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Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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
27-07-2021
English, French
01-01-2011
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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
Constitutes an application guide and deals with the selection of insulation levels of equipment or installations for three-phase electrical systems. Gives guidance for the determination of the rated withstand voltages for ranges I and II of IEC 71-1 and to justify the association of these rated values with the standardized highest voltages for equipment. Covers three-phase systems with nominal voltages above 1 kV. Covers phase-to-earth, phase-to-phase and longitudinal insulation.
| DocumentType |
Standard
|
| Pages |
268
|
| PublisherName |
Canadian Standards Association
|
| Status |
Superseded
|
| Standards | Relationship |
| IEC 60071-2:1996 | Similar to |
| IEC 60099-4:2014 | Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems |
| IEC 60056:1987 | High-voltage alternating-current circuit-breakers |
| IEC 60505:2011 | Evaluation and qualification of electrical insulation systems |
| IEC 60099-1:1991+AMD1:1999 CSV | Surge arresters - Part 1: Non-linear resistor type gapped surge arresters for a.c. systems |
| IEC 60099-5:2013 | Surge arresters - Part 5: Selection and application recommendations |
| IEC 60060-1:2010 | High-voltage test techniques - Part 1: General definitions and test requirements |
| IEC 60507:2013 | Artificial pollution tests on high-voltage ceramic and glass insulators to be used on a.c. systems |
| IEC 60071-1:2006+AMD1:2010 CSV | Insulation co-ordination - Part 1: Definitions, principles and rules |
| IEC 60721-2-3:2013 | Classification of environmental conditions - Part 2-3: Environmental conditions appearing in nature - Air pressure |
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