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Our Company


ORTO, manufacturer of monitoring systems, control instruments and accessories for transformers, began its operation in Mexico City in 1971. Now, its Research and Development facilities, Manufacturing, Quality, Engineering and Sales offices are located in Cuernavaca, state of Morelos, a city 60 km south of Mexico – City.

For more than one generation, ORTO has gained a reputation as a reliable supplier. ORTO’s integral quality system is based upon a clear and well defined policy, philosophy and mission.

All the people in ORTO are responsible for the quality of the products, and this quality means the long lasting satisfaction of its customers.

ORTO’s mission is to protect transformers by detecting failures, or even anticipating them, constantly monitoring liquid temperature, liquid level and pressure or vacuum that exists in an electrical distribution or power transformer.

To do this, ORTO has conventional instruments, monitoring devices for diverse variables, such as temperature, current, oil level and pressure-vacuum, and its accessories such as pressure relief valves, oil drain valves, tap changers, sight glasses, feedthrough connections for current transformers, and other special equipment manufactured according to customer’s requests.

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ORTO DE MÉXICO has been rewarded withseveral national recognitions and certificates like:

  • National Technology Recognition
  • Innovation and Competitivity Recognition

[see more certificates and recognitions]

Engineering & Dev. Dept.


ORTO’s Engineering Department has a permanent goal to improve processes and products, and to design and develop customer’s requirements for new or special instruments and accessories. It keeps the technical information for manufacturing up to date. Engineering is also responsible for evaluating standards and specifications from our customers, Official Mexican Standards, and international standards which apply to our instruments and accessories, to verify that our products comply with any requirement from the standards. The Engineering Department is in charge of making specifications, drawings, and manufacturing plans with which our instruments are manufactured. The area of research and development carries out the design of new products including development activities in the fields of electronics and software.

New Generation of On-Line Transformer Monitors 
The electronics Monitors are feasibly-priced devices, designed for monitoring distribution, power, dry-type and wind farm transformers […] Read more

Special Applications
The real time monitoring systems manufactured by ORTO are flexible and can handle any type of sensor with an output of 4-20 mA or 0-10 Volts […] Read more

Geomagnetic Induced Current Sensor (GICS)
The Geomagnetic Induced Current Sensor measures the value of the quasi DC current circulating in the transformer windings. […] Read more

Quality Department


The Quality Assurance Control team is responsible for planning and executing techniques and activities so that ORTO’s manufacturing systems, as well as their suppliers’, meet the quality standards specified in its Quality System. When the manufacturing process is finished, Quality Control makes a Quality Certificate of the product. This certificate guarantees the customer that the instrument or accessory has been manufactured according to the applicable standards, as ISO 9001:2008 and its Mexican equivalent NMX-CC-9001-IMNC-2008.

ORTO DE MÉXICO has been rewarded withseveral national recognitions and certificates like:

  • National Technology Recognition
  • Innovation and Competitivity Recognition

[see more certificates and recognitions]


Orto de México relies on an Integral Quality Management which integrates four dimensions: Quality Management System, Environmental Management System, Social Liability anagement System and Safety Work Management System. This supports and strenghtens our strategic  usiness approach, our results and the care for our customers.

Manufacturing Department


The manufacturing processes in ORTO are desinged so that quality is controlled from the receiving of raw material to the packaging and shipment of the final product. All these processes are strictly regulated from the manufacturing of pieces and components to the final assembly of the product, by the manufacturing plans. These plans are based on modern systems of continuous improvement, ISO 9001:2008, and the experience of more than one generation in manufacturing.


We have a large customer base, and our customers are located in México, U.S.A., Canada, France […] Read more


The Technical Sales Department seeks to satisfy all of ORTO’s customers’ requests and needs through a constant and close communication with the Engineering and Manufacturing Departments. We have a large customer base, and our customers are located in México, U.S.A., Canada, France, Belgium, Colombia, Ecuador, Paraguay, Chile, Peru, Argentina, Dominican Republic, Guatemala, Nicaragua, Phillipines, Singapore, Indonesia and Korea. For any technical question, do not hesitate to contact us!



We’re located in the Cuernavaca, Morelos, México. If you have a question or just want to get to know us and our services, you’re welcome. Don’t hesitate to drop by to see us at work or fill in the form and we’ll be in touch soon!


Prol. José María Morelos # 702, Col. Ocotepec, Cuernavaca, Morelos
Tel.: (+52) (777) 382 1242 y 382 1077 , Fax 52 (777) 382 1078

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