The PD Annunciator^TM unique design consists of a three channels acquisition module paired with sensors of your choice, most commonly TEV and Acoustic or HFCT.

The PC Annunciator^TM handles partial discharge monitoring on metallic cabinets using NDB’s proven and advanced technologies.

The module is equipped with fast VHF/UHF PD detection circuitry, that TEV type measurements take advantage of. It also has a highly sensitive ultrasonic detection circuitry yielding efficient results. Modbus communication allows for easy integration with existing Scada system over RS485 standard.

Features

- TEV, Acoustic, and HFCT sensor technologies.

- Easy to install.

- Intuitive software.

- Modbus connectivity.

- Local USB connectivity.

- Single or multi-module installation.

SonoTEV Sensor

The SonoTEV^TM sensor is installed directly on the cabinet metallic surface. Its unique design allows for VHF signals detection produced by partial discharge activity within the cabinet enclosure using a capacitive coupling technology. The SonoTEV^TM sensor is also equipped with a contact ultrasonic sensor that targets acoustic PC signals. Its aluminum body case allows for great immunity to nearby electrical noise sources for greater sensitivity.