24 hours monitoring and beyond is usually carried out when there is a high amount of disturbances esp harmonics and from the surrounding. Such disturbances can interfere with our noise filtering software and the partial discharge analysis.Another reason is when there is a presence of cavity or insulation discharges in the equipment. This needs to be captured to track when the discharge activity is the highest in order to accord the proper severity levels for later follow up if necessary.Therefore, in such cases, online monitoring of 24 hours or beyond is preferred.We will recommended 5 days or more depending on the kind of data to be collected and the plant’s operational requirements.