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NMX-J-098-ANCE: A Proposed Standard for Electrical Voltages in Mexico
NMX-J-098-ANCE is a proposed standard for electrical voltages in Mexico, issued by the Association of Standardization and Certification (ANCE), a non-profit organization that develops and certifies standards for electrical products and systems. The standard specifies the values of the normalized electrical voltages for different types of electrical systems, such as single-phase, three-phase, direct current, and alternating current. The standard also defines the terms and symbols used to describe the electrical voltages.
The standard aims to harmonize the electrical voltages in Mexico with the international standards and to facilitate the design, installation, operation, and maintenance of electrical systems and equipment. The standard also seeks to promote energy efficiency, safety, and quality of electrical services. The standard is currently under public consultation and is expected to be published in 2022.
The standard is based on the International Electrotechnical Commission (IEC) standards 60038 and 60076, which define the standard voltages for power supply systems and power transformers, respectively. The standard also considers the national regulations and practices of Mexico, such as the Official Mexican Standard NOM-001-SEDE-2012, which establishes the safety requirements for electrical installations.
The standard covers the following voltage ranges:
Extra-low voltage: up to 50 V AC or 120 V DC
Low voltage: from 50 V AC to 1000 V AC or from 120 V DC to 1500 V DC
Medium voltage: from 1 kV AC to 35 kV AC or from 1.5 kV DC to 52.5 kV DC
High voltage: from 35 kV AC to 230 kV AC or from 52.5 kV DC to 800 kV DC
Extra-high voltage: above 230 kV AC or above 800 kV DC
The standard also specifies the preferred values of the nominal voltages for each voltage range and type of system. For example, the preferred values of the nominal voltages for single-phase low-voltage systems are 127 V AC and 230 V AC. The preferred values of the nominal voltages for three-phase low-voltage systems are 220 V AC, 380 V AC, and 440 V AC.
The standard also provides guidance on how to select the appropriate voltage level for different applications and how to measure and verify the actual voltages in electrical systems. The standard also includes annexes with examples of typical electrical systems and their voltages in Mexico.The standard NMX-J-098-ANCE is expected to have several benefits for the electrical sector in Mexico, such as:
Reducing the diversity and complexity of electrical voltages and systems in the country, which can lead to lower costs, higher efficiency, and better compatibility of electrical equipment and devices.
Aligning the electrical voltages in Mexico with the international standards and practices, which can facilitate the trade and integration of electrical products and services with other countries and regions.
Improving the safety and quality of electrical services for consumers and users, by ensuring that the electrical voltages are adequate and stable for different applications and environments.
Supporting the development and innovation of new electrical technologies and solutions, by providing a clear and consistent framework for the design and testing of electrical systems and equipment.
The standard NMX-J-098-ANCE is part of a broader effort by ANCE to update and harmonize the electrical standards in Mexico, in accordance with the national and international regulations and trends. ANCE invites all the interested parties to participate in the public consultation process and to provide their feedback and suggestions on the proposed standard. 061ffe29dd