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The MIT220, part of the MIT200 series, is a compact, lightweight, and practical insulation and continuity tester designed for professionals. Here is a detailed overview of its features and capabilities:
Offers insulation resistance, continuity, and voltage measurement. The insulation test voltage is selectable between 250V and 500V, with a range of 10kΩ to 1000MΩ. The continuity test has a maximum current of 200mA and a range of 0.01Ω to 100Ω. Measures voltage from 25V to 600V AC/DC.
Includes a live circuit warning function. When connected to a circuit with voltage >25V, it displays a warning. If voltage exceeds 50V, it temporarily stops testing. It also features automatic discharge after insulation testing to prevent shocks.
Utilizes exclusive DART™ technology. The digital/analog display combines the clarity and accuracy of an LCD with the ability to evaluate a circuit's charge and discharge characteristics using an analog needle response.
Highly suitable for electrical contractors, home and industrial systems, and field maintenance departments. It is ideal for testing transformers, motors, generators, switchgear, panel manufacturers, home appliances, power tools, and fixed wiring systems.
| Parameter | Specification |
|---|---|
| Model | MIT220 |
| Series | MIT200 |
| Brand | Megger |
| Instrument Type | Portable insulation resistance tester (integrates continuity & AC/DC voltage measurement) |
| Insulation Resistance Testing | |
| Test Voltage Ranges | 250 V DC, 500 V DC |
| Insulation Resistance Range | 10 kΩ – 1000 MΩ |
| Accuracy (20°C ±5°C) |
- 10 MΩ – 100 MΩ: ±3% of reading ±2 digits - 100 MΩ – 1000 MΩ: ±5% of reading ±2 digits - Below 10 MΩ: ±10% of reading ±2 digits |
| Dielectric Absorption Ratio (DAR) | Supported (30 sec / 60 sec ratio calculation) |
| Polarization Index (PI) | Supported (1 min / 10 min ratio calculation) |
| Continuity Testing | |
| Continuity Test Current | Max. 200 mA (when measured resistance <10 Ω) |
| Continuity Resistance Range | 0.01 Ω – 100 Ω |
| Accuracy (20°C ±5°C) |
- 0.01 Ω – 10 Ω: ±3% of reading ±2 digits - 10 Ω – 100 Ω: ±5% of reading ±2 digits |
| Lead Compensation | 0 – 9.99 Ω (manual zero adjustment to eliminate lead resistance error) |
| Voltage Measurement | |
| Measured Voltage Type | AC/DC voltage |
| Voltage Range | 25 V – 600 V (AC: 50/60 Hz; DC: ripple ≤5%) |
| Accuracy | ±1% of reading ±1 digit |
| Live Circuit Protection |
- Alerts when connected to >25 V AC/DC (visual display) - Blocks insulation/continuity tests automatically if voltage >50 V AC/DC |
| Display & Operation | |
| Display Type | Dual-mode LCD (digital readout + analog pointer via DART™ technology) |
| Display Resolution | 0.01 Ω (continuity), 1 kΩ (insulation), 1 V (voltage) |
| Key Functions | Test start/stop, voltage range selection, continuity auto-test, data hold |
| Power Supply | |
| Battery Type | 6 x 1.5 V AA batteries (alkaline or NiMH rechargeable) |
| Battery Life | ~400 insulation tests (500 V, 1 MΩ load) |
| Auto Power-Off | Activates after 10 minutes of inactivity |
| Physical & Environmental | |
| Dimensions (W × H × D) | 195 mm × 98 mm × 40 mm |
| Weight | ~530 g (including batteries) |
| Protection Class | IP40 (per IEC 60529) |
| Safety Rating | CAT III 600 V (complies with IEC 61010-1) |
| Operating Temp | -10°C – +55°C |
| Storage Temp | -20°C – +60°C |
| Altitude | Up to 2000 m (operating); up to 10000 m (storage) |
The Megger Insulation Resistance Tester MIT200 series MIT220 provides the following unified feature set:
