Megger MTO300 - Product Overview 300;330 A; Top Panel Controls; Figure 1: MTO300 Front Panel; Figure 2: MTO330 A Front Panel

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PRODUCT OVERVIEW 300/330A
The Megger Transformer Ohmmeter is a line-operated, field-portable instrument designed specifically to measure the
DC resistance of all types of magnetic windings safely and accurately.
Its predominant use is the measurement of the DC resistance of all types of transformer windings within the defined
range of resistance. It can also test rotating machine windings and perform low resistance measurements on
connections, contacts and control circuits.
It is recommended that the user becomes familiar with the MTO before making any connection to a transformer.
The instrument provides a 10A DC output, switched to both high side and low side windings in a safe, efficient
manner.
Top Panel Controls
Figure 1: MTO300 Front Panel
Figure 2: MTO330A Front Panel
www.megger.com
MTO3XXX-UG-EN Rev 1 Feb 2018
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Product overview 300/330A