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etiquetas de arco eléctrico

Etiqueta AF en el desconectador de servicio y el ATS en el mismo gabinete

19 de enero de 2017

With the awareness of arc flash, many giant manufacturers do not manufacture the Service Disconnect and the Automatic Transfer Switch located in the same section or enclosure. However, this practice can be seen in the field for switchboards rated as high as 600 Amps. The dangerous part is the upstream of service disconnect is like a blind spot as the only protective device is the utility’s fuse on the primary side of the transformer and often result in high incident

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¿Incluir fecha en la etiqueta de arco eléctrico?

20 de diciembre de 2016

According to the 2015 Edition of NFPA 70E 130.5(2), The arc flash risk assessment “…shall be reviewed periodically, at intervals not to exceed 5 years, to account for changes in the electrical distribution system that could affect the results of the arc flash risk assessment.” According to 130.5(D) Equipment Labeling, the date is not listed as a requirement for including on the label. However, many believe the date is an important aspect of the label in order to keep track

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Etiquetas de arco eléctrico: categoría EPI

22 de noviembre de 2016

In the NFPA 70E-2015 Handbook, page 122, 130.5(D) states incident energy or PPE category shall be on the equipment arc flash label, but not both. Yet when reviewing Annex H in the NFPA 70E-2015 handbook, on page 279 it states “Arcflash PPE categories may be applicable when using incident energy method to perform an arc flash risk assessment. When performing an incident energy analysis, the arc flash labels created may include an arc flash category”. Am I missing something or

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Actualización de etiquetas de arco eléctrico: ¿cuántas veces?

14 de noviembre de 2016

NFPA 70E requires that an Arc Flash Risk Assessment be updated when a major modification or renovation takes place. It shall be reviewed periodically, at intervals not to exceed 5 years, to account for changes in the electrical distribution system that could affect the results of the arc flash risk assessment. Countries outside of the US that do not use NFPA 70E may have a similar label review/updating requirement. NFPA 70E further states that where the review of the arc

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Etiquetas de arco eléctrico RELT o ARM

25 de octubre de 2016

It always seems as if we are kicking the dead horse on arc flash labels but I was just interested in your opinion of how to label a piece of equipment which is fed from a circuit breaker with an Arc Flash Reduction Switch (ARMS) or Reduced Energy Let-thru (RELT) switch. We are currently performing a project with several new circuit breakers using the RELT switch. Install two labels on the equipment? One with ARMS and one without? To avoid

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