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MI 3121 Smartec Insulation / Continuity

Warnings and notes

Notes related to measurement functions:

General

If there is any irregular condition on input terminals then the selected measurement
can't be performed.

Insulation resistance,

and

continuity

measurements shall be performed on de-

energized objects, i.e. voltage between test terminals should be lower than 10 V!

PASS / FAIL indication is enabled when limit is set to ON. Apply appropriate limit
value for evaluation of measurement results.

Insulation resistance

When measuring insulation resistance between installation conductors all loads
must be disconnected and all switches closed!

The instrument automatically discharge tested object after finished measurement.

Click the TEST key twice for continuous measurement.

Continuity functions

Parallel resistance paths and interfering currents in measured circuit will influence
the test result!

If necessary compensate test lead resistance before performing continuity
measurement, see

5.2.3.

Measurement of resistance of wire wound components like transformer or motor
windings is possible only in continuous function due to great influence of the
winding inductance.

Содержание SmarTEC

Страница 1: ...Insulation Continuity MI 3121 Instruction manual Version 1 2 Code no 20 751 246...

Страница 2: ...ipment meets the requirements of the EU European Union concerning safety and electromagnetic compatibility regulations 2008 METREL The trade names Metrel Smartec Eurotest Autosequence are trademarks r...

Страница 3: ...accessories 16 4 Instrument operation 17 4 1 Function selection 17 4 2 Settings 18 4 2 1 Initial settings 18 4 2 2 Date and time 19 4 2 3 Commander 20 5 Measurements 21 5 1 Insulation resistance 21 5...

Страница 4: ...Technical specifications 35 8 1 Insulation resistance 35 8 2 Continuity 36 8 2 1 Resistance RLOW 36 8 2 2 Resistance CONT 36 8 3 Voltage frequency 36 8 3 1 Voltage 36 8 3 2 Frequency 36 8 4 General da...

Страница 5: ...tance Resistance to earth connection and equipotential bonding plus continuous resistance measurement The custom designed display with backlight offers easy reading of results indications and measurem...

Страница 6: ...competent authorized person Use only standard or optional test accessories supplied by your distributor Consider that older and some of new optional test accessories compatible with this instrument m...

Страница 7: ...results Insulation resistance When measuring insulation resistance between installation conductors all loads must be disconnected and all switches closed The instrument automatically discharge tested...

Страница 8: ...et polarity is shown in figure 2 2 Figure 2 2 Power supply socket polarity The instrument automatically recognizes the connected power supply adapter and begins charging Symbols Indication of battery...

Страница 9: ...ttery charger Notes The charger in the instrument is a pack cell charger This means that the battery cells are connected in series during the charging The battery cells have to be equivalent same char...

Страница 10: ...irements EN 61010 031 Safety requirements for hand held probe assemblies for electrical measurement and test Functionality EN 61557 Electrical safety in low voltage distribution systems up to 1000 V a...

Страница 11: ...ter 5 MEM Store recall clear tests in memory of instrument 6 Function selectors Select test function 7 Backlight Changes backlight level Switches the instrument power on or off 8 ON OFF The instrument...

Страница 12: ...ss to test connector and power supply adapter socket communication connectors 3 Charger socket Connection of power supply adapter 4 USB connector Communication with PC USB 1 1 port 5 PS 2 connector Co...

Страница 13: ...er 3 Fixing screw for battery compartment cover 4 Back panel information label 5 Holder for inclined position of the instrument 6 Magnet for fixing instrument close to tested item optional Figure 3 4...

Страница 14: ...ance Selected function is 7 mA Continuous resistance measurement Selected function is 200 mA Resistance to earth connection and equipotential bonding measurement Selected function is Voltage frequency...

Страница 15: ...on structure Indicates object number in installation structure 3 4 4 Auxiliary monitor The monitor shows additional result test parameter or message 3 4 5 Battery indication In the menu line the name...

Страница 16: ...r next click on the key BACKLIGHT 3 5 Instrument set and accessories 3 5 1 Standard set Instrument Short instruction manual Calibration certificate Test lead 2 x 1 5 m Test probe 2 pcs black red Croco...

Страница 17: ...Selects the test parameter to be set or modified TEST Runs selected test measurement function MEM Stores measured results recalls stored results CAL Compensation of test leads resistance Keys in test...

Страница 18: ...Figure 4 1 Options in Settings menu Keys UP DOWN Selects appropriate option TEST Enters selected option Function selectors Exits back to main function menu 4 2 1 Initial settings Selecting this optio...

Страница 19: ...ttings reset of the instrument can be recalled also if the TAB key is pressed while the instrument is switched on 4 2 2 Date and time Selecting this option will allow the user to set the date and time...

Страница 20: ...hed On Off in this menu Figure 4 4 Selection of commander support Keys UP DOWN Selects commander option TEST Confirms selected option Function selectors Exits back to main function menu Indications Co...

Страница 21: ...uctors of installation Insulation resistance of non conductive rooms walls and floors Insulation resistance of ground cables Resistance of semi conductive antistatic floors See chapter 4 1 Function se...

Страница 22: ...nect test cable to the top of the instrument and to the item to be tested see figure 5 2 Press the TEST key to perform the measurement double click for continuous measurement and later press to stop t...

Страница 23: ...57 4 200 mA CONT Continuous resistance measurement performed with 7 mA See chapter 4 1 Function selection for instructions on key functionality Figure 5 4 200 mA RLOW function example Test parameters...

Страница 24: ...Press the TEST key to perform the measurement After the measurement is finished store the result by pressing the MEM button optional Figure 5 6 Example of RLOW result Displayed result Main RLOW resis...

Страница 25: ...le to the instrument Compensate test leads resistance if necessary see section 5 2 3 Disconnect from mains supply and discharge the object to be tested Connect test leads to the tested object see figu...

Страница 26: ...rtant feature to obtain correct result Once compensation has been performed the compensation symbol appears on the screen Each of RLOW and CONT has each own compensation Circuits for compensating the...

Страница 27: ...age and frequency In the Volt menu the measured voltage and frequency are displayed See 4 1 Function selection for instructions on key functionality Figure 5 10 Voltage and frequency display Circuits...

Страница 28: ...o the instrument Connect test leads to the tested object see figure 5 11 Store current measurement result optional Measurement starts immediately after selection of VOLT function Figure 5 12 Example o...

Страница 29: ...scribes the identity of the measurement which object location This organization helps to handle with data in a simple and effective manner The main advantages of this system are Test results can be or...

Страница 30: ...result to the last selected location by default If the measurement is to be stored to the same location as the previous one just press the MEM key twice 6 4 Recalling test results Press shortly the ME...

Страница 31: ...clear all results TEST Confirms selected clear option CLR All see 6 5 1 CLR see 6 5 2 Opens last selected location to recall the results or change location see 6 4 Function selectors MEM TAB Exit back...

Страница 32: ...clearing individual results menu data structure field selected TAB Selects the location element Object Location UP DOWN Selects number of selected location element TEST Opens last result at selected l...

Страница 33: ...data RS 232 communication connect a PC COM port to the instrument PS 2 connector using the PS 2 RS232 serial communication cable USB communication connect a PC USB port to the instrument USB connector...

Страница 34: ...use with original type only otherwise the instrument may be damaged and or operator s safety impaired Position of fuses can be seen in Figure 3 4 in chapter 3 3 Back panel 7 2 Cleaning No special main...

Страница 35: ...f reading 20 0G 29 9G 100 indicative Voltage Measuring range V Resolution V Accuracy 0 1200 1 3 of reading 3 digits Nominal voltages 50 VDC 100 VDC 250 VDC 500 VDC 1000 VDC Open circuit voltage 0 20 o...

Страница 36: ...ith a fully charged battery Automatic polarity reversal of the test voltage 8 2 2 Resistance CONT Measuring range Resolution Accuracy 0 0 19 9 0 1 5 of reading 3 digits 20 1999 1 10 of reading Open ci...

Страница 37: ...w h d 14 cm 8 cm 23 cm Weight 1 37 kg without battery cells Reference conditions Reference temperature range 10 C 30 C Reference humidity range 40 RH 70 RH Operation conditions Working temperature ran...

Страница 38: ...ase see attached list of standard accessories for your set or contact your distributor for further information Function Suitable accessories Optional with ordering code A Insulation resistance INS Tes...

Страница 39: ...MI 3121 Smartec Insulation Continuity Accessory for specific measurements 39...

Страница 40: ...MI 3121 Smartec Insulation Continuity Accessory for specific measurements 40...

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