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QUALITY, PERFORMANCE, INTEGRITY
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Third Edition
Are You Up To Speed?
Followed by: Seasonal Sizzle -
"Fourth of July by The Numbers" | June 2010 |
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CONGRATULATIONS Steve Conway
Argus Consulting, Blue Springs, MO -
winner of the $25.00 Olive Garden gift card.
Steve was the first to correctly complete the following sentence:
'The waveform utilized to determine the voltage protection rating (VPR) in the Third Edition is a 6 kV/3 kA combination wave.'
Answer can be found in the SSI Third Edition #9 Newsletter -
"Comparing the Test Results - Understanding the Rating Levels"
released 12-16-2009
( Link to newsletter archive) | |
We are truly blessed to live in a free nation...
one nation under God... indivisible... with liberty and justice... for all.
Be the first to correctly answer the
Third Edition challenge question below to
win a $25.00 Cold Stone Creamery gift card.
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Special Edition Featured Article:
Standard for Surge Protective Devices
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Throughout this series of featured articles, we have explored various portions of the ANSI/UL 1449-2006 (Third Edition) standard. Some of the areas covered include detail on such items as:
- Markings and Nomenclature,
- VPR Ratings,
- The differences between the Second and Third Editions of UL 1449,
- Test Program Sequence,
- A review of the Nominal Discharge Current (In) Rating and Testing,
- A review of the Abnormal Overvoltage Tests,
- Updates to the Standard.
We trust that these articles have been informative as well as useful.
To recap some of our previous discussions, we have looked closely at the various ratings required by UL 1449 Third Edition.
Some of the key considerations include the following:
- The Nominal Discharge Current (In) Ratings - The In Rating is derived for the Nominal Discharge Current Tests which are based on an 8/20 µs current waveform. During these tests, the current is impressed through the device at the specific values declared by the manufacturer. For example, a Type 1 device is tested with either 10 or 20 kA impressed through the device.
- The Limited Current Abnormal Overvoltage Test, the Intermediate Current Test and Short Circuit Current Tests in Third Edition are conducted using an abnormal overvoltage and available fault current rather than a specific current value impressed through the device.
- The VPR Rating is derived from the tests conducted at a 6 kV/3 kA combination wave.
The overall purpose of these tests is to ensure that when an SPD is subjected to normal conditions as well as to an abnormal overvoltage anomaly, regardless of whether the anomaly takes place with a low, medium or high available fault current, the device responds appropriately and does not create a fire or shock hazard.
Stay tuned!
Additional information will be provided as standard updates occur.
In the meantime, if you have any questions regarding
UL 1449 Third Edition, please feel free to contact us for assistance at 1-888-987-8877 or select the 'Live Chat' link below. |
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New Release...
...Beginning in July, look for MONTHLY newsletters!
Celebrate the beginning of summer
and the end of the school year!
Be the first to answer the following
question correctly and win a
$25.00 Cold Stone Creamery gift card:
"Effective April 19, 2010, Underwriters Laboratories has published a new release to the standard which includes an expansion of the SPD Types. This was done primarily to address and distinguish between requirements for discrete SPD components (e.g. MOVs, SADs, GDTs...) and ______________."
E-mail your answer to
your contact information today. Good luck!
(Contest excludes employees/distributors/resellers of SSI)
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Ask a power quality related question to be addressed in a future newsletter or click on 'Live Chat link' now to chat with one of our knowledgeable engineers!
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Seasonal Sizzle: | | |
July 4th Fun Facts... By The Numbers |
On July 4, 1776, the Declaration of Independence was approved by the Continental Congress, starting the 13 colonies on the road to freedom as a sovereign nation. As always, this most American of holidays will be marked by parades, fireworks and backyard barbecues across the country.
PATRIOTIC PLACES:
30 Number of places nationwide with "liberty" in their name. The most populous one is Liberty, Missouri (26,232). Iowa has more of these places than any other state: four (Libertyville, New Liberty, North Liberty and West Liberty).
- Eleven places have "independence" in their name. The most populous of these is Independence, Missouri, with 113,288 residents.
- Five places adopted the name "freedom." Freedom, California, with 6,000 residents, has the largest population among these.
- There is one place named "patriot" - Patriot, Indiana, with a population of 202.
- And what could be more fitting than spending the day in a place called "America"? There are five such places in the country, with the most populous being American Fork, Utah, with 21,941 residents.
BARBEQUE COOKOUT:
More than 66 million
Number of Americans who said they have taken part in a barbecue during the previous year. It's probably safe to assume a large number of these events took place on the Fourth. Although we do not have a fixed menu for the celebration of the Fourth, you can almost count on traditional favorites such as hamburgers and hot dogs, chicken, ribs, garden salads, potato salad, chips and watermelon. Following is a summary of where these foods come from:
- There's a 1-in-6 chance the beef on your backyard grill came from Texas. The Lone Star State is the leader in the production of cattle and calves.
- The chicken on your barbecue grill probably came from one of the top broiler-producing states: Georgia, Arkansas, Alabama, North Carolina and Mississippi.
- The lettuce in your salad or on your hamburger probably was grown in California, which accounts for nearly three-quarters of USA lettuce production.
- Fresh tomatoes in your salad most likely came from Florida or California, which, combined, produced more than two-thirds of U.S. tomatoes. The ketchup on your hamburger or hot dog probably came from California, which accounted for 95 percent of processed tomato production last year.
- As to potato salad or potato chips or fries, Idaho and Washington produces about one-half of the nation's spuds.
- For dessert, six states - California, Florida, Texas, Georgia, Arizona and Indiana - combined to produce about 80 percent of watermelons last year.
FIREWORKS:
The value of fireworks imported from China, representing the bulk of all U.S. fireworks imports ($135.6 million) in 2002. U.S. exports of fireworks, by comparison, amounted to $13.5 million, with Germany purchasing more than any other single country ($5.0 million).
STATE PARK LAKES & BEACHES:
66 million
Number of visits in a recent year to our national parks - a particularly scenic locale for a July 4th picnic. There were 766 million visits in a recent year to another popular picnic venue - state parks or recreation areas. Those in California (80 million), Ohio (59 million), New York (56 million), Washington (48 million) and Illinois (44 million) recorded the highest number of visits. You may or may not be able to picnic there, but a visit to a national historical site is a particularly fitting way to celebrate our nation's heritage. In a recent year, about 72 million people flocked to national historical sites and 24 million to national monuments. Compliments of: Chiff.com |
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ANSI/UL 1449-2006 Listed ANSI/UL 1449-2006 Listed UL 497A
(Third Edition) (Third Edition) UL 497B
UL 1283 Listed UL 1283 Listed
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