AE-150

Portable Partial Discharge Detection and Localization System for Power Transformers

The AE-150 is used to detect and locate faults in power transformers.

Advantages

• Portable unit

• Very easy to install

• Mirador Tx - Auto-Loc (automatic configuration and 3D positioning)

• Monitoring capability

• Simultaneous processing

of AE and PD signals

• Weather proof

• Cable free

• Wireless communication with

PC and phase reference

ndb Technologies inc. 111-1405, St-Jean-Baptiste Québec (Qc) Canada G2E 5K2 Tél : (418) 877-7701 Fax : (418) 877-7787 E-mail : mkt@ndbtech.com Web : www.ndbtech.com

Application and Operation

Powers transformers are critical to Transmission and D ist r ibut ion substations. In fact, losing a unit can have a major financial consequence. To protect your investment, use Acoustic Emission Testing. This technique is superior to electric methods for on-site tests. The AE-150 detects and locates Partial Discharges in power transformers. This is done by analyzing ultrasonic waves produced by a breakdown of the electrical insulation. The ultrasonic waves travel through the oil and strike the metallic shell of the transformer, providing the AE-150 with the signals needed to locate the problem. The instrument is placed on the metallic surface with the help of the integrated magnetic attachment system. This system provides an easy way of moving the AE-150 to survey the entire transformer. The remote user interface and the RF communication system allow safe operation of the unit even in the most hostile environments. Developed in partnership with Hydro-Quebec and IREQ, the AE-150 brings a high level of acoustic and electrical expertise in an easy-to-use and efficient product.

Key Features

A key feature of the AE-150 is t he capab i lit y to s ync hr on ize aco us t i c emission signals with the electric partial discharge signal. Powerful noise suppression is then achieved t h r o u g h a v e r a g i n g , increasing dramatically the probability of localization.

www.detektor.no

ndb Technologies inc. 111- 1405, St-Jean-Baptiste, Quebec, (Qc) Canada G2E 5K2, Tel: (418) 877-7701 Fax: (418) 877-7787

Product description

• 4 Acoustic Emission Sensors to detect PD (mounted on the main unit as an ’’X’’ shape,

with flexible arms for transformer tank shape adjustment)

• 1 Synchronisation Channel to filter out external random noise

• 1 conventional PD measurement channel (HFCT)

• Magnetically mounted on the transformer tank

• Phase synchronisation using RF communication

• Wireless communication with Portable Computer

• Mirador Tx software with Auto-Loc : Automatic mode for easy diagnostic

• Manual mode for advanced users

Easy and safe installation

Magnetically mounted on

the power transformer Easy handling

Rugged

ergonomic grip.

Transformer shape

adaptability

4 Spring loaded acoustic

emission sensor legs for

proper sensor coupling and

best fit on any surfaces.

Easy coupling

2 axis swivel on

all 4 sensors for

best coupling on

the transformer.

Acoustic denoising

Optional high frequency current

transformer for the PD electrical

signal.

Cable free communication

Optional wireless

communication module with

remote portable computer.

Phase synchronization

Optional wireless phase

synchronization module.

Overview

The AE-150 is remotely operated using a convivial software interface called Mirador Tx. The software

supports both automatic and manual configuration modes. The automat i c mode requires minimal parameter entry from the user. The Auto-Loc feature will then

configure the AE-150 with optimal settings and proceed w ith a sequence of acquisitions that will lead to a successful diagnostic.

Mirador Tx Software

AE-150 localization software interface

Mirador Tx software is a partial discharge localization software for power transformers with automatic localization algorithms for non-expert users.

ndb Technologies inc. 111-1405, St-Jean-Baptiste Québec (Qc) Canada G2E 5K2 Tél : (418) 877-7701 Fax : (418) 877-7787 E-mail : mkt@ndbtech.com Web : www.ndbtech.com

Auto-Loc

The Auto-Loc feature provides the end user with fully automated acquisition sequences. Minimal conf iguration parameters are required from the user to lead to a successful part ial discharge localization. Special confidence level gauges give indications on the coherence of the localization results.

www.detektor.no

ndb Technologies inc. 111- 1405, St-Jean-Baptiste, Quebec, (Qc) Canada G2E 5K2, Tel: (418) 877-7701 Fax: (418) 877-7787

Phase related acquisitions

Mirador Tx will also provide phase related acquisitions such as phase histogram or phase averaging, useful to confirm the presence of partial discharge.

Advanced user mode

Acquisition :

This mode allows manual settings of acquisition parameters such as gains, thresholds, acquisition length and type, trigger sources, averaging etc.

Localization

This window presents required parameters for 3D localization.

• Tank dimensions

• Device position on tank

• Device rotation etc.

Speed of sound in steel and oil can be adjusted if required.

Advanced user mode ...

Control Panel :

An intuitive control panel will trigger manual acquisitions and display status information about the remote unit such as:

• Battery level

• RF communication strength

• Phase detection

• Inhibition channels