IEC TS 62993, which is a Technical Specification, gives guidance to technical committees which deal with equipment having a RATED VOLTAGE of more than 1 000 V AC and up to 2 000 V AC, or a RATED VOLTAGE of more than 1 500 V DC and up to 3 000 V DC. RATED VOLTAGES up to 1 000 V AC and 1 500 V DC, as well as higher or lower internal voltages, are covered by IEC 60664-1.<\/p>\n
This document applies to equipment for use up to 2 000 m above sea level, and provides guidance for use at higher altitudes.<\/p>\n
This document gives guidance for CLEARANCES, CREEPAGE DISTANCES and SOLID INSULATION for equipment to achieve safety. It includes methods of electric testing.<\/p>\n
\nNOTE Requirements for functional insulation are not specified as they are not regarded as safety requirements.<\/p>\n<\/blockquote>\n
This document does not deal with distances<\/p>\n
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through liquid insulation,<\/p>\n<\/li>\n
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through gases other than air, and<\/p>\n<\/li>\n
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through compressed air.<\/p>\n<\/li>\n<\/ul>\n
PDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n undefined <\/td>\n<\/tr>\n \n 4<\/td>\n CONTENTS <\/td>\n<\/tr>\n \n 6<\/td>\n FOREWORD <\/td>\n<\/tr>\n \n 8<\/td>\n INTRODUCTION <\/td>\n<\/tr>\n \n 9<\/td>\n 1 Scope
2 Normative references <\/td>\n<\/tr>\n\n 10<\/td>\n 3 Terms and definitions <\/td>\n<\/tr>\n \n 13<\/td>\n 4 Basic information for the determination of insulation requirements
4.1 General <\/td>\n<\/tr>\n\n 14<\/td>\n 4.2 Voltages
4.2.1 General
4.2.2 Determination of recurring peak voltage
4.3 Overvoltage categories
Figure 1 \u2013 Recurring peak voltage <\/td>\n<\/tr>\n\n 15<\/td>\n 4.4 Material groups
Table 1 \u2013 Rated impulse voltages according to overvoltage categories <\/td>\n<\/tr>\n\n 16<\/td>\n 4.5 Pollution degrees
4.5.1 General
4.5.2 Degrees of pollution in the micro-environment
4.5.3 Conditions of conductive pollution
4.5.4 Clearances <\/td>\n<\/tr>\n\n 17<\/td>\n 5 Dimensioning rules
5.1 Clearances
Table 2 \u2013 Clearances to withstand transient overvoltages <\/td>\n<\/tr>\n\n 18<\/td>\n Table 3 \u2013 Dimensioning of clearances to working voltages, temporary overvoltages or recurring peak voltages <\/td>\n<\/tr>\n \n 19<\/td>\n 5.2 Creepage distances
5.2.1 General
5.2.2 Voltage
5.2.3 Pollution
5.2.4 Shape of insulating surface
Table 4 \u2013 Altitude correction factors <\/td>\n<\/tr>\n\n 20<\/td>\n 5.2.5 Relationship to clearance
5.2.6 Creepage distances where more than one material is used or more than one pollution degree occurs
5.2.7 Creepage distances split by floating conductive part
Figure 2 \u2013 Determination of the width (W) and height (H) of a rib <\/td>\n<\/tr>\n\n 21<\/td>\n 5.2.8 Dimensioning of creepage distances of basic insulation, supplementary insulation and reinforced insulation <\/td>\n<\/tr>\n \n 22<\/td>\n 5.2.9 creepage distances for DC applications
Table 5 \u2013 Creepage distances to avoid failure due to tracking <\/td>\n<\/tr>\n\n 23<\/td>\n 5.3 Solid insulation
5.3.1 General
5.3.2 Withstand of voltage stresses
6 Tests and measurements
6.1 Tests
6.1.1 General <\/td>\n<\/tr>\n\n 24<\/td>\n 6.1.2 Test for verification of clearances <\/td>\n<\/tr>\n \n 25<\/td>\n Table 6 \u2013 Test voltages based on clearances and a test site altitude of 2 000 m above sea level <\/td>\n<\/tr>\n \n 26<\/td>\n 6.1.3 Tests for the verification of solid insulation
Table 7 \u2013 Correction factors according to test site altitudefor test voltages for clearances <\/td>\n<\/tr>\n\n 28<\/td>\n Table 8 \u2013 Severities for conditioning of solid insulation <\/td>\n<\/tr>\n \n 29<\/td>\n 6.2 Measuring clearances and creepage distances <\/td>\n<\/tr>\n \n 30<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Guidance for determination of clearances, creepage distances and requirements for solid insulation for equipment with a rated voltage above 1 000 V AC and 1 500 V DC, and up to 2 000 V AC and 3 000 V DC<\/b><\/p>\n
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\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2018<\/td>\n 32<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":239768,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[498,2641],"product_tag":[],"class_list":{"0":"post-239762","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-080-30","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/239762","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/239768"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=239762"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=239762"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=239762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}