
HT77C
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
3.PREPARATION FOR USE ...........................................................................................4
3.1.Initial checks...................................................................................................................... 4
3.2.Instrument power supply ................................................................................................... 4
3.3.Storage.............................................................................................................................. 4
4.NOMENCLATURE........................................................................................................5
4.1.Instrument description....................................................................................................... 5
4.2.Alignment marks and hand protection............................................................................... 5
4.3.Description of functions keys............................................................................................. 6
4.3.1./key................................................................................................................................... 6
4.3.2.HOLD/MAXMIN key.................................................................................................................... 6
4.3.3.RANGE key ................................................................................................................................ 6
4.3.4.HFR key...................................................................................................................................... 6
4.3.5./key ................................................................................................................................. 6
4.3.6.Disabling the Auto Power Off function........................................................................................ 6
5.OPERATING INSTRUCTIONS.....................................................................................7
5.1.AC Current measurement ................................................................................................. 7
5.2.Leakage current measurement ......................................................................................... 8
5.3.Bluetooth connection with HTLeakage APP...................................................................... 9
6.MAINTENANCE .........................................................................................................10
6.1.General information......................................................................................................... 10
6.2.Batteries replacement ..................................................................................................... 10
6.3.Cleaning .......................................................................................................................... 10
6.4.End of life ........................................................................................................................ 10
7.TECHNICAL SPECIFICATIONS ................................................................................11
7.1.Technical characteristics ................................................................................................. 11
7.1.1.Technical specifications for measures according to EC/EN61557-13 Class 2 ........................ 12
7.1.2.Electrical specifications ............................................................................................................ 12
7.1.3.Reference guidelines................................................................................................................ 12
7.1.4.General characteristics............................................................................................................. 12
7.2.ENVIRONMENT.............................................................................................................. 13
7.2.1.Environmental conditions for use ............................................................................................. 13
7.3.Accessories..................................................................................................................... 13
7.3.1.Standard accessories ............................................................................................................... 13
8.SERVICE....................................................................................................................14
8.1.Warranty conditions......................................................................................................... 14
8.2.Service ............................................................................................................................ 14