Immunity Tests

In the past, electro-mechanical devices and systems were generally not sensitive to electro-magnetic disturbances. The electronic equipment and systems now in use are much more sensitive to transient and high frequency disturbances. EMC PARTNER concentrates its activities in the EMC area, specifically in manufacturing transient and low frequency immunity testers. The IEC 61000-4-x standard series defines about 30 different tests.

To find the appropriate equipment for the immunity tests you are looking for please choose from the table of content on the left.

Lightning is an atmospheric discharge of electricity resulting from an accumulation of static charges. Lightning is one of the most common causes of transients in electric systems. While a direct lightning strike is dramatic, it is important to note that the indirect effects are no less severe as lightning produces intense electric and magnetic fields that can couple into nearby power or communication lines.

A commercial aircraft is struck on average once a year. Needless to say, all aircrafts must be lightning tested. There are two lightning simulations: the simulation of the direct strike and the simulation of the induced voltage and current.

To find the appropriate equipment for the lighting tests you are looking for please choose from the table of content on the left.

Component Tests

Technical specifications of components such as varistors, capacitors, resistors, circuit breakers, connectors, insulation, protection relays, etc. are defined in the data sheets of the manufacturers. Tests and measurement must be carried out to verify the technical data of components guaranteed in the data sheets. Depending on the component type the test must be carried out during the manufacturing process or as a type test in an accredited test house. A set of components with the same rating must be tested. The test time increases with the number of components. Therefore the test equipment is very often customised with automatic handling, testing and passed/failed decisions.

To find the appropriate equipment for the component tests you are looking for please choose from the table of content on the left.

Many years ago all the loads connected to the a.c. supply lines were linear loads such as filament lamps, heaters or a.c. motors. Such loads draw sinusoidal currents from the a.c. supply and do not cause any special problems. Today an increasing proportion of the loads are non-linear-loads driving distorted current.

Distorted current can cause many undesirable effects on the a.c. power supply: reducing the effective power factor of a load, overheating of motors and filters etc. It may also cause electro-magnetic interferences with equipment connected to the power supply or placed in the vicinity of the supply.

Another low frequency emission disturbance source is the repetitive voltage variation of supplies. The bulbs of connected lamps start flickering equal the voltage variation and can disturb people.

To find the appropriate equipment for the emission measurements you are looking for please choose from the table of content on the left.