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ISA T 2000 Introductory Manual

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DATE: 20/04/2011
DOC.MIE12110
REV.4
T 2000
INTRODUCTORY GUIDE

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  • Page 1 DATE: 20/04/2011 DOC.MIE12110 REV.4 T 2000 INTRODUCTORY GUIDE...
  • Page 2 DOC. MI E12210 Rev. 4 Page 2 of 86 REVISIONS SUMMARY VISA PAGE DATE 25/04/2006 Issued Lodi. 39 to 43 8/06/2006 Added the Lodi Calibration chapter 23/11/2009 Minor corrections Lodi 71, 72 20/4/2011 Modified Lodi firmware revision 1.40...

  • Page 3: Table Of Contents

    DOC. MI E12210 Rev. 4 Page 3 of 86 SHORT FOREWORD....................... 5 INTRODUCTION ........................ 6 1 TEST SET DESCRIPTION AND USE ..............9 1.1 T HE FRONT PANEL ....................9 1.2 T HE POP UP MENU ....................12 1.2.1 Transformers selection ..............13 1.3 P OWER .......................
  • Page 4 5 CALIBRATION ......................77 5.1 I NTRODUCTION ...................... 77 5.2 C ALIBRATION PROCEDURE ................77 5.3 T 2000 OUTPUT CALIBRATION ................ 79 5.3.1 OUTPUT CURRENTS CALIBRATION ..........79 5.3.2 OUTPUT VOLTAGES CALIBRATION..........80 5.4 EXTERNAL INPUT CURRENTS ................ 82 5.5 EXTERNAL INPUT VOLTAGES ................ 84...

  • Page 5: Short Foreword

    So, either the manual is actually of help, or I ignore it. This is why I decided to split the T 2000 manual in three: specification, with all performance details; application manual, with instructions about how to use it one its operation is understood;...

  • Page 6: Introduction

    DOC. MI E12210 Rev. 4 Page 6 of 86 INTRODUCTION T 2000 allows performing all the test to be performed on current and voltage transformers. The following table lists the tests that can be performed on CT and VT. TEST...
  • Page 7 TDMS software, which allows creating a data base of test results for all the plant. The ease of operation has been the first goal of T 2000: this is why the LCD is graphic, and so large. With it, the dialogue in MENU mode is made easy.
  • Page 8 DOC. MI E12210 Rev. 4 Page 8 of 86 The desired operation is accessed by the multi-function wheel. The following chapters explain how to operate with the above selections. NOTE: WINDOWS is a trademark of MICROSOFT inc.

  • Page 9: Test Set Description And Use

    DOC. MI E12210 Rev. 4 Page 9 of 86 1 TEST SET DESCRIPTION AND USE In this chapter we describe the test set and inform about the operations that are common to relay or transformers testing. 1.1 T HE FRONT PANEL...
  • Page 10 DOC. MI E12210 Rev. 4 Page 10 of 86 The following list includes the key components inside T 2000. 1) Supply socket and main supply fuse, rated T5A, incorporated in the supply socket. 2) Power-on switch, with light. 4) Emergency push-button with lock-in.
  • Page 11 DOC. MI E12210 Rev. 4 Page 11 of 86 68) External voltage meter safety sockets. 69) 25 mA metering input protection fuse. 70) 10 V measurement input connector. 80) Transformer protection thermal switches. 81) Serial interface supply transformer. 82) Electronic power switch (SCR). 83) TRANFORMERS board for the auxiliary supplies, PWA11412.

  • Page 12: The Pop - Up Menu

    DOC. MI E12210 Rev. 4 Page 12 of 86 1.2 T HE POP UP MENU The following is the list of features that are menu selected. The menu is operated by means of the control knob marked MENU, that incorporates a switch. The menu is entered pressing the knob and selecting the item moving the knob.

  • Page 13: Transformers Selection

    Rev. 4 Page 13 of 86 When the PC is connected, settings can also be created and transferred into T 2000 using TDMS. 1.2.1 Transformers selection With this selection, the choice is: CT; VT; PT. After entering the final selection, the operator can input the relevant parameters, still by using the multi-function knob: turning it allows changing the parameter;...
  • Page 14 DOC. MI E12210 Rev. 4 Page 14 of 86 TEST INPUT CONN. CONN. MEASUREMENTS DESCRIPTIO DATA Ratio Voltage High/Lo 1) High / Low VAC N. 1 mode primary w V AC primary out; to CT to low 2) Low V in; seconda or high 3) Polarity;...
  • Page 15 DOC. MI E12210 Rev. 4 Page 15 of 86 input. Curren output Excitation High V 1) High V AC out; N. 4 curve Voltag AC to CT 2) I out of High V seconda output 3) Iout-Vout - I nom curve;...
  • Page 16 DOC. MI E12210 Rev. 4 Page 16 of 86 Polarity by Low IDC CT sec. 1) I DC out; N. 7 impulses to CT to Iin 2) I secondary; primary 3) Polarity TEST TEST INPUT CONN. CONN. IN MEASUREMENTS DESCRIPTION DATA Ratio;...
  • Page 17 DOC. MI E12210 Rev. 4 Page 17 of 86 LN for primary seconda (nominal values) Voltage - Max High V 1) High V AC out; N. 11 withstand High V AC to 2) I out of High V Primary AC ; - Max I 3) Elapsed Time test;...

  • Page 18: Power - On

    Power-on T 2000: the test set checks if it is connected to the ground; if not, it alerts the operator with the following message. All operations will be inhibited until the ground is available; power- off, connect to the ground and then power-on again.
  • Page 19 NOTE: this protection checks the voltage between phases and ground; at least one of them (the neutral) must have a low voltage with respect to the ground. This means that T 2000 cannot be powered by two phases of a 220 V (or 110 V) three- phase supply (127 V or 63.5 V phase to neutral).

  • Page 20: Outputs Description And Hazardous Situations

    DOC. MI E12210 Rev. 4 Page 20 of 86 At the end of it, default selections are active; T 2000 is i n the OFF state. If some selection keys are pressed at power-on, the following message warns the operator to release them.
  • Page 21 Coming to the characteristics of main supplies, the following applies. . The quality of the waveform is depending upon the quality of the voltage supply. Please do not blame T 2000 for distorted waveforms! . Current outputs are generated by a voltage transformer with low voltage and high current ratings.

  • Page 22: Hv Voltage Output

    . Never leave connection cables connected, even if the output is unused. T 2000 HV connectors are suited for HV isolation; instead, connection cables have at their ends some accessible clip-on crocodiles. It is true that HV is disconnected when not used;...

  • Page 23: Hazardous Situation Summary

    DOC. MI E12210 Rev. 4 Page 23 of 86 When the connection is performed, connect the crocodile first, then connect the cable to the HV connectors. The HV connector is made of a moving body, a threaded part on which is located a nut: see sketch. You cannot remove the connection pulling the cable: it is necessary to act on the body.

  • Page 24: Current Generation

    DOC. MI E12210 Rev. 4 Page 24 of 86 used High AC voltage In this situation, if the Ground output connected to operator touches the connection ground other terminal, he would be subject to a mortal voltage: it is necessary to be extremely cautious.
  • Page 25 . At first, be sure that the main control knob (6) is turned (rotated) to the zero position (complete counter-clockwise). . Power-on T 2000. . Select by the push-button (57) the measurement on the desired output sockets (13), according to the maximum current to be generated: the LED turns on;...

  • Page 26: Optional Thermal Printer

    DOC. MI E12210 Rev. 4 Page 26 of 86 . After you have started the test, if the burden is a short circuit made of a short cable, you measure at zero knob position a current that usually is less than 3% of the range. This value does not influence at all the measurement of the current you are generating: it is not an error of the measurement instrument.
  • Page 27 . Confirmation key: if not turned ON, the HV output is not generated. If the key is turned ON while T 2000 is generating other outputs, the generation is interrupted, and the following message is displayed: .
  • Page 28 It is necessary to power-off and wait until T 2000 cools down. - Thermal sensor on the T 2000 inside. If T 2000 is too hot, the following message is displayed. It is necessary to power-off and wait until T 2000 cools down.
  • Page 29 DOC. MI E12210 Rev. 4 Page 29 of 86 - The main DC current source is protected against over-voltages, that could be caused by the load inductance. In addition, the output is automatically kept to zero as test stops, so that any residual energy on the external load is discharged: during this time, the following message is displayed.

  • Page 30: Transformers Testing Fundamentals

    DOC. MI E12210 Rev. 4 Page 30 of 86 2 TRANSFORMERS TESTING FUNDAMENTALS Many of tests explained in this manual involve high voltage and/or current, and should be performed by experienced personnel, familiar with the peculiarity or dangers that may exist during test setup and procedures.

  • Page 31: Remanence

    DOC. MI E12210 Rev. 4 Page 31 of 86 2.2 R EMANENCE All transformers with iron cores have the problem of residual magnetization. The core materials are subject to hysteresis: if a current through the transformer is interrupted, the flux density does not become zero while the current is zero.
  • Page 32 T 2000 accepts the STOP command, but keeps on measuring the current, and shows a message until it is decreased to zero.

  • Page 33: What's Inside

    DOC. MI E12210 Rev. 4 Page 33 of 86 3 WHAT’S INSIDE? 3.1 P HYSICAL DESCRIPTION The test set is contained in a housing, to which it is fixed by means of nine (also rubber feet) screws that are located below it: see the following picture.
  • Page 34 DOC. MI E12210 Rev. 4 Page 34 of 86 The mechanical components are: . The front plate, on which are mounted: the VARIAC transformer, all interfacing components and the front board; . The base plate, on which are mounted all other components; .
  • Page 35 DOC. MI E12210 Rev. 4 Page 35 of 86 80) Low currents measurement transformer, XTF20059. 81) Serial interface supply transformer, XTF10357. 82) Power SCR’s to control the test start-stop. 83) TRANFORMERS board for the auxiliary supplies, PWA11412. 84) HV output measurement transformer, XTF20049. 85) Fan.
  • Page 36 DOC. MI E12210 Rev. 4 Page 36 of 86 On the upper corner are mounted the control cards: they are: MICRO-T1000, PWA41300; CONV T 3000, PWA21401; INTE-T 3000, PWA11410, TRANSFORMERS, PWA11412. They connected to the back-panel PWA11413, and to the front panel via three flat cables.

  • Page 37: Detailed Function Description

    DOC. MI E12210 Rev. 4 Page 37 of 86 86) Primary circuit breaker. 87) HV opening relay. On the front panel are mo unted the following components: 6) Main outputs adjustment VARIAC. 17) Front panel board; code YWA11411. 29) Variable transformer home position switch. The upper part of the test set, after opening, is shown in the following picture.

  • Page 38: Main Front Board Pwa11411 (17)

    DOC. MI E12210 Rev. 4 Page 38 of 86 VOLTAGE POWER PURPOSE 800 A output (1 s maximum); 100 A steady 250+ 0.5 A steady 10 A output (60 s maximum); 5 A steady 40 A output (60 s maximum) ; 12 A steady 5 A DC output steady (same common) 3000...

  • Page 39: Conv-T 3000 Board Pwa21401 (16)

    DOC. MI E12210 Rev. 4 Page 39 of 86 isolated among them, and also the auxiliary + 5 V for all logic circuits, and ± 15 V for all analog circuits. The board includes a number of fuses. The following table summarizes: the fuse name, he fuse value, the circuit supplied.

  • Page 40: Inte On-Off T 3000 Board Pwa11410 (7)

    DOC. MI E12210 Rev. 4 Page 40 of 86 signals. This is performed by two 12-bit, 4 channels each parallel ADC converters. • TASK 2: to generate a squared waveform in phase with the mains input, and to square the AC current and voltage signals for the phase meter.
  • Page 41 DOC. MI E12210 Rev. 4 Page 41 of 86 operation, test and results handling and the communication with the PC, but not the AC waveform generation, that is controlled by a dedicated slave microprocessor.

  • Page 42: The Hell, It Doesn't Work

    Murphy’s law, when it was most necessary. We at ISA do our best efforts to filter the so-called infant mortality of electronic components prior to delivery of all our test sets;...
  • Page 43 DOC. MI E12210 Rev. 4 Page 43 of 86 A) TESTS AT POWER-ON (and runtime) ERROR MESSAGE CONSEQUENCE CORRECTIVE ACTION EMERGENCY The test set is The EMERGENCY key blocked. is locked: press and rotate it, so that it is released. Test set not The test cannot Connect the test...
  • Page 44 DOC. MI E12210 Rev. 4 Page 44 of 86 set. Diagnostic error NV If the error is not Fault in the MICR memory access confirmed it is board: replace it possible to continue; else, the test cannot proceed (NOTE 1) Test results It is necessary to Using the menu,...
  • Page 45 DOC. MI E12210 Rev. 4 Page 45 of 86 minutes too high because of heavy loads or very long test duration: wait until it cools down T2000 is too hot: Generation is stopped The test set power off for 15 (NOTE 1) temperature is minutes...

  • Page 46: Trouble Shooting

    DOC. MI E12210 Rev. 4 Page 46 of 86 4.3 T ROUBLE SHOOTING In case of malfunctioning, the following table lists the more likely types of faults, and the correction. Following paragraphs give more details about the corrections. SYMPTOM POSSIBLE CAUSE CORRECTION Problems after Heavy shock...

  • Page 47: A T Power On Does Not Turn On

    DOC. MI E12210 Rev. 4 Page 47 of 86 stable Problems after Repeat the See paragraph 4.7 UPGRADE procedure False alarm of To be located See paragraph 4.8 missing ground The display backlight Fault of the See paragraph 4.9 does not turn on backlight converter A test set rated 110 Fault of some...

  • Page 48: N O Output From The Main Current And Voltage

    DOC. MI E12210 Rev. 4 Page 48 of 86 If any of these voltages is missing, the test set cannot operate: it is necessary to find out if it is a problem of blown fuse, or repair the auxiliary voltage circuit. 4.5 N O OUTPUT FROM THE MAIN CURRENT AND VOLTAGE This is the case when you can start the test, but no output is...

  • Page 49: False Alarm Of Missing Ground Connection

    DOC. MI E12210 Rev. 4 Page 49 of 86 If during the Upgrade operation the power went off, and the test set is no more operational, to recover the situation proceed as follows. - Remove (or unlock a little) the metal bar that fixes the two aluminium columns.
  • Page 50 DOC. MI E12210 Rev. 4 Page 50 of 86 . First of all, verify that the connector is correctly fit, and that wires are not loose. Then, re-solder the converter to the main board: we once had a case of poor soldering. .

  • Page 51: A 110 Vrated Test Set Was Powered At 220 V

    Page 51 of 86 . If changing the MICR board the fault is still there, it is necessary to return the test set to ISA for the replacement of the display, that involves a difficult labor. 4.10 A 110 V...
  • Page 52 DOC. MI E12210 Rev. 4 Page 52 of 86 . Check that they are not open; in case, remove the faulty one, and replace it by a short-circuit. The following table summarizes the fuse rating and the generated supply. FUSE RATING SUPPLY 0.375 A...

  • Page 53: The Test Set Does Not Communicate With The Pc

    DOC. MI E12210 Rev. 4 Page 53 of 86 Other fuses are located on the main board below the front panel. Of these, there are three fuses located just below the display: their location is sketched here below. SUPPLY TRANSF. Fuse ratings are: F6: 2 A;...
  • Page 54 DOC. MI E12210 Rev. 4 Page 54 of 86 If you measure zero, this means that the transformer is faulty, and needs to be replaced. If you measure 8 V AC, then the problem is in the circuit. First of all, refer to the schematic of the serial I/F circuit at the end of the document.

  • Page 55: Fault On The 10 Vor 600 Vexternal Measurement

    DOC. MI E12210 Rev. 4 Page 55 of 86 U80 is mounted on a DIP socket; you should verify that between pins 15 and 16 of U80 (0 on pin 15) there should be + 5 V DC. . If + 5 V is not available, then verify: fuse F12, rectifying bridge D63, series regulator U79.
  • Page 56 DOC. MI E12210 Rev. 4 Page 56 of 86 . Unplugging all the connectors from the upper part to the lower part; . Unsoldering the connection wires; . Unscrewing the wires to the VARIAC; . Unscrewing the two high current cables from their sockets. The following pictures have been taken on a T 3000, so, on T 2000 two connectors and two boards (auxiliary AC and DC supplies) are missing.
  • Page 57 DOC. MI E12210 Rev. 4 Page 57 of 86 The following picture shows the detail of two more wires to disconnect. The two black wires, connected to the HV relay with FAST-ON, are to be unfastened. These wires are connected to the HV sockets;...
  • Page 58 DOC. MI E12210 Rev. 4 Page 58 of 86 It is necessary to disconnect the connectors, as shown, and to unsolder all the wires shown. About this, PATE CARE TO MARK THEM, IN ORDER TO ENSURE THE SAME SEQUENCE WHEN THEY WILL BE SOLDERED BACK.
  • Page 59 DOC. MI E12210 Rev. 4 Page 59 of 86 Arrows show the two high current wires, to be unscrewed, and the connectors to remove. Next picture shows the detail of three flat cable connections to remove: take care as they are hard to remove and fit, but the body is a bit fragile.
  • Page 60 DOC. MI E12210 Rev. 4 Page 60 of 86 Last, as all connections have been removed, remove the front panel and mother board from the rest, by unscrewing the screws shown in the next picture.
  • Page 61 DOC. MI E12210 Rev. 4 Page 61 of 86 After removing these screws, the support legs will remain attached to the front panel, so that it can be moved without damaging the components. Take care when you unscrew, in case some connection was not removed.
  • Page 62 DOC. MI E12210 Rev. 4 Page 62 of 86 Components of the voltage measurement circuit.
  • Page 63 DOC. MI E12210 Rev. 4 Page 63 of 86 Power supply of the voltage and current measurement circuits. If there is some damaged component, try to replace it; test also if fuses marked F8 and F9 are open; in case, replace them.
  • Page 64 DOC. MI E12210 Rev. 4 Page 64 of 86 After this, it is necessary to verify if the measurement circuit is operational. To this purpose, it is necessary to power-on the test set; this can be done as follows: . Connect to the power supply the connectors J10 (lower side of the test set) and J18 (see mounting schematic above), using the two extension cables provided;...

  • Page 65: Fault On The 10 Aexternal Measurement

    DOC. MI E12210 Rev. 4 Page 65 of 86 V). If some is missing, either there is a short circuit (in this instance remove all IC’s we have delivered, and try again), or the corresponding series regulator is broken (very unlikely). Once AC and DC voltages are OK, if the measurement is still wrong, replace all IC’s we have delivered;...
  • Page 66 DOC. MI E12210 Rev. 4 Page 66 of 86 . If there is no apparent damage to the CT, it is necessary to verify that it is correctly operational. To this purpose, open one of the secondary wires, and put in series a current ammeter. The transformer ratio is 1 A/ 5 mA;...
  • Page 67 DOC. MI E12210 Rev. 4 Page 67 of 86 If you are tooled to replace them, ask for the components: we will change the operational amplifier U46A; then, if necessary, the...
  • Page 68 DOC. MI E12210 Rev. 4 Page 68 of 86 analog switch U38. If neither of these components is faulty, it is advisable to return the test set for repair. The procedure to open T 3000 to gain access to the control board is described in the above paragraph.

  • Page 69: Fault On The Real Time Clock

    DOC. MI E12210 Rev. 4 Page 69 of 86 4.14 F AULT ON THE REAL TIME CLOCK The T 3000 internal clock is generated by a component mounted on the big front panel; it is supplied by a non-rechargeable battery, that should last 10 years or more. If the test set does not keep the date and time, the cause should be the battery being dead too soon.

  • Page 70: The Encoder Is Broken

    DOC. MI E12210 Rev. 4 Page 70 of 86 To replace it, it is necessary to withdraw T 3000 from the container, and to open the test set in two, as explained in 4.13: this allows you to access the component. Remove the battery and replace it with the new one.

  • Page 71: Upgrade To Firmware Revision 1.40

    DOC. MI E12210 Rev. 4 Page 71 of 86 . Now you have room enough to operate. Remove the encoder: the five wires going to it are long enough to allow you keeping it in your hand. . Unsolder the wires from the front panel, and then from the encoder, and solder them back to the encoder.
  • Page 72 DOC. MI E12210 Rev. 4 Page 72 of 86 NUT TO BE UN-TIGHTENED Boards are also kept in place by a rod that tightens the guides. Un-tighten the nut shown above and below. NUT TO BE UN-TIGHTENED 3. Remove the two boards: MICR is above. Remove the screws that keep boards together.

  • Page 73: The Fault Cannot Be Fixed

    DOC. MI E12210 Rev. 4 Page 73 of 86 4. Set switches as shown in the picture above, and restore the situation. Don’t forget to tighten the rod! At power-on, you will find an additional selection: relay tests. 4.17 T HE FAULT CANNOT BE F IXED If the fault is too hard to be fixed, you have to deliver it back to your agent.
  • Page 74 DOC. MI E12210 Rev. 4 Page 74 of 86 Cover the instrument itself with a polyester film, in order to protect it against dust and foam. The instrument should be protected by anti-shock foam having a minimum thickness of 5 cm ON ALL SIDES. Use a new carton box as a container.
  • Page 75 DOC. MI E12210 Rev. 4 Page 75 of 86 INSTRUMENT RETURN FORM DATE _________________ AGENT ________________ COUNTRY ______________ TYPE OF INSTRUMENT ___________________ SERIAL NO. ___________________________ INSTRUMENT RETURNED FOR: CALIBRATION ____ REPAIR ____ In case of repair, please specify the following. DATE OF FAULT _______________________ REPORTED BY E-MAIL, PHONE ___________ COMPANY ___________________________...
  • Page 76 DOC. MI E12210 Rev. 4 Page 76 of 86 HOW DID IT OCCUR _________________________________________________ _____________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ ___________________________________ LOCAL ANALYSIS OR ATTEMPTS TO REPAIR _______________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ _________________________________________________ ___________________________________ RECOMMANDATIONS AND NOTES _______________________________________________ _________________________________________________ _________________________________________________ _________________________________________________...

  • Page 77: Calibration

    5.2 C ALIBRATION PROCEDURE The calibration mode is accessed by pressing push-buttons < and > at the meantime, and powering on T 2000. The windows that opens up allows for first selections. The operating mode is the following: . Select the range to be calibrated. Calibrated ranger are checked.
  • Page 78 If necessary, it is possible to re-enter the same range and repeat the adjustment; else, go to the next range: T 2000 goes OFF. . Take now the output to the value to be tested, to verify for the linearity of the measurement.

  • Page 79: T 2000 Output Calibration

    For each output range there is a number of measurement scales, that are separately adjusted: during the use T 2000 automatically selects the best scale. This increases the measurement accuracy. 5.3.1 OUTPUT CURRENTS CALIBRATION NOTE: the current output from the main AC voltage is also calibrated.

  • Page 80: Output Voltages Calibration

    DOC. MI E12210 Rev. 4 Page 80 of 86 Range Calibration Notes current value measureme 0.199 A 140 mA Output 40A; s eries resistor 10 Ohm 0.799 A 500 mA Output 40A; series (Mis_IAC_m resistor 10 Ohm ain) 1.999 A 1,4 A Output 40A;...
  • Page 81 DOC. MI E12210 Rev. 4 Page 81 of 86 7.999 V 19.99 V 13 V 79.99 V 50 V 199.9 V 140 V 299.9 V 250 V 3000 V a.c. Range Calibration Notes voltage value measureme 19.99 Start with VARIAC at zero 79.99 50 V Start with VARIAC at zero...

  • Page 82: External Input Currents

    DOC. MI E12210 Rev. 4 Page 82 of 86 19.99 V 13 V offset adjustment adjusting the output to the mini then short-circuiting it 79.99 V 50 V offset adjustment adjusting the output to the mini then short-circuiting it 199.9 V 140 V offset adjustment...
  • Page 83 DOC. MI E12210 Rev. 4 Page 83 of 86 25mA dC Range Calibration Notes (Mis_25m_ value 10Aext) 0.2 mA Follow Use a stable source, such display as a DRTS test set. indications On this measurement there are 4 calibrations. 0.8 mA as above as above 2 mA...

  • Page 84: External Input Voltages

    DOC. MI E12210 Rev. 4 Page 84 of 86 5.5 EXTERNAL INPUT VOLTAGES INPUT CONTROL SOCKET 10 Vac Range Calibration Notes (Mis_600V value ext) 0.010 V Follow Use a stable source, such display as a DRTS test set. indication On this measurement there are 2 calibrations.
  • Page 85 DOC. MI E12210 Rev. 4 Page 85 of 86 as above as a DRTS test set. On this measurement there are 4 calibrations. 0.099 V Use a stable source, such as above as a DRTS test set. On this measurement there are 4 calibrations.

  • Page 86: Appendix 1 Spare Parts List

    DOC. MI E12210 Rev. 4 Page 86 of 86 APPENDIX 1 SPARE PARTS LIST The following is the suggested list of spare parts for a duration of five years and for up to five test sets. The reference is made to the list of components. 1) N.

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