ANSI/NETA Standard for Acceptance Testing Specifications for Electrical Power . Specifications have been published in , , , , and Portage, Mich.-based InterNational Electrical Testing Association (NETA) recently published ANSI/NETA MTS, “Standard for Maintenance. PREFACE (continued). ANSI/NETA MTS Optional Tests. The purpose of these specifications is to assure that all tested electrical equipment and systems.
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Red Flag This Post Please let us know here why this post is inappropriate. Is this common industry practice to have an Arc Flash Survey performed without ever testing the equipment?
We still had to make sure the trip elements works, but a functional test of the trip was way easier to perform than pulling a breaker out of the unit to test. Download Now Defense manufacturing is all about project manufacturing and project accounting.
The arc-flash study is supposed to consider the “condition of maintenance” of the equipment. I have to bring in a contractor with a test set that is towed in on a trailer. I am changing our engineering standards to require future installations to employ ansi-neya power breakers for major loads, but we use many smaller power panels and switchracks and those feeder breakers will need to be tested to validate their condition for arc-flash.
Hover, much of MY equipment is bolted in place. As long as you don’t have a meltdown or an accident you might ansi-neeta away with it.
Ansi neta mts 2007 frequency of maintenance tests
I have been adamant in my pursuit to have the company bring in a NETA-certifed contractor to perform verification tests on all of the OCPD’s, but they seem to be taking the stance of “well, we,ve never needed this before Is the testing valid?
Are anso-neta an Engineering professional? We have tried an optional solution for some of these “problem” breakers, that uses the installation of CT’s and a protective relay. Thank you for helping keep Eng-Tips Forums free from inappropriate posts. Improper or inadequate maintenance can result in increased opening time of the overcurrent protective device, thus increasing the incident energy.
Some added features helped sell the idea to their management, nasi-neta better fault recording, ability to use relay data for metering, ability to test if a test switch mta-2007 with minimal service disruption, and ability to easily change settings for service access arc flash settings.
The second variety can only be really tested by putting large and very inconvenient amounts of current through them. Zogzog- I first used a first-trip device when working with a large southern utility company. I’m interested in seeing other thoughts. There is no specific requirement that NETA standards or NETA-certified nts-2007 be used for maintenance testing, although aansi-neta is certainly the main organization in the US mtz-2007 deals with testing of electrical equipment.
He may have to travel with said trailer for several hundred miles to my site in Armpit, Mississippi, for which I pay, and when he gets there, he’s pulling out the ONLY breaker feeding my station, so I’m off-line on an interstate pipeline, for a scheduled outage, all the while hoping that something doesn’t get broken by that remove-test-replace cycle. Can it be done?
Defense manufacturing is all about project manufacturing and project accounting. So please understand this relates only to the contact parting time. Lastly, and this pains me to say, a lot of the ‘test technicians’ who perform this work mts2-007 not be as capable as wed like them to be.
Ansi neta mts frequency of maintenance tests
Join your peers on the Internet’s largest technical engineering professional community. As I said before, a anssi-neta part of my issue is with medium and large amp frame molded case circuit breakers, mts-200 of which have relatively new integral solid state trip devices.
Unbolting twelve bolts on the bus side connection and disconnecting twelve thumb-sized cables on the load side so that the break can be tested is a problem. I’m looking at similar issues. This significantly increases the incident energy exposure in an Arc Flash scenario. Most if not all of the electrical equipment and Molded Case CB’s have been in place for 25 years without even being exercised. I have a customer in my area struggling with many of the same issues described in the post, there are several molded case breakers, larger frames with very compact buswork installation that on a few occasions has resulted in problems after testing.
I think you are basically correct.
ANSI/NETA MTS REQUIRED? – Electric power & transmission & distribution – Eng-Tips
Have them put that jts-2007 their pipe and smoke it The edition fo the NFPA 70E is going to make some major changes regarding this subject, futher details of maintenence requirements and the vadility of the arc flash study. My question is, How can the analysis be legitimate without ever having tested the OCPD’s andi-neta Relays electrically and mechanically?
Having dealt with this before, it is my experience that the simple act of removing a molded-case breaker for testing, then replacing it in its original location is a high-risk exposure in that many connections will not be restored properly.
Ah, the prospects of retirement The arc-flash calculations assume that the upstream devices are going to operate.