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Electronic equipment comprising safety functions must be subject to a risk analysis, where the potential impact of all kinds of environmental influence from the surroundings, including the influence from the user environment and the user self, is to be identified and handled. The HALT approach (in this case denoted High Amplitude Limit Test) provides an opportunity, where the iterative testing and...
In most cases the results of susceptibility tests based upon pass/fail criteria are purely qualitative; because of this reason it is impossible to define the susceptibility safety margin defined as the difference between the 50% probability of malfunction and the probability of the most critical test conditions. With the help of Logistic Regression one can give a quantitative interpretation also to...
This paper investigates the safety consequences of the use of EMI filters on board ships. Ship's power supply systems differ from their land-based counterparts but there are no special “EMI filters for ship-board use” on the market. The paper shows that the level of protection against electric shock is severely undermined when normal EMI filters are applied on board ships.
The paper presents selected results of electromagnetic disturbance measurements recorded in working mine conditions. Attention has been brought to the most important phenomena which can be insufficiently reflected in the requirements of current EMC standards. The paper also refers to examples of potential lack of compatibility of mining equipment. The issues concern equipment produced by different...
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