ndb Technologies inc. • 1405 St-Jean-Baptiste, office 111 • Quebec (QC) G2E 5K2 - Canada • Tel: 1(418)877-7701 Fax: 1(418)877-7787 Email: [email protected] www.ndbtech.com Our vision has always been to create a partial discharge alarm system that exceeds any of today’s industry quality, safety and efficiency requirements. The PD Annunciator™ unique design consists of a three channels acquisition module paired with sensors of your choice, most commonly TEV and Acoustic or HFCT. With many advancements and innovations, the PD Annunciator™ handles partial discharge monitoring on metallic cabinets using our proven and advanced technologies. PD ANNUNCIATOR™ MODULE The PD Annunciator™ 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. Software algorithms are used to discriminate partial discharge from ambient noise. Multiple PD Annunciator™ modules can be daisy-chained thus enabling PD detection on many cabinets at the same time. Modbus communication allows for easy integra- tion with existing Scada systems over RS485 standard. FEATURES TEV, Acoustic & HFCT sensor technologies Easy to install Intuitive software Modbus connectivity Local USB connectivity Single or multi-module installation TECHNICAL SPECIFICATIONS • Sensor(s) • Connector type • TEV bandwidth • Ultrasonic bandwidth • Sensitivity • Communication • Alarms Up to three BNC connectors 10 MHz to 500 MHz 38 kHz to 88 kHz (±1dB) 40 dB USB, Modbus over RS485 Local indicators, open collector PD Annunciator™ system PD Annunciator™ Partial Discharge Alarm System