CSA C71.2 : 1998
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
INSULATION COORDINATION - PART 2: APPLICATION GUIDE
Hardcopy , PDF
07-27-2021
English, French
01-01-2011
FOREWORD
Clause
1 General
1.1 Scope
1.2 Normative references
1.3 List of symbols and definitions
2 Representative voltage stresses in service
2.1 Origin and classification of voltage stresses
2.2 Characteristics of overvoltage protective devices
2.3 Representative voltages and overvoltages
3 Co-ordination withstand voltage
3.1 Insulation strength characteristics
3.2 Performance criterion
3.3 Insulation co-ordination procedures
4 Required withstand voltage
4.1 General remarks
4.2 Atmospheric correction
4.3 Safety factors
5 Standard withstand voltage and testing procedures
5.1 General remarks
5.2 Test conversion factors
5.3 Determination of insulation withstand by type
tests
6 Special considerations for overhead lines
6.1 General remarks
6.2 Insulation co-ordination for operating voltages
and temporary overvoltages
6.3 Insulation co-ordination for slow-front
overvoltages
6.4 Insulation co-ordination for lightning
overvoltages
7 Special considerations for substations
7.1 General remarks
7.2 Insulation co-ordination for overvoltages
Tables and Figures
Annexes
A Clearances in air to assure a specified impulse
withstand voltage installation
B Determination of temporary overvoltages due to earth
faults
C Weibull probability distributions
D Determination of the representative slow-front
overvoltage due to line energization and
re-energization
E Transferred overvoltages in transformers
F Lightning overvoltages
G Calculation of air gap breakdown strength from
experimental data
H Examples of insulation co-ordination procedure
J Bibliography
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