1-21046-3

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1-21046-3 is a set of standards which defines the parameters that electrical and electronic machines and equipments must meet in their design and manufacture. This set of standards is usually referred to as the \'1-21046-3\' standard. It covers the safety requirements for certain categories of machines and equipment, including:

• Transformers
• Safety-related electrical equipment
• Industrial control systems
• Storage batteries
• Automation systems
• Telecommunications systems

The 1-21046-3 standard ensures electrical and electronic machines and equipment are safe for use in many industrial, commercial, and residential applications. It creates a minimum level of safety protection required to reduce the risk of personal injury or death from electric shock, fire, or explosion caused by these machines and equipment.

The 1-21046-3 standard is a consensus safety standard developed by UL (Underwriters Laboratories, Inc.), CSA (Canadian Standards Association) and IEC (International Electrotechnical Commission). It is intended to provide a uniform set of electrical and electronic safety requirements to ensure electrical products are judged on a consistent basis.

The 1-21046-3 standard is applicable to many different types of electrical and electronic machines and equipments, ranging from large industrial machinery to smaller home appliances. It includes requirements for the design, construction, installation, and testing of electrical and electronic machines and equipment. The standard also contains requirements for product labeling and instructions for use, as well as other safety-related matters.

The 1-21046-3 standard applies to a wide range of electrical and electronic machines and equipments. Examples include rechargeable batteries, large industrial machines used in manufacturing, office and household appliances, electronic consumer products, and specialized equipment used in critical safety areas such as medical or emergency services. The 1-21046-3 standard also covers specialized items such as telecommunications systems, industrial control systems, and elevator systems.

The 1-21046-3 standard has certain working principles that manufacturers must adhere to in order to achieve safety certification. The standard requires that all components be designed and constructed to meet specific criteria related to shallowness of the insulation barrier, insulation materials used, and power loads to which the component may be subjected. It requires that the rated voltage of each component should not exceed that specified by the manufacturer. The standard also includes clauses that specify temperature ratings and creepage distances, as well as requirements pertaining to the protection of electrical systems from overvoltage, overcurrent, and short circuits.

According to the standard, the power sources to which the 1-21046-3 applies shall be limited to those rated at 600V or less. The standard also includes requirements for sizing of overload protection devices and wiring conductors, and determines the installation procedures and overcurrent protection that must be used. Additionally, the 1-21046-3 specifies requirements for testing and verification, including the time period in which the tests must be performed.

The 1-21046-3 is an important set of standards that cover the safety of many different types of electrical and electronic machines and equipments. By adhering to the principles set forth by the 1-21046-3 standard, manufacturers can ensure that their products are safe and compliant with all applicable safety regulations. This, in turn, helps to reduce the risk of injury or death due to electrical shocks, fires, or explosions caused by faulty electrical and electronic components.

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