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MTE CheckMeter 2.1 Operation Manual

Single-phase portable working standard for testing of electricity meters
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CheckMeter 2.1
Single-phase Portable Working Standard
for Testing of Electricity Meters
Operation Manual
CheckMeter 2.1 Operation Manual_R02
08.2014

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Summary of Contents for MTE CheckMeter 2.1

  • Page 1 CheckMeter 2.1 Single-phase Portable Working Standard for Testing of Electricity Meters Operation Manual CheckMeter 2.1 Operation Manual_R02 08.2014...
  • Page 2 D-21438 Brackel Germany Phone: +49-4185-5857-0 Fax: +49-4185-5857-68 Email: support@emh.de Copyright MTE Meter Test Equipment AG All rights reserved. The contents of this manual are subject to change without notice. All efforts have been made to ensure the accuracy of this publication but...

  • Page 3: Table Of Contents

    View results ....................... 37 8.3.1 Examples of results for different dataset types ............38 Print results ........................ 40 8.4.1 Layout of printout (option) .................... 40 8.4.2 Printout example of external printer (option) ..............43 CheckMeter 2.1 Operation Manual_R02 Page 1 of 52...
  • Page 4 Testing of a transformer operated meter ................47 Testing of a single phase three wire meter (ANSI Form 2S or Form 2A) ........48 Verification of the accuracy of the CheckMeter 2.1 ............. 50 Technical data ........................51 CheckMeter 2.1 Operation Manual_R02...

  • Page 5: Safety

    This product has to be only used by qualified personnel practicing applicable safety precautions.  Use caution during installation and use of this product; high voltages and currents may be present in circuit under test.  Local safety regulations must be observed. CheckMeter 2.1 Operation Manual_R02 Page 3 of 52...

  • Page 6: General

    General The CheckMeter 2.1 Portable Working Standard is a single-phase portable electronic meter test unit of accuracy class 0.2, used for testing single electricity meters on site. The unit can be used with an active error compensated clamp-on CT100A (Measuring range: 10 mA …...

  • Page 7: Connections And Control Elements

    • 1 active 100A error compensated clamp-on CT (Standard accessory) • 1clamp-on CT1000A (Measuring range: 100 mA … 120 A, cable : max. 52 mm) (OPTION) Connector type: 9 pole dedicated Redel socket, suitable for special MTE clamp-on cur- rent transformers. Impulse input / output This input can be used for scanning heads (such as the SH 2003) and can also be used to connect to retransmitting contacts of the device being tested.
  • Page 8 Menu card keys to change between menu cards. Cursor keys to navigate in menus and for data input Enter key to activate and cancel functions and data input. Impulse key to enter impulses manually [10] Alphanumeric keypad CheckMeter 2.1 Operation Manual_R02 Page 6 of 52...
  • Page 9 46 … 300 VAC, 47 … 63 Hz [12] RS232 serial line interface Connection: 9 pole SUB-D connector Pin 2  TxD Pin 3  RxD Pin 5  GND Pin 7  CTS Pin 8  RTS CheckMeter 2.1 Operation Manual_R02 Page 7 of 52...

  • Page 10: Start-Up Of The Instrument

    Start-up of the instrument Before start-up of the instrument carefully read the safety precautions in chapter Examples of connections using the CheckMeter 2.1 for measurements on different types of devices under test and for various connection modes are given in chapter 9.

  • Page 11: Operation Principles

    SN36429 Serial number of the instrument This information may be helpful during contacts with MTE in the case of a problem. Cursor keys and enter key Change left / right between menu cards (MC) These two keys are exclusively reserved for this function. The function is also available in submenus.

  • Page 12: Keypad

    All submenus have a FB with a door to exit the submenu. FB to exit the submenu with saving of the settings The settings changed in the submenu are saved, when leaving the submenu. CheckMeter 2.1 Operation Manual_R02 Page 10 of 52...

  • Page 13: Status Indications

    Status indications A status line at the bottom of the display shows the basic settings of the CheckMeter 2.1, as defined in the installation menu. For the meaning of the different symbols appearing in the status line see chapter 7.1.
  • Page 14 The reference values of the selected position are deleted (---). The values, which are saved at the black marked position, are automatically loaded as default values during power-on. Therefore it is useful to save the most used settings at position 00. CheckMeter 2.1 Operation Manual_R02 Page 12 of 52...

  • Page 15: Installation Of The Instrument

    The separator (.) must not be entered. It is generated automatically during the input. Adjustment of RS232 baud rate Select with up / down cursor keys one of the listed settings: 4800 / 9600 / 19200 / 38400 / 57600 / 115200 Baud CheckMeter 2.1 Operation Manual_R02 Page 13 of 52...

  • Page 16: Beeper Setup

    Beep for each keystroke on the keypad. Beep each time the time base starts. Beep each time a new error value will be displayed. Back to Basic settings of the instrument (6.1) CheckMeter 2.1 Operation Manual_R02 Page 14 of 52...

  • Page 17: Operation Of The Working Standard

    The mean frequency f of the impulse output is proportional to the selected reference value. C = 120’000’000/In [imp/kWh(kvarh, kVAh)] Meter constant: f = C’* reference value; with C’ = C / 3’600’000 [imp/Ws(vars, VAs)] Output frequency: CheckMeter 2.1 Operation Manual_R02 Page 15 of 52...
  • Page 18 In case of entering zero, the time base switches to external time base. The display of the results is triggered by pulses on the impulse input. Using this function, the measurements can be synchronized to other instruments and the results display can be frozen. CheckMeter 2.1 Operation Manual_R02 Page 16 of 52...

  • Page 19: Current Range Selection

    Attention! Do not operate the instrument under overload conditions for longer time. Internal current ranges Clamp-on CT100 A 100 mA 10 A 100 A Clamp-on CT1000 A 10 A 100 A 120 A CheckMeter 2.1 Operation Manual_R02 Page 17 of 52...

  • Page 20: Load / Save Settings

    / stop mode by counting only the start impulse and the last impulse. The disc mark or the LED impulse information can be entered at the CheckMeter 2.1 either by the impulse input, automatically with a scanning head SH 2003 or an impulse cable or manually with a hand switch, or by the keypad with the impulse key or the enter key in start / stop mode.
  • Page 21 Press the enter key or the impulse key, when the disk mark of a Ferraris meter is pass- ing or when a LED impulse is visible at an electronic meter. This is the start impulse for the measurement. CheckMeter 2.1 Operation Manual_R02 Page 19 of 52...
  • Page 22 Proceed in the same way as described for the 2 key press. A new error is calculated and displayed. Note: If the impulse key is used for this function, it is not necessary to select the Start / Stop FB first. CheckMeter 2.1 Operation Manual_R02 Page 20 of 52...

  • Page 23: 7.2.1 Measuring Set-Up

    If the scanning head SH 2003 is used, it must be fixed and adjusted at the DUT and be connected to the CheckMeter 2.1 impulse input. The connections for voltage and current between CheckMeter 2.1, DUT and source must be made depending on the type of meter to be tested and the measuring set-up used.
  • Page 24 This is done, because in the test mode time the number of tested impulses is not directly visible for the user and therefore the start / stop mode makes no sense. CheckMeter 2.1 Operation Manual_R02 Page 22 of 52...

  • Page 25: Load / Save Error Parameters

    (P), test duration 20 impulses (t=20i), meter constant 15000 i/kWh (C/R = 15k i/kWh). Available storage positions: 00 ... 52 Load / save error parameters Load error parameters Save error parameters Delete error parameters Back to Meter testing (7.2) CheckMeter 2.1 Operation Manual_R02 Page 23 of 52...

  • Page 26: Measurement Of Load Values

    At the bottom the effective value of the signal (U), the total harmonic distortion (kU) and the frequency (f) are displayed. Harmonic analysis can be performed for the types of signal voltage (U) and current (I). The values are updated at the interval of the time base. CheckMeter 2.1 Operation Manual_R02 Page 24 of 52...

  • Page 27: Waveform Display

    The value of the selected type of signal is listed first at the top of the display (-- Waveform U, I--) and the related waveform (U) is drawn with a thick line. The harmonic analysis is performed on the signal marked with the thick line. CheckMeter 2.1 Operation Manual_R02 Page 25 of 52...

  • Page 28: Vector Diagram

    U12h the voltage U is missing, I will be taken as reference. Note: The display of the power quadrant and the power vector is independent of the selected reference for the vector diagram. CheckMeter 2.1 Operation Manual_R02 Page 26 of 52...
  • Page 29 IU = 180° / PF = -1 IU = 0° / PF = 1 P-Q- P+Q- IU = -150° / PF = -0.86 IU = -90° / PF = 0 IU = -30° / PF = 0.86 CheckMeter 2.1 Operation Manual_R02 Page 27 of 52...

  • Page 30: Energy Measurement

    Entered start reading of the counter Entered end reading of the counter W: Energy difference W = #2 - #1 Energy counted by the CheckMeter 2.1 since start of measurement Error of counter or register: E = (W-W)/W*100 [%] Maximum demand results...

  • Page 31: Edit Counter Parameters

    Note: The counter of the device under test must measure exactly the same amount of energy as the internal counter W of the CheckMeter 2.1. The tester must manually control the procedures to correctly switch on/off the load of the device under test and to start/stop the measurement at the CheckMeter 2.1 to fulfill this condition.

  • Page 32: Load/Save Counter Parameters

    (P), maximum demand interval (15min)). Available storage positions: 00 ... 77 Load / save Counter parameters Load counter parameters Save counter parameters Delete counter parameters Back to Energy measurement (7.5) CheckMeter 2.1 Operation Manual_R02 Page 30 of 52...

  • Page 33: Storage Of Results

    The information shown here is saved or printed together with ac- tual results. The overview of the actual administrative dataset is visible and the content can be modified, if one of the functions is active. CheckMeter 2.1 Operation Manual_R02 Page 31 of 52...
  • Page 34 The administrative dataset of the selected occupied position POS xxx is modified. This allows correction of saved data and documentation of results later on. CheckMeter 2.1 Operation Manual_R02 Page 32 of 52...

  • Page 35: Definition Of Administrative Dataset (Ads)

    Comment to meter(4 lines) Select corresponding FB with the up / down cursor keys and press the enter key to activate input of data at the selected field. Back to Edit administrative dataset (8.1.1) CheckMeter 2.1 Operation Manual_R02 Page 33 of 52...
  • Page 36 Input of ADS comment The 1 enter key activates the input of general comment to the ADS. Any free comment to document the measurement can be entered on 4 lines (4 x 25 characters). CheckMeter 2.1 Operation Manual_R02 Page 34 of 52...

  • Page 37: Load / Save Administrative Data

    8.1.2 Load / save administrative data Available storage positions: 00 ... 24 Load / save Admin Dataset Load Admin Dataset Save Admin Dataset Delete Admin Dataset Back to Storage of results (8) CheckMeter 2.1 Operation Manual_R02 Page 35 of 52...

  • Page 38: Save Results

    An already occupied po- sition will be overwritten. Back to the calling menu. Note: Save + Print The function is the same as described above, but additionally the results are printed at the same time. CheckMeter 2.1 Operation Manual_R02 Page 36 of 52...

  • Page 39: View Results

    Terminate the view function The 2 enter key terminates the storage position and result page selection. The up / down and right / left cursor symbols disap- pear. Back to calling menu CheckMeter 2.1 Operation Manual_R02 Page 37 of 52...

  • Page 40: 8.3.1 Examples Of Results For Different Dataset Types

    - Meter type (3 lines: type, manufacturer, approval number) - Serial number - Manufacture year - Comment to meter Result window page 7 Other checks page 1 with predefined checks 01 ... 08. CheckMeter 2.1 Operation Manual_R02 Page 38 of 52...
  • Page 41 The result window pages 5 - 9 are the same as shown at example error measurement + load values. CheckMeter 2.1 Operation Manual_R02 Page 39 of 52...

  • Page 42: Print Results

    The printout includes a header line with time and date (actual time (ACT) at printing or time of storage (001), when stored position is printed) and the serial number of the used CheckMeter 2.1. The header line is followed by administrative data (if used), settings, main results and load values. At the end there is marked free space for signature of customer and tester.
  • Page 43 If the ADS is completely empty, only a dashed double line is printed. Settings Meter testing - Error measurement (Printout of CheckMeter 2.1) First line: time base (t:1.0s) Second and third line: meter constant, test duration in impulses or seconds and refer- ence mode, e.g.
  • Page 44 H20) in percentage of the fundamental (H01), which is always 100.0 %. Similar structure for current harmonics. Measurement - Load values (Printout of CheckMeter 2.1) Actual load values at time of pressing the camera soft key. This part is always printed with all type of results.

  • Page 45: Printout Example Of External Printer (Option)

    8.4.2 Printout example of external printer (option) CeckMeter 2.1 with CITIZEN PD-04 – ACT CheckMeter 2.1 Operation Manual_R02 Page 43 of 52...

  • Page 46: Delete Results

    Up to 24 administrative data sets ADS can be prepared with software CALSOFT and then be trans- ferred from PC to the CheckMeter 2.1 over the serial interface (preload of administrative data). Together with a MTE portable power source and CALSOFT (license II) even full automatic test runs can be performed.

  • Page 47: Connection Examples

    Testing of a single phase direct connected meter up to 100 A Supply via measuring circuit at Supply via mains line at 46 VACmin ... 300 VACmax 46 VACmin ... 300 VACmax CheckMeter 2.1 Operation Manual_R02 Page 45 of 52...
  • Page 48  > 10 mm up to 52 For other type of meters (ANSI Form S, Form A; British Standard BS etc.) consult the documentation provided by the manufacturer and adapt the connections to the meter regarding your needs. CheckMeter 2.1 Operation Manual_R02 Page 46 of 52...

  • Page 49: Testing Of A Transformer Operated Meter

    Warning! The current path on secondary side of an active current transformer must al- ways remain closed. Dangerous high voltages can occur and the current transformer and the instrument can be damaged, if the current path is opened during measurements. CheckMeter 2.1 Operation Manual_R02 Page 47 of 52...

  • Page 50: Testing Of A Single Phase Three Wire Meter (Ansi Form 2S Or Form 2A)

    A single phase three wire meter Form 2S or 2A can be tested phase per phase. In this configuration the double value of the indicated meter constant Kh must be entered at the CheckMeter 2.1. C = 2 * Kh [imp/Wh].
  • Page 51 The meter wiring diagram is shown for an ANSI type meter Form 2S. For an ANSI type meter Form 2A or other type of meters consult the documentation provided by the manufacturer and adapt the con- nections to the meter regarding your needs. CheckMeter 2.1 Operation Manual_R02 Page 49 of 52...

  • Page 52: Verification Of The Accuracy Of The Checkmeter 2.1

    Verification of the accuracy of the CheckMeter 2.1 The accuracy of the CheckMeter 2.1 can be verified by the impulse output. The meter constant of the impulse output depends on the highest selected internal current range (In): R = 120’000’000 / In Imp/kWh (kvarh, kVAh) See also description of meter constant in chapter 10.

  • Page 53: Technical Data

    120 A … 10 A Reactive (Q) Power / Energy 100 mA … Clamp-on CT100A 100 A 10 mA … 100 mA … Clamp-on CT1000A 10 A 120 A … 10 A CheckMeter 2.1 Operation Manual_R02 Page 51 of 52...
  • Page 54 = 120’000’000 / 10 = 12’000’000 [imp/kWh] C’ = C / 3’600’000 [imp/Ws(vars, Vas)] Output frequency: = C’ *P(Q, S) = 120’000’000 / (10 * 3’600’000) *10 * 300 = 10’000 [imp/s] CheckMeter 2.1 Operation Manual_R02 Page 52 of 52...

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