Megger MIT Series Insulation Resistance Testers

I. Series Overview

The Megger MIT Series is a benchmark product in the global power testing field – the core insulation resistance testing product line of Megger (UK). This series covers a complete test voltage range from 250V to 15kV, capable of meeting various application needs from daily electrical installation maintenance to high-voltage power equipment diagnostic testing.

II. Product Classification Description

Megger divides the MIT/S1 Series into three clear tiers to facilitate user selection based on actual requirements:

Level Positioning Representative Models Core Features

Essentials Daily inspection, pass/fail testing MIT515/2, MIT1015 No storage function, economical and practical, suitable for frontline technicians

Advanced Complex diagnostics, data management MIT525/2, MIT1025/2, MIT1525/2 Built-in storage, Bluetooth connectivity, complete diagnostic modes

Expert Harsh substation environments, high precision S1-568/2, S1-1068/2, S1-1568/2 Superior noise rejection (up to 1000kV environment), remote operation

III. Core Technical Features

PI Predictor™ (Polarization Index Predictor) : Patented technology that predicts 10-minute PI values within 3-5 minutes, typically cutting test time in half

CAT IV Safety Rating : MIT1525 achieves CAT IV 1000V at altitudes below 3000m; other models are CAT IV 600V

Dual-Layer Enclosure Design : Outer layer of rugged rubber armor, inner layer of fire-retardant flameproof housing; achieves IP65 protection rating when closed

Dual Power Supply : Lithium-ion battery powered; can operate directly from AC mains when battery is depleted

Noise Suppression : Suppresses up to 3mA of interference noise, ensuring test stability in industrial environments

Automatic Discharge Function : Automatically releases residual charge from the equipment under test after testing, ensuring operator safety

IV. Complete MIT Series Model List

MIT200 Series

Model Voltage Range Max Measurement Positioning

MIT200 250V, 500V 1000MΩ Entry Level

MIT210 250V, 500V 1000MΩ Basic

MIT220 250V, 500V 1000MΩ Standard

MIT230 250V, 500V, 1000V 1000MΩ Enhanced

MIT300 Series

Model Voltage Range Max Measurement Positioning

MIT300 250V, 500V 999MΩ Entry Level

MIT310 250V, 500V, 1000V 999MΩ Standard

MIT310A 250V, 500V, 1000V 999MΩ Analog Pointer Type

MIT320 250V, 500V, 1000V 999MΩ Backlit + Alarm Type

MIT330 250V, 500V, 1000V 999MΩ Enhanced

MIT400 Series (mk2)

Model Voltage Range Max Measurement Special Features

MIT400/2 250V, 500V, 1000V 200GΩ Basic

MIT410/2 50-1000V 200GΩ PI/DAR

MIT420/2 10-1000V 200GΩ Low voltage start

MIT430/2 50-1000V 200GΩ Bluetooth download

MIT481 50-1000V 100GΩ High continuity current

MIT500/S1 Series

Model Voltage Range Max Measurement Level Data Storage

MIT515/2 5kV 10TΩ Essentials No

MIT525/2 5kV 10TΩ Advanced Yes

MIT1015 10kV - Essentials No

MIT1025/2 10kV 20TΩ Advanced Yes

MIT1525/2 15kV 30TΩ Advanced Yes

MIT2500 2.5kV 200GΩ Medium Voltage Type Yes

S1-568/2 5kV - Expert Yes

S1-1068/2 10kV - Expert Yes

S1-1568/2 15kV - Expert Yes