OMICRON

The most reliable method for determining the potential risk of personal injury is the step and touch voltage approach.

To measure step and touch voltage, an overhead line or cable is typically used to feed current into a remote grounding system to form a voltage dip. Touch voltages can then be measured on the fencing surrounding the respective substation or other potential contact danger areas. To date, these measurements have generally been made with precise or approximate line frequency. This made suppression of line frequency interference complex and costly, since the faults are not necessarily constant over time.

The innovative measuring system developed by OMICRON is capable of outputting very high power and generating signals outside the line frequency range. The results are accurate measured values. Potential faults can be found and eliminated extremely accurately as per CENELEC HD 637 S1 or IEEE 80-2000, IEEE 81-1983 and IEEE 81.2-1991, while any touch voltages that occur can also be accurately measured. In many cases, the cost of performing this measurement is significantly lower than measuring voltage dips.