Condition: Refurbished

This Megger MTO210 has been seller refurbished and calibrated in April 2025, and is in excellent working condition. It is a dual-channel transformer ohmmeter suited for field and substation use.

Included in the sale:
• As pictured

The Megger MTO210 is a line-operated, field-portable instrument designed specifically to measure the DC resistance of all types of magnetic windings safely and accurately. It is widely used for testing transformers and rotating machine windings, as well as performing low-current resistance measurements on connections, contacts, and control circuits.

The dual set of potential inputs allows simultaneous measurement of the resistance of both primary and secondary windings of single- or three-phase transformers. This dual reading, dual injection characteristic speeds up measurements when testing low-voltage windings on large three-phase power transformers.

The MTO210 is particularly useful for testing the windings and contact resistance of tap changers with make-before-break contacts and voltage regulators, detecting pitted or misaligned contacts. An auto-shutdown safety feature ensures that any inadvertent disconnection of a test lead or loss of power will safely discharge the energy stored in the unit under test.

Measurement Range: 1 µΩ to 2000 Ω
Number of Channels: 2 (simultaneous dual-channel reading)
DC Test Current: Up to 10 A maximum
Measurement Accuracy: 0.25%
Demagnetization: Integrated demagnetization feature
Safety: Very fast auto safety discharge circuit
Tap Changer Testing: Tests operation of on-load tap changers
Portability: Field-portable, line-operated instrument
Applications: Power transformers, rotating machine windings, tap changers, voltage regulators, connections, contacts, control circuits

Megger MTO210 Datasheet (PDF): Download PDF

Megger MTO210 User Guide (PDF): Download PDF

Shipping & Returns Policy

Shipping Policy

• Processing Time: Orders are typically processed and dispatched within 1 business day.
• Shipping Methods: We offer Expedited Shipping to all destinations using UPS/DHL/Fedex/Royal Mail and other reputable carriers.
• Shipping Times: Mainland UK: 1-2 Business Days / Mainland Europe and USA: 2-3 Business Days / Rest of the World 5-7 Business Days.
• Shipping Costs: These are calculated at checkout based on the shipping method, destination and package dimensions.
• CUSTOMS AND TAXES: It is YOUR responsibility to liaise with customs in your country and ensure your package is cleared and any taxes are paid.
• Shipping Destinations: We ship worldwide.
• Tracking: Once your order is shipped, we will provide you with a tracking number via email.
• Insurance: All shipments are insured. In case of damage, please contact us via email within 48 hours of receiving the product with photographic evidence, please also ensure a report is logged with the delivery driver.

Returns Policy

• Return Period: In the event of an item being received which is 'not as specified', you can return your purchase within 14 days of delivery.
• Condition of Items: Items must be returned unused and in their original packaging.
• Return Method: All returns must be notified in writing to hello@ttinstruments.com, the email should accompany the order number, date and reason for return and must be within 14 days of delivery.
• Restocking Fees: A restocking fee of up-to 20% is applicable for items returned for any reason other than 'not as specified'.
• Refund Method: Refunds are processed to the original method of payment within 5 business days of receiving the return.
• Exchanges: We do not offer exchanges. It will either be a replacement or a refund.
• Return Shipping Costs: Return shipping costs will be borne by the customer unless the item is 'not as specified', in this case we will arrange for the return by way of a prepaid shipping label.