Hipot and VLF: What's the Difference Between These Two Tests? Understanding the difference between Hipot and VLF is essential for anyone working with electrical testing on medium- and high-voltage cables. After all, choosing the wrong test can compromise the cable's lifespan — or even damage it...
The new NR10 2026 has changed the logic behind electrical safety in Brazil, and the PPE rule is one of the areas most affected. If you work with electrical design, maintenance, or facility management, now is the time to understand what changes before the compliance...
NBR 5419 Update: What Companies and Engineers Need to Know The NBR 5419 update introduces important changes to lightning protection design in Brazil. These updates directly affect electrical engineers, industrial companies, and maintenance managers responsible for the safety and reliability of electrical installations. Published by the Associação Brasileira...
Reliability in critical electrical systems is essential for data centers, IT environments, and mission-critical infrastructure. Yet many failures do not occur due to poor equipment, but because of invisible engineering mistakes that go unnoticed over time. Electrical studies, technical standards, and best practices are fundamental. However,...
Access our free online tool for risk analysis and management! Risk management analysis of structures due to lightning strikes is a complex topic, and many people end up making mistakes. The governing standard, ABNT NBR 5419:2015, presents a calculation methodology that is difficult to understand. This article...
Thermographic inspection, or simply thermography, is a type of predictive maintenance used to detect heating points in connections and components. Thermography is employed to identify areas with excessive heating, primarily caused by increased electrical resistance. By detecting these hot spots, corrective actions can be taken...
A properly designed and installed electrical grounding system is one of the fundamental requirements for the proper operation of an electrical system, especially regarding reliability and safety. The main functions of this system are: To ensure that the ground resistance has the lowest possible values, allowing...
NR 10 - Segurança em Instalações e Serviços em Eletricidade Portaria GM n.º 3.214, de 08 de junho de 1978 06/07/78 Alterações/Atualizações D.O.U. Portaria SSMT n.º 12, de 06 de junho de 1983 14/06/83 Portaria GM n.º 598, de 07 de dezembro de 2004 08/09/04 Portaria GM n.º 484, de...
Parte 1 - EQUIPAMENTOS INTRODUÇÃO Com o desenvolvimento industrial e tecnológico a energia elétrica foi ao longo do tempo tomando uma importância vital em nossa vida e, com isso, aumentando a complexidade das instalações elétricas. Hoje a encontramos em todas as áreas, em todo o tipo de...
Parte 3 INSTALAÇÕES ELÉTRICAS EM ATMOSFERAS EXPLOSIVAS (ÁREAS CLASSIFICADAS) As instalações elétricas de uma industria, quando situada em atmosferas potencialmente explosivas, podem vir a ser a fonte de ignição que ocasionará incêndios ou explosões, provocando danos irreparáveis ao sistema. Esta ignição pode ser conseqüência de um centelhamento...