NEPTUNE
EN - 1
TABLE OF CONTENTS
1. PRECAUTIONS AND SAFETY MEASURES ............................................................... 2
1.1. Preliminary instructions ..................................................................................................... 2
1.2. During use ......................................................................................................................... 3
1.3. After use ............................................................................................................................ 3
1.4. Definition of Measurement (Overvoltage) category ........................................................... 3
2. GENERAL DESCRIPTION ........................................................................................... 4
2.1. Measuring average values andTRMS values .................................................................... 4
2.2. Definition of true root mean square value and Crest factor ............................................... 4
3. PREPARATION FOR USE ........................................................................................... 5
3.1. Initial checks ...................................................................................................................... 5
3.2. Instrument power supply ................................................................................................... 5
3.3. Storage .............................................................................................................................. 5
4. NOMENCLATURE ........................................................................................................ 6
4.1. Description of the instrument ............................................................................................. 6
4.1.1. Instrument’s initial screen ........................................................................................................... 6
4.2. Description of function keys .............................................................................................. 7
4.2.1. Key GO/HOLD ............................................................................................................................ 7
4.2.2. Key H/H%/H ............................................................................................................................ 7
4.2.3. Key MODE/MXMNPK ................................................................................................................. 8
4.2.4. Keys / e / ZERO .............................................................................................................. 8
4.2.5. Key VTEST/LIM .......................................................................................................................... 8
4.2.6. LoZ function ................................................................................................................................ 9
4.2.7. AC+DC function .......................................................................................................................... 9
4.2.8. Inrush current function (INRUSH) .............................................................................................. 9
4.2.9. Disabling the Auto Power Off function ........................................................................................ 9
4.2.10. Setting the full scale for flexible clamp transducer ................................................................... 10
5. OPERATING INSTRUCTIONS ................................................................................... 11
5.1. DC voltage measurement ................................................................................................ 11
5.2. AC, AC+DC voltage measurement ................................................................................. 12
5.3. AC, DC, AC+DC voltage with low impedance (LoZ) ....................................................... 13
5.4. Resistance measurement and continuity test .................................................................. 14
5.5. Phase sequence and phase concordance with 1 terminal .............................................. 15
5.6. Measurement of insulation resistance ............................................................................. 17
5.7. Continuity of protective conductors with 200mA ............................................................. 23
5.7.1. Function ZERO – Zeroing of test cable resistance ................................................................... 27
5.8. Measurement of DC, AC, AC+DC, INRUSH current with clamp transducers ................. 29
6. MAINTENANCE ......................................................................................................... 33
6.1. Battery replacement ........................................................................................................ 33
6.2. Cleaning the instrument .................................................................................................. 33
6.3. End of life ........................................................................................................................ 33
7. TECHNICAL SPECIFICATIONS ................................................................................ 34
7.1. Technical characteristics ................................................................................................. 34
7.1.1. General characteristics ............................................................................................................. 36
7.2. Environmental conditions for use .................................................................................... 36
7.3. Accessories ..................................................................................................................... 36
8. ASSISTANCE ............................................................................................................. 37
8.1. Warranty conditions ......................................................................................................... 37
8.2. Assistance ....................................................................................................................... 37
9. THEORETICAL APPENDIXES ................................................................................... 38
9.1. Continuity of protective conductors ................................................................................. 38
9.2. Measurement of insulation resistance ............................................................................. 39
9.2.1. Polarization Index (PI) .............................................................................................................. 42
9.2.2. Dielectric Absorption Ratio (DAR) ............................................................................................ 42
9.3. Voltage and current harmonics ....................................................................................... 43
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