Under normal conditions in an electrical installation, the electrical current causes heating. These heat losses, which occur as heat energy, are the result of complete functionality in terms of the components that make up the installation and this heating generally remains within safe limits. However, if the installation is not installed correctly, the connections are not complied with, or due to the characteristic of the electrical load passing through the installation or due to incorrect distribution between the phases, this heating may exceed the safe limits. This is a danger to the installation.
Thermographic inspection services provided by authorized inspection bodies are the studies carried out to investigate and detect these hazards. These studies are carried out on electrical wiring components. In the examinations carried out, if there are faulty and poor connections and undesirable contact points between the installation components, they are revealed. These points are also detected if there are load imbalances between the phases, if the installation component is subjected to overloads above its capacity and fault currents are present in the installation. Thanks to these studies, future risks and unexpected situations such as fire or electric shock are prevented.
Theoretically, all objects emit different values of thermal energy depending on the properties of the object. This thermal energy is in the invisible infrared range. This range is between microwave rays and red light. This energy can only be monitored by thermal imagers. These cameras also clearly reveal problems that are not visible to the normal eye but can have serious consequences.
This imaging system is based on invisible infrared (IR) energy (heat), and the overall structure of the image consists of colors and shapes that appear according to this heat energy. This imaging system is also used for security purposes. It is also used in night vision systems, heat-guided missiles and a number of military devices.
However, this imaging system is widely used in the electricity sector to detect problems caused by electricity. In any electrical installation, the heating that occurs during the transition of the electrical current is monitored by thermal imagers and if there is a problem, it is detected.
Cables, contact points, power transformers, capacitors and similar components which are under extreme load are monitored by thermal imager and any problems in the heated points are determined without any other electrical measurement.
The devices used during thermographic examination have a certain temperature range to generate the image. IR (infrared) emissions are detected at the detected temperature point. These IR (infrared) rays have different wavelengths and these devices display different images according to these temperature values. The cameras in these devices capture the temperature difference even at the lowest temperature and generate the image from this difference.
Thermographic inspection services are provided by accredited inspection bodies both in the low voltage range and in the high voltage range. However, the most commonly used area is the low voltage range. The most common situation is that loosened electrical connections produce resistance to the electrical current passing through them. In this case, a temperature begins to form at the connection point. This rise in temperature causes the compound to malfunction. This results in larger system failures and therefore significant costs. At one point, the system crashes.
In the field of high-voltage surveillance, thermal power cameras are mostly used for power transformers. High voltage connections must be checked in order to identify the problem and intervene correctly. In addition, high-voltage power lines and power elements are other measured power transformers.
Our company provides electrical installation measurement and inspection as well as thermographic inspection services. ASTM E1934 standard is taken into consideration in these inspection studies. The full name of this standard, which was updated in 2014, is as follows: standard guide for inspecting electrical and mechanical equipment with infrared thermography. This standard specifies the responsibilities of persons using electrical and mechanical systems, and persons to perform infrared thermographic examination.
Our employees also provide these services in accordance with the principles of the Electricity Indoor Facilities Regulation. The said regulation covers the principles for the installation and operation of the electrical internal installation.
Thermographic inspection services are provided by trained and experienced engineers. In this context, measurement, examination and thermographic examinations are performed and reported for the installation infrastructures of buildings.