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Megger MIT400 Insulation and Continuity Tester

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The new Megger MIT400 insulation and 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 features of the MIT400 also make it ideal for maintenance technicians and engineers.

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SKU: Megger MIT400 Categories: , Tags: ,

Megger MIT400 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: M½ plus test voltage or M½ plus leakage current)
  • Digital and analogue 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 G½ to 200 G½ – 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 twohanded 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

Megger MIT400 Specifications

*All quoted accuracies are at +20° C.
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
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, HD384and IEC364, 2 mA max.
EN61557 Operating range 0.10 M½ 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
Notes (1) All ranges measure from 0.00 M½ upwards.
(2) Above specifications only apply when high quality silicone leadsare being used.
Continuity
Measurement 0.01 ½ to 99.9 ½ (0 to 100 ½ on analogue 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 ½ to 9.99 Ω)
20mA (±1 mA )
(10.0 ½ 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)For non-sinusoidal waveforms additional specification apply:
±3% ±2 digits 101 mV to 600 V TRMS and ±8% ±2 digits 10 mV to 100 mV TRMS
Default Voltmeter Operates at >25 V a.c. or d.c. on any range except OFF
Frequency 40 – 450 Hz (40 Hz – 99.9 Hz)
±0.5% ±1 digit (100 Hz to450 Hz)
Result storage
Capacity >1000 test results
Download Bluetooth wireless
Bluetooth Class Class II
Range up to 10 m
Power
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 220 x 92 x 50 mm (8.66 in. x 3.63 in. x 1.97 in.)
Instrument and case 456 x 178 x 89 mm (18 in. x 7 in. x 3.5 in.)
Weight
Instrument only 590 gms (20.73 oz.), 775 gms (27.22 oz.) with boot
Instrument and case 1.75kg (3.86 lb)
Fuse Use only a 500 mA (FF) 1000 V 32 x 6 mm ceramic fuse of highbreaking capacity HBC 50 kA minimum. Glass fuses MUST NOT be fitted.
Safety Protection The instruments meet EN 61010-1 (1995) to 600 V phase to earth, Category IV. Refer to safety warnings supplied.
E.M.C. In accordance with IEC 61326 including amendment No.1
Temperature effects
Temperature coefficient <0.1&Omega per °C up to 1 G&Omega
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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