What are the main types of power
is Electrical Pollution ?
are the main problems caused by Electrical Pollution?
can be done about Electrical Pollution?
is a StediWatt Transient Voltage Surge Suppressor (TVSS)?
does the StediWatt TVSS prevent equipment damage?
is Electrical Pollution the most costly to ignore
and the least costly to eliminate?
is the StediWatt TVSS System so innovative?
do you mean by non-degrading TVSS?
many surge suppressors do I need in my building?
does a cascading grid of protection really mean?
does StediWatt TVSS provide circuit isolation
I have panel mounted StediWatt surge protection, do I still
need plug-in protection?
are Blackouts and Brownouts?
are the solutions for Blackouts and Brownouts?
I need TVSS if I have a UPS on my power system?
a transformer provide transient protection?
about other types of power conditioners, constant voltage
transformers, series filters, etc.
is a series connected surge suppressor?
What are the main types of power quality problems?
are three main types of power quality problems: Blackouts,
Brownouts and Electrical Pollution.
What is Electrical Pollution?
Pollution consists of the external transients and surges
caused by lightning, power grid switching, brownouts, blackouts
and large load switching, as well as the internally produced
transients and electrical noise caused by motor controls,
electronic equipment, load switching and other transient generators.
What are the main problems caused by Electrical Pollution?
main problems are catastrophic failures and long term degradation
of sensitive electronic and electrical equipment and machinery;
lost data and malfunctions of communications and IT equipment
as well as downtime and frustration.
What can be done about Electrical Pollution?
StediWatt Transient Voltage Surge Suppressors (TVSS) in your
facility is the first and best line of defense against the
problems caused by Electrical Pollution
What is a StediWatt Transient Voltage Surge Suppressor (TVSS)?
A. A StediWatt
TVSS is a passive electronic module which connects directly
to the power lines, circuits and outlets of your building.
When it senses that a transient voltage exceeds the normal
operating level, it instantly turns on, suppressing
the surge by safely diverting it to earth ground. It quickly
turns off when the transient is gone and allows
the normal power to continue flowing to your equipment.
How does the StediWatt TVSS prevent equipment damage?
is caused by high voltage transients containing large amounts
of energy that breakdown the input semiconductors and insulation
of electronic equipment. By diverting this transient energy
before it gets in the building distribution system, the TVSS
protects downstream equipment from damage. The same damaging
affects applies to motors, lighting, HVAC and automation equipment.
Why is Electrical Pollution the most costly to
ignore and the least costly to eliminate?
Electrical Pollution will eventually cost you
thousands of dollars in repair of catastrophic failures, deteriorated
equipment, lost production, wasted man-hours, corrupted computer
data, downtime, etc. However, installing a relatively low
cost StediWatt surge suppression system will eliminate these
problems and protect your assets. It is much less costly than
UPS systems, standby generators and other types of power conditioning
Why is the StediWatt TVSS System so innovative?
has a unique SE Single Element Technology, which uses individual
large suppression elements capable of safely handling high
levels of surge current. This insures that the suppressor
will never degrade, even after multiple strikes. Many other
surge protectors are constructed using small multi-elements
in parallel to obtain a high surge rating. These small elements
are prone in degradation due to unequal sharing of the high
transient currents leaving the user only partially protected.
What do you mean by non-degrading TVSS?
TVSS means that the unit will not loose its ability to handle
high peak currents with time or use. StediWatt uses large,
40 and 53 mm diameter MOVs in all its 'Non-degrading
Single Element Technology TVSS. This means that surge
suppressor retains its full surge current capability for its
lifetime with no reduction in its capability. Many other manufacturers
use a large number of smaller MOVs in parallel to build
up their ratings. This type of multi-element
construction looses some of its ability to handle surges each
time it operates. The StediWatt SurgShield rated at
45,000 amps per mode all the way up to the BermudaTriangle
rated at 320,000 amps per mode maintain their full ratings
for their lifetime.
How many surge suppressors do I need in my building?
StediWatt TVSS System works best when applied as recommended
by the IEEE Emerald Book, (Institute of Electrical and Electronics
Engineers). A high energy suppressor should be placed at the
service entrance to the building, a category C primary location.
This removes the high energy transients from the distribution
system. Then lower rated suppressors should be applied at
the category B secondary locations on the distribution power
panels for each critical load. This method of placing TVSS
modules creates a cascading grid of protection,
protecting each individual load from any residual external
transients as well as any internally generated transients.
What does a cascading grid of protection really
is a term for the placement of StediWatt TVSS modules at strategic
locations in a facility so that all the equipment is protected
from internally as well as externally generated transients.
The primary protector at the service entrance performs the
initial coarse suppression and then the secondary
protector at a sub-panel or on a low voltage circuit performs
a fine suppression, limiting the transient to
harmless levels. This cascading grid of multiple
suppression levels insures that there will be no equipment
How does StediWatt TVSS provide circuit isolation
connecting the TVSS modules at power panels in parallel with
all the loads connected at that point, they are able to block
transients coming from any direction and effectively provide
isolation of each load from the others connected
at that same point.
Q. If I have panel mounted StediWatt
surge protection, do I still need plug-in protection?
protection is for category A locations. A plug-in protector
alone without upstream panel protection at the category B
or C locations is ineffective. Plug-in protectors do not have
the surge current capacity to handle large transients by themselves.
When used downstream in a cascaded configuration, the can
provide good protection for very critical loads by clamping
at the local 120 volt level. They are also very beneficial
by stopping locally generated transients on the same circuit
from affecting nearby equipment.
What are Blackouts and Brownouts?
are complete losses of electrical power for a period of time.
They generally can be longer than a half cycle of the sine
wave up to hours. They can be caused by accidents which disrupt
the distribution system or by opened circuits that may be
caused by overloads or short circuits. Brownouts are reductions
in the amplitude of the power to the point where the lights
may dim and equipment may trip off by internal protective
devices. During Brownouts, many types of equipment may try
to draw more current, over heat and become damaged. Brownouts
may be caused intentionally reducing the distribution voltage
during periods of high demand or unintentionally by high overloads.
What are the solutions for Blackouts and Brownouts?
Blackout and Brownout problems can be eliminated by installing
various types of back-up power supplies. Uninterruptible Power
Supplies (UPS) contain batteries and can provide smooth instantaneous
carryover for a short period of time. Standby generators may
be started automatically if power is lost, but they take several
seconds to begin supplying power. Thus for long term operation
of critical loads, a combination of both UPS and generators
is often used.
Do I need TVSS if I have a UPS on my power system?
A UPS is NOT a TVSS! In fact it is necessary to provide TVSS
protection for the UPS so it will not be damaged if there
are transients present on the power system at the input to
the UPS. In addition, all of the other equipment in your facility
that is not connected to the UPS is unprotected and susceptible
to transients and must be protected.
Does a transformer provide transient protection?
A transformer does not stop high frequency transients like
lightning. A typical lightning transient is several hundred
micro-seconds in duration. This is so fast that it jumps thru
the inter-winding capacitance of the transformer and appears
on the secondary at about the same amplitude as before the
transformer. Thus it is necessary to provide protection on
the low voltage side as well as the high voltage side of the
transformer. For example, if the transient voltage is limited
to 800 volts peak on the 460 volt primary side, it will also
appear as 800 volts on the 120 volt secondary side. This 800
volts is too high for 120 volt equipment and must be limited
to 200-250 volts by another TVSS rated for operation on 120
What about other types of power conditioners, constant voltage
transformers, series filters, etc.
type of power conditioner has some specific purpose usually
associated with regulating the steady state voltage, but NOTHING
stops transients better at a lower cost compared to a StediWatt
What is a series connected surge suppressor?
TVSS units are parallel connected surge suppressors.
Series connected units are hooked up directly
in series with the load and thus must handle all the load
current. Because their size is dependent on the amount of
current drawn by the load they are generally more expensive
and usually only available in ratings of 20 to 30 amperes
for 120/240 single phase volt loads. They are typically only
suitable for category A applications because they have very
limited surge current capability. Thus they must be protected
by an upstream parallel connected suppressor at
a category B or C location. Many incorporate RFI/EMI filters
for high frequency noise filtering.
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