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3WA Air Circuit Breaker
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Table Of Contents
1 Introduction
1.1 Scope of validity of this document
1.2 Target readers of this documentation
1.3 Technical Support
1.4 Reference documents
1.5 Advanced training courses
1.6 Safety instructions
1.6.1 Security information
1.6.2 Open Source Software
1.6.3 More information on Open Source software for 3WA circuit breakers
1.7 Standards
2 Description
2.1 Overview - applications and portfolio
2.1.1 Properties
2.1.2 Portfolio of the 3WA1 circuit breaker
2.1.3 Advantages
2.1.4 Applications
2.2 Circuit breakers and non-automatic circuit breakers
2.2.1 Distinction between circuit breakers and non-automatic circuit breakers
2.2.2 Design
2.2.2.1 Circuit breakers
2.2.2.2 Guide frame
2.2.2.3 Secondary disconnect terminals
2.2.3 Circuit breaker identification
2.2.3.1 Rating and accessory labels
2.2.3.2 Guide frame rating label
2.2.4 Operation
2.2.4.1 Charging the stored-energy spring
2.2.4.2 Closing and opening
2.2.4.3 Racking the circuit breaker in the guide frame
2.2.4.4 Commissioning checklist
2.3 Protection system
2.3.1 General description of function
2.3.2 Option plug
2.3.3 Guideline for setting the protection parameters
2.3.4 Time-current characteristic
2.3.5 Description of the protective functions
2.3.5.1 General description
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