IEC 61229 pdf download

IEC 61229 pdf download Rigid protective covers for live working on a.c. installations
1 scope
International Standard lEC 61229 is applicable to rigid insulating covers for live working ona.c.installations, including those described in IEC 60743.
The barriers， having dielectric withstand which depends on the positioning clearance,areexcluded from this standard.
1.1Classes
Six classes of covers,differing in electrical characteristics, are provided and designated asclass 0，1，2，3,4 and 5.
1.2Categories
Five categories of covers，differing in special properties related to acid，oil， extreme lowtemperature, extreme high temperature, and humidity are provided.They are designated A,H,c, w and P, respectively.
1.3Types
The type depends on the piece to be protected.
2Normative references
The following referenced documents are indispensable for the application of this document.For dated references, only the edition cited applies.For undated references, the latest editionof the referenced document (including any amendments) applies.
IEC 60050(121):1978,International Electrotechnical Vocabulary – Chapter 121: Electro-magnetism
IEC 60050(151):1978,International Electrotechnical Vocabulary – Chapter 151: Electrical andmagnetic devices
IEC 60050(601):1985,International Electrotechnical Vocabulary – Chapter 601:Generation,transmission and distribution of electricity – General
IEC 60060-1:1989，High-voltage test techniques – Part 1: General definitions and testrequirements
IEC 60060-3:1976,High-voltage test techniques – Part 3: Measuring devices
IEC 60212:1971,Standard conditions for use prior to and during the testing of solid electricalinsulating materials
IEC 60417(all parts),Graphical symbols for use on equipment
IEC 60743:1983,Terminology for tools and equipment to be used in live working
IEC 61318:1994,Live working – Guidelines for quality assurance plans
ISO 2859-1:1999，Sampling procedures for inspection by attributes – Part 1: Samplingschemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
ISO 8402:1994,Quality management and quality assurance – VocabularyIso 900o,Quality management and quality assurance standards
IsO 9002:1994,Quality systems – Model for quality assurance in production，installation andservicing
ISo 9003:1994,Quality systems – Model for quality assurance in final inspection and test
3Definitions
For the purpose of this International Standard, the following definitions apply.3.1Terms defined in accordance with IEC 60050(121),IEC 60050(151) and
IEC 60050(601)
3.1.1
type test
a test of one or more devices made to a certain design to show that the design meets certainspecifications
[IEV 151-04-15]
3.1.2
routine test
a test to which each individual device is subjected during or after manufacture to ascertainwhether it complies with certain criteria. [IEV 151-04-16]
3.1.3
sampling test
a test on a number of devices taken at random from a batch[IEV 151-04-17]
3.1.4
acceptance test
a contractual test to prove to the customer that the device meets certain conditions of itsspecification
[IEV 151-04-20]
3.1.5
electrical puncture
a disruptive breakdown through a solid insulant
[IEV 1 21 -03-1 3, modified]
3.1.6
flashover
an arc by-passing an insulating body
[IEV 1 21 -03-1 4]
3.1.7
nominal voltage of a system
a suitable approximate value of voltage used to designate or identify a system
[IEV 601 -01 -21 ]