Megger MIT485/2 Insulation Tester
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Megger MIT485/2
The Megger MIT485/2 is an advanced insulation tester designed for professionals who require precise and reliable measurements across a wide range of electrical applications. It is part of the MIT400 series, known for its robustness, accuracy, and user-friendly features, making it suitable for both field and laboratory use.
The new units come with a redesigned case, an improved back-stand, and a 6-cell battery compartment with a dedicated fuse access. All instruments are over-molded for enhanced protection and have an IP54 weatherproof rating.
Megger MIT485/2 Key Features
- Insulation testing up to 500 V and 100 GΩ range in a hand held instrument
- 3 wire connection for A, B and E (Tip, Ring and Earth) connection (New)
- Gated access to 500 V to prevent accidental damage (New)
- Rechargeable options for mains and car charging (New)
- Single range, faster continuity testing from 0.01 Ω to 1 MΩ (New)
- Differential measurement capability (New)
- Stabilized insulation test voltage (New)
- 600 V Trms AC and DC voltage measurement
- Test result storage and Bluetooth® downloading
- CAT IV 600 V and IP 54
specifications
Megger MIT485/2 Specifications
| Parameter | Specification |
| Insulation Test Voltage (Nominal) | 50 V, 100 V, 250 V, 500 V |
| Insulation Accuracy | 50 V: 10 GΩ ± 2% ± 2 digits ± 4.0% per GΩ |
| 100 V: 20 GΩ ± 2% ± 2 digits ± 2.0% per GΩ | |
| 250 V: 50 GΩ ± 2% ± 2 digits ± 0.8% per GΩ | |
| 500 V: 100 GΩ ± 2% ± 2 digits ± 0.4% per GΩ | |
| Service Error | 50V: ± 2.0% ± 2d, 100kΩ – 900kΩ ± 10.5% |
| 100V: ± 2.0% ± 2d, 100kΩ – 900kΩ ± 10.3% | |
| 250V: ± 2.0% ± 2d, 100kΩ – 900kΩ ± 10.3% | |
| 500V: ± 2.0% ± 2d, 100kΩ – 900kΩ ± 10.3% | |
| 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% ± 2 V |
| Test Current | 1 mA at min. pass value of insulation to a maximum of 2 mA max. |
| EN61557 Operating Range | 0.10 MΩ to 1.0 GΩ |
| Leakage Current | 10% ±3 digits |
| Timer Control | Countdown timer 60 second |
| Continuity Range | 0.01 Ω to 1.0 MΩ |
| Continuity Accuracy | ± 3% ± 2 digits (0 to 100 Ω) |
| ±5% ±2 digits (>100 Ω- 500 kΩ) | |
| (>500 kΩ – 1 MΩ unspecified) | |
| Service Error (Continuity) | ± 2.0%, 0.1Ω – 2Ω ± 6.8% |
| Open Circuit Voltage (Continuity) | 5 V ± 1 V |
| Test Current (Continuity) | 200 mA (–0 mA +20 mA) (0.01 Ω to 4 Ω) |
| Lead Resistance Nulling | Nulling up to 10 Ω |
| mA Range (DC) | 0.0mA – 500mA: +/-5%, +/-2 digits |
| mA Range (AC) | 0.0mA – 10.0mA: unspecified |
| 10.0mA – 500mA: +/-5%, +/-2 digits (15Hz – 400Hz, sinusoidal) | |
| Voltage Range (AC) | 10 mV to 600 V TRMS sinusoidal (15 Hz to 400 Hz) |
| Voltage Range (DC) | 10 mV to 600 V |
| Volt Range Accuracy (AC) | ± 2% ± 2 digits |
| Volt Range Accuracy (DC) | ± 2% ± 2 digits |
| Service Error (Voltage) | ± 2.0% ± 2d, 0V – 300Vac/dc ± 5.1% |
| Waveform Accuracy | Non-sinusoidal waveforms: ±3% ± 2 digits >100 mV to 600 V TRMS |
| ±8% ± 2 digits 10 mV to 100 mV TRMS | |
| Default Voltmeter Operation | Operates at > 25 volts ac or dc on any range except OFF |
| Frequency Measurement Range | 15 Hz – 400 Hz |
| Frequency Measurement Accuracy | ±0.5% ± 1 digit |
| Capacitance Range | 0.1 nF to 10 μF |
| Capacitance Accuracy | ± 5.0% ± 2 digits (1 nF-10 μF) |
| Cable Coefficient | 40nF/km to 70nF/km |
| Unit of measure: 50nF/km | |
| Result Storage Capacity | >1000 test results |
| Data Download | Bluetooth® wireless, Class II, Range up to 10 m |
| Power Supply | 6 x 1.5 V cells, 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 @ 500 V into 500 kΩ |
| Charger (Optional) | 12-15 V dc (accessory interface) |
| Dimensions | 228 mm x 108 mm x 63 mm (9.00 in x 4.25 in x 2.32 in) |
| Weight | 800 g (1.8 lb) |
| Weight (Instrument and Case) | 1.75 kg (3.86 lb) |
Datasheet
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