Recovery Voltage and Insulation Measurement

DESCRIPTION The ETP-2 equipment measures the following: - Recovery Voltage of the insulation. - Insulation Resistance. - Polarization Index. To measure these parameters, the unit applies different levels of DC test voltage through an internal programmable voltage supply. The measured values are acquired automatically in the specified time. The equipment evaluates the actual general status of the insulation, and detects possible aging problems in the quality of the paper/ oil insulation. CHARACTERISTICS - Fully automatic Recovery Voltage test in all the test cycles of voltage application and discharge of the insulation and measurement acquisition. - Automatic generation of the measured values on each test cycle graphic representation. - Results values are automatically corrected to a reference temperature enabling standard results. - Numerical and graphic presentation gives the results of the following parameters: • Recovery Voltage. • Raising time of the capacity. • Insulation Resistance. • Time constant. • Polarization Index. - The control program allows selecting the following possibilities to perform the insulation tests: • HV + LV against Ground. • HV against LV + Ground. • HV against LV + Tertiary + Ground, etc.