The document discusses apparatus protection in electrical engineering, focusing on transformers, generators, and motors. It covers circuit breakers, including their operating modes, selection criteria, and types such as bulk oil, minimum oil, air blast, SF6, vacuum, and DC circuit breakers. This content is part of the NEE-602 course on switchgear and protection.

1. Unit-V
APPARATUS PROTECTION
Md Irshad Ahmad
Irshad.ahmad@jit.edu.in
Electrical Engineering Department
Subject: NEE –602: SWITCHGEAR AND PROTECTION

2. CONTENT
 Protection of Transformer
 Generator and motor.
 Circuit Breaker: Operating modes
 Selection of circuit breakers
 Constructional features and operation of Bulk Oil,
 Minimum Oil,
 Air Blast,
 SF6,
 Vacuum and d. c. circuit breakers.

67. Thank you