Megger MIT420/2

Megger MIT420/2 | Insulation Tester | 50 V, 100 V, 250 V, 500 V and 1000 V + PI, DAR + VAR (New) and result storage

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The Megger MIT420/2 Insulation Tester is a robust, CAT IV 600 V rated device designed for precise insulation and continuity testing. With adjustable test voltages, true RMS measurements, and an IP54 rating, it ensures reliable performance in various environments, making it ideal for professionals in electrical testing across multiple sectors.

 

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Megger MIT420/2 Insulation Tester Overview

The Megger MIT420/2 Insulation Tester is an advanced tool specifically designed for professionals involved in electrical testing across various sectors including power utilities, telecommunications, automotive, and industrial applications. This insulation and continuity tester is ideally suited for electricians and maintenance engineers seeking reliable and precise measurements. With the ability to test insulation up to 1000 V and a maximum resistance measurement of 200 GΩ, it meets diverse testing requirements across multiple environments.

Key Features

Exceptional Safety Ratings

The Megger MIT420/2 is rated CAT IV 600 V, ensuring maximum safety when working at elevated voltage levels. This rating complies with stringent safety standards, making it a trusted choice for professionals.

Adjustable Test Voltages

With the flexibility to select test voltages ranging from 250 V to 1000 V, or 50 V to 1000 V, users can customise the tester to suit their specific testing conditions. This adaptability simplifies the testing of various insulation materials in both commercial and domestic settings.

Comprehensive Dual Display Readout

The dual digital display readout provides real-time access to critical testing information. It can simultaneously present insulation resistance in megohms (MΩ) alongside the test voltage or leakage current, enhancing user efficiency.

Advanced Measurement Capabilities

The MIT420/2 excels with an impressive measurement range of 20 GΩ to 200 GΩ, reassuring users of the tester’s capability to handle extensive measurements, including high insulation scenarios. This feature confirms its positioning as one of the highest insulation test range instruments available in the market.

Continuous Testing Options

The tester offers users a choice between 20 mA or 200 mA continuity testing, optimising battery life based on user preferences. Moreover, the continuity auto-test capability promotes a more ergonomic two-handed operation without needing to press a test button.

Automated Diagnostics

With built-in automatic Polarization Index (PI) and Dielectric Absorption Ratio (DAR) testing functionalities, users can swiftly conduct crucial diagnostic tests that are integral to assessing insulation integrity.

True RMS Voltage Measurement

Accuracy is guaranteed with true RMS voltage measurement, allowing for precise readings even on noisy electrical lines. This feature is essential for reliable evaluations in complex electrical installations.

User-Friendly Design

The Megger MIT420/2 includes an auto-ranging voltage measurement capability which adjusts between millivolts to 600 V AC or DC automatically, removing the hassle of manual adjustments. It features live circuit warnings that indicate when contact with a live circuit is detected, and a fuse warning system to alert users to fuse failures without the need for manual checks.

Durability and Protection

Constructed with an IP54 rating, the Megger MIT420/2 is protected against dust and splashes, making it suitable for use in various environments, including outdoor settings.

Conclusion

For professionals seeking a reliable and feature-rich insulation tester, the Megger MIT420/2 stands out as an exceptional choice. With its robust safety features, extensive measurement capabilities, and user-centric design, it enhances efficiency and accuracy in electrical testing, ensuring that users can perform their responsibilities effectively with confidence. Invest in the Megger MIT420/2 and elevate your testing capabilities today.

Specifications

*ALL QUOTED ACCURACIES ARE AT +20 °C
TEST VOLTAGE(MIT410/2, 420/2,430/2) 50 V, 100 V, 250 V, 500 V, 1000 V
Insulation accuracy 50 Volts. 10 GΩ ± 2% ± 2 digits ± 4.0% per GΩ100 Volts. 20 GΩ ± 2% ± 2 digits ± 2.0% per GΩ250 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
Display range Analogue: 1 GΩ full scale
Resolution 0.1 kΩ
Short circuit/charge current 2 mA +0% -50% to EN 61557-2(2007)
Open circuit voltageinsulation -0% +2% ± 2V
Test current 1 mA at min. pass value ofinsulation to a maximum of 2 mAmax
Leakage 10% ±3 digits
Voltage 3% ±3 digits ±0.5% of ratedvoltage
Timer control 60 second countdown timer
Note Above specifications only applywhen high quality silicone leadsare being used.
Continuity:
Continuity measurement 0.01 Ω to 999 kΩ (0 to 1000 kΩon analogue scale)
Continuity accuracy ± 3% ± 2 digits (0 to 100 Ω )±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 Open circuit voltage 5 V ± 1 V
Test current 200 mA (–0 mA +20 mA)(0.01 Ω to 4 Ω)
Polarity Single polarity (Default) / Dualpolarity (configurable on setup).
Lead resistance Null up to 9.00 Ω
Voltage:
Voltage range AC: 10 mV to 600 V TRMSsinusoidal (15 Hz to 400 Hz)DC: 0 to 600 V
Volt range accuracy AC: ±2% ±1 digitDC: ±2% ±2 digitService Error: BS EN 61557-1

(2007) – ± 2.0% ± 2d,

0 V – 300 V AC/DC ± 5.1%
Waveform Unspecified range:0 – 10 mV (15 to 400 Hz)For non-sinusoidal waveforms

additional specifications apply

Non-sinusoidal waveforms:

±3% ± 2 digits >100 mV to

600 V TRMS

±8% ± 2 digits 10 mV to 100 mV

TRMS
Frequency:
Frequency measurementrange 15 Hz – 400 Hz
Frequency measurementaccuracy ±0.5% ± 1digit (100 Hz to400 Hz unspecified)
Capacitance measurement:MIT420/2, MIT430/2
Capacitance measurement 1 nF to 10 μF
Capacitance measurementaccuracy ± 5.0% ± 2 digits(0.1 nF – 1 nF unspecified)
Storage:Result storage (MIT420/2 and MIT430/2):
Storage capacity >1000 test results
Data download Bluetooth® wirelessBluetooth® Class II
Range up to 10 m
Power supply 6 x 1.5 V cellstype 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 dutycycle of 5 sec ON /55 sec OFF @1000 V into 1 MΩ

Charger (Optional): 12-15 V dc

(accessory interface)
Dimensions Instrument 228 mm x 108 mm x63 mm (9.00 in x 4.25 in x2.32 in)
Weight 600 g (MIT400/2), (1.32 lb)
Weight (instrument andcase) 1.75 kg (3.86 lb)
Fuse Use only 1 x 500 mA (FF) 1000 V32 x 6 mm ceramic fuse of highbreaking capacity HBC 30 kA

minimum. Glass fuses MUST NOT

be fitted.
Safety protection The instruments meetEN 61010-1 (1995) to 600 Vphase to earth, Category IV. Refer

to safety warnings supplied.

EMC In accordance with IEC 61326

including amendment No.1
Temperature co-efficient <0,1% per °C up to 1 GΩ<0,1% per °C per GΩ above1 GΩ
Environmental:
Operating temperaturerange and humidity -10 to +55 °C90% RH at 40 °C max.
Storage temperature range -25 to +70 °C
Calibration temperature +20 °C
Maximum altitude 2000 m
IP rating IP 54

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