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are effected when the Screen Lock symbol stops flashing and 
disappears.

Battery and fuse replacement 

Battery condition and replacement

The battery condition indicator is displayed at all times that the 
instrument is switched on, as below: 100%, 75% and 50%.

Replacement batteries type is: 5 x LR6 (AA), 1.5 V alkaline, or 5 x  
1.2 V NiMH.

Note: NiMH or NiCAD rechargeable batteries show a lower charge 
than alkaline batteries, and may not give much warning before 
becoming exhausted.

Procedure to replace batteries

When the low battery symbol appears, the cells are nearly 
exhausted and should be replaced as soon as possible. To 
install or replace the cells, 

disconnect the test leads

, switch 

the instrument 

OFF

 and loosen the screws holding the battery 

compartment cover in place. Remove the cover and lift out the 
cells. Ensure that the replacement cells are fitted with the correct 
polarity in accordance with the label in the battery compartment. 
Replace and re-secure the battery compartment cover. Remove 
the cells if the instrument is not going to be used for an extended 
period of time.

WEE Directive

The crossed out wheeled bin symbol on the instrument and on the 
batteries is a reminder not to dispose of them with general waste at 
the end of their life.
Megger is registered in the UK as a producer of electrical and 
electronic equipment.
Registration number WEE/H0146QT.

Battery disposal

Instructions on the safe removal of batteries can be found in this 
document.
Batteries in this product are classified as portable batteries under 
the Batteries Directive and when spent, should be disposed of in 
the UK according to Local Authority requirements. 
For disposal of batteries in other parts of the EU contact your local 
distributor.
Megger is registered in the UK as a producer of batteries.
Registration number BPRN00142.

Blown fuse indicator 

To check the instrument fuse, switch to an insuation range and 
press the TEST button. If the fuse is ruptured, the flashing symbol 
is displayed.

Summary of Contents for MIT415/2

Page 1: ...M MIT415 MIT417 Insulation and continuity tester User Guide ...

Page 2: ...of it is damaged n All test leads probes and crocodile clips must be in good order clean and with no broken or cracked insulation n Ensure that hands remain behind guards of probes clips when testing n National Safety Authorities may recommend the use of fused test leads when measuring voltage on high energy systems n Replacement fuses must be of the correct type and rating Failure to fit the corr...

Page 3: ...est lead probes also observe voltage discharges to a safe level On battery cover see section 2 0 notes 10 and 11 At terminals do not exceed rated input voltage t Equipment protected throughout by Double Insulation Class II c Equipment complies with relevant EU Directives Equipment complies with C tick requirements Do not dispose of in the normal waste stream Maximum input voltage 600 V rms 600V G ...

Page 4: ...omponents of the supply voltage AC DC In DC mode only the DC component is measured 1 Rotate selector switch to the V position 2 Connect test leads to the circuit under test 3 Press the TRMS button to select DC or return to TRMS 4 The measured voltage will be displayed on the main digital scale in units of V or mV as appropriate In TRMS mode the measured frequency Hz will be simultaneously displaye...

Page 5: ...lay 5 The insulation test can be locked on by pressing the lock button whilst holding down the TEST button To disable lock press the TEST button or lock button 6 By pressing the uA V s button the leakage current can be displayed 7 Release the TEST button before removing the test leads to enable the instrument to discharge the circuit under test If the display shows VOLTS wait until it reaches zero...

Page 6: ... minutes a second test result is stored t2 The resultant ratio is then displayed on the screen The same procedure applies for the DAR timed tests however the test duration is 60 seconds with the first result t1 taken at 30 seconds and the second at 60 seconds t2 Results can be recalled to screen using the uA v s t keys Note DO NOT press PI DAR t s as it will change the test mode and erase the curr...

Page 7: ...aning symbol Default setting Setting options BUZ Set top threshold for continuity buzzer in ohms 2 Ω 1 2 5 10 20 Buzzer sounds if result is less than set value Ω Loc Lock button ON OFF ON ON OFF ISC Setup maximum continuity short circuit current 200 mA 20 mA 200 mA default 200 mA Setup procedure 1 Turn the instrument ON by rotating the selector switch to the Setup position The firmware version is ...

Page 8: ...dance with the label in the battery compartment Replace and re secure the battery compartment cover Remove the cells if the instrument is not going to be used for an extended period of time WEE Directive The crossed out wheeled bin symbol on the instrument and on the batteries is a reminder not to dispose of them with general waste at the end of their life Megger is registered in the UK as a produ...

Page 9: ...t use alcohol based cleaners Specification All quoted accuracies are at 20 C Insulation Nominal test voltages for MIT415 10 V 25 V 50 V 100 V 250 V 500 V Nominal test voltages for MIT417 10 V 25 V 50 V 100 V 250 V 500 V 1000 V Range full scale accuracy All ranges 2 2 digits up to 100 MΩ Then 1000 volts 3 2 digits per GΩ 500 volts 3 2 digits 0 4 per GΩ 250 volts 3 2 digits 0 8 per GΩ 100 volts 3 2 ...

Page 10: ...rating range 0 01 kΩ to 1000 kΩ 0 to 1 MΩ on analogue scale Accuracy 3 up to 50 kΩ then 5 2 digits Open circuit voltage 5 V 1 V Short circuit current 1 5 mA 0 2 mA Voltage range 0 to 600 V d c 2 2 digits 10 mV to 600 V TRMS sinusoidal 40 400 Hz 2 2 digits 0 to 1000 V on analogue scale Unspecified input level 0 10 mV 40 400 Hz For non sinusoidal waveforms additional specifications apply 3 2 digits ...

Page 11: ...meet EN 61010 1 1995 to 600 V phase to earth Category IV Refer to safety warnings see section 2 E M C In accordance with IEC 61326 including amendment No 1 Temperature effects Temperature coefficient 0 1 per C up to 1 GΩ 0 1 per C per GΩ above 1 GΩ Environmental Operating range 20 C to 55 C Operating humidity 95 RH at 0 ºC to 35 C 70 RH 35 C to 55 C Storage temperature range 30 C to 80 C Calibrati...

Page 12: ... set and crocodile clips 1002 001 SP5 Remote switch probe 1002 774 Calibration certificate Rubber boot 6231 802 Instrument case 5410 420 User guide 2000 171 Optional accessories and replacements Fused 2 wire test lead set and crocodile clips 1002 015 ...

Page 13: ...it is necessary to retun an instrument for repair a Returns Authorisation number must first be obtained by contacting one of the addresses shown You will be asked to provide key information such as the instrument serial number and fault reported when the number is issued This will enable the Service Department to prepare in advance for the receipt of your instrument and to provide the best possibl...

Page 14: ...y NSW 2125 Australia T 61 0 2 9659 2005 F 61 0 2 9659 2201 E ausales megger com Megger Limited Unit 106 550 Alden Road Markham Ontario L3R6A8 Canada T 1 416 298 9688 Canada only T 1 416 298 6770 F 1 416 298 0848 E casales megger com Megger products are distributed in 146 countries worldwide This instrument is manufactured in the United Kingdom The company reserves the right to change the specifica...

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