This part of IEC 60947 applies to transfer switching equipment (TSE) to be used in power systems for transferring a load supply between a normal and an alternate source with a supply interruption during transfer, the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c.<\/p>\n
It covers:<\/p>\n
manually operated transfer switching equipment (MTSE);<\/p>\n<\/li>\n
remotely operated transfer switching equipment (RTSE);<\/p>\n<\/li>\n
automatic transfer switching equipment (ATSE).<\/p>\n<\/li>\n<\/ul>\n
It covers TSE provided with or without an enclosure.<\/p>\n
Devices necessary for the control (e.g. control switches, etc.) and the protection (e.g. circuit-breakers, etc.) of a TSE are covered by the relevant IEC standards.<\/p>\n
\nNote 1 TSE used only for emergency lighting may be subject to specific rules and\/or legal requirements and are not, therefore, covered by this standard.<\/p>\n<\/blockquote>\n
The object of this part of IEC 60947 is to state:<\/p>\n
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The characteristics of the equipment.<\/p>\n
Text deleted<\/i><\/p>\n<\/li>\n
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The conditions of the equipment with respect to:<\/p>\n
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operation for which the equipment is intended;<\/p>\n<\/li>\n
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operation and behaviour in case of specified abnormal conditions, for example, short-circuit;<\/p>\n<\/li>\n
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dielectric properties.<\/p>\n<\/li>\n<\/ol>\n<\/li>\n
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The tests intended to confirm that these conditions have been met and the methods for performing these tests.<\/p>\n<\/li>\n
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The data to be marked on the equipment and provided by the manufacturer.<\/p>\n<\/li>\n<\/ol>\n
\nNOTE 2 This standard covers also ATSE or RTSE which can be used for safety services as defined in IEC 60364-1 and for which the installation requirements are given by IEC 60364-5-56.<\/p>\n<\/blockquote>\n
\nNOTE 3 Other ATSE requirements are under consideration such as closed transition TSE (make before break transfer operation).<\/p>\n<\/blockquote>\n
PDF Catalog<\/h4>\n
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\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 8<\/td>\n Annex ZZ (informative) <\/td>\n<\/tr>\n \n 11<\/td>\n 1 Scope and object <\/td>\n<\/tr>\n \n 12<\/td>\n 2 Normative references <\/td>\n<\/tr>\n \n 13<\/td>\n 3 Terms and definitions, symbols and abbreviations
3.1 Switching devices <\/td>\n<\/tr>\n\n 14<\/td>\n 3.2 Operation of TSE <\/td>\n<\/tr>\n \n 15<\/td>\n 3.3 Main contact positions
3.4 Symbols and abbreviations <\/td>\n<\/tr>\n\n 16<\/td>\n 4 Classification
5 Characteristics
5.1 Summary of characteristics
5.2 Type of equipment
5.3 Rated and limiting values for the main circuit <\/td>\n<\/tr>\n\n 17<\/td>\n 5.3.1 Rated voltages
5.3.1.1 Rated operational voltage (Ue)
5.3.1.2 Rated insulation voltage (Ui)
5.3.1.3 Rated impulse withstand voltage (Uimp)
5.3.2 Rated operational current (Ie)
5.3.3 Rated frequency
5.3.4 Uninterrupted duty
5.3.5 Rated making and breaking capacities
5.3.6 Short-circuit characteristics
5.3.6.1 Rated short-time withstand current (Icw) <\/td>\n<\/tr>\n\n 18<\/td>\n 5.3.6.2 Rated short-circuit making capacity (Icm)
5.3.6.3 Rated short-circuit breaking capacity (Icn)
5.3.6.4 Rated conditional short-circuit current <\/td>\n<\/tr>\n\n 19<\/td>\n 5.4 Utilization category
5.5 Control circuits
5.5.1 Electro-mechanical devices controlling the main circuit <\/td>\n<\/tr>\n\n 20<\/td>\n 5.5.2 Transfer control devices
5.6 Auxiliary circuits
6 Product information
6.1 Nature of information <\/td>\n<\/tr>\n\n 21<\/td>\n 6.2 Marking
6.3 Instructions for installation, operation and maintenance
7 Normal service, mounting and transport conditions
8 Constructional and performance requirements
8.1 Constructional requirements
8.1.1.1 Resistance to abnormal heat and fire
8.2 Performance requirements
8.2.1 Operating conditions
8.2.1.1 Operating mechanism <\/td>\n<\/tr>\n\n 22<\/td>\n 8.2.1.2 Controls, sequence and limits of operation <\/td>\n<\/tr>\n \n 24<\/td>\n 8.2.2 Temperature rise <\/td>\n<\/tr>\n \n 25<\/td>\n 8.2.3 Dielectric properties
8.2.4 Ability to make and break under no-load, normal load and overload conditions
8.2.4.1 Making and breaking capacities
8.2.4.2 Operational performance
8.2.4.2.1 Electrical operational performance
8.2.4.2.2 Mechanical operational performance
8.2.5 Ability to make and break under short-circuit conditions
8.2.5.1 Rated short-time withstand current <\/td>\n<\/tr>\n\n 26<\/td>\n 8.2.5.2 Rated conditional short-circuit current
8.2.5.3 Rated short-circuit making capacity
8.2.5.4 Rated short-circuit breaking capacity
8.3 Electromagnetic compatibility (EMC)
8.3.1 General
8.3.2 Immunity <\/td>\n<\/tr>\n\n 27<\/td>\n 8.3.3 Emission
9 Tests
9.1 Kinds of tests
9.1.1 General
9.1.2 Type tests
9.1.3 Routine tests
9.1.4 Sampling tests
9.2 Compliance with constructional requirements <\/td>\n<\/tr>\n\n 28<\/td>\n 9.3 Performance
9.3.1 Test sequences
9.3.2 General test conditions
9.3.2.1 General requirements <\/td>\n<\/tr>\n\n 31<\/td>\n 9.3.3 Performance under no-load, normal load and overload conditions
9.3.3.1 Operation
9.3.3.2 Controls, sequence and limits of operation
9.3.3.2.1 General
9.3.3.2.2 Overvoltage condition
9.3.3.2.3 Undervoltage condition of electromagnetic voltage sensing relays
9.3.3.2.4 Operation on loss of supply voltage <\/td>\n<\/tr>\n\n 32<\/td>\n 9.3.3.2.5 Operation on reduction of supply voltage
9.3.3.2.6 Transfer on availability of alternative voltage or voltage-frequency
9.3.3.3 Temperature rise
9.3.3.4 Dielectric properties <\/td>\n<\/tr>\n\n 33<\/td>\n 9.3.3.4.1 Type tests
9.3.3.5 Making and breaking capacities
9.3.3.5.1 General test conditions
9.3.3.5.2 Test circuit <\/td>\n<\/tr>\n\n 34<\/td>\n 9.3.3.5.3 Derived TSE
9.3.3.5.4 Verification of making and breaking capacities <\/td>\n<\/tr>\n\n 35<\/td>\n 9.3.3.6 Operational performance capability
9.3.3.6.1 Derived TSE
9.3.3.6.2 Electrical operational performance <\/td>\n<\/tr>\n\n 37<\/td>\n 9.3.3.6.3 Mechanical operational performance
9.3.4 Performance under short-circuit conditions
9.3.4.1 Test circuit for the verification of short-circuit ratings
9.3.4.2 Verification of short-circuit making and breaking capacities
9.3.4.2.1 General
9.3.4.2.2 Rated short-circuit making capacity <\/td>\n<\/tr>\n\n 38<\/td>\n 9.3.4.2.3 Rated short-circuit breaking capacity
9.3.4.3 Verification of the ability to carry rated short-time withstand current <\/td>\n<\/tr>\n\n 39<\/td>\n 9.3.4.4 Verification of the rated conditional short-circuit current <\/td>\n<\/tr>\n \n 40<\/td>\n 9.4 Routine tests
9.5 EMC tests
9.5.1 General
9.5.2 Immunity
9.5.2.1 General <\/td>\n<\/tr>\n\n 41<\/td>\n 9.5.2.2 Electrostatic discharges
9.5.2.3 Radio-frequency electromagnetic fields
9.5.2.4 Fast transient bursts <\/td>\n<\/tr>\n\n 42<\/td>\n 9.5.2.5 Surges
9.5.2.6 Harmonics
9.5.2.7 Voltage dips and short-time interruptions
9.5.2.8 Performance of the test sample during and after the test
9.5.3 Emission
9.5.3.1 General
9.5.3.2 Conducted radiofrequency emission tests
9.5.3.3 Radiated radiofrequency emission tests <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"Low-voltage switchgear and controlgear – Multiple function equipment. Transfer switching equipment<\/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 2014<\/td>\n 50<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":252349,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[510,2641],"product_tag":[],"class_list":{"0":"post-252343","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-120-40","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\/252343","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\/252349"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=252343"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=252343"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=252343"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}