Keeping Current with NFPA 70E 2012

As many of you know, NFPA 70E 2012 was released in early September. One of the new additions to the 2012 revision are arc flash equations for DC systems.

In order to calculate DC arc flash hazards, we are developing DC rectifiers and DC/AC inverters for EasyPower. This will allow us to model both rectifiers for loads, as well as photo voltaic (PV) generation. Our engineers have performed extensive computer simulations based on actual field data to develop the models, resulting in a 78-page internal document, verifying how inverters and rectifiers act to DC and AC faults.

We feel this is a critical step for ensuring our customers get an accurate model. We are also developing a complete DC symbol set which includes conductors, batteries, DC motors and generators, and PV models. Along with the inverter, we are developing an adjustable frequency drive (AFD) model.

NFPA 70E 2012 also has new arc flash labeling requirements. EasyPower labels have always included the display information that NFPA 70E 2012 Standard now requires.

While we haven’t finalized a release date yet, be on the lookout for EasyPower V9.04 in early Q1 2012. We’ll keep you updated, as it gets close, here on the blog.

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