Pdf practice of iec 60422 in ageing assessment of inservice. Pdf on aug 23, 2015, sj tee and others published practice of iec 60422 in ageing. Seasonal influence on moisture interpretation for transformer. As can be interpreted from table 1, oil temperature plays a role in the interpretation of moisture in oil measurements.
This international standard is applicable to mineral insulating oils, originally supplied conforming to iec 60296, in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable and where the normal operating conditions. Mineral insulating oils in electrical equipmentsupervision and. This international standard is applicable to mineral insulating oils, originally supplied conforming to iec 60296, in transformers, switchgear and. This is achieved via the reference to an international standard, such as. International standards for electrical installation iec 60038 standard voltages iec 600762 power transformers temperature rise iec 600763 power transformers insulation levels, dielectric tests and external clearances in air iec 600765 power transformers ability to withstand shortcircuit. Typical percentile values are calculated for moisture, acidity, breakdown voltage and furans levels whose results are compared with the limit values provided in iec 60422 and ieee c57. Huiles minerales isolantes dans les materiels electriques iec 60422 edition 4. Iec shall not be held responsible for identifying any or all such patent rights. International standard iec 60446 has been prepared by iec technical committee 16. Basic and safety principles for manmachine interface, marking and identification. Gives guidance on the supervision and maintenance of the quality of the insulating oil in electrical equipment. This fourth edition cancels and replaces the third edition, published in 1999 and constitutes a.
As can be interpreted from table 1, oil temperature. Iec standards often have multiple subpart documents. International standards for electrical installation. This international standard is applicable to the procedure to be used for insulating liquids in delivery containers and in electrical equipment such as power and instrument transformers, reactors, bushings, oilfilled cables, oilfilled tanktype capacitors, switchgear and load tap changers ltcs. This fourth edition cancels and replaces the third edition, published in 2005, and constitutes a. This is an incomplete list of standards published by the international electrotechnical commission iec.
Mineral insulating oils in electrical equipment supervision and maintenance guidance close. This fourth edition cancels and replaces the third edition, published in 2005, and constitutes a technical revision. International standard iec 60296 has been prepared by iec technical committee. The numbers of older iec standards were converted in 1997 by adding 60000. International standard iec 60446 basic and safety principles for manmachine interface, marking and identification identification of equipment terminals, conductor terminations and conductors defines basic safety principles for identifying electrical conductors by colours or numerals, for example in electricity distribution wiring. This standard is applicable to mineral insulating oils, originally supplied conforming to iec 60296, in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable and where the normal operating conditions specified. Ageing assessment of transformer insulation through oil test.
Anewtestfor quicklydeterminingtheacid content oftransformer oils. This international standard is applicable to mineral insulating oils, originally supplied conforming to iec 60296, in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable and where the normal operating conditions specified in the equipment specifications apply. Bs en 60422 applies to mineral insulating oils, originally supplied conforming to bs iec 60296, and used in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable and where the normal operating conditions specified in the equipment specifications apply. Find the most uptodate version of iec 60422 at engineering360. This international standard is applicable to mineral insulating oils, originally supplied conforming to iec 60296, in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable and where the normal operating. List of international electrotechnical commission standards. Get a quote for certification of systems, products or services, and get certified.
The principle of iec 60422 is that not all tests individual tests for each group are listed. This international standard gives guidance on the supervision and maintenance of the quality of the insulating oil in electrical equipment. This is achieved via the reference to an international standard, such as iec 60422 29. Mineral insulating oils in electrical equipment supervision and. International standard iec 60422 has been prepared by iec technical committee 1ids 0. Iec 60422, mineral insulating oils in electrical equipment supervision and. This standard is applicable to mineral insulating oils, originally supplied conforming to iec 60296, and used in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable and where the normal operating conditions specified in the equipment. Iec 60422 1989 supervisionmaintenance and guide for mineral insulating oils in electrical equipment issued by the international electrotechnical commission. This international standard is applicable to mineral insulating oils, originally supplied conforming to iec 60296, in transformers, switchgear and other electrical apparatus where oil sampling is reasonably practicable. Iec60422 mineral insulating oils in electrical equipment. The international electrotechnical commission iec is the leading global organization that prepares and publishes.
Iec 60422, mineral insulating oils in electrical equipment supervision and maintenance guidance iec 60475, method of sampling liquid dielectrics iec 60628. The effect of moisture on the breakdown voltage of. International electrotechnical commission iec page count. International standard iec 60422 has been prepared by iec technical committee 10. Pdf practice of iec 60422 in ageing assessment of in. For example, for new transformers above 170 kv the recommended lower limit is 60 kv, whereas breakdown voltages below 50 kv indicate a need for oil reconditioning 2. Nzqa expiring unit standard 14278 version 4 page 1 of 4 title carry. Iec 60422 is a standard that recommends not only a list of oil test parameters along with value ranges indicating good, fair and poor conditions. This international standard specifies test methods for the analysis of 2furfural and related furan compounds. This is an incomplete list of standards published by the international electrotechnical commission iec the numbers of older iec standards were converted in 1997 by adding 60000. A common reference for interpretation of oil test results is iec 60422, titled mineral insulating oil in electrical equipment supervision and maintenance guidance 11. Safety manual electricity industry smei wellington.
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