Hoyt Electrical Instrument Works, Inc. Alpha 41A Plus Operating Manual
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Hoyt Electrical Instrument Works, Inc. Alpha 41A Plus Operating Manual

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Operating Manual
Alpha 40A+/41A+/42A+
2-60-006-00-00614
Rev. 01_09/2015

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Summary of Contents for Hoyt Electrical Instrument Works, Inc. Alpha 41A Plus

  • Page 1 Operating Manual Alpha 40A+/41A+/42A+ 2-60-006-00-00614 Rev. 01_09/2015...

  • Page 3: Table Of Contents

    DIGITAL MULTIFUNCTION INSTRUMENT Programmable Multi-function Energy Meter Installation & Operating Instructions Section Contents Introduction Measurement Reading Screens Programming Password Protection Menu selection 3.2.1 System Parameter selection screen 3.2.1.1 System Type 3.2.1.2 Potential Transformer Primary value 3.2.1.3 Potential Transformer Secondary value 3.2.1.4 Current Transformer Primary value 3.2.1.5 Current Transformer Secondary value 3.2.1.6 Demand Integration Time...
  • Page 4 3.2.4.1.1.1.3 Pulse Rate 3.2.4.1.1.2 Limit output 3.2.4.1.1.2.1 Assignment of Limit Output to Parameter 3.2.4.1.1.2.3 Trip point selection 3.2.4.1.1.2.4 Hysteresis selection 3.2.4.1.1.2.5 Energizing delay time 3.2.4.1.1.2.6 De-energizing delay time 3.2.5 User Assignable Features 3.2.5.1 Feature Selection Menu 3.2.5.1.1 Backlit 3.2.5.1.2 User Assignable Screens 3.2.6 Quit screen Current Reversal screen Phase Rotation Error screen...

  • Page 5: Introduction

    1. INTRODUCTION The Multifunction Energy Meter is a panel mounted 114mm x 114mm ANSI round and 96 x 96mm DIN Quadratic Digital Panel Meter, which measures important electrical parameters in 3 ph 4 wire / 3 wire / 1ph Network and replaces the multiple analog panel meters. It measures electrical parameters like AC voltage, Current, Frequency, Power, Energy(Active / Reactive / Apparent), phase angle, power factor &...
  • Page 6 TABLE 1: Measured Parameters System Wise: Measured Parameters Units 3P 4W 3P 3W 1P 2W    Volts System Voltage    Amps System Current   Voltage VL1-N / 2-N / 3-N  Volts  Voltage VL1-L2 / L2-L3 / L3-L1 ...
  • Page 7 TABLE 2 : Measurement Screens (Model wise) Alpha 41A+ Alpha 42A+ Alpha 40A+ Screen Parameters Display Modbus Display Modbus Display Modbus Sys Power / Voltage / Current × √ √ √ √ √ L-N Voltage × √ √ √ √ √...
  • Page 8 TABLE 2 : Continued... Alpha 42A+ Alpha 41A+ Alpha 40A+ Screen Parameters Display Modbus Display Modbus Display Modbus Run Hour × √ √ √ √ √ On Hour × √ √ √ √ √ No of Interruptions × √ √ √...
  • Page 9 Alpha 42A+/41A+/40A+ Setup Parameter Screen codE (PassWord ) Exit from setup Parameter to Main Display SEL (Select) SYS PArA rSEt Out PArA USEr PArA quit Ser PArA (System Parameter) (Output Parameter) (Reset Parameter) (User Assignable (Serial Comm.Parameter) (Exit Menu) (Sec 3.2.1) Parameter) (Sec 3.2.3) (Sec 3.2.4)

  • Page 10: Programming

    3. PROGRAMMING The following sections comprise step by step procedures for configuring the Multifunction Meter according to individual user requirements. To access the set-up screens press and hold “ UP” and “ DOWN” keys simultaneously for 5 seconds. This will take the User into the Password Protection Entry Stage (Section 3.1). 3.1.

  • Page 11: Menu Selection

    Pressing the “ ” key to advance the operation to the next digit and sets the second digit, in this case to “1” Pressing “ ” key will New / Change Password, advance to the “New / change second digit entered, Password”...

  • Page 12: System Type

    Pressing the “ ” key allows the user to select & Ratio”,“PT Ratio”,Pressing the “ ” key allows the user to set Different system parameters. (see section 3.2.1.1 to 3.2.1.12) Pressing the “ ” key will advance to User Pressing the “ ”...

  • Page 13: Potential Transformer Primary Value

    Potential Transformer Primary Digit Edit Pressing the “ ” key will enter the system type edit mode & scroll through the values available. Pressing the “ ” key Pressing the “ ” key advances to the system will scroll the value of the through to 9 unless the This screen will only appear presently displayed Potential Transformer Primary...

  • Page 14: Potential Transformer Secondary Value

    Pressing the “ ” key accepts the present value at the cursor position and advances the cursor to the This screen will only appear following an edit of the Potential Transformer Primary Potential Transformer secondary ranges for Value. various Input Voltages If the scaling is not correct, pressing the “...

  • Page 15: Current Transformer Primary Value

    3.2.1.4 Current Transformer Primary Value This screen will only appear following an edit of the The nominal Full Scale Current that will be displayed as the Line currents. This screen enables the user to Current Transformer Primary Value. display the Line currents inclusive of any transformer ratios, the values displayed represent the Current in If the scaling is not correct, Pressing the “...

  • Page 16: Demand Integration Time

    3.2.1.8 Low Current Noise Cutoff Pressing “ ” key sets the displayed value and will advance to Demand Integration Time Edit menu. This screen allows the user to set Low noise (See Section 3.2.1.6) current cutoff in mA. Low Current Cutoff Edit 3.2.1.6 Demand Integration Time Pressing “...

  • Page 17: Energy Output

    Pressing “ ” key sets the displayed value and will advance to the “Energy Digit Reset Count” Pressing the “ ” key will menu. (See section 3.2.1.11) re-enter the “No. of Poles Selection” mode. Note : 1. Default value is set to ‘2’ i.e. Energy will be in terms of kWh/kVArh/kVAh resp.

  • Page 18: Energy Rate

    3.2.1.12 Energy Rate : This screen allows user to enter energy update Press the “ ” key to advance to next digit. rate in min. After entering particular value in min. Similarly, Enter second and third digits of address. the energy will be updated on modbus location from After entering third digit, press “...

  • Page 19: Rs 485 Parity Selection

    3.2.2.3 RS 485 Parity Selection: E : reset all energies Hi : reset maximum values of voltage & current This screen allows the user to set Parity & number Lo : reset minimum values of voltage & current of stop bits of RS 485 port. hr : reset run hour &...

  • Page 20: Pulse Duration Selection

    Pulse Duration Edit 3.2.4.1.1.2 Limit output : This screen is used to Pressing “ ” key accepts the assign Relay in limit output present value and advance to mode. Pulse Rate selection menu ( see section 3.2.4.1.1.1.3). Pressing “ ” key will Assign Limit output mode (See Pressing the “...
  • Page 21 3.2.4.1.1.2.1 Assignment of Limit output Pressing the “ ” key will enter the Limit to parameter. modes available. This screen is for Limit output mode selection. It allows the user to set Limit output corresponding Pressing the “ ” key advances to the Limit measured value.

  • Page 22: User Assignable Features

    3.2.4.1.1.2.6 De-Energizing Delay time This screen allows the user to set De-Energizing Press the “ ” key to scroll the value of the Delay time in seconds for Relay Limit Assigned Parameters. Press the “ ” key to advance to next digit. Pressing “...

  • Page 23: Current Reversal Screen

    After entering User Screen 10 value, pressing the Pressing the “ ” key will select that particular “ ” key will jump back to “Feature Selection Menu”. option and jump back to “Feature Selection Menu”. (See section 3.2.5.1) (See section 3.2.5.1) Note: When backlit is switched ‘Off’, on pressing 4 Current Reversal screen any key backlit will turn ‘On’...

  • Page 24: Phase Absent Screen

    6 Phase Absent screen . On Hour This Screen shows the total This screen is useful to indicate if voltage or current no. of hours the Auxiliary in any phase is absent. Hence, user will know Supply is ON. Even if the which voltage or current is missing and take Auxiliary supply is interrupted corrective action.
  • Page 25 TABLE 3 : Parameters for Limit output Trip Point 100% Parameter Parameter Set Range Value    None    Vnom (L-N) Volts 1 10 - 120 %    Vnom (L-N) Volts 2 10 - 120 % ...
  • Page 26 Trip Point 100% Parameter Parameter Set Range Value    Volts Ave. 10 - 120 % Vnom    Current Ave. 10 - 120 % Inom    Watts sum 10 - 120 %    10 - 120 % VA sum ...

  • Page 27: Relay Output

    2. For Energy Output in KWhr 10. Relay output (Optional) : Pulse rate The Meter is provided with relay for pulse output System Power* Divisor Pulse as well as for limit switch. 1 per kWhr Up to 3600 kW 1 per MWhr 10.1 Pulse Output : Above 3600 kW 3.
  • Page 28 Trip point: of trip point & hysteresis such that % trip point + % hysteresis should be less than 100%. TABLE 3 of nominal value for Hi-Alarm & 10% to 100 % of nominal value for Lo-Alarm. Example for Phase angle: If trip point is set 70% then maximum Hysteresis: applicable hysteresis is 42.8%.

  • Page 29: Phasor Diagram

    Parameter No. 4 (Current1) Trip Point = 50% Hysteresis = 50% of trip point Energising Delay: 2S De-energising Delay: 2S 1) Hi alarm & Energised relay 2) Hi alarm & De-energised relay Relay Energise Relay De-energise Relay De-energise Relay Energise Input Input Trip point...

  • Page 30: Installation

    Sign of Sign of Sign of Inductive / Connections Quadrant Active Reactive Power Capacitive Power ( P ) Power ( Q ) Factor ( PF ) Import Import Export Export Inductive means Current lags Voltage Caution Capacitive means Current leads Voltage In the interest of safety and functionality this When Multifunction Meter displays Active power ( P )with “...
  • Page 31 # ANSI Installation steps 1. Insert 4 threaded rods by hands into the back of meter. 2. Mount the panel securely with lock washer and nut on each threaded rod.
  • Page 32 # DIN Installation steps 1. Remove the ANSI studs if it is there. 2. Insert 4 threaded rods by hands into the back of meter. 3. Mount the panel securely with lock washer and nut on each threaded rod.

  • Page 33: Emc Installation Requirements

    12.1 EMC Installation Requirements 12.2 Case Dimension & Panel Cut This product has been designed to meet the certification of the EU directives when installed to a good code of practice for EMC in industrial environments,e.g. 1. Screened output and low signal input leads or have provision for fitting RF suppression components,such as ferrite absorbers, line filters etc., in the event...
  • Page 34 ANSI METER FRONT FACE 92 mm ANSI PANEL CUTOUT...

  • Page 35: Wiring

    12.3 Wiring 13. Connection Diagrams Input connections are made directly to screw type terminals with indirect wire INPUT pressure. Numbering is clearly marked on INPUT the connector. Choice of cable should meet local regulations. Terminal for voltage inputs will accept up to 4mm cable and for current inputs will accept up to 6mm cable and terminal for auxiliary inputs will accept up to 2.5mm solid cable.

  • Page 36: Optional Pluggable Module

    System 3 Phase 3 Wire / 4 Wire or Single INPUT INPUT L3 N Phase programmable at site Inputs Nominal Input 1. 110 V (63.5 V ) Voltage 2. 230 V (133 V ) 3. 415 V (239.6 V ) System PT Primary 100V to 1200 kV Values...
  • Page 37 Overload withstand Reference conditions for Accuracy Voltage input 2 x Rated Value Reference 23 C + 2 C (1s application temperature repeated 10 times (as per IEC 62053-21) at 10s intervals) Current input 20 x Rated value Accuracy for 0.5sec Voltage + 0.5 % of Auxiliary Supply...
  • Page 38 Controls Enclosure 2 push buttons User Interface Enclosure front IP 54 Enclosure front Standards with seal (optional) IP 65 EMC Immunity IEC 61000-4-3 Enclosure back IP 20 10V/m - Level 3 Industrial Low Level Dimensions 96mm x 96mm DIN Bezel Size EMC Emmision IEC 61326-1 : 2005 114mm x 114mm ANSI...
  • Page 39 Note : 1 per 100Wh (up to 1. Refer TABLE 4 for details. 3600W), 2. Above conditions are also applicable 1 per 100kWh (up to for Reactive & Apparent Energy. 3600 kW), 1 per 100MWh (above ModBus ( RS 485 ) Option : 3600 kW up to ModBus ( RS 485 ) Protocol...
  • Page 40 NOTE...
  • Page 41 WARRANTY Dear Sir, You are now the privileged owner of Multi Function 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 from...
  • Page 42 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. Thank you.
  • Page 43 Product and Technical Support Hoyt Electrical Instrument Works,Inc. 23 Meter Street Penacook, NH 03303 800-258-3652 or sales@hoytmeter.com...

This manual is also suitable for:

Alpha 42a plusAlpha 40a plus

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