PD IEC/TR 62066:2002
Current
The latest, up-to-date edition.
Surge overvoltages and surge protection in low-voltage a.c. power systems. General basic information
Hardcopy , PDF
English
24-06-2002
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Foreword
1 Scope
2 Reference documents
3 Definitions
4 Overvoltages in low-voltage systems
5 Lightning overvoltages
5.1 General
5.2 Origin of lightning surge overvoltages
5.3 Lightning surges transferred from MV systems
5.4 Surges caused by direct flash to LV lines
5.5 Lightning surges induced into LV systems
5.6 Examples of induced overvoltages
5.7 Overvoltages caused by flashes to the
structures or in close vicinity
5.8 Recapitulation on lightning overvoltages
6 Switching overvoltages
6.1 General
6.2 Operation of circuit-breakers and switches
6.3 Operation of fuses
6.4 Frequency of occurrence
6.5 Interactions with surge-protective devices
6.6 Recapitulation on switching overvoltages
7 Temporary overvoltages
7.1 General
7.2 Magnitude of temporary overvoltages due to MV
and LV faults
7.3 Temporary overvoltages due to defects in the LV
electrical installation
7.4 Probability of occurrence and severity of harm
7.5 Recapitulation on temporary overvoltage
8 System interaction overvoltages
8.1 General
8.2 Interaction between power system and communications
system
8.3 Other interactions
8.4 Recapitulation on system interactions
9 Observations on surge overvoltages and failure rates
9.1 General
9.2 Using field failure data
9.3 Recapitulation of observations on failure rates
10 Considerations on system outage/equipment failure/fires
10.1 General
10.2 Avoiding interference in system operation
10.3 Preventing permanent damage
10.4 Costs of surge-related interruptions and failures
10.5 Recapitulation on outages and failures
11 Considerations on the use of surge protection
11.1 General
11.2 Power system configuration
11.3 Types of installation
11.4 Occurrence of surges
11.5 SPD disconnector
11.6 Risk assessment
11.7 Recapitulation on the need for surge protection
12 Surge protection application
12.1 General
12.2 Surge protective devices in power distribution
systems
12.3 Basic system characteristics for SPD selection
12.4 Considerations for installation of SPDs
12.5 Coordination among SPDs and with equipment to be
protected
12.6 Recapitulation on surge protection application
Annex A (informative) Complementary information on
lightning-related overvoltages
Annex B (informative) Switching overvoltages
Annex C (informative) Complementary information on
temporary overvoltages
Annex D (informative) Complementary information on
system interaction overvoltages
Annex E (informative) Complementary information on SPD
application
Annex F (informative) Avoiding overvoltages through
good practice for earthing and cabling
Bibliography
Figures
Tables
Describes a general overview on the different kinds of surge over-voltages that can occur on low-voltage installations.
| Committee |
JPEL/64
|
| DocumentType |
Standard
|
| Pages |
134
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
IEC 62066 is a technical report that presents a general overview on the different kinds of surge overvoltages that can occur on low-voltage installations. Typical surge magnitude and duration as well as frequency of occurrence are described. Information on overvoltages resulting from interactions between power system and communications system is also provided.
Additionally, general guidelines are given concerning surge protection means and systems on the basis of availability and risk considerations, including interactions and the need for coordination and consideration of temporary overvoltages in the selection of surge-protective devices.
| Standards | Relationship |
| IEC TR 62066:2002 | Identical |
| BS 6739:2009 | Code of practice for instrumentation in process control systems: installation design and practice |
| 08/30136724 DC : DRAFT MAY 2008 | BS 6739 - CODE OF PRACTICE FOR INSTRUMENTATION IN PROCESS CONTROL SYSTEMS - INSTALLATION DESIGN AND PRACTICE |
| IEC 61024-1-1:1993 | Protection of structures against lightning - Part 1: General principles - Section 1: Guide A: Selection of protection levels for lightning protection systems |
| IEC 61024-1:1990 | Protection of structures against lightning - Part 1: General principles |
| IEC 61643-12:2008 | Low-voltage surge protective devices - Part 12: Surge protective devices connected to low-voltage power distribution systems - Selection and application principles |
| IEC TR 61000-4-1:2016 | Electromagnetic compatibility (EMC) - Part 4-1: Testing and measurement techniques - Overview of IEC 61000-4 series |
| IEC 60364-5-53:2001+AMD1:2002+AMD2:2015 CSV | Electrical installations of buildings - Part 5-53: Selection and erection of electrical equipment - Isolation, switching and control |
| IEC 61663-2:2001 | Lightning protection - Telecommunication lines - Part 2: Lines using metallic conductors |
| IEC 61000-4-4:2012 RLV | Electromagnetic compatibility (EMC) - Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test |
| IEC TR 61000-5-2:1997 | Electromagnetic compatibility (EMC) - Part 5: Installation and mitigation guidelines - Section 2: Earthing and cabling |
| IEC TR 61000-2-5:2017 | Electromagnetic compatibility (EMC) - Part 2-5: Environment - Description and classification of electromagnetic environments |
| IEEE 1036-2010 | IEEE Guide for the Application of Shunt Power Capacitors |
| IEC 61643-1:2005 | Low-voltage surge protective devices - Part 1: Surge protective devices connected to low-voltage power distribution systems - Requirements and tests |
| IEC 60364-4-44:2007+AMD1:2015 CSV | Low-voltage electrical installations - Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances |
| IEC 61312-1:1995 | Protection against lightning electromagnetic impulse - Part 1: General principles |
| IEC 60664-1:2007 | Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests |
| IEC TS 61312-3:2000 | Protection against lightning electromagnetic impulse - Part 3: Requirements of surge protective devices (SPDs) |
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