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Megger Malaysia

Megger MIT400 250/500/1000 V CAT IV Insulation & Continuity Tester

Category: Megger
  • Insulation testing up to 1000 V and 20 GΩ
  • Patented analog arc and dual digital display
  • CAT IV 600 V rating
  • TRMS & DC Voltage measurement
  • Continuity testing at 200 mA or 20 mA down to 0.01
  • Pass/Fail limit alarms
  • PI/DAR and Timer function
  • Three year product warranty
  • IP54 rated

    The Megger MIT400 250/500/1000 V CAT IV Insulation & Continuity Tester has been designed for electrical testing by power utilities, industrials, telecommunication companies, commercial/domestic electricians and anyone with unique test voltage requirements. The wide range of features also makes the Megger MIT-40X ideal for maintenance technicians and engineers.

    The Megger MIT 400 replaces the well-established BM400 insulation tester range, giving greater functionality with simplified operation, greater application range and increased safety.
    Industrial and Power Electrical Installation Testing:
    The Megger MIT400 includes all the features required for electricians, technicians and engineers working in a range of industries. Available features are selected to make testing easy and fast in a range of situations. Typical applications include:
    • Building/Campus electrical maintenance
    • Large and small scale electrical installations
    • Periodic electrical systems inspection and testing
    • Cable testing
    Features
    CAT IV 600 V rating Provides greater safety when testing at higher voltage levels
    Adjustable insulation test voltages Provides 250 V to 1000 V or 50 V to 1000 V.
    Dual digital display readout Allows display of complimentary test information simultaneously (for example: MΩ plus test voltage or MΩ plus leakage current)
    Digital and analog arc display Includes not only the digital readout but also Megger’s patented analog arc to replicate the response of a moving coil display
    Exceptional measurement range from 20 GΩ to 200 GΩ Highest insulation test range available on the market, providing a superior range of measurement applications.
    Choice of 20 mA or 200 mA continuity testing Allows user to select lower continuity range thus increasing battery life considerably
    Continuity auto-test capability Enables real two-handed operation without the need to press the test button
    Adjustable continuity limit alarm Allows pass/fail limits to be sent to speed testing
    Automatically perform PI and DAR tests User is able to quickly perform two important diagnostic tests... Polarization Index (PI) and Dielectric Absorption Ratio (DAR)
    True RMS voltage measurement Allows accurate voltage measurement on noisy lines
    Auto ranging voltage measurement Automatically adjusts range from millivolts to 600 V AC or DC, eliminating the need to keep changing ranging
    Live circuit warning Automatically warns of contact to a live circuit, voltage is displayed and testing is inhibited
    Auto fuse warning Warns of fuse failure automatically. No need to test the fuse manually.
    Buzzer select button Enable or disable buzzer as required with resistance also displayed on the screen

    Instrument Safety
    The Megger MIT400 is designed to meet all of the requirements of IEC1010-2 and EN61557 and meets the safety requirements for use on CAT IV 600 V.

    Specific safety features include:
    • Any live circuit detection inhibits any insulation testing on circuits above 50 V (75 volts on Telecom models)
    • Any live circuit detection and test inhibit on continuity measurements
    • Default display of live circuit voltage on all ranges
    • Detection and inhibit features function even if the protections fuse has failed

    Also, fast detection circuitry prevents damage to the instruments if accidentally connected to live circuits or across phases.

    Instrument Dual Digital Display
    The Megger MIT/400 offers an impressive dual digital display readout. The Megger MIT400 allows complimentary information to be displayed simultaneously such as:
    • MΩ plus test voltage
    • MΩ plus leakage current
    • Capacitance plus cable length (a test measurement for telecom applications)
    The second digital display simultaneously displays the following information, depending upon the mode of operation or function chosen:
    • Insulation voltage being delivered
    • INS test modes
    • Leakage current
    • Test current
    • Timer modes
    • Countdown times
    • Cable length
    Specifications
    Insulation Nominal test voltages 250 V, 500 V, 1000 V
    Insulation resistance range 20 GΩ
    Range Full Scale Accuracy 1000 volts ±3%, ±2 digits, ±0.2% per GΩ
    500 volts ±3%, ±2 digits, ±0.4% per GΩ
    250 volts ±3%, ±2 digits, ±0.8% per GΩ
    100 volts ±3%, ±2 digits, ±2.0% per GΩ
    50 volts ±3%, ±2 digits, ±4.0% per GΩ
    10 volts ±3%, ±2 digits, ±2.0% per 100 MΩ
    Analog range 1 GΩ full scale
    Short Circuit Current 2 mA +0% -50%
    Terminal voltage -0% +20% ±1 V
    Test Current on load 1 mA at min. pass value of insulation specified in BS7671, HD384 and IEC364, 2 mA max.
    EN61557 Operating range 0.10 MΩ to 1.00 GΩ
    Leakage Current 10% ±3 digits
    Voltage display 3% ±3 digits ±0.5% of rated voltage
    Polarization Index (PI) 10 min/1 minute ratio
    Dielectric Absorption Ratio (DAR) 60 sec/30 sec ratio
    Continuity Measurement 0.01 Ω to 99.9 Ω (0 to 100 Ω on analog scale)
    Accuracy: ±3% ±2 digits (0 to 100 Ω)
    Open circuit voltage 5 V ±1 V
    Test current 200 mA (–0 mA +20 mA)
    (0.01 Ω to 9.99 Ω)
    20mA (±1 mA)
    (10.0 Ω to 99.9 Ω)
    Zero offset at probe tips 0.10Ω typical
    Lead resistance zeroing Up to 9.00 Ω
    Buzzer Variable limit 1Ω, 2Ω, 5Ω, 10Ω, 20Ω
    Resistance Measurement 0.01 kΩ to 1000 kΩ (0 to 1 MΩ on analog scale)
    Accuracy ±3% ±2 digits
    Open circuit voltage 5 V ±1 V
    Short circuit current 20 µA ± 5 µA
    Voltage range 0 to 600 V d.c. ±2% ±2 digits
    10 mV to 600 V TRMS sinusoidal (40 to 400 Hz) ±2% ±2 digits
    0 to 1000 V on Analog scale
    Unspecified input level 0 - 10 mV (40 to 400 Hz)
    Result storage Capacity >1000 test results
    Download Bluetooth wireless
    Bluetooth Class Class II
    Range up to 10 m
    Power Supply: 5 x 1.5 V cells type IEC LR6 (AA, MN1500, HP7, AM3 R6HP) Alkaline NiMH rechargeable cells may be used.
    Battery life 2200 insulation tests with duty cycle of 5 sec ON /55 sec OFF @ 1000 V into 1 MΩ
    Dimensions
    (Instrument and case)    		 18 in. x 7 in. x 3.5 in. (456 x 178 x 89 mm)
    Weight
    (Instrument and case)    		 3.86 lb (1.75kg)
    Fuse Use only a 500 mA (FF) 1000 V 32 x 6 mm ceramic fuse of high breaking capacity HBC 50 kA minimum. Glass fuses MUST NOT be fitted.
    Safety Protection Meets EN 61010-1 (1995) to 600 V phase to earth, Category IV
    E.M.C In accordance with IEC 61326 including amendment No.1
    Temperature effects
    (Temperature coefficient)    		 <0.1% per °C up to 1 GΩ
    Environmental Operating range -10 to +55°C
    Operating humidity 90% RH at 40°C max.
    Storage temperature range -25 to +70°C
    Calibration Temperature +20°C
    Maximum altitude 2000 m
    Dust and water protection IP54 Protected against dust and splashing water

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