Amprobe DM-4 Power-Quality-Recorder - Manual (Page 3)

8. RECORDING IN PROCESS........................................................................................................32
9. STOPPING A RECORDING........................................................................................................33
9.1 STOP A RECORDING WITH THE REMOTE USER INTERFACE (PDA).................33
9.2 STOP A RECORDING WITH THE DOWNLOAD SUITE............................................33
10. CONNECTING THE INSTRUMENT TO A PC...........................................................................34
11. MEASURING PROCEDURES..................................................................................................35
11.1 USING THE INSTRUMENT IN A SINGLE PHASE SYSTEM..................................35
11.2 USING THE INSTRUMENT IN A THREE PHASE
4- WIRE SYSTEM (WYE)........................................................................................36
11.3 USING THE INSTRUMENT IN A THREE PHASE 3- WIRE
SYSTEM (DELTA).......................................................................................................38
12. MAINTENANCE........................................................................................................................40
12.1 GENERAL................................................................................................................40
12.2 BATTERY REPLACEMENT.....................................................................................40
13. TECHNICAL SPECIFICATIONS..............................................................................................41
13.1 FEATURES.............................................................................................................41
13.1.1 VOLTAGE MEASUREMENT................................................................................41
13.1.2 VOLTAGE ANOMALIES DETECTION (MANUAL SELECTION OF
RANGE) VOLTAGE.................................................................................................41
13.1.3 CURRENT MEASUREMENT (USING EXTERNAL TRANSDUCER)...................41
13.1.4 POWER MEASUREMENT (COSΘ: 0.5C – 0.5I).................................................42
13.1.5 COSΘ MEASUREMENT.....................................................................................42
13.1.6 MEASUREMENT OF HARMONICS....................................................................43
13.1.7 TEMPERATURE DRIFT.......................................................................................43
13.1.8 SAFETY............................................................................................................... 43
13.1.9 GENERAL CHARACTERISTICS.........................................................................44
13.2 ENVIRONMENT......................................................................................................44
13.2.1 OPERATING CONDITIONS................................................................................ 44
13.3 ACCESSORIES...................................................................................................... 45
13.3.1 STANDARD ACCESSORIES...............................................................................45
14. APPENDIX 1 – RECORDABLE PARAMETERS: SYMBOLS.................................................46
15. APPENDIX 2 – THEORETICAL OUTLINES............................................................................47
15.1 VOLTAGE ANOMALIES (VOLTAGE SAG AND SURGE; SPIKE)...........................47
15.2 VOLTAGE AND CURRENT HARMONICS..............................................................48
15.2.1 THEORY.............................................................................................................. 48
15.2.2 LIMIT VALUES FOR HARMONICS.....................................................................49
15.2.3 PRESENCE OF HARMONICS: CAUSES........................................................... 50
15.2.4 PRESENCE OF HARMONICS: CONSEQUENCES............................................50
15.3 POWER AND POWER FACTOR: DEFINITIONS...................................................51
15.3.1 CONVENTIONS ON POWERS AND POWER FACTORS..................................53
15.3.2 3 PHASE 3 WIRE SYSTEM..............................................................................54
15.4 MEASURING METHOD: OUTLINES......................................................................55
15.4.1 INTEGRATION PERIODS....................................................................................55
15.4.2 POWER FACTOR CALCULATIONS....................................................................55
16. AFTER-SALE SERVICE..........................................................................................................56
16.1 WARRANTY............................................................................................................56
16.2 SERVICE................................................................................................................56
DM-4 Power Quality Recorder