HT instruments HT7051 - Manual (Page 2)

HT2055
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 Instrument features ............................................................................................................................. 4
3 PREPARATION FOR USE .......................................................................................................... 5
3.1 Initial inspections .................................................................................................................................. 5
3.2 Instrument power supply ...................................................................................................................... 5
3.3 Calibration ............................................................................................................................................ 5
3.4 Storage ................................................................................................................................................. 5
4 DESCRIPTION OF PARTS .......................................................................................................... 6
4.1 HT2055S station unit description ......................................................................................................... 6
4.1.1 Modify of supply voltage for HT2055S unit........................................................................................ 6
4.2 Description of test leads ....................................................................................................................... 7
4.2.1 Front view .......................................................................................................................................... 7
4.2.2 Top view ............................................................................................................................................ 7
4.2.3 Backside view .................................................................................................................................... 8
5 INITIAL OPERATIONS WITH HT2055M UNIT ............................................................................ 9
5.1 Settings ................................................................................................................................................. 9
5.1.1 Language selection ........................................................................................................................... 9
5.1.2 Help screen ....................................................................................................................................... 9
5.1.3 Synchronization ............................................................................................................................... 10
5.1.4 Default settings ................................................................................................................................ 11
5.1.5 Time/Date settings .......................................................................................................................... 11
5.2 Messages at display ........................................................................................................................... 11
6 INITIAL OPERATIONS WITH HT2055S UNIT .......................................................................... 12
6.1 Settings ............................................................................................................................................... 12
6.1.1 Default settings ................................................................................................................................ 12
6.1.2 Setting output power ....................................................................................................................... 13
6.1.3 Setting alarm condition .................................................................................................................... 13
6.2 Adjust contrast of display ................................................................................................................... 14
6.3 Help screens ...................................................................................................................................... 14
6.4 Messages at display ........................................................................................................................... 14
7 HOW TO PERFORM THE MEASUREMENTS .......................................................................... 15
7.1 Theory of Step/Contact voltage measurements ................................................................................. 15
7.2 Step/Contact voltage measurement ................................................................................................... 16
7.3 Earth resistance measurement .......................................................................................................... 21
7.4 Ground resistivity measurement ........................................................................................................ 23
8 OPERATION WITH MEMORY ................................................................................................... 25
8.1 Saving results ..................................................................................................................................... 26
8.2 Recall result at display ....................................................................................................................... 26
8.3 Delete saved results ........................................................................................................................... 27
9 CONNECTION OF THE INSTRUMENT TO PC ........................................................................ 28
9.1 Installation of software and initial configurations (Win XP) ................................................................ 28
10 MAINTENANCE ......................................................................................................................... 30
10.1 Replacement and charging batteries ................................................................................................. 30
10.2 Replacement fuses of HT2055S unit ................................................................................................. 30
10.3 Cleaning the instrument ..................................................................................................................... 30
10.4 End of life............................................................................................................................................ 30
11 TECHNICAL SPECIFICATIONS ............................................................................................... 31
11.1 General characteristics ....................................................................................................................... 32
11.2 Environment ....................................................................................................................................... 33
11.3 Standard accessories ......................................................................................................................... 33
11.4 Optional accessories .......................................................................................................................... 33
12 SERVICE ................................................................................................................................... 34
12.1 Warranty conditions ............................................................................................................................ 34
12.2 Service ................................................................................................................................................ 34