Megger MTO210 Transformer Ohmmeter

Overview

The Megger MTO210 is a rugged, dual-channel transformer ohmmeter designed to measure the DC winding resistance of single- and three-phase power transformers. Delivering up to 10 A of test current, it saturates the core quickly and returns stable, repeatable readings with ±0.25% accuracy and up to six-digit resolution.

With two channels for simultaneous winding measurement, the MTO210 lets engineers compare windings and verify on-load tap-changer operation efficiently. It is well suited to verifying factory readings, supporting scheduled maintenance programmes and detecting winding or connection defects in substations and transformer workshops.

Key Features

• Test current up to 10 A for fast core saturation and stable readings
• Dual-channel design for simultaneous measurement of two windings
• Wide resistance range of 1 mΩ to 2000 Ω
• High accuracy of ±0.25% of reading with up to 6-digit resolution
• Test voltage up to 50 V DC
• Large high-contrast alphanumeric LCD displays
• Ideal for on-load tap-changer evaluation on single- and three-phase transformers

Applications

• Winding resistance measurement on power transformers
• Verifying factory readings and commissioning tests
• On-load tap-changer function checks
• Preventive maintenance and defect detection in substations and workshops

What’s in the Box

• Megger MTO210 Transformer Ohmmeter
• Test leads with Kelvin clamps
• Mains power lead
• Ground lead
• User guide

Why Buy from MME in UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) is a trusted supplier of Megger test and measurement equipment across the UAE and wider Middle East. We offer genuine products, competitive pricing, and knowledgeable local support to help you choose the right instrument for your application. For full technical details, download the datasheet below.