What is Thermography?
Thermography
is technology by which you can see the thermal patterns of your equipments,
material, buildings and trace the thermal abnormality of the object. With this
you can save your expensive equipments from premature wear out or damage and
reduce maintenance cost by taking timely actions. It works on infrared
radiation detection from your objects.Lately it has become very important to
monitor your electrical and electronic equipments so as to reduce its down time
and increase the quality and productivity of the same.
All
objects which are warmer than minus 273 degrees centigrade (absolute zero),
emit infrared heat radiation. Infrared radiation cannot be seen by the human
eye. Thermal imagers, however,
can convert this infrared radiation into electrical signals, and present them
as a thermal image. The heat radiation is thus made visible for the human eye.
Salient
features of Testo Thermal Imagers
·
Best
in class thermal sensitivity
·
Ease
of operation
·
Wide
temperature range
·
High
image quality
·
Fast
and comprehensive analysis
·
Upgradation
to higher resolution possible with SuperResolution technology
Most common applications for Thermal
Imagers in Electrical field
1. Regular
checks in electrical maintenance
Testo thermal imagers
allow an evaluation of the heat status of low, medium and high voltage systems.
Thermal images lead to early recognition of defective components, so that the
required preventive steps can be taken. This minimizes the risk of fire that
avoids costly production downtimes.
2. Thermography
in the inspection of switch cabinets
In
electrical installations or cables, increased temperatures are always an
indication of an overload, an imminent malfunction or an existing defect. The
technology of thermography is particularly useful in the maintenance of switch
cabinets, as the measurements can be carried out non-contact and at a safe
distance. Anomalies can therefore be detected and counter measures can be
implemented.
3.
Detection
and storage of measuring site – automatically
The SiteRecognition technology also supports
efficient and reliable inspection routing for lots of similar switch cabinets.
The thermal imager automatically detects the measuring location and stores the
measured thermal images in defined folders. Therefore the thermal images of the
switch cabinets can be analysed conveniently and safely on the PC.
4.
Maintenance
of electrical installations: conductors and connections
Different temperatures in conductors and connections
in electrical installations may be a sign of loose or corroded connections. As
shown in the image, heat propagation is also monitored in the cable duct and
bundled cables.
5.
Maintenance
of electrical installations: electrical components
In case of electrical components, heat distribution
within the individual components is also significant, as well as the
connections and access lines. Different temperatures within maintenance
indicate the operating status, but can also be indicative of a malfunction.
The image shows an overloaded electrical fuse. It
may be that this fuse is too small, or the electrical components are producing
excessive current.
6. Maintenance
of electrical installations: transformers
Depending
on the type of insulation, the connections, cores or insulation in components
of medium-voltage installations such as transformers can be inspected for
thermal irregularities.
7. Maintenance
of electrical installations: overhead power lines
The
electrical connection points and insulators for overhead power lines in
substations or the overhead power lines of high-voltage systems can be checked
for maintenance purposes. Typically, these locations are difficult to access.
Lots of locations can be inspected thermographically using a telephoto lens
with correspondingly high resolution, conveniently from the ground.
8. Maintenance
of electrical installations: control and regulation systems
Electrical
distribution systems are operated at low voltage and can be inspected quickly
and easily using thermography. These systems are normally maintained using
thermal imagers with a high detector resolution. The higher detector resolution
makes smaller details visible. Thus, even the smallest electrical components
can be analysed thermographically. Many more applications are possible in
design and development and so on.
Seeing
it is believing it so see the problem before the problem sees you. Call us for
a demonstration and finfd more applications for your self.
To
know more and have a demonstration write to us at info@testoindia.com or visit www.testo.com/en-IN.
