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Tea staining of stainless steels is a phenomenon that occurs where
water with a significant chloride content is in regular contact with
the metal surface.
Sunshades are used extensively in Australia to prevent radiated heat from direct sunlight warming the surface of an enclosure body above ambient temperature. However there seems to be very little information quantifying the effect, and the difference in temperature that can be obtained. To examine the effect of sunshades more closely B&R conducted testing, the first phase is detailed in the attached.
Keeping internal equipment
operating at optimal
temperatures can be difficult to manage. Sometimes the internal
equipment needs to be cooled
and other times it needs to be
heated depending on a number
of considerations. Regardless,
the objective remains that the
equipment should be protected at
all temperatures. All applications
have various considerations
and solutions which combine to
create a complex decision-making
Victorian railways have
traditionally used single
skinned cabinets built to
VRIOGS (Victorian Rail Industry
Operator’s Group Specification)
for both metropolitan and
regional installations. With
the implementation of new
technologies in the rail industry,
heat rise within signalling cabinets
has become an issue due to the
more electronic nature of control
When conditions are humid or the
temperature in an environment
suddenly drops, the water held
in the air around us, cannot stay
suspended as a gas anymore
and must condense back into water. It does this on any cold
surfaces it can find including
car windows, grass, mirrors etc.
The temperature at which this
happens is called the DEW POINT
and the water that condenses
is known as condensation (or
dew). This same effect can
cause problems with electrical
equipment as condensation can
occur inside enclosures and on
sensitive equipment if they are
not suitably protected.