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14

Analogue display

This simulates an analogue meter movement to give the user a better 
“feel” for how a measurement is progressing. The analogue display shows 
resistance only.

The display is also used to indicate how ‘result download’ and ‘deletion of 
results’ is progressing.

Secondary display

This part of the display shows the results of ‘time resistance’ method tests.

 

‘Pre-Test / During test’ Key action table.

Button press 

Key action  

 

Fn + Key action

      

Pre-test 

  During test  

Pre-test  

  During test

V

s

/V

t

 

Increase /  

Increase / 

Increase / 

Increase /  

 

decrease the 

decrease the  

decrease the  

decrease the 

 

test voltage in   

test voltage in 

test voltage in 

test voltage in 

 

major steps  

major steps   

minor steps 

minor steps

 

 

(IR only) 

 

(IR only)

 
V

s

 

AND V

t

 

Sets voltage  

Show set 

 

 

to 500V  

voltage

T

s

/ T

t

 

Increase / 

Display set time  Select main 

Display time

 

decrease the 

on main timer 

timer T1 or T2 

set for main

 

time of the 

briefly 

 

timer, T1 or 

 

selected timer 

 

 

T2 briefly 

T

AND T

t

  Reset timer to  

Display set 

Reset selected  

Display set

 

zero  

time on main 

timer to zero  

time on main

 

 

timer briefly 

 

timer briefly

Mode 

Select Test 

 

Cycle through 

 

Mode 

 

IR modes

Ω

/I 

Cycle through 

Cycle through 

 

 

results display 

results display 

 

of last test 

of current 

 

completed 

active test 

 

  

 

Record 

Turn recording 

 

Select 

 

On/Off 

 

download or

 

  clear 

stored

 

  data

V

s

 and V

t

 represent the test voltage buttons. T

s

 and T

t

 represent the 

timer buttons.

Содержание MIT1020/2

Страница 1: ...ess underutilized and idle equipment along with credit for buybacks and trade ins Custom engineering so your equipment works exactly as you specify Critical and expedited services Leasing Rentals Demo...

Страница 2: ...M MIT1020 2 10kV Digital Insulation Tester USER MANUAL...

Страница 3: ...manner possibly causing a loss of display while the circuit remains energised In this event the unit must be turned off and the circuit discharged manually n Test leads including crocodile clips must...

Страница 4: ...circumstances Failure to follow these instructions could result in damage to the instrument and or a hazard to the operator The word should is used to indicate that the instructions indicate best prac...

Страница 5: ...instrument performs automatic tests and has data storage and data retrieval facilities Polarization index and dielectric discharge tests are performed automatically and test duration and voltages can...

Страница 6: ...on table Connection UK International USA Earth Ground Yellow Green Green Neutral Blue White Live Line Brown Black If using a fused plug ensure that it is fitted with a 3 Amp fuse The instrument can be...

Страница 7: ...dicator Alarm Data recording Test modes Voltage at terminals Battery level Breakdown indicator High voltage warning indicator High voltage warning indicator Analogue display Timers Main T1 T2 Dielectr...

Страница 8: ...es between insulation resistance and current Power On Off button The instrument will only turn on if this button is pressed held and then released when the display responds The instrument will not tur...

Страница 9: ...ry display initially shows the PI polarity index DAR dielectric absorption ratio and on completion of the test the TC time constant and capacitance measurements Toggling the display shows insulation r...

Страница 10: ...ndition test runs for longer than 10 minutes as this is required for a PI reading Figure 2 The result of a polarity index test PI Test settings T1 and T2 times set in order to measure the DAR Test con...

Страница 11: ...the test mode Modes of test to be chosen from include an insulation resistance IR test a polarization index PI test a step voltage SV test and a dielectric discharge DD test The insulation resistance...

Страница 12: ...instrument now displays clr to indicate clear mode Press and hold down test button until clear process begins shown by analogue display lighting anti clockwise Press the MODE button to exit without d...

Страница 13: ...terminal For basic insulation tests and where there is little possibility of surface leakage affecting the measurement it is unnecessary to use the guard terminal i e if the insulator is clean and th...

Страница 14: ...lt to that selected in the previous test If the instrument has been switched off since the previous test the test voltage defaults to 250 V If there is an external voltage greater than 80 V present th...

Страница 15: ...voltage in test voltage in test voltage in test voltage in major steps major steps minor steps minor steps IR only IR only Vs AND Vt Sets voltage Show set to 500V voltage Ts Tt Increase Display set ti...

Страница 16: ...ments and can provide accurate measurements with up to 4mA of noise current present A level of noise exceeding the instruments specified capability will be indicated by an alternating sine wave on the...

Страница 17: ...ent symbol PI On completion of the test the instrument will display the insulation resistance recorded at 1 minute and 10 minutes under the segment symbols 1m and 16 TEST MODE SUMMARY 10m Pressing the...

Страница 18: ...limits of 10 k and 35 T Release the function button to save the current limit Adjusting the alarm threshold level automatically activates the alarm limit mode This is indicated by the A symbol turning...

Страница 19: ...leads are reasonably clean and dry The guard lead can be used to remove the effects of surface leakage if necessary When measuring resistances above 100 G the test leads should not be allowed to touc...

Страница 20: ...ads are available as an optional accessory from Megger The lead to the negative terminal is fully screened The screen is plugged into the Guard terminal diverting any stray leakage currents This consi...

Страница 21: ...t accuracy 23 C 5 5 nF Voltage output accuracy 0 C to 30 C 4 0 10 V of nominal test voltage at 1 G load Current measurement range 0 01 nA to 5 mA Current measurement accuracy 23 C 5 0 2 nA at all volt...

Страница 22: ...ips 1002 534 Optional Accessories HV test lead sets 3 x 3 m with un insulated small clips 8101 181 3 x 8 m with un insulated small clips 8101 182 3 x 15 m with un insulated small clips 8101 183 3 x 5...

Страница 23: ...PA 19403 England U S A Tel 44 0 1304 502 243 Tel 1 610 676 8579 Fax 44 0 1304 207 342 Fax 1 610 676 8625 Megger operate fully traceable calibration and repair facilities ensuring your instrument conti...

Страница 24: ...ttery charge level indicator will need to calibrated to the new battery s characteristics End of life disposal WEEE The crossed out wheeled bin placed on the Megger products is a reminder not to dispo...

Страница 25: ...723 2861 USA ONLY T 1 214 333 3201 F 1 214 331 7399 E ussales megger com Megger Z A Du Buisson de la Couldre 23 rue Eug ne Henaff 78190 TRAPPES France T 33 0 1 30 16 08 90 F 33 0 1 34 61 23 77 E infos...

Страница 26: ...uipment Have surplus equipment taking up shelf space We ll give it a new home Learn more Visit us at artisantg com for more info on price quotes drivers technical specifications manuals and documentat...

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