HT HT4020 Manuel D'utilisation page 34

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Table of 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 ................................................................. 3 
2.
GENERAL DESCRIPTION .............................................................................................. 4
 
3.
 
PREPARATION FOR USE .............................................................................................. 4
3.1. 
Preliminary checks ............................................................................................................ 4 
3.2. 
Power supply ..................................................................................................................... 4 
3.3. 
Calibration ......................................................................................................................... 4 
3.4. 
Storage .............................................................................................................................. 4 
4.
OPERATING INSTRUCTIONS ........................................................................................ 5
 
4.1. 
Instrument description ....................................................................................................... 5 
 
4.1.1.
 
4.1.2.
 
4.1.3.
 
4.1.4.
4.2. 
Description of function keys .............................................................................................. 7 
 
4.2.1.
 
4.2.2.
 
4.2.3.
 
4.2.4.
4.3. 
Operating instructions ....................................................................................................... 8 
 
4.3.1.
 
4.3.2.
 
4.3.3.
 
4.3.4.
 
4.3.5.
 
4.3.6.
 
4.3.7.
 
4.3.8.
 
4.3.9.
 
4.3.10.
4.3.10.1.
4.3.10.2.
5.
MAINTENANCE ............................................................................................................ 22
 
5.1. 
General information ......................................................................................................... 22 
5.2. 
Battery replacement ........................................................................................................ 22 
5.3. 
Cleaning .......................................................................................................................... 22 
5.4. 
End of life ........................................................................................................................ 22 
6.
 
TECHNICAL SPECIFICATIONS ................................................................................... 23
6.1. 
Technical characteristics ................................................................................................. 23 
 
6.1.1.
6.2. 
General specifications ..................................................................................................... 24 
6.3. 
Environmental conditions ................................................................................................ 24 
 
6.3.1.
6.4. 
Accessories ..................................................................................................................... 24 
 
6.4.1.
7.
SERVICE ....................................................................................................................... 25
 
7.1. 
Warranty conditions ......................................................................................................... 25 
7.2. 
After-sale service ............................................................................................................. 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 
1.800.561.8187
Controls description ..................................................................................................................... 5
Alignment marks .......................................................................................................................... 5
Rubber cap use to hold test leads ............................................................................................... 6
Disable Auto Power OFF function ............................................................................................... 6
key .................................................................................................................................. 7
FUNC/HARM key ............................................................................................ 7
MAX/MIN/PK and MAX/MIN/PK/H key ...................................................................................... 7
ENERGY and ENERGY/H key .................................................................................................. 7
AC/DC Voltage measurement ..................................................................................................... 8
AC Voltage frequency measurement ........................................................................................... 9
Measurement of Voltage Harmonics (HT4022) ......................................................................... 10
Resistance and continuity test ................................................................................................... 11
AC Current measurement .......................................................................................................... 12
AC Frequency current measurement ......................................................................................... 13
Measurement of Current Harmonics (HT4022) ......................................................................... 14
Power/Energy measurement on single phase system .............................................................. 15
Power/Energy measurement on three phase balanced system ................................................ 16
Detection of phase sequence indication with 1 wire method ..................................................... 17
 
Detection of phase coincidence with 1 wire method ................................................................ 19
 
Phase detection with 1 wire method ........................................................................................ 21
Reference standards .................................................................................................................. 24
Climatic conditions ..................................................................................................................... 24
Standard accessories ................................................................................................................ 24
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