LVD low voltage tests and EMC electromagnetic compatibility tests must be done in accredited laboratories in a timely manner in order to pass electrical and electronic devices, equipment and systems without being installed at customs.

Electricity is a kind of energy that cannot be handled or seen but can be seen with the work done. Today, electrical energy is the most widely used type of energy. It is possible to convert electrical energy to all types of energy except nuclear energy. Electrical energy can be obtained from all other types of energy.

Electricity does not emerge without a current. The formation of current depends on the completion of a circuit. The circuit exits a power source and is completed when it returns to that power source.

Voltage is an energy that causes free electrons to move, and its unit is Volt. Voltage is measured with a device called voltmeter. The voltage between two points is called the potential difference. Electric current is the number of electrons per unit time, ie the amount of charge. The current unit is Ampere and the voltage is measured with the ampere meter.

Small voltages are voltages below 42 Volts. Voltages below 50 Volts are non-hazardous voltages. Alternating currents greater than 50 Volts and direct currents greater than 120 Volts fall into the dangerous voltage class. Low voltage is less than 1000 Volt. The hazard limit is 65 Volts. Stress above this value may result in fatal accidents. For people, voltage below 20 mA is not dangerous.

In general, short circuit, fault current and overvoltage are important issues for electrical devices and equipment. A short circuit is a conductor connection that is usually the result of a fault. The fault current is the short-circuit current or earth contact current that results from the insulation fault. Overvoltage is the voltage that occurs between the conductors or between the conductors and the earth and exceeds the permissible limit value. Usually this occurs for a short time.

According to the Regulation on Electrical Equipment (2014 / 35 / EU) designed by the Ministry of Science, Industry and Technology for Specific Voltage Limits, electrical and electronic devices to be sent to European Union countries must have CE marking. Low voltage tests (LVD tests) are required to put CE mark on the products. Products marked with the CE marking are manufactured in accordance with the relevant regulations and standards and have the right to free movement at customs without further inspection.