PD Annunciator Remotely detect partial discharge activity inside any energised switchgear cabinet using the ndb Technologies PD Annunciator system. The probe is installed on the unit under test and will give instant status thus preventing long term damage to your switchgear equipment. Its unique design allows simultaneous TEV and Acoustic testing for optimized results. The flexible sensor’s unique design allows for combined directional noise acquisition and TEV testing. The PD Annunciator module is equipped with a fast HF PD detection circuit for TEV testing. It also has an ultrasonic detection circuit with a very narrow bandwidth for optimal results. Validation algorithms are used to determine the PD shape in order to select the proper alarm level. Many PD Annunciator modules can be used in cascade thus enabling PD detection on many switchgear cabinets at the same time. Ethernet cables are used for data transmission and power supply. Simultaneous TEV and Acoustic test Easy to install, magnetically held on any metallic switchgear cabinet Air coupled acoustic sensor Built-in wireless communication Easy operation Simple and effective Rugged design TECHNICAL SPECIFICATIONS • Sensor input Three dual-mode channels • Connector type • Ultrasound bandwidth • Power supply PD Annunciator main module 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]

SONOTEV PD SENSOR The SonoTEV sensor is installed directly on the switchgear’s cabinet metallic surface. It detects HF signals caused by partial discharge activity within the switchgear’s system using a capacitive coupling technology. The SonoTEV sensor is also equipped with a surface ultrasonic sensor that target’s acoustic PD signals. The probe’s internal circuit processes the signals and transmits them to the PD Annunciator module. TECHNICAL SPECIFICATIONS • TEV Frequency • Ultrasound Frequency • Power supply Magnetically mounted FLEXIBLE SONOTEV PD SENSOR The flexible SonoTEV sensor is installed...