Amprobe ACD-55HPQ Clamp-Meter - Manual (Page 5)

ACD-55HPQ
CONTENTS:
1. SAFETY PRECAUTIONS AND PROCEDURES....................................................................2
1.1. Preliminary instructions ................................................................................................2
1.2. During use ....................................................................................................................3
1.3. After use .......................................................................................................................3
1.4. Definition of measuring (overvoltage) category............................................................4
2. GENERAL DESCRIPTION .....................................................................................................5
3. PREPARATION FOR USE .....................................................................................................6
3.1. Preliminary checks .......................................................................................................6
3.2. Power supply................................................................................................................6
3.3. Calibration ....................................................................................................................6
3.4. Storage.........................................................................................................................6
4. OPERATING INSTRUCTIONS...............................................................................................7
4.1. Instrument description ..................................................................................................7
4.1.1. Controls description..................................................................................................7
4.1.2. Alignment marks.......................................................................................................7
4.1.3. Rubber cap use to hold test leads............................................................................8
4.1.4. AUTO POWER OFF function ...................................................................................8
4.2. Description of function keys .........................................................................................9
4.2.1.
FUNC key............................................................................................................9
4.2.2. D-H / key .............................................................................................................9
4.2.3. MAX/MIN/PK key......................................................................................................9
4.3. Description of rotary switch functions.........................................................................10
4.3.1. AC / DC voltage measurement...............................................................................10
4.3.2. Frequency measurement (with test leads) .............................................................11
4.3.3. Measurement of voltage harmonics .......................................................................12
4.3.4. Resistance and continuity measurement ...............................................................13
4.3.5. AC current measurement .......................................................................................14
4.3.6. Frequency measurement (from the jaws)...............................................................15
4.3.7. Measurement of current harmonics........................................................................16
4.3.8. Detection of phase sequence .................................................................................17
4.2.8.1. Detection of phase coincidence..........................................................................19
4.2.8.2. Phase detection ..................................................................................................21
5. MAINTENANCE....................................................................................................................22
5.1. General information....................................................................................................22
5.2. Battery replacement ...................................................................................................22
5.3. Cleaning .....................................................................................................................22
6. TECHNICAL SPECIFICATIONS...........................................................................................23
6.1. Characteristics............................................................................................................23
6.1.1. Safety standards.....................................................................................................24
6.1.2. General data...........................................................................................................24
6.2. Environmental conditions ...........................................................................................24
6.2.1. Climatic conditions..................................................................................................24
6.2.2. EMC........................................................................................................................24
6.3. Accessories ................................................................................................................24
6.3.1. Standard accessories .............................................................................................24
7. WARRANTY..........................................................................................................................25
8. APPENDIX: VOLTAGE AND CURRENT HARMONICS ......................................................26
8.1. Theory ........................................................................................................................26
8.2. Limit values for harmonics..........................................................................................27
8.3. Causes for the presence of harmonics ......................................................................27
8.4. Consequences of the presence of harmonics............................................................28
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