1. Home
  2. Power and energy
  3. Electricity networks and applications
  4. Protection of busbars and transformers

  5. Transformer protection

Article | REF: D4803 V1

Protection of busbars and transformers

Author: Jean-Luc CHANELIÈRE

Publication date: May 10, 2010

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

Français

2. Transformer protection

2.1 Relais Buchholz

This mechanical relay is located in the oil line (figure 11 ) which connects the transformer tank to the oil receiver. It is sensitive to any gas or oil movement. If this movement is slight, it closes a Buchholz alarm contact. In addition, a tripping command is given by another contact which closes in the event of significant movement. This relay is the only device that can detect ignitions between transformer windings that produce a gas release. All transformers and chokes in oil are equipped with this type of relay.

You do not have access to this resource.

Exclusive to subscribers. 97% yet to be discovered!

You do not have access to this resource.
Click here to request your free trial access!

Already subscribed? Log in!

The Ultimate Scientific and Technical Reference

A Comprehensive Knowledge Base, with over 1,200 authors and 100 scientific advisors
+ More than 10,000 articles and 1,000 how-to sheets, over 800 new or updated articles every year
From design to prototyping, right through to industrialization, the reference for securing the development of your industrial projects

This article is included in

Electricity networks and applications

This offer includes:

Knowledge Base

Updated and enriched with articles validated by our scientific committees

Services

A set of exclusive tools to complement the resources

Practical Path

Operational and didactic, to guarantee the acquisition of transversal skills

Doc & Quiz

Interactive articles with quizzes, for constructive reading

Subscribe now!

Ongoing reading
Transformer protection
Outline