NEMA SG 4:2009(R2013)

Foreword
Section 1 - GENERAL
  1.1 Scope
  1.2 References
  1.3 Definition
      1.3.1 Applicable American National Standards
Section 2 - RATING STANDARDS
  2.1 Applicable American National Standards
Section 3 - FUNCTIONAL COMPONENTS AND REQUIREMENTS
  3.1 Applicable American National Standards
  3.2 Operating Mechanisms For Outdoor Circuit Breakers
      3.2.1 All Operating Mechanisms
      3.2.2 For Pneumatic Mechanisms Only
      3.2.3 For Spring Charge Mechanisms
      3.2.4 For Hydraulic Mechanisms
  3.3 Requirements for Terminals and Connections
      3.3.1 Threaded Terminals
      3.3.2 Flat Terminals
      3.3.3 Ground Terminals
  3.4 Instrument Current Transformers
      3.4.1 Ratings
      3.4.2 Characteristics
      3.4.3 Test Procedures
  3.5 Undervoltage Trip Device
  3.6 Secondary and Control Wiring (Small Wiring)
Section 4 - TESTING STANDARDS
  4.1 Applicable American National Standards
  4.2 Radio Influence Voltage Tests as Applicable
      (Design Test)
  4.3 Noise Requirements
      4.3.1 Terminology and Definitions
      4.3.2 Noise Exposure Conditions
      4.3.3 Noise Level
      4.3.4 Noise Measurement Equipment
      4.3.5 Design Tests
Section 5 - SPECIAL APPLICATION
  5.1 Repetitive Duty Circuit Breakers for Arc Furnace
      Switching
      5.1.3 Operating Conditions
      5.1.4 Conditions of the Circuit Breaker
      5.1.5 Minimum Operations Under Fault Conditions
Section 6 - RECOMMENDED INSTALLATION, OPERATION, AND
            MAINTENANCE PROCEDURES
  6.1 General
Appendices
A BUSHING POTENTIAL DEVICES FOR TANK-TYPE OUTDOOR OIL
  CIRCUIT BREAKERS
B TYPICAL CONNECTION FOR SECONDARY BURDENS