Megger FRAX Series User Manual

1. Introduction
Thank you for your trust in Megger.
We have the goal to always oer you a pleasant purchasing experience. The FRAX-series is developed and
manufactured in Sweden by knowledgeable and committed employees. Every day, our team does its best to
oer best in class products and services.
This document contains information regarding the correct use and handling of FRAX-series. Keep this
document at hand when using the product. Please ensure to consult the chapter ‘Safety’. This chapter
contains important information for your personal safety. Read the safety regulations attentively before
using this device.
1.1. Product description, FRAX
Most dielectric and mechanical failures in large power transformers are preceded by mechanical changes
in the winding structure. These displacements in the winding structure may be the result of transportation
damage, short circuit forces, or natural aging eects on the insulating structures used to support the wind-
ings. Detection of these displacements before dielectric failure reduces maintenance costs and improves
system reliability.
FRAX Sweep Frequency Response Analyser (SFRA) is designed to detect winding displacements in power
transformers or faults in the magnetic core. The system provides attenuation signature curves that can
easily be compared for deviations which indicate:
▪ Core movements
▪ Winding deformations and displacements
▪ Faulty core grounds
▪ Partial winding collapse
▪ Hoop buckling
▪ Broken or loosened clamping structures
▪ Shorted turns and open windings
1.2. Company website
Occasionally an information bulletin may be issued via the Megger website. This may concern new accesso-
ries, new usage instructions or a software update. Please occasionally check on the Megger web site for
anything applicable to your Megger instruments.
www.megger.com
1.3. Receiving Instructions
This instrument has been thoroughly tested and inspected to meet rigid specications before being ship-
ped. It is ready for use when set up as indicated in this user manual.
▪ Check the equipment received against the packing list to ensure that all materials are present. Notify
Megger of any shortage.
▪ Examine the instrument for damage received in transit. If damage is discovered, le a claim with the
carrier at once and notify Megger, giving a detailed description of the damage.
1.4. Support, service & repair
Technical support
For technical assistance please contact your local representative or direct your request to Megger in
Sweden.
Introduction
www.megger.com FRAX-series 5

Megger FRAX Series Specifications

General

Brand	Megger
Model	FRAX Series
Category	Measuring Instruments
Language	English