PD Annunciator – Partial Discharge Annunciator system0 pages

TECHNOLOGIES INC.

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.

PD ANNUNCIATOR MODULE

FEATURES

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.

t Simultaneous TEV and Acoustic test
t

t Easy to install, magnetically held on any t
metallic switchgear cabinet
t Air coupled acoustic sensor
t Built-in wireless communication
t Easy operation
t Simple and effective
t Rugged design

TECHNICAL SPECIFICATIONS
•t Sensor inputt

Three dual-mode channels

•t Connector type

BNC connectors

•t TEV frequencyt

2 MHz to 1 GHz

•t Ultrasound bandwidth

+/- 5kHz

•t Power supplyt

9-26V on RJ45C

•t Alarm

SMS / E-mail

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: mkt@ndbtech.com

www.ndbtech.com