Partial discharge measurement system 3i

for low-voltage switchgearsportable

SWITCHGEAR AND CABLE MONITORING SYSTEMS. The portable multipurpose 3i device (Intellectual Insulation Indicator) is for eff ective high-voltage equipment insulation monitoring on-line. The 3i device measures and analyses partial discharges (PD). For eff ective PD measurement and noise rejection, there are two types of sensors used in the device: the acoustic sensor and the TEV sensor. Both the sensors are built into the device case, and so do not need any connection cables. The device is supplied in a strong metal case; at the faceplate there are the colored screen and two buttons: power button and function button. FEATURES The multipurpose 3i device is for on-line insulation condition estimation in the following equipment: • 6 - 35 kV switchgears of various designs; • Terminations and joints of cables; • High-voltage gas-insulated equipment (Gas-Insulated switchgear (GIS)) of any rated voltage. • The tanks of power transformers, breakers, etc.