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Radio-Service E6-32 Operation Manual

Insulation resistance testers / megohmmeters
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"RESEARCH AND PRODUCTION COMPANY "RADIO-SERVICE" JSC
RCP 422160
INSULATION RESISTANCE TESTERS / MEGOHMMETERS
Е6-32, Е6-31 and Е6-31/1
OPERATION MANUAL
RAPM.411218.002OM
Revision No. 2

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Summary of Contents for Radio-Service E6-32

  • Page 1 "RESEARCH AND PRODUCTION COMPANY "RADIO-SERVICE" JSC RCP 422160 INSULATION RESISTANCE TESTERS / MEGOHMMETERS Е6-32, Е6-31 and Е6-31/1 OPERATION MANUAL RAPM.411218.002OM Revision No. 2...
  • Page 2 This Operation Manual is intended for studying of structure and operating principle of the digital Insulation resistance testers / megohmmeters Е6-32, Е6-31 and Е6-31/1 (hereinafter referred to as instrument) and contains the data relevant for proper operation, safety precautions, verification and passport. Megohmmeter Е6-32 belongs to group 4, megohmmeters Е6-31 and Е6-31/1 belong to group 5 as per GOST 22261.
  • Page 3 1. DESCRIPTION AND OPERATION 1.1. Designation of instrument Instrument is intended for electric resistance measurement of insulation resistance of circuits that are not under voltage. Instrument measure AC voltage in case of its presence at measuring object. Megohmmeter Е6-32 additionally measures the following: continuity of earth connections and equipotential bonding (hereinafter referred to as continuity);...
  • Page 4 Table 1 – Basic metrological characteristics (Table continuation) 3 Voltage measurement Measurement range of effective voltage value of AC with 40 to 700 frequency 50 Hz, V Maximum permissible reference absolute accuracy of  (0.05×U+ 3 digits) measurement of AC voltage with frequency 50 Hz, V 4 Measurement of varistor voltage (classification voltage) (Е6-32 only) Maximum permissible absolute error of “1 mA”...
  • Page 5 1.3.4. Instrument record results of the last measurement and display it in the mode “Memory View”. Additionally megohmmeter Е6-32 stores up to 10000 measurement results with the possibility of data exchange with external device (computer). 1.3.5. Instrument use measurement results of insulation resistance at the moments 15±1 s and 60±1 s (from beginning of measurement) for calculation of Dielectric Absorption Ratio.
  • Page 6 1.4. Completeness Components of megohmmeter delivery set are given in Table 2. Table 2 – Delivery set Description and designation Quantity 1 Megohmmeter Е6-32 (Е6-31, Е6-31/1) 2 Operation Manual RAPM.411218.002OM 3 Power unit 4 Cable set, including: measuring cable RLPA.685551.002 – red, 1.5 m long; measuring cable RLPA.685551.002-03 –...
  • Page 7 Spark-gap breakdown voltage measurement (Е6-32 only) is based on gradual increase of voltage delivered to discharge arrester under testing and its recording at achieving the specified current strength via discharge arrester. General view of Е6-32, Е6-31 и Е6-31/1 is given in Figure 1.1. Figure 1.1 –...
  • Page 8 Figure 1.2 – Layout of connectors and control of instrument Е6-32 1…4 – jacks for cables connection; 5 – LCD display; 6 – button switches megohmmeter on and off; 7 – button calls a memory function (writing, reading, deletion, transmission of measured values to a computer);...
  • Page 9 Arrangement of Е6-31, Е6-31/1 controls and connectors of measuring cables is given in Figure 1.3. Figure 1.3 – Layout of connectors and controls of instrument Е6-31 and Е6-31/1 1…4 – jacks for cables connection; 5 – segment indicator of measured value and measurement units (“V” – Volt, “K” – kΩ, “M”...
  • Page 10 Appearance of shielded measuring cable is given in Figure 1.4. Combined plug: signal wire to the socket “-“, cable shield to the socket “Е” Figure 1.4 – Appearance of shielded measuring cable RAPM.685631.001 1.6. Marking and packing Instrument marking corresponds to GOST 22261, GOST IEC 61010-1-2014 and design documentation set (DD).
  • Page 11 Prior to instrument operation, clean measurement sockets and areas around them. Avoiding of this recommendation can lead to significant error of measurement caused by surface leakage current. In case of shielded measuring cable use it is required to check electric resistance between signal and shield circuits from time to time.
  • Page 12 2.3. Operating the megohmmeter Е6-32 To switch the instrument on / off press button After the instrument is switched on and self-tested, its software version is first shown on the display, then the instrument switches over to mode of measurement that preceded switching-off.
  • Page 13 Figure 2.1 – Menu. Instrument settings Option “SET OF MODES” allows to remove or add to the set of available test types: fixed test voltages (50, 100, 250, 500, 1000 and 2500 V), measurement of continuity (Rcont), measurement of varistor voltage (Uvar), measurement of spark-gap breakdown voltage (Udis), as well as to change the values of user test voltages (Us1, Us2).
  • Page 14 Example of user test voltages Us1 and Us2 change is given in Figure 2.2. Figure 2.2 – Menu. Modes Voltages Us1 and Us2 can be also added to the list or removed from it at selection of “Add” or “Delete” options respectively. Option “TEST SETTINGS”...
  • Page 15 Figure 2.3 – Memory menu. Recording of result If the measurement is finished more than 20 seconds ago or the instrument is switched off, then to view the last measured value and to record it to the memory of instrument, press button , select "LAST MEASURED RESULT"...
  • Page 16 (name lengths is up to ten digits), generating the reports, etc. The program and its detailed description can be downloaded from the company's site www.radio-service.ru. For data exchange with a computer it is required: - turn on PC and run RS-terminal program;...
  • Page 17 2.3.5. Insulation resistance measurement Before insulation resistance measurement, the following settings are possible in "TEST SETTINGS" option of the instrument menu: - test duration setting – time of test voltage generation – 1 to 10 minutes; - selection of calculation method for Dielectric Absorption Ratio: DAR=R60/ R15 or DAR=R60/ R30, see item 2.3.6;...
  • Page 18 Figure 2.5 – Measurement of cable insulation resistance To avoid the influence of surface leakage currents (e.g. caused by contamination of the measured object surface) use connection diagrams with three measuring cables. In case of insulation resistance measurement between cable wires, the protective ring shall be used (piece of foil mounted on the insulator of one of the wires and connected to the socket "G"...
  • Page 19 Figure 2.7 – Measurement of insulation resistance After measurement completion, the residual voltage is removed automatically from the object, its value "Ui" is displayed on the display and accompanied with frequent intermittent audio signal until safe level of 50 V is reached. After measurement completion, the results are shown on the display during 20 seconds and can be recorded to the memory (see item 2.3.2).
  • Page 20 - Induced DC voltage can be present on the object. In this case it is recommended to perform measurements twice – with change of applied test voltage polarity. This allows to determine the true value of insulation resistance as an average value of two measurements. For short-time measurements of the insulation resistance press and hold button , the measurement is stopped after the button is released.
  • Page 21 can be set to ON by the user during the measurement parameters setting (see item 2.3.5). It is recommended to use the following factors KPOL to evaluate the insulation quality: PI <1 – service life of insulation is exhausted, the process of insulation resistance decrease begins (possibly, to unacceptable level);...
  • Page 22 If external noise level at the measurement object allows to perform measurements with the specified accuracy, then display in standby mode shows the symbol Otherwise the display shows the symbol accompanied by audio signal, and the measurements are interlocked. Attention! The instrument is provided with the protection against damages in case of unintentional connection to live-line conductors.
  • Page 23 To disable zero-point correction mode enter the correction menu, select option «Disable» and press button Note. If the resistance of the measurement object is much lower than that of the measuring cables, results with a negative sign can be displayed because of measurement errors with enabled zero-point correction.
  • Page 24 2.4. Operation with instruments Е6-31 and Е6-31/1 To switch the instrument on / off press button After instrument switching on and self-test, the number of software version is displayed for a short time, then message “Еb” (battery energy) appears and one to three horizontal lines characterizing the storage battery (battery) state are shown under the symbol “...
  • Page 25 indication of the result appears upon achieving of the specified value (resistance values taken with interval of 0.1 second differ by less than 7%). To cancel mode "K" press and hold button more than 2 seconds. After that the indicator of the current test voltage illuminates continuously. 2.4.2.
  • Page 26 Figure 2.12 – Reduction of surface leakage currents influence Note. During measurements on some grounded objects consider the following: - normally, if one of the contacts of the measured resistance is grounded (Figure 2.12.а), it is recommended to connect "-" of the megohmmeter to it. However, in case of unstable readings the change of connection polarity can provide more stable readings.
  • Page 27 For short-time measurements of insulation resistance press and hold button After button is released, the measurement stops. 2.4.4. Calculation of Dielectric Absorption Ratio Dielectric Absorption Ratio (DAR) is used to evaluate the wetting degree of the insulation on cable lines, transformers, electric motors, etc.: charge rate of the absorption capacity is evaluated (capacity due to non-homogenity and contamination of material, inclusions of air and moisture) for insulation at test voltage applying.
  • Page 28 3. MAINTENANCE AND TROUBLESHOOTING 3.1. General instructions Maintenance includes meeting the rules of operation and storage. Repair of megohmmeter is only allowed at the manufacturer’s site or in special repair agencies. 3.2. Possible failures and troubleshooting procedures Possible failures and troubleshooting procedure are provided in Table 3. Table 3 – Possible failures and troubleshooting procedures Failure symptoms Possible cause...
  • Page 29 4. TRANSPORTATION AND STORAGE The instrument packed in a standard package allows transportation by all types of transport without any distance limitation. When transported by an aircraft, megohmmeter shall be arranged in a pressurized compartment. Climatic conditions of transportation and storage shall be within the ambient air temperature range from -50 ºС...
  • Page 30 Check of the reference error at insulation resistance measurement 6.7.3 Check of short-circuit current at “+” and “-” jacks 6.7.4* Check of the reference error at varistor voltage measurement (for E6-32) 6.7.5 Check of the reference error at spark-gap breakdown voltage measurement 6.7.6...
  • Page 31 6.3. Verification means Verification means shall be serviceable and verified. List of verification means is given in Table 5. Table 5 – Verification means Description and type Required technical specifications of verification means of main or auxiliary verification means Measurement range Error Measure-simulator P40116 resistance range from 10 kΩ...
  • Page 32 6.4. Verification conditions Verification shall be performed provide that the following conditions are met: - ambient air temperature of +15 to +25 ºС; - relative air humidity of 30 to 80%; - atmospheric pressure of 84 to 106 kPa (630 to 795 mm Hg); 6.5.
  • Page 33 6.7. Verification of the main metrological characteristics The measurement error is checked by the method of direct measurements and comparison of the instrument readings with the design value in the point to be checked that is decreased or increased by the value of the instrument error limit. Result is considered to be positive if the instrument readings in i-th check point Ni meet the following condition: (Nref i - Nref i •...
  • Page 34 Table 7 – Limits of permissible test voltage setting error Test voltage, V 1000 2500 Measured voltage 57.5 287.5 1150 2875 (upper limit), V Measured voltage 1000 2500 (lower limit), V 6.7.3. Check of the reference error at insulation resistance measurement Check insulation resistance measurement error at all combinations “test voltage –...
  • Page 35 Check of test current value is considered to be satisfactory if the measured current is not more than 2 mА. 6.7.5. Check of the reference error at varistor voltage measurement (for E6-32) To check the reference error at varistor voltage measurement: - assemble the test setup in accordance with Figure 6.3;...
  • Page 36 0.95*Uext -10 ≤ UЕ6-32 ≤ 1.05*Uext +10. 6.7.7. Check of the reference error at direct current resistance measurement (for continuity) (for E6-32) To check measurement error of continuity it is required to: connect resistance box Р4834 to the sockets “э/Ω” and “G”;...
  • Page 37 - at resistance box set the reference resistances in accordance with Table 9 and perform measurement. Check of DC resistance measurement error is considered to be satisfactory if readings of Е6-32 are within the limits of permissible reference error in accordance with Table 9.
  • Page 38 7. PASSPORT 7.1 Acceptance Certificate Megohmmeter Е6-32 Е6-31 Е6-31/1 delete as applicable serial No. complies with the specifications RAPM.411218.002TR (technical requirements), and has been found fit for operation. Head of QCD Stamp here signature print full name __________________ day, month, year 7.2 Data on Primary Verification Measurement device: Insulation tester Е6 -32 Е6-31 Е6-31/1...
  • Page 39 The guaranteed service life does not cover the storage battery. Details of the manufacturer: JSC NPF Radio-Service Address: 426008, Udmurt Republic, Izhevsk, st. Pushkinskaya, 268. Postal address: 426000, Izhevsk, post office box 10047. Tel. (3412) 43-91-44. Fax. (3412) 43-92-63. E-mail: office@radio-service.ru. Internet: www.radio-service.ru...
  • Page 40 7.4. Main specification Main metrological and technical specifications of the insulation tester are listed in items 1.2 and 1.3 of this operation manual RAPM.411218.002OM, respectively. 7.5. Certificates The megohmmeter is added in the State Register of measuring instruments under the number 53668-13 and has a declaration of conformity to technical regulations.
  • Page 41 8. Instrument In-Service Transfer Record 8.1. The instrument in-service transfer record is given in Table 10. Table 10 – Instrument In-Service Transfer Record Operating time Signature of Date person in Place Date of Reason for since charge of since last of installation removal removal...

This manual is also suitable for:

E6-31E6-31/1