VEGA 76
EN - 2
6.4. POSITION "ENERGY".........................................................................................33
6.4.1. Symbols........................................................................................................33
6.4.2. "METER" mode............................................................................................34
7. STARTING A RECORDING.......................................................................................35
8. DURING A RECORDING...........................................................................................37
9. 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. USING THE INSTRUMENT IN A THREE PHASE 4 WIRE SYSTEM.................41
11.3. USING THE INSTRUMENT IN A THREE PHASE 3 WIRE SYSTEM.................42
12. MAINTENANCE........................................................................................................43
12.1. GENERAL...........................................................................................................43
12.2. BATTERY REPLACEMENT................................................................................43
12.3. CLEANING..........................................................................................................43
13. TECHNICAL SPECIFICATIONS...............................................................................44
13.1. FEATURES.........................................................................................................44
13.1.1. Voltage measurement (Autoranging)............................................................44
13.1.2. Detection of voltage anomalies: manual range selection..............................44
13.1.3. Current measurement (using external transducer) .......................................44
13.1.4. Power measurement (cosϕ: 0.5c – 0.5i).......................................................44
13.1.5. Cosϕmeasurement......................................................................................44
13.1.6. Measurement of harmonics..........................................................................45
13.1.7. Frequency measurement..............................................................................45
13.1.8. Compliance...................................................................................................45
13.1.9. Temperature drift..........................................................................................45
13.1.10. Safety ...........................................................................................................45
13.1.11. General Features..........................................................................................45
13.2. ENVIRONMENT .................................................................................................46
13.2.1. Environmental conditions..............................................................................46
13.2.2. EMC..............................................................................................................46
13.3. ACCESSORIES..................................................................................................46
13.3.1. Standard accessories...................................................................................46
13.3.2. Optional accessories ....................................................................................46
14. APPENDIX 1 – MESSAGES DISPLAYED ...............................................................47
15. APPENDIX 2 – RECORDABLE PARAMETERS: SYMBOLS..................................48
16. APPENDIX 3 – THEORETICAL OUTLINES.............................................................49
16.1. VOLTAGE ANOMALIES (VOLTAGE SAG AND SURGE)..................................49
16.2. VOLTAGE AND CURRENT HARMONICS.........................................................49
16.2.1. Theory ..........................................................................................................49
16.2.2. Limit values for harmonics............................................................................50
16.2.3. Presence of harmonics: causes....................................................................51
16.2.4. Presence of harmonics: consequences........................................................51
16.3. POWER AND POWER FACTOR: DEFINITIONS...............................................52
16.3.1. Conventions on powers and power factors...................................................53
16.3.2. 3 Phase 3 Wire System................................................................................54
16.4. MEASURING METHOD: OUTLINES..................................................................55
16.4.1. Integration periods........................................................................................55
16.4.2. Power factor calculations..............................................................................55
17. AFTER-SALE SERVICE...........................................................................................56
17.1. WARRANTY .......................................................................................................56
17.2. SERVICE............................................................................................................56
