Arc Flash Analysis Report

[tshea]

I'm looking for a (free) template that I can modify for an Arc Flash Analysis Report. I have searched and also googles for one but come up empty.
The Arc Flash Analysis is done. I have all the numbers for the customer. I want to dress up the report and give them some more information--specifically what the different levels of PPE are and what each consists of for the workers. Basically it would be regurgitation of the Tables in NFPA 70e.
Any and all help is appreciated.
Thansk!

 

[zog]

I'm looking for a (free) template that I can modify for an Arc Flash Analysis Report. I have searched and also googles for one but come up empty.
The Arc Flash Analysis is done. I have all the numbers for the customer. I want to dress up the report and give them some more information--specifically what the different levels of PPE are and what each consists of for the workers. Basically it would be regurgitation of the Tables in NFPA 70e.
Any and all help is appreciated.
Thansk!

Spitting out labels using the tables is hardly an arc flash analysis. I hope you at least recorded all of the available fault currents and clearing times at each point in thier system to add to the label. What software did you use?

 

[tshea]

The software I use for calculation is EDR http://www.edreference.com/

The easiset way to do the calculation here is to get the AIC from the poco. This is what they guarantee at the secondary of their transformer.

Anyone can print labels. I include a one-line drawing of the electrical system(s) for the customer.

I include an excel table referencing all the available fault currents and clearing times, what level of ppe is needed, FPB, and some other info.

This is a small job so the final report is only 3 pages. I would like to educate teh customer on PPE, FPB and other info that may r may not be useful to them, primarily so thay can say to their insurance company--"Look, we did what you asked."

Now, whether they in fact put into practice what they just learned is another thread altogether!!

 

[zog]

AIC is not the same as available fault current. It does not look like this ER (Which I have never head of) is capable of doing arc flash calulations. What exactly are you doing here?

 

[jim dungar]

This is what they guarantee at the secondary of their transformer.

I have never had any POCO guarantee available fault currents. Although they regularly provide a worse case, or not to exceed, (some call it a design) value.

I would not trust the results of an arc flash analysis that considered only a single/maximum level of available fault current.

 

[jghrist]

If all you need is a nice looking table for the results, Excel has many built-in table formats. You can also adapt many Microsoft pre-designed templates by using the File|New command in Excel.

I agree with zog that the software you referenced does not seem to do arc flash calculations. How are you calculating the incident energy and boundaries?

 

[tshea]

You guys are brutal. All I asked for was a (free) template to dress up the results of the analysis.
If I asked "How do you do..." I would expect to be castrated here but for asking for a form...mmmmm.

Jim, We-Energies "guarantees" not to exceed the fault current. I find it almost unbelievable also.

I'm aware of Excel and Word, etc. But WHY re-invent the wheel?

Thanks everyone for your time to reply to my post!

 

[ControlFreak]

I'm surprised that you only have the "numbers." The last time I used SKM it would print out a table of all the buses and the required PPE level anyways, and put that data onto a label for printing if I so desired.

It just sounds abnormal and unnecessary.

 

[steve66]

You guys are brutal. All I asked for was a (free) template to dress up the results of the analysis.
If I asked "How do you do..." I would expect to be castrated here but for asking for a form...mmmmm.

Jim, We-Energies "guarantees" not to exceed the fault current. I find it almost unbelievable also.

I'm aware of Excel and Word, etc. But WHY re-invent the wheel?

Thanks everyone for your time to reply to my post!

Trying to be a little less brutal...but, I think Jim & Zog's point is that the highest arc flash energy doesn't always happen at the highest fault current. Lower fault currents can cause longer trip times, which can mean higher flash energy.

If you weren't aware of that, you need to do some more research at the very least. Arc flash studies can be very complex.

 

[jim dungar]

Jim, We-Energies "guarantees" not to exceed the fault current.

This is specifically my point. WE Energies provides a guaranteed not to exceed 'design' fault current value. They accomplish this by using an infinite bus source to feed an unrealistically low transformer impedance, then they make sure that all of the transformers they purchase exceed that minimum %Z.

WE Energies also warns you not to use their design value fault current for any purpose other than equipment SCCR/AIC selection.

From We Energies recommending you perform multiple, at least three arc flash analyises (my emphasis):

We Energies recommend that you consider both the actual and maximum short circuit values when performing an Arc Flash Hazard evaluation. Since future short circuit values may increase or decrease from the actual value provided, we also recommend that short circuit values between the actual and maximum design along with values below the actual be considered. It should be recognized that in some instances, depending on clearing times, a calculation using a design maximum fault current level or the actual value provided may not provide the worst case arc flash condition. Rather a value in between or below these values may provide the worst case arc flash condition
We Energies recommend that you consider the maximum designed short circuit values when sizing your equipment.

 

[weressl]

You guys are brutal. All I asked for was a (free) template to dress up the results of the analysis.
If I asked "How do you do..." I would expect to be castrated here but for asking for a form...mmmmm.

Jim, We-Energies "guarantees" not to exceed the fault current. I find it almost unbelievable also.

I'm aware of Excel and Word, etc. But WHY re-invent the wheel?

Thanks everyone for your time to reply to my post!

You may want to consider that this forum acts in some fashion as a Guild of ancien. Not as much of a protectionist, but there are comments that tries to raise the professionalism of the participants to some level. It is not a conscious effort, but rather professional pride.

 

[charlie b]

I’ll be gentle, but I will not pull any punches. First, so as to give you the option of not reading the rest of this post, I will admit that I do not know the answer to your question. I do not know of a source that can provide a template for the report.

Now, on to my comments.

The Arc Flash Analysis is done.

No it is not.

I have all the numbers for the customer.

No you don’t.

I want to dress up the report and give them some more information--specifically what the different levels of PPE are and what each consists of for the workers.

Describing what PPE is, and what to wear at each level of PPE is one thing. Telling them which level applies to work on any particular panel within their building is another.

Basically it would be regurgitation of the Tables in NFPA 70e.

That table is not the result of an analysis of any particular customer’s installation. I almost wish that that table did not exist. I think it is more likely to create a dangerous situation than to protect against a dangerous situation. That is because it is very limited in its applicability, and it is too easy not to notice that it is limited in its applicability.

Now to explain my earlier comments:
? The analysis is not “done,” because the software you are using is not capable of performing an arc flash analysis.
? You don’t “have the numbers,” for the same reason.
? You cannot know what level of PPE is required, in order to do live work on a particular panel, unless you can confirm that the assumptions of the NFPA 70e table are applicable, and that the intended task is within the parameters of that table, or unless you have a formal arc flash analysis performed.
? To perform an arc flash analysis, you need to know the settings of all overcurrent devices between the panel under review and the utility source, and you need to know the parameters (size, length) of all intervening cables. You also need to have the analysis performed by a licensed professional engineer.