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Megger MIT420/2 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 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 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 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
- Insulation testing up to 1000 V and 200 GΩ range
- Stabilised insulation test voltage (New)
- Single range, faster continuity testing from 0.01 Ω to 1 MΩ (New)
- PASS/FAIL indication (New)
- Test voltage display (New)
- IP54
Megger MIT410/2 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 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 |
| 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 voltage
insulation |
-0% +2% ± 2V |
| Test current | 1 mA at min. pass value of
insulation to a maximum of 2 mA max |
| Leakage | 10% ±3 digits |
| Voltage | 3% ±3 digits ±0.5% of rated
voltage |
| Timer control | 60 second countdown timer |
| Note | Above specifications only apply
when high quality silicone leads are being used. |
| Continuity: | |
| Continuity measurement | 0.01 Ω to 999 kΩ (0 to 1000 kΩ
on 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) / Dual
polarity (configurable on setup). |
| Lead resistance | Null up to 9.00 Ω |
| Voltage: | |
| Voltage range | AC: 10 mV to 600 V TRMS
sinusoidal (15 Hz to 400 Hz) DC: 0 to 600 V |
| Volt range accuracy | AC: ±2% ±1 digit
DC: ±2% ±2 digit Service 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 measurement
range |
15 Hz – 400 Hz |
| Frequency measurement
accuracy |
±0.5% ± 1digit (100 Hz to
400 Hz unspecified) |
| Capacitance measurement:
MIT420/2, MIT430/2 |
|
| Capacitance measurement | 1 nF to 10 μF |
| Capacitance measurement
accuracy |
± 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® wireless
Bluetooth® Class II |
| Range | up to 10 m |
| Power supply | 6 x 1.5 V 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 ON /55 sec OFF @ 1000 V into 1 MΩ Charger (Optional): 12-15 V dc (accessory interface) |
| Dimensions | Instrument 228 mm x 108 mm x
63 mm (9.00 in x 4.25 in x 2.32 in) |
| Weight | 600 g (MIT400/2), (1.32 lb) |
| Weight (instrument and
case) |
1.75 kg (3.86 lb) |
| Fuse | Use only 1 x 500 mA (FF) 1000 V
32 x 6 mm ceramic fuse of high breaking capacity HBC 30 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. 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 above 1 GΩ |
| Environmental: | |
| Operating temperature
range and humidity |
-10 to +55 °C
90% RH at 40 °C max. |
| Storage temperature range | -25 to +70 °C |
| Calibration temperature | +20 °C |
| Maximum altitude | 2000 m |
| IP rating | IP 54 |
