HT instruments HT9022 User Manual
Page 3
HT9022
EN - 1
Table of contents:
1.
PRECAUTIONS AND SAFETY MEASURES ........................................................................... 3
1.1.
Preliminary instructions .................................................................................................................... 4
1.2.
During use ........................................................................................................................................ 4
1.3.
After use ........................................................................................................................................... 4
1.4.
Definition of measurement (overvoltage) category .......................................................................... 5
2.
GENERAL DESCRIPTION ....................................................................................................... 6
2.1.
Measuring average values and TRMS values ................................................................................. 7
2.2.
Definition of true root mean square value and crest factor .............................................................. 7
2.3.
Harmonics ........................................................................................................................................ 7
3.
PREPARATION FOR USE ....................................................................................................... 8
3.1.
Initial checks ..................................................................................................................................... 8
3.2.
Instrument power supply .................................................................................................................. 8
3.3.
Calibration ........................................................................................................................................ 8
3.4.
Storage ............................................................................................................................................. 8
4.
OPERATING INSTRUCTIONS ................................................................................................. 9
4.1.
Instrument description ...................................................................................................................... 9
4.1.1.
Description of the controls ................................................................................................................... 9
4.1.2.
Alignment marks.................................................................................................................................. 9
4.1.3.
Hand protection ................................................................................................................................. 10
4.1.4.
Indication of the conventional direction of Current ............................................................................ 10
4.2.
Description of the keys ................................................................................................................... 10
4.2.1.
Keys F1 – F2 – F3 – F4 .................................................................................................................... 10
4.2.2.
Key H................................................................................................................................................. 10
4.2.3.
Key
.............................................................................................................................................. 10
4.3.
Initial screen ................................................................................................................................... 11
5.
INSTRUMENT FUNCTIONS ................................................................................................... 12
5.1.
Phase detection .............................................................................................................................. 12
5.2.
“Settings” position: Instrument settings .......................................................................................... 12
5.2.1.
General.............................................................................................................................................. 12
5.2.2.
Date/Time .......................................................................................................................................... 12
5.2.3.
Log .................................................................................................................................................... 13
5.2.4.
InRush ............................................................................................................................................... 13
5.2.5.
Continuity .......................................................................................................................................... 13
5.3.
Position “V ”: DC, AC+DC voltage measurement and phase sequence verification ................... 14
5.3.1.
DC voltage measurement.................................................................................................................. 14
5.3.1.1.
Key F4 “Fnz” .................................................................................................................................... 15
5.3.1.2.
Hold ................................................................................................................................................. 15
5.3.1.3.
Backlight .......................................................................................................................................... 15
5.3.2.
AC+DC voltage and Voltage Harmonics measurement .................................................................... 16
5.3.2.1.
Key F2 “Par” .................................................................................................................................... 16
5.3.2.2.
AC+DC voltage ................................................................................................................................ 16
5.3.2.2.1.
Key F4 “Fnz” in AC+DC voltage measurement ........................................................................... 17
5.3.2.3.
Voltage harmonics ........................................................................................................................... 17
5.3.2.3.1.
Key F4 “Fnz” in Voltage Harmonics measurement...................................................................... 17
5.3.2.4.
Hold ................................................................................................................................................. 18
5.3.2.5.
Backlight .......................................................................................................................................... 18
5.3.3.
Checking phase sequence and phase concordance with a lead ...................................................... 19
5.3.3.1.
Verification of Phase Sequence. ...................................................................................................... 19
5.3.3.2.
Verification of Phase Concordance .................................................................................................. 21
5.4.
Position “A ”: DC, AC+DC current measurement ........................................................................ 23
5.4.1.
DC current measurement .................................................................................................................. 23
5.4.1.1.
Key F4 “Fnz” .................................................................................................................................... 24
5.4.1.2.
Hold ................................................................................................................................................. 24
5.4.1.3.
Backlight .......................................................................................................................................... 24
5.4.2.
AC+DC current and Current Harmonics measurement ..................................................................... 25
5.4.2.1.
Key F2 “Par” .................................................................................................................................... 25
5.4.2.2.
AC+DC current ................................................................................................................................ 25
5.4.2.2.1.
Key F4 “Fnz” in AC+DC current measurement ........................................................................... 26
5.4.2.3.
Current harmonics ........................................................................................................................... 26
5.4.2.3.1.
Key F4 “Fnz” in Current Harmonics measurement ...................................................................... 26
5.4.2.4.
Hold ................................................................................................................................................. 27
5.4.2.5.
Backlight .......................................................................................................................................... 27