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HT78
Table of contents:
1.
SAFETY PRECAUTIONS AND PROCEDURES ..........................................................2
1.1.
1.2.
1.3.
1.4.
2.
GENERAL DESCRIPTION ...........................................................................................4
2.1.
2.2.
3.
TRMS and MEAN VALUE measuring instruments............................................................ 4
TRUE ROOT MEAN SQUARE VALUE and CREST FACTOR definitions........................ 4
PREPARATION FOR USE ...........................................................................................5
3.1.
3.2.
3.3.
3.4.
4.
Preliminary ........................................................................................................................ 2
Before use ......................................................................................................................... 3
After use ............................................................................................................................ 3
Measuring (overvoltage) categories definitions................................................................. 3
Initial .................................................................................................................................. 5
Power supply..................................................................................................................... 5
Calibration ......................................................................................................................... 5
Storage.............................................................................................................................. 5
OPERATING INSTRUCTIONS.....................................................................................6
4.1.
Instrument description ....................................................................................................... 6
4.1.1.
4.2.
4.2.1.
4.2.2.
4.2.3.
4.2.4.
4.2.5.
4.2.6.
4.3.
General informations ....................................................................................................... 12
Batteries replacement ..................................................................................................... 12
Cleaning .......................................................................................................................... 12
End of life ........................................................................................................................ 12
TECHNICAL SPECIFICATIONS ................................................................................13
6.1.
Characteristics................................................................................................................. 13
6.1.1.
6.1.2.
6.2.
6.3.
Safety........................................................................................................................................ 13
General data ............................................................................................................................. 13
Environmental conditions ................................................................................................ 14
6.2.1.
Climatic conditions.................................................................................................................... 14
Accessories ..................................................................................................................... 14
6.3.1.
7.
AC Current measurement........................................................................................................... 9
Leakage current measurement on Single phase system ......................................................... 10
Leakage current measurement on Three phase system.......................................................... 11
MAINTENANCE .........................................................................................................12
5.1.
5.2.
5.3.
5.4.
6.
Range and ON/OFF selector...................................................................................................... 7
D-H key....................................................................................................................................... 7
FILTER selector.......................................................................................................................... 7
LOCK selector ............................................................................................................................ 7
AutoPowerOFF ........................................................................................................................... 7
DC analogical output .................................................................................................................. 8
How to perform the measurements ................................................................................... 9
4.3.1.
4.3.2.
4.3.3.
5.
Front panel.................................................................................................................................. 6
Description of parts ........................................................................................................... 7
Standard accessories ............................................................................................................... 14
SERVICE....................................................................................................................15
7.1.
7.2.
Warranty conditions......................................................................................................... 15
Service ............................................................................................................................ 15
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