Amprobe MEGATEST-1000 Megohmmeter - Manual (Page 2)

1. OVERVIEW............................................................................................................................................................ 2
1.1 INITIAL INSPECTION .................................................................................................................................. 2
1.2 POWER SUPPLY ........................................................................................................................................... 2
1.3 CALIBRATION .............................................................................................................................................. 2
1.4 STORAGE....................................................................................................................................................... 2
2. SAFETY PRECAUTIONS AND PROCEDURES............................................................................................... 3
2.1 PRIOR TO USE ............................................................................................................................................. 3
2.3 DURING USE................................................................................................................................................. 4
2.4 AFTER USE.................................................................................................................................................... 4
3. INSTRUMENT DESCRIPTION........................................................................................................................... 5
3.1 R OTARY S WITCH P OSITIONS ............................................................................................................................ 5
3.2 D EFINITION OF K EYS ........................................................................................................................................ 6
4. CALIBRATION PROCEDURE............................................................................................................................ 7
4.1 CANCELLATION OF CALIBRATION PARAMETERS ............................................................................. 8
5. SWITCH POSITION FUNCTIONS: .................................................................................................................... 9
5.1 “LOW Ω” POSITION ......................................................................................................................................9
5.1.1 CONTINUITY TEST: ................................................................................................................................... 9
5.1.2 "AUTO", "R+", "R-", "R+TIMER", "R-TIMER" MODES: ...................................................................... 10
5.2 “M Ω” POSITION..........................................................................................................................................14
5.2.1 INSULATION RESISTANCE: ................................................................................................................ 14
5.2.2 “MAN”, “AUTO”, “TIMER” MODES ................................................................................................... 14
5.3 HOW TO SAVE, RECALL AND CLEAR TEST DATA ............................................................................ 21
5.3.1 SAVE........................................................................................................................................................ 21
5.3.2 RECALL.................................................................................................................................................... 22
5.3.3 CLEAR ...................................................................................................................................................... 23
5.4 RESET PROCEDURE .................................................................................................................................. 24
5.5 DEFAULT PARAMETERS.......................................................................................................................... 24
5.5.1 DEFAULT PARAMETERS LOW Ω...........................................................................................................24
5.5.2 DEFAULT PARAMETERS M Ω................................................................................................................24
5.5.3 MEMORY DEFAULT PARAMETERS...................................................................................................... 24
6. PRACTICAL EXAMPLES OF ELECTRICAL TESTS................................................................................... 25
6.1 LOW CONTINUITY MEASUREMENT ..................................................................................................... 25
6.2 INSTALLATION RESISTANCE ................................................................................................................. 26
6.3 CHECKING THE CIRCUIT SEPARATION ............................................................................................... 30
6.4 MEASUREMENT OF FLOOR INSULATION RESISTANCE IN MEDICAL ROOMS CEI 64-4............ 32
7. CONNECTING INSTRUMENT TO PC ............................................................................................................ 34
8. PRINTING OF DATA ON SERIAL PRINTER (OPTIONAL) ....................................................................... 35
9. MAINTENANCE .................................................................................................................................................. 36
9.1 GENERAL .................................................................................................................................................... 36
9.2 BATTERY REPLACEMENT....................................................................................................................... 36
9.3 INSTRUMENT CLEANING ........................................................................................................................ 36
10. TECHNICAL SPECIFICATIONS................................................................................................................. 37
11. WARRANTY AND SERVICE CONDITIONS ............................................................................................. 40
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