The document discusses air type circuit breakers used in electrical power systems. It describes air circuit breakers as switching devices that operate in air at atmospheric pressure and are used at voltages up to 15 kV. The document outlines that air circuit breakers were developed to replace oil circuit breakers and explains their working principle involves using air, but does not provide details. It also lists some of the contents to be covered, including the introduction, types of air circuit breakers, and arc characteristics.

1. DR. SUDHIR CHNDRA SUR DEGREE ENGINEERING COLLEGE
ELECTRICAL ENGINEERING DEPARTMENT
PPT ON air type CIRCUIT BREAKER (POWER SYSTEM 2)
SUBJECT CODE :- EE601
PREPARED BY:-soumya mondal
ROLL 25501616020 3RD YEAR 6TH SEM
ELECTRICL ENGINEERING

2. contents
• Introduction
• What is air type circuit breaker
• What is arc
• Working principle of air type circuit breaker
• Types of air type circuit breaker
• Air blast circuit breaker
• What is arc

3. Introduction
•Electrical circuit breaker is a switching device
which can be operated manually or
automatically for controlling and protection of
electrical power system respectively.

4. Air type circuit breaker
• This type circuit breaker is those kind of circuit breakers which
operates in air at atmospheric pressure.
• After developing ocb(oil circuit breaker) it is replaced in different
countries.
• Air circuit breakers used upto 15 kv .

5. Working principle of airboats