O que é BAIXA TENSÃO?

Summary

In this video, Ricardo Serpa, an electrical technician, demystifies the concept of low voltage (baixa tensão) in electrical installations, based on Brazilian standard NBR 5410. He explains that low voltage refers to systems up to 1000 volts in alternating current (AC) and 1500 volts in direct current (DC). The standard applies to residential, commercial, and even mobile setups like trailers and motor-homes. Ricardo emphasizes the importance of following these guidelines for safety and proper installation. He wraps up by promoting his electrician installer course, inviting viewers to check out more details in the video description.

Takeaways

• 😀 The NBR 5410 is a Brazilian technical standard that regulates electrical installations for low voltage systems.
• 😀 Low voltage systems are defined as those up to 1000 volts in alternating current (AC) and up to 1500 volts in direct current (DC).
• 😀 Common voltages used in residential and commercial buildings are 127V, 220V, 380V, and 440V AC, which fall under low voltage.
• 😀 The NBR 5410 also applies to systems such as truck batteries and solar energy systems, which use DC voltage up to 1500V.
• 😀 Low voltage also includes the electrical systems used in construction sites, marinas, trailers, and motorhomes.
• 😀 In addition to the NBR 5410, there are other guidelines for electrical installations, particularly for battery systems and inverters.
• 😀 Electrical installations for trailers, food trucks, and similar mobile structures must comply with NBR 5410 for safety and regulation.
• 😀 Low voltage systems in Brazil operate on a frequency of 60 Hz, which is below the typical limits for high-voltage systems.
• 😀 Understanding the NBR 5410 is crucial for anyone working with low voltage electrical systems, as it outlines the best practices and safety standards.
• 😀 The video encourages viewers to explore an electrician's course, with more information provided in the video description.

Q & A

What is low voltage according to the script?

Low voltage refers to electrical systems with voltages up to 1,000 volts in alternating current (AC) or up to 1,500 volts in direct current (DC), as used in residential and commercial buildings.

What does NBR 5410 regulate?

NBR 5410 is a standard by the Brazilian Association of Technical Norms (ABNT) that provides guidelines for the installation of electrical systems for low voltage, ensuring safety and compliance in electrical works.

What is the maximum voltage for low voltage systems in alternating current?

The maximum voltage for low voltage systems in alternating current (AC) is 1,000 volts, which is the standard used in residential and commercial electrical installations.

What are the typical voltage levels used in residential and commercial buildings?

Typical voltage levels in residential and commercial buildings are 127V, 220V, 380V, and 440V in alternating current (AC), all falling within the low voltage range.

How does NBR 5410 apply to solar energy systems?

NBR 5410 applies to solar energy systems by regulating the electrical installations for low voltage, including systems that involve DC voltage, such as those found in solar panel installations or truck batteries.

What is the role of inverters in low voltage systems?

Inverters play a key role in converting direct current (DC) to alternating current (AC) within low voltage systems, such as in solar energy systems or battery-powered installations.

What are some specific electrical systems mentioned in the video that fall under low voltage?

Specific electrical systems under low voltage mentioned in the video include solar energy systems, truck batteries, trailers, motorhomes, and construction site installations.

What are the frequency limits for low voltage systems in Brazil?

In Brazil, the standard frequency for low voltage systems is 60 Hz, which is within the acceptable range for alternating current systems in residential and commercial settings.

How does NBR 5410 apply to temporary structures like trailers or motorhomes?

NBR 5410 applies to the electrical installations of temporary structures like trailers and motorhomes, ensuring that their electrical systems are safely installed and comply with low voltage regulations.

What additional information is offered at the end of the video?

At the end of the video, viewers are encouraged to check out a course on becoming an electrical installer, with additional information available in the video description.