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Table of Contents
Related Manuals for HT Italia VEGA 76
Summary of Contents for HT Italia VEGA 76
- Page 1 © Copyright HT ITALIA 2004 Release EN 2.00 - 08/06/2004...
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Page 3: Table Of Contents
VEGA 76 Contents: PRECAUTIONS AND SAFETY MEASURES ..............3 1.1. GENERAL ......................3 1.2. PRELIMINARY INSTRUCTIONS ................3 1.3. DURING USE ......................4 1.4. AFTER USE ......................4 GENERAL DESCRIPTION...................5 2.1. INTRODUCTION ....................5 2.2. FUNCTIONS......................5 2.3. INITIAL SCREEN ....................5 PREPARING THE INSTRUMENT................6 3.1. PRELIMINARY CHECK..................6 3.2. - Page 4 VEGA 76 6.4. POSITION "ENERGY"..................33 6.4.1. Symbols......................33 6.4.2. "METER" mode ....................34 STARTING A RECORDING..................35 DURING A RECORDING ...................37 STOPPING A RECORDING OR AN ENERGY MEASUREMENT ......38 10. CONNECTING THE INSTRUMENT TO A PC ............39 11. MEASURING PROCEDURES ..................40 11.1. USING THE INSTRUMENT IN A SINGLE PHASE SYSTEM ......40 11.2.
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Page 5: Precautions And Safety Measures
VEGA 76 1. PRECAUTIONS AND SAFETY MEASURES 1.1. GENERAL This instrument has been designed in compliance with Standard EN 61010. CAUTION For your own safety and to avoid damaging the instrument follow the procedures described in this instruction manual and read carefully all notes... -
Page 6: During Use
VEGA 76 1.3. DURING USE CAUTION An improper use may damage the instrument and/or its components or injure the operator • When the instrument is connected to the circuit under test do not touch any unused terminal. • When measuring current, other currents located near the leads may affect the measuring accuracy. -
Page 7: General Description
VEGA 76 2. GENERAL DESCRIPTION 2.1. INTRODUCTION VEGA 76 represents a new approach to the world of electrical measurements. Computer assisted instruments like this permit an easy and fast analysis of a huge quantity of data. 2.2. FUNCTIONS The instrument can: •... -
Page 8: Preparing The Instrument
VEGA 76 3. PREPARING THE INSTRUMENT 3.1. PRELIMINARY CHECK This instrument was checked both mechanically and electrically prior to shipment. All possible cares and precautions were taken to let you receive the instrument in perfect conditions. Notwithstanding we suggest you to check it rapidly (eventual damages may have occurred during transport –... -
Page 9: How To Operate
VEGA 76 4. HOW TO OPERATE 4.1. INSTRUMENT - DESCRIPTION Legend: 1. Inputs for voltage and current 2. RS232 serial output 3. Plug for external power supply 4. Display 5. Selector switch 6. Keyboard START STOP HOLD SAVE ENTER MENU 4.2. -
Page 10: Display - Description
VEGA 76 4.3. DISPLAY - DESCRIPTION The display is a graphic module with a resolution of128 x 128 pixels (16384 pixels overall). Each pixel has a dimension of 0.5mm x 0.5mm, the visible area is a square of 73mm x 73mm. -
Page 11: Menu General
VEGA 76 5. MENU GENERAL By pressing MENU the following screen will be displayed: MENU GENERAL ANALYZER MEMORY RESET ANALYZER CONFIG RECORDER CONFIG CONTRAST DATE&TIME LANGUAGE ↓ ↑ It’s not possible to enter the MENU during a recording or a Real Time Energy measurement. -
Page 12: Basic Setting: Analyzer Config
VEGA 76 5.2. BASIC SETTING: ANALYZER CONFIG By selecting ANALYZER CONFIG and pressing ENTER, the following screen will be displayed: ANALYZER CONFIG SYSTEM :3PH4W FREQUENCY:50HZ CURRENT RANGE:1000A CLAMP TYPE: STD TV RATIO:0001 PASSWORD:ON ↓ ↑ This page of settings can be confirmed by pressing ENTER or cancelled by pressing ESC. -
Page 13: How To Set The Type Of Clamp
VEGA 76 5.2.4. How to set the type of clamp The value of this parameter must be always equal to the type of clamp being used. Three types of clamps are available: • STD: standard clamps or current transformers • FlexINT: flexible clamps without integrator •... -
Page 14: Basic Setting: Recorder Config
VEGA 76 5.3. BASIC SETTING: RECORDER CONFIG This option permits to check and eventually modify the recording parameters and the selected parameters (up to a maximum of 64). The calculation of the selected values is not affected by the selector’s position. If the number of selected values exceeds 64 the message "too many... - Page 15 VEGA 76 To Select MANUAL or AUTOMATIC MENU start/stop mode, place the cursor on RECORDER CONFIG MANU AUTO using START multifunction key F1 or F2 and select MANU the desired mode using F3 or F4. STOP Use the multifunction keys F1, F2 to...
- Page 16 VEGA 76 Use the multifunction keys F1, F2 to position the cursor on the desired word and use the multifunction keys F3 / F4 to modify the value or select / deselect the desired parameter (it’s selected if marked in black).
- Page 17 VEGA 76 From 3 page of RECORDER CONFIG MENU ENTER RECORDER CONFIG CO-GENERATION:ON POWER:Pg ENERGY:Pg ↓ ↑ Example of 4 page In order to select the POWER to be recorded use the multifunction keys F1, F2 to position the cursor on the corresponding “Pg”...
- Page 18 VEGA 76 From 3 page of RECORDER CONFIG MENU ENTER RECORDER CONFIG CO-GENERATION:ON POWER:Pg ENERGY:Pg ↓ ↑ Example of 4 page In order to select the ENERGIES to be recorded use the multifunction keys F1, F2 to position the cursor on the corresponding “Pg”...
- Page 19 VEGA 76 Symbols Description Advised settings ☺ The recording of all selected parameters will start at 00 seconds START:MAN after pressing START/STOP (see chapter 7). ☺ The recording of all selected parameters will be interrupted STOP:MAN manually by pressing START/STOP (see chapter 9).
- Page 20 VEGA 76 ON = the instrument is able to face situations of CO-GENERATION of electrical equipment (that is, the equipment under test is able to generate energy besides absorbing it). Accordingly, the instrument will record the powers and energies both absorbed CO-GENERATION and generated (see paragraph 16.3.1).
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Page 21: Analyzer Memory
VEGA 76 5.4. ANALYZER MEMORY This option permits to display: • The present content of the instrument memory • The size of memorized data • The residual space available for future recordings (expressed in days and hours) All stored data can be displayed only if downloaded to a PC by means of the software. -
Page 22: Reset
VEGA 76 5.5. RESET This option re-establishes the default settings of the instrument. The default settings of the instrument consist of: • ANALYZER CONFIG: Frequency: 50Hz Full scale of the clamps: 1000A Transforming ratio of voltmetric transformers: Clamp Type: FLEX... -
Page 23: Switch Functions
VEGA 76 6. SWITCH FUNCTIONS For a simple usage, the main functions of the instrument can be selected by rotating the selector: • Position "VOLTAGE": to display voltage and corresponding harmonics (see paragraph 6.1) • Position "CURRENT": to display current and corresponding harmonics (see paragraph 6.2) -
Page 24: Meter" Mode
VEGA 76 6.1.2. "METER" mode On rotating the switch to this position the instrument selects automatically the METER mode corresponding to one of the below screens according to the settings made as per paragraph 5.2. 27.09.00 17:35:12 27.09.00 17:35:12 27.09.00... -
Page 25: Harm" Mode
VEGA 76 6.1.3. "HARM" mode By selecting the HARM mode one of the below screens will be displayed according to the settings made as per paragraph 5.22. The screens show the harmonics (see paragraph 16.2) of the phase or phase-to-phase voltage. -
Page 26: Wave" Mode
VEGA 76 6.1.4. "WAVE" mode By selecting the WAVE mode one of the below screens will be displayed according to the settings made as per paragraph 5.2. The screens show the waveform of the phase or phase-to-phase voltage. 27.09.00 17:35:12 27.09.00... -
Page 27: Position "Current
VEGA 76 6.2. POSITION "CURRENT" This function permits to display in real time the RMS value of AC/DC currents, the peak and Thdl value (see paragraph 16.2) of the 3 phase currents, the waveform and the harmonic spectrum of the 3 phase currents. -
Page 28: Meter" Mode
VEGA 76 6.2.2. “METER" mode On rotating the switch to this position the instrument selects automatically the METER mode corresponding to one of the screens below according to the settings made as per paragraph 5.2. 27.09.00 17:35:12 27.09.00 17:35:12 27.09.00... -
Page 29: Harm" Mode
VEGA 76 6.2.3. “HARM" mode By selecting the HARM mode one of the screens below will be displayed according to the settings made as per paragraph 5.2. The screens show the harmonics (see paragraph 16.2) of the phase currents. 27.09.00 17:35:12 27.09.00... -
Page 30: Wave" Mode
VEGA 76 6.2.4. "WAVE" mode By selecting the WAVE mode one of the below screens will be displayed according to the settings made as per paragraph 5.2. The screens show the waveform of the phase currents. 27.09.00 17:35:12 27.09.00 17:35:12 = 230.2... -
Page 31: Position "Power
VEGA 76 6.3. POSITION "POWER" This function permits to display in real time the RMS value of AC/DC voltage, the peak and ThdV value of the 3 phase voltages, the waveform of the 3 phase voltages, the RMS value of AC/DC currents, the peak and Thdl of the 3 phase currents, the waveform of the 3 phase currents. -
Page 32: Meter" Mode
VEGA 76 6.3.2. "METER" mode On rotating the switch to this position the instrument selects automatically the METER mode corresponding to one of the below screens according to the settings made as per paragraph 5.2. 27.09.00 17:35:12 27.09.00 17:35:12 27.09.00... -
Page 33: Peak Energy Demand
VEGA 76 6.3.2.1. Peak energy demand In three-phase systems, by selecting POWER and pressing F1 key thrice you can reach the “Peak Demand” mode. This mode shows the values corresponding to the running recording or to last performed recording (if any recording is running). -
Page 34: Wave" Mode
VEGA 76 6.3.3. "WAVE" mode By selecting the WAVE mode one of the below screens will be displayed according to the settings made as per paragraph 5.2. The screens show the waveform of the phase currents and the phase (or phase-to-phase) voltage. -
Page 35: Position "Energy
VEGA 76 6.4. POSITION "ENERGY" This function permits to display the values of the phase and total active powers, the value of the phase and total capacitive and inductive reactive powers, the values of the power factors and phase and total cosϕ. Furthermore, the instrument is able to measure directly (see 6.4.2) the values of the phase and total active energies and the values of the phase... -
Page 36: Meter" Mode
VEGA 76 6.4.2. "METER" mode On rotating the switch to this position the instrument selects automatically the METER mode corresponding to one of the below screens according to the settings made as per paragraph 5.2. 27.09.00 17:35:12 27.09.00 17:35:12 27.09.00... -
Page 37: Starting A Recording
VEGA 76 7. STARTING A RECORDING According to paragraph 5.3 a recording can be started manually or automatically. Therefore, after setting all parameters and leaving the Menu, the instrument will start to record: • MANUALLY: the recording starts when the instrument time reaches “00”... - Page 38 VEGA 76 The chosen configuration is the following • ANALYZER CONFIG: Frequency: 50Hz Full scale of the clamps: 1000A Transforming ratio of voltmetric transformers: Clamp Type: FLEX Type of electrical equipment: 4-wire Password: enabled • RECORDER CONFIG: Start: Manual (the recording is started...
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Page 39: During A Recording
VEGA 76 8. DURING A RECORDING If during a recording the external power supply is de-energized, the instrument will continue the recording using the internal battery power until batteries are exhausted (the data stored up to the point the instrument shuts down won’t get lost). For this we recommend you ALWAYS insert a new set of batteries before a long recording. -
Page 40: Stopping A Recording Or An Energy Measurement
VEGA 76 9. STOPPING A RECORDING OR AN ENERGY MEASUREMENT The instrument uses a protective routine to avoid the risk of being disturbed or interrupted during a recording or an energy measurement. Once a recording or a direct energy measurement (see paragraph 6.4.2) has been started (with the option PASSWORD enabled), after about 3 minutes from the last pressure on keys or switch rotation it won’t be... -
Page 41: Connecting The Instrument To A Pc
The instrument can be connected to a PC by means of the serial cable (C232NG1) supplied as a standard accessory. NOTE: A standard RS-232 cable will not work with VEGA 76. The available transmission speeds are the following: 9600, 19200, 57600 (default value) The value of the transmission speed (Baud Rate) is displayed on the initial screen (immediately after turning on the instrument) (see paragraph 2.3). -
Page 42: Measuring Procedures
VEGA 76 MEASURING PROCEDURES 11.1. USING THE INSTRUMENT IN A SINGLE PHASE SYSTEM CAUTION The maximum voltage between B1 and B4 inputs is 600 V~ (CATII) / 350V~ phase – earth or 600V~ (CATIII) / 300 V~ phase to earth. -
Page 43: Using The Instrument In A Three Phase 4 Wire System
VEGA 76 11.2. USING THE INSTRUMENT IN A THREE PHASE 4 WIRE SYSTEM CAUTION The maximum voltage between B1, B2, B3, B4 inputs is 600 V~ (CATII) / 350V~ phase – earth or 600V~ (CATIII) / 300 V~ phase to earth. -
Page 44: Using The Instrument In A Three Phase 3 Wire System
VEGA 76 11.3. USING THE INSTRUMENT IN A THREE PHASE 3 WIRE SYSTEM CAUTION The maximum voltage between B1 and B4 inputs is 600 V~ (CATII) / 350V~ phase – earth or 600V~ (CATIII) / 300 V~ phase to earth. -
Page 45: Maintenance
VEGA 76 MAINTENANCE 12.1. GENERAL This is a precision instrument. Strictly follow the instructions for use and storage reported in this manual to avoid any possible damage or danger during use. Do not use this tester under unfavorable conditions of high temperature or humidity. Do not expose to direct sunlight. -
Page 46: Technical Specifications
VEGA 76 TECHNICAL SPECIFICATIONS 13.1. FEATURES The accuracy is stated as [% of the reading ± number of digits]. It refers to the following atmospheric conditions: temperature 73°F± 2°F (23°C ± 1°C) with relative humidity < 75%. 13.1.1. Voltage measurement (Autoranging) -
Page 47: Measurement Of Harmonics
±(1.0%+1digit) 57 ÷ 63.6 0.1Hz 13.1.8. Compliance VEGA 76 complies with the Standards prescribed for: • class 2 EN61036 – static counters of active energy • class 3 IEC1268 – static counters of reactive energy 13.1.9. Temperature drift Temperature drift: 0,1 x accuracy/K 13.1.10. -
Page 48: Environment
VEGA 76 13.2. ENVIRONMENT 13.2.1. Environmental conditions Reference temperature: 73°F ± 2°F (23°C ± 1°C) 32°F to 122°F (0°C ÷ 50 °C) Operating temperature: Relative humidity: <70% 14°F to 140°F (-10°C ÷ 60 °C) Storage temperature: Storage humidity: <80% 13.2.2. EMC This instrument has been designed in compliance with the EMS standards in force and its compatibility has been tested for EN61326-1 (1997) + A1 (1997). -
Page 49: Appendix 1 - Messages Displayed
VEGA 76 APPENDIX 1 – MESSAGES DISPLAYED Advices ☺ Message Description AUTONOM: Available memory autonomy for the recording which is being effected CLEAR ALL? (Enter) The operator is trying to cancel all the recordings effected Press ESC in order not to cancel the whole... -
Page 50: Appendix 2 - Recordable Parameters: Symbols
VEGA 76 APPENDIX 2 – RECORDABLE PARAMETERS: SYMBOLS Symbol Description V1, V2, V3 RMS value of the voltage of phase 1, phase 2, phase 3 respectively V12, V23 V31 Value of phase to phase voltages I1, I2, I3 RMS value of the current of phase 1, phase 2, phase 3 respectively... -
Page 51: Appendix 3 - Theoretical Outlines
APPENDIX 3 – THEORETICAL OUTLINES 16.1. VOLTAGE ANOMALIES (VOLTAGE SAG AND SURGE) VEGA 76 is able to record as voltage anomalies all those rms values, calculated every 10ms, beyond the percentage thresholds of the Voltage Reference (Vref) set during the programming from ±... -
Page 52: Limit Values For Harmonics
VEGA 76 LEGENDA: 1. Fundamental 2. Third Harmonic 3. Distorted Waveform Effect of the sum of 2 multiple frequencies. It can be noted that in (1) the index of the sigma is from 1 to the infinite. What happens in reality is that a signal does not have an unlimited number of harmonics: a number always exists after which the harmonics value is negligible. -
Page 53: Presence Of Harmonics: Causes
VEGA 76 These limits, theoretically applicable only for the supplier of electric energy, provide however a series of reference values within which the harmonics introduced into the network by the users must be contained. 16.2.3. Presence of harmonics: causes Any equipment that alters the sinusoidal wave or uses only a part of it causes distortions to the sinusoidal wave and consequently harmonics. -
Page 54: Power And Power Factor: Definitions
VEGA 76 The 5 and the 11 harmonic contrast the current flow through the motors making its operation harder and shortening their average life. In general, the higher the ordinal harmonic number , the smaller its energy is and therefore the impact it will have on the devices (except for transformers). -
Page 55: Conventions On Powers And Power Factors
VEGA 76 = RMS value of kth voltage harmonic between n phase and Neutral. = RMS value of kth current harmonic of n phase. = Phase displacement angle between kth voltage harmonic and kth current harmonic of n phase. Note: It is to be noted that the expression of the phase Reactive Power with non sine waveforms, would be wrong. -
Page 56: Phase 3 Wire System
VEGA 76 where: Symbol Significance Remarks Value of the active power + Positive parameter Pfc+ Capacitive power factor + (user) Pfi+ Inductive power factor + Value of the capacitive reactive power + Value of the inductive reactive power + Value of the active power -... -
Page 57: Measuring Method: Outlines
VEGA 76 16.4. MEASURING METHOD: OUTLINES The instrument is able to measure: voltages, currents, active powers, inductive and capacitive reactive powers, apparent powers, inductive and capacitive power factors, analogue or impulse parameters. All these parameters are analyzed in a digital way: for each phase (voltage and current), 6 x 128 samples are acquired on a module of 16 x 20ms, repeated for the three phases. -
Page 58: After-Sale Service
VEGA 76 AFTER-SALE SERVICE 17.1. WARRANTY This instrument is guaranteed against material or production defects, in accordance with our general sales conditions. During the warranty period the manufacturer reserves the right to decide either to repair or replace the product. - Page 60 Via Righi 126 48018 – Faenza (RA)- Italy Tel: +39-0546-621002 (4 linee r.a.) Fax: +39-0546-621144 email: ht@htitalia.it http://www.htitalia.com...
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