danger to users and consumers. By successfully completing the relevant tests, you ensure the safe operation of your electrical devices. Treo takes care of this for you and offers test programmes in accordance with EN 62368-1, EN 61010-1 and EN 60598-1, among others.
Insulation resistance tests are necessary to test the resistance of a device to climatic influences as well as its general insulation capabilities. This form of testing is repeated in several test series after each environmental exposure, providing a comprehensive picture of the electrical properties of your test object. Insulation resistance is a sensitive component in electronic devices and therefore an essential parameter in ensuring their safety.
Several thousand volts are applied during a high-voltage test. This serves to simulate the stress on the insulation resistance over the entire service life. To ensure the safety of your device during operation, we stress the longevity of your insulation. This means you can be sure that your product complies with IEC directives and is safe to use in the field.
Protective conductor resistance measurement (also known as RLO, R-Low or RPE measurement) is used to determine the base resistance of your test object. A reliable and continuous protective conductor influences the touch current and voltage. Very low limit values must be observed during the measurement and the low resistance of the PE conductor must be guaranteed.
If Y capacitors are used in the device design to increase EMC resistance, the leakage current may suffer as a result. For this reason, the equivalent leakage current and the protective conductor resistance are measured in electrical safety. Depending on the standard specification, the first of those must not exceed a value of a few milliamperes. The leakage current measurement ensures that this current cannot endanger people.
Some of the most important guidelines for electrical safety come from the International Electrotechnical Commission (IEC) and have been transposed into European and German standards. There are also other national and international standards that appliances must fulfil in terms of electrical safety. We offer you cross-standard test programmes that enable us to determine the electrical safety of your devices as a service.
Low Voltage Directive (LVD) and Radio Equipment Directive (RED)
The LVD (Low Voltage Directive), issued by the European Union, describes the duties of importers and manufacturers, such as CE labelling, as well as the obligation to fulfil the electrical safety requirements for devices. These apply to appliances with a rated voltage of between 50 and 1,000 V for alternating current and between 75 and 1,500 V for direct current. The safest and most common way to determine electrical safety is to test the appliance against the relevant product standard. For manufacturers who sell devices below the voltage limit of the LVD, the LVD procedure can be used to fulfil the “Produktsicherheitsgesetz” (ProdSg).
The RED (Radio Equipment Directive) is also issued by the European Union and sets out the essential requirements for radio equipment to ensure that it can be operated safely and efficiently and to ensure the proper functioning of the electromagnetic spectrum. It also includes electrical safety and EMC testing, which Treo offers as a service. For manufacturers, radio modules that are purchased as such usually already fulfil the requirements of the RED. When the product is launched on the market, it is therefore often only necessary to carry out the supplementary tests for the entire device in accordance with RED. As a testing service provider, we specialise in identifying the necessary requirements for your product and supporting you in selecting the appropriate test programme.
Electrical safety is an important issue in every area of application. The protection of people is crucial. So that you can guarantee this protection for your devices, we offer you various test packages in which we turn this safety to our joint priority. As a test laboratory, we specialise in precisely these applications and look forward to supporting you.