The M610C transformer ohmmeter is an easy-to-use, line-operated instrument specifically designed for safe and accurate field measurement of winding resistance in smaller transmission and distribution transformers.
It has single channel with a measurement range and accuracy suited to provide accurate information about the vast majority of power transformers, reactors and instrument transformers.
The test current can be manually set in 13 different ranges to fit transformers of various sizes.
The instrument is exceedingly simple to use, which minimises the need to train users. It has a single button to activate the test cycle. The instrument is also supplied with test leads fitted with Kelvin clamps that allow for a single, one-time connection to the unit under test.
The test leads are 14 m in length to allow for easy testing of pole mounted transformers.

Automatic Discharge

The discharge function is passive and thus also functions if there is an inadvertent loss of power or if the test or mains leads are accidentally pulled


When closed, the case is rated IP67, which means your instrument will always arrive safely to the testing location even in the harshest conditions.

Product Specification

Parameter M610C
Current Ranges 5A
Resistance Ranges 1m-20ohm
Environment 0°C to 50°C, 95% RH (non condensing)
Accuracy 1%
Open Voltage 6V
Test Leads 3m Kelvin Cable
Input Supply 220 VAC ± 10%
Features One
Weight 3.5kg


Easy user interface, speed and accuracy and price of the device were very important to us at the time of purchase.

— Mr.Ajodani

The support From Mehr Aris Company has made us buy 4 devices during the last 8 years.

— Mr.Norozy


Just stay tune for our latest Product. Now you can subscribe