANGHAI TRADING CO LTD CHINA Phone 86 21 6880 8107 Facsimile 86 21 6880 4987 YOKOGAWA MIDDLE EAST E C BAHRAIN Phone 973 358100 Facsimile 973 336100 LTD YOKOGAWA ELECTRIC RUSSIAN FEDERATION Phone 7 095 737 7868 Facsimile 7 095 737 7869 ME OOE2. Zero adjustment screw 10 Earth terminal 11 Line terminal Side view Indicator window MEAS key BATT CHECK key Verifies if the battery voltages are within the valid ranges Protective cover fitting Zero adjustment screw ALARM LED e Discharge feature On gt Off When lit it indicates that a capacitive component in the measured object remains electrified and will light up even if measurement has been completed It turns off when discharge is complete 7 Battery cover setscrew Undo to replace batteries 8 Battery cover 9 Shoulder strap guide The shoulder strap is passed through it 0 1 oOo A OND 10 Earth terminal Connection for earth probe 11 Line terminal Connection for line probe Note e GUARD function is not a standard function 4 Before Measurement 1 Safety e Read the handling precautions in this manual carefully e Make sure it is safe before starting measurement 2 How to Read the Scale e Read the value from the top right of the scale 3 Zero Adjustment e Confirm that the pointer is at the center of the infinity sign co if it is do not press the MEAS key e If itis not adjust the pointer to indicate the center of the infinity sign cc with the zero adjustment screw using a slotted screwdriver 4 Battery Voltage Verification e Press the BATT CHECK key to make sure the battery voltages are within the valid ranges When the battely is checked the pointer must be within the
3. AC voltages e Voltage that exceeds the specified limit must not be applied to terminals 4 Probes e Use the probes supplied by Yokogawa Meters amp Instruments with this tester e Do not use probes that have deteriorated or are defective e Remove the probes from the measured object before attaching detaching the probes to from the tester 5 Insulation of Casing e A puncture in the protective insulation may occur if there are any cracks or other damage in the casing as a result of the instrument having been dropped or knocked against another object Do not use the instrument before taking the necessary remedial measures ask the manufacturer to repair it 6 The Measured Object e Turn off the power to the measured object before you begin measuring insulation resistance e Avoid touching any electrified parts while using the tester in a location with live electricity For safety it is recommended that you use a pair of rubber gloves or other alternative means 7 Operating Environment e Do not operate the tester in an atmosphere where any flammable or explosive gas is present e Do not use the tester if there is condensation on it 8 Disassembly e No person except personnel from Yokogawa Meters amp Instruments is authorized to disassemble this tester E Measurement Categories Measurement category Description Remarks I CAT I For measurements performed on circuits not directly connected to MAINS For measurements
4. correct insulation resistance 4 After Measurement N WARNING e Immediately after measurement electrical charges resulting from the applied testing voltage may remain present in the probes or measured object e The tester therefore is designed to automatically begin discharging electricity upon completion of measurement Verify that the ALARM LED turns off when discharging is complete Locking the MEAS Key for Continuous Measurement The MEAS key when pulled up to the right can be locked to ensure the key remains turned on Use this mechanism when making continu ous measurement over a prolonged period Note however that leav ing the key turned on for an unreasonably long time will accelerate the discharge of the batteries Battery Life reference only For MY10 03 at rated 500 V 100 MQ Approximately 10 hours when in continuously operation with central indication approx 2 MQ with standard supplied batteries Note The data above is typical Nevertheless the battery life varies depending on the operating conditions Check the batteries before measurement 6 Measuring AC Voltages A N WARNING Do not press the MEAS key while measuring AC voltages Otherwise it may result in a failure e Voltage that exceeds the specified limit must not be applied to terminals 1 Connecting the Earth Probe e Securely connect the earth probe to the measured objects ground line if th
5. unit the line probe and the earth probe Soft case approx 100 W x 190 H x 40 D mm 4 Replaceable type line probe 98005 Cable length 1000 mm 5 Spare probe tips for the line po probe Model 98005 2 Hard case 93015 3 Accessory bag B9108XA 600GN 58 mm general purpose 6 B9600NW 360 mm hook shaped 7 B9600NX 360 mm for extension purposes 8 B9600NZ 108 mm sharp pointed 9 B9635JK 338 mm pickax shaped 12 Battery Replacement A N WARNING e Remove the probes from the tester and then turn off the MEAS key before opening the casing to replace the batteries e Do not touch the MEAS key during replacement Otherwise a high voltage may be produced 1 Loosen the battery cover setscrew and then slide the cover off of the main unit 2 Replace all of the 4 batteries at the same time and make sure the polarities of the new batteries are exactly as shown on the battery holder 3 After replacing the batteries attach the battery cover and tighten the setscrew CAUTION e Do not mix batteries of different types or new batteries with used ones e Always remove the batteries if the tester will not be used for a prolonged period of time If you store the tester with the batteries left installed fluid is likely to leak from them resulting in a malfunctioning of the instrument 13 Maintenance E Storage Conditions e Temperature and humidity 10 C to 60 C at 70 RH or less e Remove the bat
6. BATT mark e Ifthe batteries are low replace them as specified in the battery replacement section of this manual 5 Connecting the Probes e Plug the earth probe into the earth terminal e Plug the line probe into the line terminal A N WARNING e Remove the probes from the measured object before attaching detaching the probes to from the tester e Make sure the MEAS key is off when attaching detaching the probes to from the tester 5 Measuring the Insulation Resistance 1 Before Connecting the Probes A N WARNING e Turn off the power to the measured object before connecting the probes or measuring insulation resistance e Electrical charges may be present in the cables attached to or metal of the electrical equipment being tested Verify that the equipment is free from electrical charges before connecting the testing terminals 2 Connecting the Earth Probe e Securely connect the earth probe to the measured objects ground line if the measured object is not grounded this process may be omitted 3 Connecting the Line Probe e Bring the line probe into contact with the measured object and then press the MEAS key The pointer indicates the insu lation resistance of the measured object Note During measurement exercise care to prevent the leadwire of the line probe from coming into contact with the ground floor or any other object Not observing this precaution may result in a failure to measure the
7. Model MY10 Insulation Resistance Tester Thank you for purchasing the Yokogawa Meters amp Instruments MY10 Insulation Tester To optimize all the functions of the instrument please read this manual thoroughly before operating it Store this manual in a safe place for future reference 1st Edition Jan 2000 YG All Rights Reserved Copyright 1999 Yokogawa M amp C Corporation YOKOGAWA Yokogawa Meters amp Instruments Corporation IM MY10 E 6th Edition Dec 2006 KP E About This Manual The contents of this manual are subject to change without prior notice Under absolutely no circumstances may the contents of this manual be transcribed or copied in part or in whole without obtaining permis sion Every effort has been made to ensure accuracy in the preparation of this manual Should any errors or omissions come to your attention however please inform Yokogawa M amp C Corporation accordingly 1 Safety Precautions Always observe the following instructions Failure to do so may result in electric shock or other dangers that may lead to serious injury or the loss of life Yokogawa Meters amp Instruments Corporation is in no way liable for any damage resulting from the user s mishandling of the tester For safe use of this tester the following safety symbols are used in the user s manual UN WARNING Indicates a hazard that may result in the loss of life or serious injury of the user unless the describe
8. d instruction is abided by N CAUTION Indicates a hazard that may result in an injury to the user and or physi cal damage to the product or other equipment unless the described instruction is abided by Note This provides important information for handling the tester and clari fies tester functions The following symbols are used on the MY 10 tester Danger Handle with Care This symbol indicates that the operator must refer to an explanation in the user s manual in order to avoid risk of injury or death of personnel or damage to the tester AN High voltage Terminal This symbol indicates a dangerous voltage level terminals with volt ages exceeding 1000 volts must be so marked Never touch the termi nals no AC Voltage This symbol indicates the presence of an AC voltage o Double Insulation This symbol indicates double insulation A N WARNING E Always observe the following instructions Failure to do so may result in electric shock or other dangers that may lead to serious injury or the loss of life 1 During Measurement of Insulation Resistance e A high voltage is present at the probes Do not touch the measured object or the earth or line terminal 2 Immediately After Measurement of Insulation Resistance e The probes or the measured object may remain highly charged Do not touch them immediately after the completion of measurement 3 During Measurement of AC Voltages e Do not press the MEAS key while measuring
9. e measured object is not grounded this pro cess may be omitted 2 Connecting the Line Probe e Bring the line probe into contact with the measured object The pointer indicates the AC voltage Read the value on the voltage mea surement scale V If the voltage of 20 V AC or more is present between the earth and line terminals the ALARM LED turns on Note When measuring insulation resistance the tester can also be used to verify that there is no voltage present at the measured object 7 Specifications mod MY10 01 MY10 02 MY10 03 MY10 04 MY10 05 125 V 20 M Q 250 V 50 M Q 500 V 100 M Q 500 V 1000 M Q 1000 V 2000 M Q Q 2MQ Central Indication 0 5MQ 1 1st Effective Measuring Range 2nd Effective Measuring Range 20M Q 50M Q 2to 1000 MQ 0 02 to 10 MQ 0 05 to 20 MQ 0 1 to 50M Q 1 to 500 M Q 0 5to1MQ 1to2MQ 500 to 1000 M Q 1000 to 2000 M Q 0 01 to 0 02 M Q 0 01 to 0 05 M Q 0 05 to 0 1M Q 10 to 20MQ 20 to 50M Q 50 to 100 MQ Lower Measuring Limit of 0 125MQ 0 25MQ 0 5MQ TMQ 2MQ Resistance Rated Current AC Voltage Measuring Range E First and second effective measuring ranges Central indication P O lt 1 gt Tolerances under the above conditions Resistance measurement 5 of reading within the 1st effective measuring range 10 of reading within the 2nd effective measuring range Infinity and zero indications 0 7 or less of scale length AC voltage 10 of the maximum value No load v
10. n from infinity and zero indications when ambient temperature is varied from 20 C by 20 C Within tolerance When the tester is left for 1 hour with the humidity at 90 RH aari indicati The change of indication when an external field of 400 A m DC is Se OESS Or INACANON applied in the most affected direction A change when a capacitor with 5uF 10 is connected in parallel to a resistor corresponding to central indication connected o When tested at 500 V if the rated measuring voltage is 500 V or less or Insulation resistance 50MQ or more between electric circuits and outer case at a voltage identical to the rated voltage if the rated voltage exceeds 500 V Dielectric withstand voltage Resistance to vibration Resistance to shock The specifications for tolerances friction and the effect of tilting must be met There are no mechanical and electrical damage There must not be an abnormality When a sine wave or the like is applied between the electric circuits between electric circuits and outer case and the outer case at 5550 V AC and 50 60 Hz for 1 minute The specifications for tolerances friction and the effect of tilting must be met There are no mechanical and electrical damage When a vibration frequency of 16 7 Hz and peak to peak amplitude of 4 mm is applied in the direction of the axis of the moving part for 1 hour When shock of 1000 m s is applied twice in the direction of axis of the moving part and in a direc
11. oltage Within 130 of the rated voltage Short circuit current 12 mA or less Scale length Approx 78 mm 1 to 1 2 mA 1 to 1 2 mA 1 to 1 2 mA 0 5 to 0 6 mA 0 5 to 0 6 mA 0 to 250 V 0 to 300 V 0 to 500 V 0 to 500 V 0 to 500 V lt 1 gt 1st effective measuring range lt 2 gt 2nd effective measuring range The values which belong to both the first and second ranges in the table above are included in the first range Standard test conditions Ambient temperature and humidity 23 5 C at 45 to 75 RH Position Horizontal within 5 degrees Influence of external magnetic field Earth magnetism Battery Voltage Within effective range for the battery When the battery is checked the pointer must be within the BATT mark Response time From the instant the resistors whose values correspond to central 3 sec or less indication and zero indications are abruptly connected to when the pointer reaches a level within tolerance Eff f inclinati 20 or fth le lenath Deviation from the infinity indication when the tester is tilted from ects of inclination o or less of the scale lengt a horizontal position by 30 degrees 1 5 or less Effect of temperature 2 0 7 or less of scale length Effect of humidity Effect of external magnetic field Effect of AC component of measuring terminal voltage 10 or less of indication 1 Deviation from central indication when ambient temperature is varied from 20 C by 20 C 2 Deviatio
12. performed on circuits directly connected to the low voltage installation Appliances portable equipments etc For measurements performed in the building installation Distribution board circuit breaker etc WV CAT IV For measurements performed at the source of the low voltage installation Overhead wire cable systems etc Internal Wiring Entrance LEQ o pa Cable 7 T CATV Equipment 2 Measuring Functions and Additional Features E Measuring Functions e Measuring the insulation resistance e Measuring AC voltages sine wave at 50 60 Hz E Additional Features e Discharge feature The tester is designed to begin discharging when the MEAS key is turned off The ALARM LED turns off when discharging is complete e Battery check This function verifies if the battery voltages are within the valid ranges When the battely is checked the pointer must be within the BATT mark e Phosphorescent scale plate The indicator window lights up according to the intensity of light e Locking the MEAS key Pulling the MEAS key up allows for continuous measurement over a prolonged period of time 3 Components and Their Functions Rear view Front view 1 Indicator window 6 ALARM LED 9 Shoulder strap guide 2 MEAS key ae 4 Protective cover fitting 8 Battery cover 7 Battery cover setscrew 3 BATT CHECK key 5
13. teries before storing the tester e Avoid storing the tester in a location where there is moisture exposure to direct sunlight a high temperature heat source nearby exposure to severe mechanical vibrations a large amount of dust and or salt or a corrosive gas E Removal of Dirt Do not use volatile solvents such as paint thinners or benzine as they are likely to cause discoloration Wipe off dirt with a cloth dampened water or alcohol E Calibration Cycle It is recommended that the tester be calibrated once every year for correct operation ask Yokogawa M amp C to do the periodic calibration for you YOKOGAWA Yokogawa Meters amp Instruments Corporation Yokogawa Meters amp Instruments Corporation International Sales Dept Tachihi Bld No 2 6 1 3 Sakaecho Tachikawa shi Tokyo 190 8586 Japan Phone 81 42 534 1413 Facsimile 81 42 534 1426 YOKOGAWA CORPORATION OF AMERICA U S A Phone 1 770 253 7000 Facsimile 1 770 251 2088 YOKOGAWA EUROPE B V THE NETHERLANDS Phone 31 334 64 1611 Facsimile 31 334 64 1610 YOKOGAWA ENGINEERING ASIA PTE LTD SINGAPORE Phone 65 6241 9933 Facsimile 65 6241 2606 YOKOGAWA AMERICA DO SUL S A BRAZIL Phone 55 11 5681 2400 Facsimile 55 11 5681 1274 YOKOGAWA MEASURING INSTRUMENTS KOREA CORPORATION KOREA Phone 82 2 551 0660 to 0664 Facsimile 82 2 551 0665 YOKOGAWA AUSTRALIA PTY LTD AUSTRALIA Phone 61 2 9805 0699 Facsimile 61 2 9888 1844 YOKOGAWA INDIA LTD
14. tion Cover and Shoulder Strap The tester comes with a protection cover and shoulder strap as standard accessories e The protection cover can be used as a front cover for the indicator window or as a bottom cover It is set as the front cover when delivered from the factory e Using the shoulder strap allows you to position the tester in front of your chest for ease of reading Pass the strap through the shoulder strap guide and adjust the length of the strap to allow you a good view of the tester e Remove the cover from the front and attach it to the bottom using Protection cover fixing holes Shoulder strap of the cover This is useful when the scale is too close to your body to see clearly See the figure on the right e A belt on the cover which is fitted with pieces of Velcro can be used to store the probes Remove the probes from the tester terminals when storing them Shoulder strap guide 10 External Dimensions Main unit 52 5 2 07 103 4 06 Unit mm Earth probe approx inch 1200 47 24 Line probe 1200 47 24 11 Accessories E Standard Accessories Name Model No Quantity Protection cover 93013 1 Shoulder strap 99005 1 Line probe 98001 1 Earth probe 98002 1 Batteries 4 User s manual IM MY10 E 1 E Optional Accessories Name Model No Description 1 Spare probe tip for the line 99011 105 mm breaker pin probe Model 98001 P Houses both the main
15. tion perpendicular to the axis ae _ When a resistor corresponding to the central indication is connected The specifications for tolerances and friction must be met across the measuring terminals and the power switch is repeatedly turned on and off 10 000 cycles at a rate of about 300 cycles hour Input over voltage tecti There must not be an abnormality protection When an AC voltage of 50 60 Hz at 1 2 times the rated measuring voltage is applied to the measuring terminals for 10 seconds 8 General Specifications Operation temperature 0 to 40 C at 90 RH or less no condensation and humidity Storage temperature 10 to 60 C at 70 RH or less no condensation and humidity Battery AA size 4 R6 External dimensions Approx 125 W x 103 H x 52 5 D mm Weight Approx 500 g main unit and batteries only Approx 600 g main unit batteries protective cover earth probe and line probe EN61010 1 EN61010 2 31 Insulation class II Pollution degree 2 Measurement category Ill maximum input voltage 600 V EN55011 ClassB Group EN61326 ClassB At the strength of radio frequency electromagnetic field of 3 V m e Insulation resistance measurement 1st effective measuring range 10 of rdg 2nd effective measuring range 20 of rdg Infinity and zero indications 1 4 or less of scale length AC Voltage measurement 10 of FS Safety standards EMC Standard Effect of radiation ilmmunity 9 Using Protec
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