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Surge Protectors... why
youll wish you had one!
It is our sincere hope that you never have need of a surge protector.
However...that is unlikely. Electricity can be unpredictable.
You can protect yourself a bit by making sure that computers and
other sensitive equipment are not placed on the same power lines
with equipment like copiers and air conditioners.
You cant protect your equipment by just turning it off. Unplugging
it will protect it, but that could be inconvenient.
You can protect your equipment from the not so common lightning
strike or from the much more common surge, spike, sag or brownout
through the power lines or telco lines by installing a surge protector
that really protects.
A surge is a burst of more energy than you need that causes a sudden
change in voltage. Examples of this are refrigerators, dishwashers
or air conditioners going on and off, or a power station coming
on or going off line. Other situations which cause these fluctuations
can be storms, accidents involving power poles, falling trees, and
loose connections.
You often wont know that a voltage disturbance has occurred.
There isnt necessarily any sign. They happen quickly and quietly.
You probably wont see a flash of light or flickering bulbs.
Although you dont notice it...your equipment does. It will
either burn out completely all at once or absorb the shock until
one too many hits finally wears it down.
One of the biggest threats to your telephone system can come from
that little office refrigerator or refrigerated water cooler. They
regularly kick out more than a thousand volts when they shut off.
Computer Telephony recommends that you put surge suppressors on
the refrigerators.
All the little bitty pieces and parts on the miniaturized circuits
in most of our electronic equipment are pretty intolerant of voltage
ups and downs. Repeated surges can shorten their life by stressing
them out or actually destroying them.
Surge suppression shuts down (or clamps) power to your equipment
when voltage levels get too high.
How do you know which surge protection device to buy? Well, you
could ask us...or check the packaging for some of the following
information:
- Filtering EMI/RFI (electromagnetic
interference/radio frequency interference) is good. This type
of interference is not only annoying - it can harm electronic
equipment. This type of protector reduces the risk of microchip
failure in your equipment.
- A UL label is a must -- look
for the UL Standard 1449. The lower the clamping level -- the
better the protection.
- The higher the joules rating
-- the better -- 300+ is best.
- In looking at response time
-- a picosecond is better than a nanosecond -- suggest 50 picoseconds
or less.
- Maximum surge current (amps)
-- 10,000+ is best -- around 6500 amps is OK. Less than
that, think twice.
- Number of protected lines (hot
to neutral, hot to ground, neutral to ground) -- all three lines
are best. Guess theres no hot to trot line...
- Is there protection for RJ11
phone or fax lines? Or if connected to coaxial cable, protection
to stop occurrences on those lines?
- Last...but not least...does
the surge protector come with a connected equipment warranty?
Youll want that.
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