Testing

High Voltage Potting & Coating (HVPC) performs all standard tests from analogue electronics such as Pulse, Induction and Isolation. In addition, you can also contact us for specific high-voltage tests. These tests are performed with calibrated equipment in a high-voltage safe room. We also offer the possibility of building auxiliary circuits, performing additional environmental tests and drawing up product specifications.

Testing your product is important to ensure certainty and quality assurance. Testing your product can be part of a development process that is carried out entirely by HVPC, but you can also contact us to justhave your product tested.

Partial Discharge (PD) measurement

The Partial Discharge (PD) measurement, also known as PD test, is important for obtaining knowledge about the reliability of high-voltage electronics. This is, for example, necessary for critical applications such as high voltage on flex layers and pulse transformers.

Partial discharge measurements are non-destructive tests to gain insight into the quality of the product. Unlike burn-in testing, the number of partial discharges gives an insight into the high-voltage behaviour. HVPC has more than 40 years of experience in the decomposition of PD behaviour. With each new product to be tested, a history must be built up to map out the normal behaviour.

HVPC has various measuring setups for in-house PD. For products that operate on a direct voltage, DC is most often measured. This measurement is usually measured at 2 steps, namely in the beginning and after a defined time. The last measurement indicates whether the behaviour is stable.

In addition, we also have alternating current (AC) tests, which show in a shorter period of time whether a product is good. Of course, the product must be suitable for this, just like the measuring setup itself.

In addition, there are variations to be made, think of certain ramp-up/ramp-down scenarios. Here too, HVPC can be of significance and select the right products that meet the high-voltage requirements.

HVPC is one of the few companies that perform Partial Discharge measurements on high-voltage power supplies.

Burn-in testing

Burn-in tests are tests in which the product is exposed for a long time to a certain voltage with a certain load. A disadvantage of a burn-in test is that the product’s lifespan is reduced a little. However, the advantage of the burn-in test is that the product hasalready beenexposed to a certain input voltage for a long time and has to work. Products that require too much current in the meantime or cannot supply enough current are therefore not approved and are rejected.

Insulation test

An insulation testindicates the current leakage between the conductor and GND. The higher this insulation resistance, the smaller this current leakage. HVPC has several in-house MegaOhmMeters to carry out these tests. Insulation testing is particularly necessary for high-voltage electronics to determine whether the product meets the set requirements.

Dielectric Strength measurement

In our test room, disruptive discharge voltages can be measured up to 100kV. Dielectric strength is a measure of the electrical strength of a material as an insulator. Dielectric strength is defined as the maximum voltage required to produce a dielectric disruptive discharge through the material and is expressed in Volts per unit thickness.  We can measure this according to various standards.

HVPC offers the following various generic tests:

In addition to the specific high-voltage tests, we can also perform generic tests within HVPC. These tests are carried out so that your product meets all the set requirements.

·      LCR meter / turn ratio

With an LCR meter, we measure induction, capacity and resistance. This can be done with different frequencies. We can also measure the winding ratio especially for coils.

·      Pulse function generators

We generate pulses to validate the operation of your product.

·      Oscilloscopes

Multiple oscilloscopes are used, including with digital data reading.

·      Megohm / decisive test

Insulation resistance meter. This indicates whether the product does not generate a disruptive discharge on its environment.

·      Multimeters

            Both with 2-wire and 4-wire connection, to neglect measuring wire.

·      400Hz testing

Particularly important for radar system testing. This is a unique fixed frequency at which we can also test products.