The Capacitance and Dissipation Factor / Tan-Delta Test Set is a precision diagnostic instrument designed for assessing the insulation condition of electrical equipment and high-voltage insulation systems. It measures capacitance and dissipation factor (Tan Delta), two important parameters used to evaluate insulation quality, aging, moisture ingress, contamination, and other deterioration mechanisms. The test set is suitable for routine maintenance, commissioning, condition assessment, and preventive diagnostics of high-voltage electrical assets.