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Megger ®
MIT400, MIT410, MIT420, MIT430, MIT440X
Insulation and Continuity Testers		  
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Megger

Characteristics:

  • AT IV 600 V applications
  • TRMS & DC Voltage measurement
  • Insulation testing up to 1000 V and 200 GΩ
  • Continuity testing at 200 mA or 20 mA down to 0.01 Ω
  • Pass/Fail limit alarms
  • Combined Analog and dual digital display
  • PI/DAR and Timer function
  • Test result storage (MIT420)
  • Bluetooth®wireless data transfer (MIT430)
 
  Product Description:  
 

 

 

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Meggers' new MIT400 series insulation testers are crugged ompact enough to allow for one-handed operation. They fully meet the requirements for Cat IV 600V applications, as defined by IEC61010, ensuring safe operation in all normal electrical, service, maintenance and utility applications.

All models in the MIT400 range offer time saving fast-response continuity testing and true RMS voltage measurement that provides accurate results even when the supply waveform is non-sinusoidal.

For general applications, Megger offers the new MIT400 tester in four versions.

The entry level MIT400 provides insulation testing at 250V, 500V and 1,000V, together with continuity testing and voltage measurement. The MIT410 adds 50V and 100 V insulation tests, as well as fully automatic measurement of dielectric absorption (DAR) and polarisation index (PI), while the MIT420 provides all of the facilities of the MIT420 plus internal storage for test results. Stored results can subsequently be recalled to the screen to allow easy recording.

The versatile MIT430, stores test results and also allows them to be transferred to a PC via a Bluetooth wireless connection. This arrangement completely eliminates the need for data cables, and also guarantees total electrical isolation between the instrument and the PC to which the data is being transferred.

The low-voltage model MIT40X has a selectable insulation test voltage from 10V up to 100V, and three further models which are optimized for use in telecommunications applications.

All Megger MIT400-series instruments have a removable rubber over-moulding for added resilience, and all are supplied in the form of a kit, complete with test leads and a strong moulded carrying case. For added convenience and ease of use, the instruments can be stored in the case without disconnecting the test leads.

All models also feature a useful dual digital display plus and analog arc. The display shows the main parameter being measured, while the smaller secondary display shows related parameter s- for example, insulation test voltage - as a digital value. Users therefore save valuable time by measuring two parameters with a single test.

  
 
 
  General Information:  
 
  • INSULATION TESTING
    • Test voltages - 250 V to 1000 V or 50 V to 1000 V insulation test voltages available
    • Test Lock - Locks insulation test on continuously.
    • Test voltage display - The actual test voltage is displayed on the smaller digital readout, with the insulation result on the larger digital display.
    • Analogue arc - The display also features an analogue arc to replicate the response of a moving coil display.
    • PI and DAR - Polarisation Index (PI) and Dielectric Absorption Ratio (DAR) functions
    • 200 GΩ - Insulation testing from 20 GΩ (MIT400) to 200 GΩ (MIT420 and MIT430).
    • Silicone leads - High quality flexible silicone test leads are comfortable to use and prevent measurement errors on higher GΩ ranges.
    • Test inhibit - prevents testing if voltages in excess of 50 V are detected when making insulation tests.
    • Insulation buzzer - The buzzer can be set to buzz if the insulation resistance is above a preset limit, set via the Setup menu.

  • CONTINUITY TESTING
    • Auto-test - Auto test on circuit contact enables real two handed operation without the need to press the test button.
    • 200mA or 20mA - Either 200 mA or 20 mA continuity test currents are available. 20 mA test current will considerably increase battery life.
    • Lead null - Lead resistance compensation (NULL) operates up to 9 Ω of resistance.
    • Buzzer - ON-OFF selected by simple push button.
    • Buzzer limit - Continuity buzzer limit alarm provides adjustment of the maximum resistance the continuity buzzer sounds. This is adjustable from 1 Ω to 20 Ω in 5 steps.

  • DISPLAY
    • The display offers a combination of analogue arc and a dual
      digital readout:

    • Analogue arc:
      • Full display width analogue arc.
      • Patented arc display shows essential charge and discharge characteristics not visible on a digital display.
      • Single pointer “needle” response is similar to a moving coil meter.
      • Logarithmic display for better low insulation value measurements.

    • Dual digital display:
      • Large main digital readout for good visibility of all main measurement results
      • Second digital display for additional data such as: Insulation test voltage.
        • Insulation leakage current.
        • Supply frequency
          (when measuring volts).
        • Test mode eg. PI, DAR or TI
          (Timed mode).

  • MIT40X - VARIABLE INSULATION VOLTAGE TESTER.
     The MIT40X provides a unique solution for awkward insulation voltage measurement applications. The MIT40X has a variable insulation test voltage from 10 V to 100 V in 1 V steps, selectable in the “Set-Up” menu. Once selected this can only be changed by re-configuring in the Setup menu.

      • Typical applications include:
        • Commercial avionics
        • Military land, marine and air communications
        • Manufacturing/production line goods
        • Electrostatic measurement
        • Component testing
        • Battery powered traction and lifting equipment


  • STORAGE & DOWNLOADING RESULTS

  • MIT420
     The MIT420 is capable of saving test results for recall to the screen. A simple storage structure allows for a test number and screen results to be recalled individually.
  • MIT430
     The MIT430 supports both test result storage and downloading. Test results can be stored in the instrument and subsequently downloaded to a computer with the Megger download manager software.
    Data transfer is by Bluetooth, with the MIT485 Bluetooth
  • MIT400 Series
    • Industrial Insulation Testers
      transmitter being enabled when the Download mode is selected on the instrument.
    • NOTE: The receiving PC needs to have Bluetooth capability
      or a USB port fitted a Bluetooth receiver. Class II (10m) is
      acceptable.

  • SAFETY
     Designed to be exceptionally safe to use, fast detecting circuitry prevents damage to the instruments if accidentally connected to live circuits or across phases. Specifically, all instruments:

  • Meet the international requirements of IEC1010-2 and EN61557.
  • Live circuit detection inhibits insulation testing on circuits over 50V.
  • Live circuit detection and test inhibit on continuity measurements.
  • Default display of live circuit voltage on all ranges.
  • Detection and inhibit functions even if the protection fuse has failed.
  • Suitable for use on CAT IV applications and supply voltages to 600 V. 600 V CAT IV
    All MIT400 instruments are designed to meet the safety requirements for use on CAT IV 600 V.
 
 
  Specifications:  
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  Industrial Service & Telco Special Applications
Insulation Voltage Range MIT400 MIT410 MIT420 MIT430 MIT440X
10-100 V variable
(2 G - 20G )		         √
50 V   √ √ √  
100 V   √ √ √  
250 V √ √ √ √  
500 V √ √ √ √  
1000 V √ √ √ √  
Upper Insulation resistance
Insulation Range 20 G 100 G 200 G 200 G 2-20 G
Leakage Current Display   √ √ √ √
INS Test Voltage Display √ √ √ √ √
Continuity
200mA
(0.01 to 200 ohms)		 √ √ √ √ √
Variable current limit. 200mA/20 mA √ √ √ √ √
Fast buzzer - selectable threshold √ √ √ √ √
K range to 999 K √ √ √ √  
Voltage
Live circuit warning
at 50 V		 √ √ √ √ √
Default voltmeter √ √ √ √ √
TRMS measurement
to 600 V		 √ √ √ √ √
Measurement Ranges
Frequency  -
40 Hz to 400 Hz		   √ √ √ √
Capacitance
(0.1 nF to 10 µF)		     √ √  
mV/transducer
(0.1 to 19.99 V)		 √ √ √ √ √
Features
Backlight √ √ √ √ √
Battery condition display √ √ √ √ √
Insulation Timed -
PI - DAR Tests		   √ √ √  
Test button plus
lock button		 √ √ √ √  
Limit alarm pass
band on INS		     √ √ √
Auto power down √ √ √ √  
Switch Probe (supplied)   √ √ √  
Calcert with product √ √ √ √  
Data Storage
Bluetooth Downloading       √  
Storage only     √    
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
Polarisation Index (PI):
10 min / 1minute ratio
Dielectric Absorption Ratio (DAR):
60 sec / 30 sec ratio
Continuity
Measurement:
0,01 Ω to 99,9 Ω (0 to 100 Ω 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 Ω to 9.99 Ω)
20mA (±1 mA )
(10.0 Ω to 99.9 Ω)
Zero offset at probe tips:
0,10 Ω typical
Lead resistance zeroing:
Up to 9,00Ω
Buzzer:
Variable limit 1 Ω, 2 Ω, 5 Ω, 10 Ω, 20Ω
Resistance
Measurement: 0,01 kΩ to 1000 kΩ (0 to 1 MΩ on analog scale)
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 Analogue 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 to 450 Hz)
Capacitance measurement: MIT420, MIT430
Measurement range:
100 pF to 10 μF
Accuracy:
± 5.0% ±2 digits
Distance by capacitance:
MIT420, MIT430
Arithmetic conversion from capacitance measurement on Default capacitance measurement: 50nF/m
Capacitance range:
40 nF/m to 60 nF/m Result storage
Capacity:
>1000 test results
Download:
Bluetooth wireless
Bluetooth Class: Class II
Range: up to 10 m
 
 
  Downloads:  
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  pdf_pic Downloads: General Specifications  
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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 + case:
456 x 178 x 89 mm
(18 in. x 7 in. x 3.5 in.)

Weight
Instrument only:
590 gms, 775 gms
with boot (20.73 oz.
(27.22 oz.)

Instrument plus case: 1.75kg (3.86 lb)

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 USED.

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% 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
 

© 2006-2007 Electro-Meters.com
Head office located at: 900 McKay Rd., Pickering, Ontario L1W 3X8 (click for map)
Sales: 905.428.3413 | Toll-Free: 800.617.3413 | Fax: 905.428.6086 | E-Mail: sales@electro-meters.com

All descriptions and specifications are subject to change without notice
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