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Already suited with all the capabilities of the MIT410/2 1004-735, Megger’s MIT420/2 1004-739 Insulation Tester has several additional features.
The MIT420/2 1004-739 has a variable range, enabling any intermediate voltage from 10V to 1000V in 1 v steps, ideal for awkward insulation voltage measurement applications. Even more, users can execute capacitance measurements from 0.1 nF to 10 µF and store up to 1000 test results with the on board memory.
No requirement for the added features? Click here to view the Megger MIT410/2 1004-735 Insulation Tester.
All quoted accuracies are at +20 °C. | |||
Insulation: | |||
Test voltage | |||
Nominal: MIT400/2 | 250 V, 500 V, 1000 V | ||
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 |
Service Error: BS EN 61557-2 (2007). | |||
50V, ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.5% | |||
100V, ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.3% | |||
250V, ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.3% | |||
500V, ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 10.3% | |||
1000V, ± 2.0% ± 2d, 100 kΩ - 900 kΩ ± 11.5% | |||
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 (not MIT400/2) | 10% ±3 digits | ||
Voltage | 3% ±3 digits ±0.5% of rated voltage | ||
Timer control (not MIT400/2) | 60 second countdown timer | ||
Note | Above specifications only apply when high quality silicone leads are being used. | ||
Continuity: | |||
Continuity measurement | 0.01 Ω to 1000 kΩ | ||
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 | 5 V ± 1 V | ||
Test current | 200 mA (–0 mA +20 mA) (0.01 Ω to 4 Ω) | ||
Polarity (not MIT400/2) | 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: (not MIT400/2) | |||
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 | ||
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 (MIT430/2 only) | 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 | ||
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