Megger MIT400/2 User Manual
  1. Manuals
  2. Brands
  3. Megger Manuals
  4. Measuring Instruments
  5. MIT400/2 Series
  6. User manual

Megger MIT400/2 User Manual

Mit400/2 series insulation and continuity testers
Hide thumbs Also See for MIT400/2:
Table of Contents

Advertisement

Quick Links

MIT400/2 Series
Insulation and continuity testers
User guide

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the MIT400/2 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Megger MIT400/2

Summary of Contents for Megger MIT400/2

  • Page 1 MIT400/2 Series Insulation and continuity testers User guide...

  • Page 2: Table Of Contents

    2 terminal + Guard (MIT2500) Test results recall 3 terminal test lead connection PI and DAR recall. SP5 Switched probe (not MIT400/2) Deleting test results Downloading test results AC/DC voltage and frequency Procedure for pairing your MIT to the PC...

  • Page 3: Introduction

    For your own safety and to get the maximum benefit from your instrument, please ensure that you read and understand the following safety warnings and instructions before attempting to use the instruments. This user guide describes the operation and functions of the MIT400/2 series of insulation and continuity test instruments. These instruments are designed and manufactured by:...

  • Page 4: G Safety Warnings

    All test leads, probes and crocodile clips must be in good order, clean and with no broken or cracked insulation. Verify ■ ■ the integrity of the test leads before making measurements. Only “Megger” approved test leads must be used with this product.

  • Page 5: Weee Directive

    Measurement equipment may be safely connected to circuits at the marked rating or lower. 2.2 WEEE Directive The crossed out wheeled bin symbol placed on Megger products is a reminder not to dispose of the product at the end of its life with general waste.

  • Page 6: General Description

    SP5 remote switched probe SP5 remote switched probe ■ ■ Download Manager software CD Download Manager software CD ■ ■ IMPORTANT - To extend your warranty to 3 years, please register your Instrument at www.megger.com within one month of purchase. MIT400/2 www.megger.com...

  • Page 7: Preparations For Use (All Instruments)

    4. Preparations for use (all instruments) 4.1 Batteries The Megger MIT400/2 series instruments are supplied with batteries fitted. When batteries become exhausted, refer to section 15 for battery replacement. Warning: Do not switch the instrument on or connect test leads with the battery cover removed.

  • Page 8: Instrument Overview

    Buzzer ON/OFF – not warning functions Insulation testing – Measures REN value during insulation test Capacitance testing – Measures REN value Backlight ON/OFF during capacitance test SETUP – Change setup value / After test – SAVE result MIT400/2 www.megger.com...

  • Page 9: Display Contents

    Save test measurement to memory Lock enabled / disabled Test result recall to screen Hazard voltage warning Delete test results Warning - Read user manual Bluetooth enabled ® Lead Null is enabled Battery condition Difference between two ohms Fuse fail warning measurements MIT400/2 www.megger.com...

  • Page 10: Terminal Overview

    5.3 Terminal Overview 2 terminal connection 2 terminal connection 3 terminal connection + Guard MIT400/2 www.megger.com...

  • Page 11: General Operating Instructions

    Use extreme care when using or measuring voltages above 30 V, particularly in high energy systems. Fused test leads are available as an optional accessory for local situations where increased protection is required. Hazardous voltages can exist on the insulation test range all the time the [TEST] button is locked down. MIT400/2 www.megger.com...

  • Page 12: Input Terminals

    - Figure 3 For instruments with connection (figure 3) above, the Red / Black test lead set should be connected to the appropriate sockets on the top of the instrument marked + and –, respectively. (see figure 3 ). MIT400/2 www.megger.com...

  • Page 13: Terminal Test Lead Connection

    Comparing continuity of conductors to a ground terminal for difference measurements ■ ■ Testing centre tapped electrical installations. ■ ■ Telecommunications: Testing voltage, continuity and Insulation between A, B and E or Tip Ring and Ground, without having to disconnect ■ ■ test leads. MIT400/2 www.megger.com...
  • Page 14 For example, in VOLTS mode, the voltages on the A-B pair, the A-E pair or the B-E pair can all be measured without having to disconnect the test leads from the A, B and E conductors. MIT400/2 www.megger.com...

  • Page 15: Sp5 Switched Probe (Not Mit400/2)

    Fused test leads are available as an optional accessory. 7.4 SP5 Switched probe (not MIT400/2, MIT405/2 ) The SP5 switch probe allows the user to start a test by pressing the test button on the probe, instead of on the instrument. This allows for complete hands-free testing and increases user safety as below: 1.

  • Page 16: Ac/Dc Voltage And Frequency Measurements

    Exceeding this voltage could cause damage or electric shock hazard Frequency measurement is not available on MIT400/2 and MIT405/2 model Note on TRMS measurement: In TRMS mode the MIT will measure both AC and DC components of the supply voltage and display the Trms value.

  • Page 17: For 3 Terminal Instruments (Mit481/2, Mit485/2 Only)

    6. If the display does not show the A-B option, press the A-E-B (T-G-R) button to change this mode, as below: - Figure 14 7. With each press, the display will change from: and back to - Figure 15 Or, if 'T-G-R' is enabled in setup: MIT400/2 www.megger.com...

  • Page 18: Result Storage

    > 1sec. Refer to section 12 for further information. WARNING - Where the A-E-B (T-G-R) symbol disappears, a voltage is present on a pair not currently selected, Press A-E-B (T-G-R) to locate the live pair or pairs. MIT400/2 www.megger.com...

  • Page 19: Insulation Resistance Testing

    ]. The Instrument will display the range voltage selected in the display as below: 0.01 0.01 - Figure 17 MIT420/2 and MIT430/2 -Figure 17a MIT400/2 and MIT410/2 3. Connect the test leads to the circuit to be measured. MIT400/2 www.megger.com...
  • Page 20 9.1.4 Measurement PASS/FAIL The display can show PASS or FAIL when the measurement is above or below the threshold in Setup when enabled. Refer to section 13 SETUP. This supersedes the test voltage display. 0.01 - Figure 20 MIT400/2 www.megger.com...
  • Page 21 The display will replace the insulation test voltage with the leakage current during the insulation test, as below: 0.01 µ Note: Smaller readout displays leakage current. - Figure 22 4. Press the uA/s/v button again to return to test voltage display. MIT400/2 www.megger.com...

  • Page 22: Variable Voltage Insulation Testing (Mit430/2, Mit485/2, Mit2500)

    1. Select one of the test voltages on the MW measurement mode using the range knob [ 2. Connect the test leads to the circuit to be measured. 3. Press the DAR-PI-T button on the keypad as below: MIT400/2 www.megger.com...
  • Page 23 5. Press and release the TEST button to start the test. The display will show a count-down timer and the current insulation value, as above: 0.01 - Figure 25 At the first measurement interval the MIT will display the measured value and log this in temporary memory. MIT400/2 www.megger.com...
  • Page 24 3. Press the TEST button. A count down from the limit configured In the SETUP menu will start. At the end of the count down, the MIT will make a measurement and display the result as a resistance. MIT400/2 www.megger.com...

  • Page 25: For 3 Terminal Instruments (Mit481/2, Mit485/2 Only)

    6. If the display does not show the A-B option, press the A-E-B (T-G-R) button to change this mode. 4 00 6 00 8 00 2 00 100 0 - Figure 30 7. With each press, the display will change from: - Figure 31 Or, if 'T-G-R' is enabled in setup: - Figure 31a MIT400/2 www.megger.com...

  • Page 26: Esd Testing Mode

    9.5.2 Leakage current display Whilst the test is running it is possible to display the leakage current rather than the test voltage in the smaller digital readout. To display the LEAKAGE CURRENT during the test, see section 9.1.6 MIT400/2 www.megger.com...

  • Page 27: Ren Mode

    . The display will show a calculation or the REN number based on the result of the measurement. Note: Selection of the method depends on circuit design. A known circuit should be tested to establish which method is applicable to the type of installation being tested. MIT400/2 www.megger.com...

  • Page 28: Continuity Testing [Ω]

    The test current at which the measurement was made is displayed on the small digital readout, as highlighted below: 4 00 6 00 8 00 2 00 100 0 - Figure 33 MIT400/2 www.megger.com...

  • Page 29: Single Or Bi-Directional Testing

    Standard unfused 1.2m test leads = 0.05 ohm ■ ■ 10A fused 1.2 m test leads = 0.07 ohm ■ ■ 500mA Fused 1.2m test leads = 1.80 ohms ■ ■ These are only a guide and can change significantly between manufacturers. MIT400/2 www.megger.com...

  • Page 30: Buzzer Pass/Fail Threshold

    10.7 Test current - 20 mA / 200 mA The continuity test current can be changed from 200 mA to 20 mA where extended battery life is the priority, refer to section 13 - SETUP (ISc) 10.8 Measurement for 3 terminal instruments See section 7.3 MIT400/2 www.megger.com...

  • Page 31: Visual Fast Continuity (Silent Buzzer) Mode

    3. Press the ∆Ω button. The measured value transfers to the small digital display. The large display now shows the difference (∆Ω) value 4. Make another continuity measurement. The display will show the difference between the two values. 5. To clear the REL value press the ∆Ω button again Note: The REL function works across all three terminal configurations. MIT400/2 www.megger.com...

  • Page 32: Capacitance Measurements

    11. Capacitance measurements (Except MIT400/2, MIT410/2) The MIT400/2 and MIT410/2 can measure circuit or component capacitance. The test is automatic and starts the test immediately on connection of a circuit. If capacitance is large the circuit can take time to charge. During this charge time the display will show "- - -". On completion of the test the display will show the measured capacitance, and under range symbol "0.1 nf"...

  • Page 33: Saving, Recalling And Downloading Test Results

    4. Press the STORE key to record the test result. - Figure 40 A unique identification number is allocated to each test result which is displayed for 2 seconds before returning to the test result. - Figure 41 5. Result is now stored. MIT400/2 www.megger.com...

  • Page 34: Test Results Recall

    2. Locate the particular test result identification number by using the UP and DOWN buttons, then press ‘OK’ to select. 3. The test result will be displayed. To scroll through the different measurements used in calculating the PI or DAR ratio, use the DOWN only button. MIT400/2 www.megger.com...

  • Page 35: Deleting Test Results

    ® 2. Megger Download Manager software must be installed on the destination PC Megger “Download Manager” can be installed from the supplied CD or downloaded from the Megger web site. Follow the on-screen installation instructions during installation process. 12.5 Procedure for pairing your MIT to the PC 1.

  • Page 36: Downloading Data To The Pc

    12.6 Downloading data to the PC 1. Ensure Download Manager is running on the PC. 2. Ensure the MIT is paired to the PC as above. 3. Select the “MEGGER MIT400-2 Series” icon in Download Manager, as below: MIT400/2 www.megger.com...
  • Page 37 XLS (opens with no header conversion. Consequently the headers may not be easily interpreted) ® as would be the case using Megger CSV viewer. Further information on the options for Megger Download Manager can be found in the Download manager help files in the application. MIT400/2...

  • Page 38: Setup Configuration Options

    BM50/4, MIT410TC/3, MIT405/2, MIT415/2, 0.5 MW MIT417/2: 0.5, 10, 20, 50, 100, 200, 500, 1000 MW MIT400/2, MIT410/2, MIT420/2, MIT430/2, MIT481/2, MIT485/2, MIT2500: 0.5, 1, 2, 3, 4, 5, 10, 20, 30, 40, 50, 100, 200, 300, 400, 500, 1000 MW...

  • Page 39: Specification

    All quoted accuracies are at +20 °C. Insulation: Test voltage Nominal: MIT400/2 250 V, 500 V, 1000 V MIT410/2, 420/2,430/2 50 V, 100 V, 250 V, 500 V, 1000 V Insulation accuracy 50 Volts. 10 GW ± 2% ± 2 digits ± 4.0% per GW 100 Volts.
  • Page 40 Charger (Optional): 12-15 V dc (accessory interface) Dimensions Instrument 228 mm x 108 mm x 63 mm (9.00 in x 4.25 in x 2.32 in) Weight 600 g (MIT400/2), (28.74 oz ) 815 g (MIT2500) (27.22 oz) Weight (instrument and case) 1.75 kg (3.86 lb) Fuse...

  • Page 41: Battery And Fuse Replacement

    Charging with a reversed cell can cause localised heating and possible damage to the case. Battery cells should not be left in an instrument which may remain unused for an extended period. 15.2.1 Battery Voltage Battery voltage should be changed to 1.2 V if NiMH are used. See Section 13 Setup. MIT400/2 www.megger.com...

  • Page 42: Blown Fuse Indicator

    5. Replace the cover and retaining screw. 15.5 Preventive maintenance The MIT400/2 series instruments require very little maintenance. Test leads should be checked before use to ensure there is no damage. Ensure batteries are removed if the instrument is left unused for an extended period.

  • Page 43: Repair And Warranty

    New instruments are covered by a 3 year warranty from the date of purchase by the user, the 2 and 3 year being conditional on the free registration of the product on www.megger.com. You will need to log in, or first register and then login to register your product. The 2 and 3 year warranty covers faults, but not recalibration of the instrument which is only warranted for one year.
  • Page 44 MIT400/2 www.megger.com...
  • Page 45 OTHER TECHNICAL SALES OFFICES Toronto CANADA, Sydney AUSTRALIA, Madrid SPAIN, Mumbai INDIA, and the Kingdom of BAHRAIN. Megger products are distributed in 146 countries worldwide. This instrument is manufactured in the United Kingdom. The company reserves the right to change the specification or design without prior notice.

This manual is also suitable for:

Mit405/2Mit415/2Mit417/2Mit420/2Mit430/2Mit481/2 ... Show all

Table of Contents

Save PDF