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Megger MIT400/2 CAT IV Insulation Resistance Tester

Megger
SKU: MEGGERMIT400/2
  • Used for electrical and industrial purposes, with live circuit detection stopping work being done on a live circuit
  • The MIT400/2 can conduct insulation testing at 250V, 500V, or 1000V, with range measurements up to 200GΩ
  • With an over voltage limit of 2%, the MIT4XX/2 models officially replace the older Megger MIT4XX models
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Megger MIT400/2 CAT IV Insulation Resistance Tester

The Megger MIT400/2 Insulation Tester (1004-731) is suitable for a wide range of applications - not only limited to electrical/industrial purposes, but commercial avionics testing, military land, marine and air communications, manufacture production line testing, electrostatic measurements, component testing and battery powered traction/lifting equipment tests as well.

Insulation resistance measurements can be conducted at 250V, 500V or 1000V using the MIT400/2, with ranges providing measurements up to 200GΩ. Continuity measurements can be carried out across a range of 0.01 to 999kΩ, with an auto null allowing a resistance of up to 10Ω to be zeroed prior to testing.

A live circuit detection inhibits both continuity and insulation resistance measurements from being conducted on energised circuits, protecting the instrument from potential damage.

Moreover, the instrument is CAT IV 600V safety approved whilst being ingress protected to IP54. Enclosed in a rubber housing the MIT400/2 is also shock-proof and offers excellent grip when hand held.

The Megger MIT4XX/2 models officially replace the special application insulation testers that were the MIT400, MIT410, MIT420 and MIT430. The main benefits of the new series include:

  • Over voltage limit of 2% - rather than the industry standard of 10-20%; ultimately reducing the chance of damage to circuits and components;
  • Variable test range (MIT420/2 and MIT430/2 only) – an exact and stable test voltage can be selected from between 10V and 1000V.
  • New redesigned carry case, back stand and 6 cell battery compartment with separate access to user-serviceable fuses.

Supplied with red and black silicone test leads, probes and clips, owners information CD, 6 x AA batteries and a hard carry case

Megger MIT400/2 key features:

  • Over voltage limit of 2%
  • 250V, 500V or 1000V insulation resistance test voltages
  • CAT IV 600V and IP54 rated

What's In The Box?

  • Red Lead 1.25m complete with probe
  • Black Lead 1.25m complete with probe
  • Red Croc Clip
  • Black Croc Clip
  • Instrument Rubber Boot
  • Calibration Certificate
  • Owner's CD
  • Hard carry case
  • Batteries
Specification

Test Voltage

  • MIT400/2: 250V, 500V, 1000V
  • MIT410/2, 420/2, 430/2: 50V, 100V, 250V, 500V, 1000V

Insulation Accuracy

  • 50 Volts: 0 GΩ ± 2% ± 2 digits ± 4.0% per GΩ
  • 100 Volts: 20 GΩ ± 2% ± 2 digits ± 2.0% per GΩ
  • 250 Volts: 50 GΩ ± 2% ± 2 digits ± 0.8% per GΩ
  • 500 Volts: 100 GΩ ± 2% ± 2 digits ± 0.4% per GΩ
  • 1000 Volts: 200 GΩ ± 2% ± 2 digits ± 0.2% per GΩ

General Specifications

  • Display Range: Analogue, 1GΩ full scale
  • Resolution: 0.1 kΩ
  • Short Circuit/Charge Current: 2 mA +0% -50% to EN 61557-2 (2007)
  • Open Circuit Voltage Insulation: -0% +2% ± 2V
  • Test Current: 1mA at min. pass value of insulation to a maximum of 2 mA max.
  • Leakage (not MIT400/2): 10% ±3 digits
  • Voltage: 3% ±3 digits ±0.5% of rated voltage
  • Timer Control (not MIT400/2): 60 second countdown timer
  • Note: Above specifications only apply when high quality silicone leads are being used
  • Continuity Measurement: 0.01 Ω to 1000 kΩ
  • Continuity Accuracy:
    ± 3% ± 2 digits (0 to 100Ω)
    ±5% ±2 digits (100 to 500kΩ)
    (500kΩ to 1MΩ unspecified)
    Service Error: BS EN 61557-4 (2007) - ± 2.0%, 0.1 Ω - 2 Ω ± 6.8%
  • Open Circuit Voltage: 5V ± 1V
  • Test Current: 200mA (-0mA + 20mA) (0.01Ω to 4Ω)
  • Polarity (not MIT400/2): Single polarity (Default)/Dual polarity (configurable on setup)
  • Lead resistance: Null up to 9.00Ω

Voltage

  • Voltage Range:
    AC - 10mV to 600V TRMS sinusoidal (15Hz to 400Hz)
    DC - 0 to 600V
  • Volt Range Accuracy:
    AC - ±2% ±1 digit
    DC - ±2% ±2 digit
    Service Error BS EN 61557-1
    (2007) - ±2.0% ±2d, 0V
    300V AC/DC ±5.1%
  • Waveform:
    Unspecified range - 0-10mV (15 to 400Hz)
    For non-sinusoidal waveforms additional specifications apply non-sinusoidal waveforms (±3% 2 digits>100mV to 600V TRMS) (±8% ± 2 digits 10mV to 100 mV TRMS

    • General Specifications

    • Frequency Measurement Range: 15Hz - 400Hz
    • Frequency Measurement Accuracy: ±0.5% ± 1 digit (100Hz to 400Hz unspecified)
    • Capacitance Measurement (MIT420/2 and 430/2): 1 nF to 10nF
    • Capacitance Measurement Accuracy: ±5.0% ± 2 digits (0.1nF - 1nF unspecified)
    • Storage Capacity: >1000 test results
    • Data Download: Bluetooth Wireless, Bluetooth Class II (MIT430/2 Only)
    • Range: up to 10m
    • Power Supply: 6 x 1.5V cells type IEC LR6 (AA, MN1500, HP7, AM3 R6HP) Alkaline 6 x 1.2 V NiMH rechargeable cells may be used
    • Battery Life: 3000 insulation tests with duty cycle of 5 sec OFF @1000V into 1MΩ
    • Charger (Optional): 12-15V DC (accessory interface)
    • Dimensions: Instrument 228mm x 108mm x 63mm (9.00 in x 4.25 in x 2.32in)
    • Weight: 600g (MIT400/2), (1.32lb)
    • Weight (instrument and case): 1.75kg (3.86lb)
    • Fuse: Use only 1 x 500mA (FF) 1000V 32 x 6 mm ceramic fuse of high breaking capacity HBC 30kA minimum. Glass Fuse. MUST NOT be fitted
Label Type Size Download
pdf Megger MIT400/2 Series Datasheet pdf 358.5 KB Download