Course detail

Diagnostics and electrical equipments protections

FEKT-NDJZAcad. year: 2011/2012

Types of tests for electrical equipments. Testing methods and high speed transients PC based evaluation. Protections against faults in electrical equipments. Characteristics and principles of miniature circuit breakers and protections in industrial units. Electrical network protections, MV and LV motors and generators protections. Protectin devices for transformers, capacitancies, batteries etc. Protection of semiconductor equipments. Overvoltage protection devices. Protection against body hazard.

Language of instruction

English

Number of ECTS credits

6

Mode of study

Not applicable.

Guarantor

Ing. Jiří Valenta, Ph.D.

Department

Department of Power Electrical and Electronic Engineering (UVEE)

Learning outcomes of the course unit

Basic protection characteristics, application for industrial equipment, for network, transformers, electric motors and other industrial designs. Protection against body hazard - application according to the latest international standards.

Prerequisites

The subject knowledge on the Bachelor´s degree level is requested.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies and Examinations.

Assesment methods and criteria linked to learning outcomes

exam - 70 points
test and practice - 30 points

Course curriculum

Not applicable.

Work placements

Not applicable.

Aims

To acquaint students with the mechanical and climatic tests of electrical equipments and test evaluation. Characteristics of MCBs and protections. Methods and equipments' applications.

Specification of controlled education, way of implementation and compensation for absences

The content and forms of instruction in the evaluated course are specified by a regulation issued by the lecturer responsible for the course and updated for every academic year.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Tříska J.:Jištění,SNTL 1962 (CS)
Franken:Jištění elektromotorů,SNTL (překlad z něm. j.) (CS)
Havelka a kol.:Elektrické přístroje,SNTL 1985 (CS)
Bašta a kol.: Měření na elektrických strojích, SNTL 1959 (CS)

Recommended reading

Heumann, G. W.: Overload Relays and Circuit Breakers for Protecting Motorized Appliances and Their Branch Circuits (EN)

Classification of course in study plans

  • Programme EEKR-MN Master's

    branch MN-SVE , 2. year of study, winter semester, optional specialized

Type of course unit

 

Lecture

13 hours, optionally

Teacher / Lecturer

Ing. Jiří Valenta, Ph.D.

Syllabus

Introduction to the electrical equipment testing.
Voltage test
Mechanical and climatic tests.
Load test. Short circuit laboratory equipments.
Purpose of electrical equipment protections.
Failures and types of faults
Protection devices basic characteristics
Fuses, characterics and applications
Protections of electric motors and transformers
Computarized protections
Selectivity of protection devices
Protection against body hazard
Protections against overvoltages

Exercise in computer lab

4 hours, optionally

Teacher / Lecturer

Ing. Jiří Valenta, Ph.D.

Syllabus

Choice of protection device for electric motor and el. network
PC aided selectivity design.

Laboratory exercise

22 hours, optionally

Teacher / Lecturer

Ing. Jiří Valenta, Ph.D.

Syllabus

Electrical equipment type and production measurements and tests.
Switchgear thermal characteristics meassurements.
Electrical switch voltage test.
Test of el. device switching time.
Thermal relay characteristic measurements.
Practical test of sectivity in laboratory circuits
Connection and test of overvoltage protection <BOD<Test of microprocessor protection
Impedance loop calculation and meassurement
Residual current device testing
SPACOM protection using and simulation