{"id":518035,"date":"2024-11-05T14:47:54","date_gmt":"2024-11-05T14:47:54","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/csa-c22-2-no-17713-r2018\/"},"modified":"2024-11-05T14:47:54","modified_gmt":"2024-11-05T14:47:54","slug":"csa-c22-2-no-17713-r2018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/csa\/csa-c22-2-no-17713-r2018\/","title":{"rendered":"CSA C22.2 NO. 177:13 (R2018)"},"content":{"rendered":"

Preface<\/strong><\/p>\n

<\/p>\n

This is the third edition of C22.2 No. 177, Clock-operated switches. It supersedes the previous editions published in 1992 and 1981. It is one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code.<\/span><\/p>\n

<\/p>\n

Scope<\/strong><\/p>\n

<\/p>\n

1.1<\/span><\/p>\n

This Standard applies to clock-operated switches, rated 600 V or less, designed to be used in ordinary locations to close and open circuits to a load at predetermined intervals, and intended to be employed in accordance with the Rules of the Canadian Electrical Code, Part I. The clock-operated switches discussed in this Standard may be<\/span><\/p>\n

<\/p>\n

a) completely enclosed, plug-in, or cord-connected;<\/span><\/p>\n

<\/p>\n

b) incomplete in their enclosure or in other constructional features; or<\/span><\/p>\n

<\/p>\n

c) restricted in performance capabilities for use in other equipment.<\/span><\/p>\n

<\/p>\n

Note: The word switch, when used without further qualification in subsequent Clauses of this Standard, denotes a clock-operated switch.<\/span><\/p>\n

<\/p>\n

1.2<\/span><\/p>\n

This Standard applies to clock-operated switches in which the switching contacts are actuated by a clock-work, a gear-train, hand, electrically-wound spring motors, electric clock-type motors, electronic circuits, or equivalent arrangements. In addition to closing and\/or opening the switching contacts, the clock-operated switches may also indicate the time of day or time interval. This Standard also applies to TV-rated clock-operated switches.<\/span><\/p>\n

<\/p>\n

1.4<\/span><\/p>\n

General requirements applicable to this Standard are given in CAN\/CSA-C22.2 No. 0.<\/span><\/p>\n

<\/p>\n

1.5<\/span><\/p>\n

In this Standard, shall is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; should is used to express a recommendation or that which is advised but not required; and may is used to express an option or that which is permissible within the limits of the Standard.<\/span><\/p>\n

<\/p>\n

Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material.<\/span><\/p>\n

<\/p>\n

Notes to tables and figures are considered part of the table or figure and may be written as requirements.<\/span><\/p>\n

<\/p>\n

Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Clock-operated switches (Including revision history of 2017)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
CSA<\/b><\/a><\/td>\n2013-12-01<\/td>\n59<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2674],"product_tag":[],"class_list":{"0":"post-518035","1":"product","2":"type-product","3":"status-publish","5":"product_cat-csa","7":"first","8":"instock","9":"sold-individually","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/518035","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:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=518035"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=518035"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=518035"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}