CSA C22.2 No. 5 PT1 : 1991

Technical Committee on Industrial Products
Subcommittee on C22.2 No.5
Preface
Foreword
1 Scope
2 Definitions
3 General Requirements
4 Constructing
    4.1 General
    4.2 Enclosures
    4.3 Bases
    4.4 Current-Carrying Parts
    4.5 Wiring Terminals
    4.6 Operating Mechanism
    4.7 Trip Mechanism
    4.8 Spacings
5 Marking
6 Tests
    6.1 Test Schedules
    6.2 Selection of Samples
    6.3 Calibration
          6.3.1 Conditions
          6.3.2 200 Per Cent
          6.3.3 135 per Cent
          6.3.4 100 Per Cent
          6.3.5 Instantaneous
    6.4 Overload
          6.4.1 Conditions
          6.4.2 Test
    6.5 Temperature and 100% Calibration
          6.5.1 General
          6.5.2 Conditions
          6.5.3 Test
          6.5.4 Conditions - 100% Continuous Operation
          6.5.5 Test - Continuous Operation, 100% Rating
    6.6 Endurance
          6.6.1 Conditions
          6.6.2 Test
    6.7 Calibration Repeated
    6.8 Rupturing Capacity
          6.8.1 Conditions
          6.8.2 Test
    6.9 Calibration Repeated
    6.10 Dielectric Strength
    6.11 Switching Duty
    6.12 High Interrupting Ratings
          6.12.1 General
          6.12.2 Calibration
          6.12.3 Short-Circuit Interruption
          6.12.4 Circuit Characteristics
          6.12.5 Trip-Out
          6.12.6 Dielectric Strength
    6.13 Interrupting Ratings of Breakers in Series
          6.13.1 General
          6.13.2 Short-Circuit Interruption
          6.13.3 Intermediate Interruption
    6.14 Current-Limiting Breakers
          6.14.1 General
          6.14.2 Calibration
          6.14.3 Short-Circuit Interruption and Let-Through
                  Measurement
          6.14.4 Trip-Out
          6.14.5 Dielectric Strength
7 Adjustable Breakers
    7.1 General
    7.2 Test
    7.3 Current-Trip Adjustment Type and Changeable
          Ampere Type Breakers with Integral (System)
          Ground-Fault Protection
          7.3.1 General
          7.3.2 Internal Wiring
          7.3.3 Supply Connections
          7.3.4 Test Circuits
          7.3.5 Spacings
          7.3.6 Tests
8 Breaker accessories
    8.1 Scope
    8.2 Definitions
    8.3 General requirements
    8.4 Construction
          8.4.1 Components
          8.4.2 Installation
          8.4.3 Mounting
          8.4.4 Field Wiring
          8.4.5 Strain Relief
          8.4.6 Spacings
          8.4.7 Performance
    8.5 Marking
    8.6 Tests
          8.6.1 Performance
          8.6.2 Alarm and Auxiliary Switches
          8.6.3 Shunt-Trip Devices
          8.6.4 Undervoltage-Trip Devices
          8.6.5 Overvoltage-Trip Devices
          8.6.6 Electrical Operators
9 Fused Breakers and high-Fault Protectors
    9.1 Scope
    9.2 Definition
    9.3 Construction
    9.4 Tests
10 Instantaneous-Trip Circuit Breakers
    10.1 Scope
    10.4 Construction
    10.6 Tests
          10.6.1 General
          10.6.2 Calibration
          10.6.3 Overload
          10.6.4 Calibration Repeated
          10.6.5 Temperature
          10.6.6 Endurance
          10.6.7 Calibration Repeated
          10.6.8 Rupturing Capacity
          10.6.9 Trip-Out
          10.6.10 Dielectric Strength
Tables
Figures
Appendix A Circuit calibration and Instrumentation for
Testing Breakers with High Interrupting Ratings

Construction and test of moulded case circuit breakers with a rating of 6000 A or less and 600 V or less. They are intended for the protection of services, feeders and branch circuits in accordance with Canadian Electrical Code Part I.