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Engineer's Relay Handbook

The following reference material is reprinted, with permission, from the Engineer's Relay Handbook, 5th edition, published by the Relay and Switch Industry Association (RSIA) – formerly NARM. For information on the association or how to obtain the complete handbook, contact:

Relay and Switch Industry Association (RSIA)
2500 Wilson Boulevard
Arlington, VA 22201
(703) 907-8025
Fax: (703) 875-8908
E-mail: narm@ecaus.org

CHAPTER 1.1 INTRODUCTION
CHAPTER 1.2 SCOPE OF THIS SECTION
CHAPTER 1.3 DEFINING RELAY PERFORMANCE
CHAPTER 1.4 RELAY DESIGNATIONS SYMBOLS DIAGRAMS
CHAPTER 1.5 RELAY LETTER SYMBOLS
CHAPTER 1.6 RELAY COIL AND CONTACT SYMBOLS
CHAPTER 1.7 RELAY TERMS AND DEFINITIONS (ABC)
CHAPTER 1.7 RELAY TERMS AND DEFINITIONS (DEFGHIJKLMNOP)
CHAPTER 1.7 RELAY TERMS AND DEFINITIONS (QR)
CHAPTER 1.7 RELAY TERMS AND DEFINITIONS (STUVWXYZ)
CHAPTER 3.1 PRINCIPLES OF OPERATION INTRODUCTION
CHAPTER 3.2 PRINCIPLES OF OPERATION DIRECT CURRENT RELAYS
CHAPTER 3.3 PRINCIPLES OF OPERATION MECHANICAL REQUIREMENTS
CHAPTER 3.4 PRINCIPLES OF OPERATION POWER FORCE STROKE RELATIONSHIP
CHAPTER 3.5 MATCHING MECHANICAL AND ELECTRICAL CHARACTERISTICS
CHAPTER 3.6 DYNAMIC CONSIDERATIONS
CHAPTER 3.7 DESIGN ANALYSIS
CHAPTER 3.8 WINDING CIRCUIT DESIGN
CHAPTER 3.9 WINDING RESISTANCE AND SENSITIVITY
CHAPTER 3.10 DIELECTRIC CONSIDERATIONS
CHAPTER 3.11 TIMING CHARACTERISTICS
CHAPTER 3.12 HEATING CONSIDERATIONS
CHAPTER 3.13 CONTACT PERFORMANCE
CHAPTER 3.14 CONTACT CHARACTERISTICS
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