HT instruments HT7052 - Manual (Page 3)

HT7052
EN - 1
Table of Content:
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 Instrument description .......................................................................................................................... 6
4.2 Description of test leads ....................................................................................................................... 7
5 INITIAL OPERATIONS ................................................................................................................ 8
5.1 Switching on the instrument ................................................................................................................. 8
5.1.1 Mains powered instrument operation ................................................................................................ 8
5.1.2 Backlight operation ............................................................................................................................ 8
5.1.3 Autocalibration ................................................................................................................................... 8
5.2 Configuration and Setup of systems parameters ................................................................................. 9
6 HOW TO PERFORM THE MEASUREMENTS .......................................................................... 10
6.1 Theory of insulation resistance measurement ................................................................................... 10
6.1.1 Time dependence test – Diagnostic test ......................................................................................... 12
6.1.2 Withstanding voltage test ................................................................................................................ 15
6.2 Guard terminal .................................................................................................................................... 16
6.3 Use of internal filters ........................................................................................................................... 17
6.3.1 The purpose of filtering .................................................................................................................... 17
6.4 Voltage measurement ........................................................................................................................ 18
6.5 Insulation resistance measurement ................................................................................................... 19
6.5.1 Setting of parameters ...................................................................................................................... 19
6.5.2 Perform the measurement ............................................................................................................... 20
6.6 Diagnostic test .................................................................................................................................... 22
6.6.1 Setting of parameters ...................................................................................................................... 22
6.6.2 Perform the measurement ............................................................................................................... 23
6.7 Insulation resistance with step voltage test ........................................................................................ 25
6.7.1 Setting of parameters ...................................................................................................................... 25
6.7.2 Perform the measurement ............................................................................................................... 26
6.8 Withstanding voltage test ................................................................................................................... 28
6.8.1 Setting of parameters ...................................................................................................................... 28
6.8.2 Perform the measurement ............................................................................................................... 29
7 MANAGEMENT OF MEMORY DATA ....................................................................................... 30
7.1 Saving, recall and clear measurement results ................................................................................... 30
8 CONNECTION OF THE INSTRUMENT TO PC ........................................................................ 31
8.1 Installation of software and initial configurations (Win XP) ................................................................ 31
9 MAINTENANCE ......................................................................................................................... 33
9.1 General information ............................................................................................................................ 33
9.2 Replacement and charging batteries ................................................................................................. 33
9.3 Cleaning the instrument ..................................................................................................................... 33
9.4 End of life............................................................................................................................................ 33
10 TECHNICAL SPECIFICATIONS ............................................................................................... 34
10.1 Safety standards ................................................................................................................................ 35
10.2 General characteristics ....................................................................................................................... 36
10.3 Environment ....................................................................................................................................... 36
10.4 Accessories ........................................................................................................................................ 36
11 SERVICE ................................................................................................................................... 37
11.1 Warranty conditions ............................................................................................................................ 37
11.2 Service ................................................................................................................................................ 37