PRY-CAM For data-driven power EN

Which are the parameters to monitor? In large electrical systems of Extra High, High and MediumVoltage data enabling a predictive approach refers to: partial discharges, load and screen currents, temperatures, pressures, and acoustic events. Partial discharges are intrinsic phenomena that may occur within the insulation material (dielectric) of cables and their accessories and that, in the long run, may damage such material up to causing the failure of a whole cable system. Acquisition of Partial Discharge with PRY-CAM PORTABLE in a Medium Voltage transformer Screen currents trending in an Extra High Voltage (380 kV) underground cable (three-phase AC system) with single-point bonding configuration Note: The straight red line indicates the status of the alarms (0 = none) Load currents are a key parameter that identifies the current actually carried by a cable. Real-time knowledge of its exact value allows to understand if a cable is doing its job properly and, most of all, within the system’s design technical limits. Screen currents are a side effect of the electricity transmitted by a cable system and, regardless of the system’s configuration, they always tend to be kept at the lowest level possible. This is because the effect of these currents on a cable’s metallic screen limits the cable’s current carrying capacity. Keeping these currents under control allows the cable to carry the maximum current.