The Low Voltage Directive, the Low Voltage Directive, is intended to identify and, if possible, eliminate hazards on all electrical devices before they are placed on the market. Low voltage directives concern all electrical devices within a certain volt range.
As it is known, in order to be able to trade in the European market, the products produced must have the CE mark and in order to put this mark on the product, the product must meet many criteria and pass a series of tests. The low voltage directive is for electrical products traded on the European market.
All companies producing electric vehicles are responsible for fulfilling the requirements of the directive if their products are within the voltage range specified in the directive. If the products meet the criteria set out in the low voltage regulation, they can add CE marking to their products and be marketed in Europe. Products that do not meet these requirements cannot receive CE marking in any way.
The sanction of CE marking on a product that does not comply with the directives and does not meet the requirements is heavy. This may range from the recall of the product from the market. Standardization studies have gained importance within the framework of harmonization with the EU.
In order to comply with the low voltage regulation, LVD testing companies must first ensure continuity in production activities that comply with the standard. The companies that fulfill this requirement will then prepare a technical dossier and are then expected to evaluate according to an appropriate standard. If there is no appropriate standard, they must make the necessary safety and product regulations.
Tests such as Insulation Test, High Voltage Test, Leakage Current Test, Earth Line Continuity Test are within the scope of LVD test and in LVD tests, TS EN 60335 Safety in Devices Used in Home and Similar Places, TS EN 60204 Safety in Electrical Equipment of Machines, TS EN 60950 Safety in Information Technology Devices, TS EN 60601 Safety standards are based on Electrical Medical Devices.
Electrical tests are performed on the products and then the test results are reported in terms of compliance with standards. Power measurement on products, Label inspection, Temperature test, Leakage current test, Electrical strength, Soil continuity, Insulation resistance, Humidification, Error conditions, Thermal resistance, Electrical resistance for inner conductors, Insulation gaps measurement, Ball pressure test, Capacity discharge test, Inspection and tests such as In-rushcurrent test, Mechanical tests, Component evaluation (transformer etc.), Electric field measurement, EN 50366 test, Balance test, GlowWire test, Flammability test are applied.
For new products manufactured with many parts, the fact that the majority of the parts found are CE marked does not imply that the new product can also be CE marked. The new product, which consists of many parts, must obtain the CE mark after successful testing by repeating the same tests.
Leakage Current Test
As the name suggests, the leakage current test is a test to determine in advance the situations that may cause serious danger by creating leakage current in the product and to eliminate these problems. Almost all electrically operated devices can generate leakage current within themselves. Although leaks with very low voltage are not as dangerous, leaks above 30 milliamps can cause a huge problem. Measures should be taken to prevent adverse situations that may occur here. Overcurrent protection is one of these measures. Another is RCD residual current protection relay and RCD residual current protection relay devices are at the top of the measures taken in terms of human safety.
Soil Continuity Test - Ground Test
Earthing structures to prevent the currents and voltages that may occur in case of a failure to endanger human life. Since earthing is one of the most effective methods to protect human life against electricity, measurement periods must be taken into consideration.
Soil continuity test on the product is carried out between PE (protection) conductor and accessible metal parts. The objective is to ensure the safety of the person or operator who uses the product in the event of any possible electrical leakage.
The main purpose of these tests is to protect human life at all times. In addition, the main idea is to protect other items against damages caused by electricity in case of any error. Every product installed has to pass various tests and whether it meets the safety standards, whether the selection of the elements, whether the assembly is made according to the manufacturer's data, whether there are damages affecting the safety, whether protection measures are taken against dangerous body currents, whether the cables, conductors and busbars are selected in accordance with their current carrying capacity. etc. issues should be checked.
According to the Regulation, Continuity Tests, Measurement of Insulation Resistance, Measurement of Earth Resistivity, Measurement of Grounding Resistance, Loop Impedance Measurement, RCD Test, PSC (short circuit current) and PFC (possible leakage current) tests are required.
Insulation Insulation Resistance Test
It is absolutely necessary to insulate the parts that use electrical energy products in the field of activity, which create and do not create tension. This is very important for the safety of life and property. This is especially important during operation of the devices.
Insulation must be made according to certain calculations. Otherwise, it poses a threat to life and property safety. While calculating the insulation resistance, which is one of them, a constant voltage is applied to the system to be measured, the current value in the system is measured and other operations are performed. These tests and measurements can be applied to other individual parts of the electrical equipment.
When we say insulating material, if we look at the electrical sense, in short, the electricity does not conduct matter comes to mind. However, although it is not well known, each substance has a certain resistance limit and it starts to transmit electricity after the vaccination. Dielectric Insulation Power Test (Breakdown) and High Voltage Insulation Test are among the insulation test methods.
High Voltage Test
In the case of electricity, high voltages and leakages create the most dangerous situations and threaten the safety of life and property. For this reason, all metal parts that can transfer electricity in electrical machines are insulated to a certain degree. The purpose of the high-voltage test is to perform the strength test of the material to which these isolated parts are isolated. The expert team performs many tests at various current ranges.
Among all these tests, the maximum test voltage applied must have a value of twice the declared supply voltage of the equipment or 1000 V. The highest test voltage applied shall be applied between the conductors of the power circuit and the protective bonding circuit parts for a period of approximately 1s. All components and devices not manufactured to withstand the test tension must be separated from the system during the test test.
If no destructive discharge occurs during these tests, the rules are observed. For more information, you can reach our expert team from our contact addresses and phone numbers and you can get answers to all your questions.
