Shocks (intensity according to DIN EN 50155)
This test is performed to check and document the resistance of a terminal connection to irregular occurring shocks with varying energy content. Intensities from DIN EN 50155 or DIN EN 61373 (European standard for railway applications) are used to simulate the load in rail traffic.
For the definition of the shock, acceleration and duration are specified. IEC 60068-2-27 prescribes three positive and negative shocks on each of the three spatial axes (x, y, z). The simulated accelerations reach 50 m/s² with a shock duration of 30 ms. No damage may occur at the terminal connection that would impair further use. The contact behavior at the test objects is monitored during the test. When the railway standard is applied, no contact interruptions > 1 µs are permitted.
Phoenix Contact terminal blocks achieve this shock resistance and are suitable for applications with the most extreme vibrations.
Broadband noise (intensity according to DIN EN 50155)
In traffic technology, terminal blocks are always exposed to vibrations and shocks. For a practical simulation of the vibration stress, the test objects are subjected to broadband noise-induced vibrations. This means that realistic accelerations are generated at the terminal block and the connected conductor.
During the test of category 1b, the objects are exposed to a frequency range of 5 Hz to 150 Hz. The r.m.s. value of the acceleration is up to 5.72 m/s². The test objects are tested for five hours in each of the three axes (x, y, z). In addition to the vibrations, the electrical contact is monitored during the test to make it more difficult. No damage may occur to the terminal blocks that would impair their further use. In addition, no contact interruptions of 1 μs are permitted during the test.
All Phoenix Contact terminal blocks, whatever their connection technology, meet this high vibration requirement.
This test demonstrates the vibration resistance of a terminal connection subjected to permanent vibrations. Harmonic, sinusoidal vibrations are applied to the test object to simulate rotating, pulsating or oscillating forces. The test is performed on each of the three spatial axes (x, y, z).
In the test, the object runs through a frequency range of 5 Hz to 150 Hz at a speed of one octave per minute. The r.m.s. value of the acceleration is up to 50 m/s². The test objects are tested for two hours on each of the three axes (x, y, z). In addition, the electrical contact is monitored during the test. No damage may occur to the terminal blocks that would impair their further use. In addition, no contact interruptions > 1 μs are permitted during the test.
All connection technologies meet the requirements of the standard without the electrical contact being interrupted. They are therefore particularly suitable for challenging applications in which the reliable function of the terminal connection must be ensured, even when subjected to the most extreme vibrations.