ST Beta 20P Series Operating Manual
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ST Beta 20P Series Operating Manual

Digital panel meters for the measurement of ac voltage and current in single phase systems
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Operating Manual
1 PHASE PROGRAMMABLE DPM
AC Volt Meter (1 ) : Beta 20
Φ
AC Ammeter (1 ) : Beta 10
Φ
IC:2-60-006-00-00534
Rev. B 12/2021

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Summary of Contents for ST Beta 20P Series

  • Page 1 Operating Manual 1 PHASE PROGRAMMABLE DPM AC Volt Meter (1 ) : Beta 20 Φ AC Ammeter (1 ) : Beta 10 Φ IC:2-60-006-00-00534 Rev. B 12/2021...

  • Page 3: Table Of Contents

    PROGRAMMABLE DPM 1 PHASE PROGRAMMABLE DPM AC Volt Meter (1 ) : Beta 20 Φ AC Ammeter (1 ) : Beta 10 Φ Installation & Operating Instructions Section Contents Introduction Measurement Reading Screens Programming 3.1 Password Protection 3.2 Set Up Screens 3.2.1 Potential Transformer Primary value 3.2.2 Potential Transformer Secondary value 3.2.3 Current Transformer Primary value...
  • Page 4 Connection Diagrams 5.1 Connection Diagrams for BETA 20P 96x96 models 5.2 Connection Diagrams for BETA 10P96x96 models 5.3 Connection Diagrams for BETA 20P48x96 models 5.4 Connection Diagrams for BETA 10P48x96 models Specifications Available Models : 1. BETA 20P : 96X96 with 2.

  • Page 5: Introduction

    1. Introduction BETA 20P / 10P Series is a panel mounted 96 x 96mm and 48X96mm Digital Panel Meters for the measurement of AC Voltage and current in single phase systems. The instrument integrates accurate measurement technology. The measurements are True RMS upto 15th Harmonic.

  • Page 6: Measurement Reading Screens

    TABLE 2: Parameters Displayed with modelsBETA 10P Measured Parameters Unit of measurement System Current System Current max. Value (Hi) System Current min. Value (Lo) 2. Measurement Reading Screens In normal operation the user is presented with the measurement reading screens. These screens may be scrolled through one at a time in incremental order by pressing the key and in decrementing order by pressing key.

  • Page 7: Programming

    B. Screens of BETA 10P Models : Screen 2 : System Current Max. Screen 6 : System Current min. Value Value displayed afte “Hi” Value Value displayed after “Lo” flashing on Display flashing on Display Screen 1 : System Current K V K K V K K V K...
  • Page 8 Password Entry : Enter Password, prompt for first digit. (* Denotes that decimal point will be flashing). Press the “ ” key to scroll the value of the first digit from 0 K V K A to 9, the value will wrap from 9 round to 0. Press the “...
  • Page 9 Enter Password, third digit entered, prompt for Fourth digit. (* Denotes that decimal point will be flashing). Use the “ ” key to scroll the value of the fourth digit from K V K A 0 through to 9, the value will wrap from 9 round to 0. Press the “...
  • Page 10 Password Incorrect. This screen indicates that the unit has not accepted the Password entered. Pressing the “ ” key will return to the Enter Password K V K A stage. Pressing the “ ” key exits the Password menu and returns to the Measurement mode.
  • Page 11 New / Change Password, second digit entered, prompting for third digit. (*decimal point indicates that this will be flashing). Pressing the “ ” key will scroll the value of the third digit K V K A from 0 through to 9, the value will wrap from 9 round to 0. Pressing the “...

  • Page 12: Set Up Screens

    New Password confirmation Pressing the “ ” key will return to the “New/Change Password”. K V K A Pressing the “ ” key will Set the new Password and advances to the Set up screen. (see section 3.2). 3.2 Set Up Screens 3.2..
  • Page 13 Potential Transformer value Edit Pressing the “ ” key will scroll the value of the most significant digit (100s) from 0 through to 9. Pressing the “ ” key accepts the present value at the cursor position and advances the cursor to the next Less significant digit. When the least significant digit has been set, pressing the “...

  • Page 14: Potential Transformer Secondary Value

    3.2.2 Potential Transformer Secondary Value (for BETA 20P models) This screen is displayed after PT primary value set followed by “Pt-S” it automatically goes to value edit . Pressing “ ” key accepts the present value and then advances to RESET menu (section 3.2.5). K V K A Pressing the “...

  • Page 15: Current Transformer Primary Value

    3.2.3 Current Transformer Primary Value (for BETA 10P models) The nominal full scale Current which will be displayed Phase current for both system types. This screen enables user to display Line current inclusive of any CT Ratio 1 upto 999kA . Pressing the “...

  • Page 16: Current Transformer Secondary Value

    Current Transformer Primary Value Confirmation This screen will only appear following an edit of the Current Transformer Primary Value. K V K A If the set value is to be corrected, pressing the “ ” key will return to the “Current Transformer Primary Value Edit”...

  • Page 17: Reset Of Min/Max Values

    3.2.5 RESET of min / max Values This screen is displayed after CT/PT secondary set followed by “RESET” on Display. Pressing “ ” key enters into Reset menu and scrolls between the parameters as shown in the screens with pressing the key again. Pressing “...
  • Page 18 Reset parameter confirmation Pressing “ ” key re-enters reset menu. Pressing “ ” resets the selected parameter and enters to K V K A Screen Auto scrolling or fixed. Selection menu (section 3.2.6). 3.2.6 Selection of Auto Scrolling or fixed Screen This Screen will display after PT/CT secondary value Confirmation followed by “AUtO”...

  • Page 19: Installation

    4. Installation Mounting of BETA 20P/10P is featured with easy “Clip- in” mounting. Push the meter in panel slot (size 92 x92 mm), it will click fit into panel with the four integral retention clips on two sides of meter. If required Additional support is provided with swivel screws (optional) as shown in figure.

  • Page 20: Emc Installation Requirements

    Caution In the interest of safety and functionality this product must be installed by a qualified engineer, abiding by any local regulations. Voltages dangerous to human life are present at some of the terminal connections of this unit. Ensure that all supplies are de-energised before attempting any connection or disconnection.

  • Page 21: Case Dimensions And Panel Cut-Out

    4.2 Case Dimensions and Panel Cut Out 4.2.1 for 96X96 models 96mm 92mm +0.8 (3.78”) (2.16”) (3.62”) FRONT DISPLAY PANEL CUTOUT AREA MAX PANEL THICKNESS 0.18”,5mm 4.2.1 for 48X96 models 96mm 81.5 92mm + 0.8 (3.78”) (3.326”) (3.62”) FRONT DISPLAY (1.89”) AREA 5 mm...

  • Page 22: Auxiliary Supply

    4.4 Auxiliary Supply BETA 20P/10P should ideally be powered from a dedicated supply, however it may be powered from the signal source, provided the source remains within the limits of the chosen auxiliary voltage. 4.5 Fusing It is recommended that all voltage lines are fitted with 1 amp HRC fuse. 4.6 Earth/Ground Connections For safety reasons, panels and accesoriess should be grounded in accordance with local regulations.
  • Page 23 5.3 Connections For BETA 20P 5.4 Connections For BETA 10P 48X96 model 48X96 model SINGLE PHASE 2-WIRE SINGLE PHASE 2-WIRE DIGITAL PANEL METER (WITH EXTERNAL AUX.) DIGITAL PANEL METER (WITH EXTERNAL AUX.) SUPPLY SUPPLY P1 S1 6. Specifications : Inputs (BETA 20P) : Nominal Input Voltage 290V System Primary Values...
  • Page 24 Inputs (BETA 10P) : Nominal Input Current 5A AC Standard Values 1 to 999 kA System CT primary values System Secondary Values 1 A / 5A, programmable at site Max continuous input current 120% of Rated Value Overload indication “-oL-” (If input is greater than 125% of secondary value.) Nominal input Burden 0.2VA approx.
  • Page 25 Operating Measuring Ranges BETA 20P : Voltage 10 ... 120 % of Rated Value BETA 10P : Current .. 120 % of Rated Value Optional : BETA 10P:(Max 200% input): Current 5 ... 200 % of Rated Value Frequency 45 ... 65 Hz Accuracy BETA 20P : Voltage 0.5 % of range + 1 Digit (10...100% of...
  • Page 26 Rated Value + 5 % Auxiliary supply voltage Auxiliary supply frequency Rated Value + 10 % Temperature Coefficient Voltage (BETA 20P) 0.025% / C (10...120% of Rated Value) 0.05% / C (5...120% of Rated Value) Current ( BETA 10P Optional : 0.05% / C (5...200% of Rated Value) Current ( BETA 10P Max 200% Input)
  • Page 27 IEC 61010-1 , Year 2001 Safety IEC 60529 IP for water & dust Environmental conditions Operating temperature -20 to 70 C Storage temperature -30 to 80 C Relative humidity 0 .. 90 % RH (Non condensing) Warm up time 3 minute (minimum) Shock 15g in 3 planes Vibration...
  • Page 28 NOTE...
  • Page 29 NOTE...
  • Page 30 WARRANTY Dear Sir, You are now the privileged owner of Digital Panel meter / accessories, a product that ranks the first of its kind in the world. Company provides 12 months warranty from the original date of Purchase against defective material and workmanship. In the unlikely event of failure of this meter / accessaries within the warranty period, Company undertakes to get the meter / accessories repaired free of charge, Please handover the meter / accessories to the dealer / stockist...
  • Page 31 In case of dispute to the validity of the warranty, the decision of services center will be final. If you bought this meter / accessories directly from the company, and if you notice transit damage, then you must obtain the insurance surveyors report and forward it.
  • Page 32 The Information contained in these installation instructions is for use only by installers trained to make electrical power installations and is intended to describe the correct method of installation for this product. However, Company has no control over the field conditions which influence product installation.

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Beta 10p series

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