CSA C22 2 NO 204-M1984-1984 Line Isolation Monitors (First Edition).pdf
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1、C22.2 No. 204-M1984(reaffirmed 2013)Line isolation monitorsLegal Notice for StandardsCanadian Standards Association (operating as “CSA Group”) develops standards through a consensus standards development process approved by the Standards Council of Canada. This process brings together volunteers rep
2、resenting varied viewpoints and interests to achieve consensus and develop a standard. Although CSA Group administers the process and establishes rules to promote fairness in achieving consensus, it does not independently test, evaluate, or verify the content of standards.Disclaimer and exclusion of
3、 liabilityThis document is provided without any representations, warranties, or conditions of any kind, express or implied, including, without limitation, implied warranties or conditions concerning this documents fitness for a particular purpose or use, its merchantability, or its non-infringement
4、of any third partys intellectual property rights. CSA Group does not warrant the accuracy, completeness, or currency of any of the information published in this document. CSA Group makes no representations or warranties regarding this documents compliance with any applicable statute, rule, or regula
5、tion. IN NO EVENT SHALL CSA GROUP, ITS VOLUNTEERS, MEMBERS, SUBSIDIARIES, OR AFFILIATED COMPANIES, OR THEIR EMPLOYEES, DIRECTORS, OR OFFICERS, BE LIABLE FOR ANY DIRECT, INDIRECT, OR INCIDENTAL DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES, HOWSOEVER CAUSED, INCLUDING BUT NOT LIMITED TO SPECIAL OR CONSEQ
6、UENTIAL DAMAGES, LOST REVENUE, BUSINESS INTERRUPTION, LOST OR DAMAGED DATA, OR ANY OTHER COMMERCIAL OR ECONOMIC LOSS, WHETHER BASED IN CONTRACT, TORT (INCLUDING NEGLIGENCE), OR ANY OTHER THEORY OF LIABILITY, ARISING OUT OF OR RESULTING FROM ACCESS TO OR POSSESSION OR USE OF THIS DOCUMENT, EVEN IF CS
7、A GROUP HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, INJURY, LOSS, COSTS, OR EXPENSES.In publishing and making this document available, CSA Group is not undertaking to render professional or other services for or on behalf of any person or entity or to perform any duty owed by any person or
8、entity to another person or entity. The information in this document is directed to those who have the appropriate degree of experience to use and apply its contents, and CSA Group accepts no responsibility whatsoever arising in any way from any and all use of or reliance on the information containe
9、d in this document. CSA Group is a private not-for-profit company that publishes voluntary standards and related documents. CSA Group has no power, nor does it undertake, to enforce compliance with the contents of the standards or other documents it publishes. Intellectual property rights and owners
10、hipAs between CSA Group and the users of this document (whether it be in printed or electronic form), CSA Group is the owner, or the authorized licensee, of all works contained herein that are protected by copyright, all trade-marks (except as otherwise noted to the contrary), and all inventions and
11、 trade secrets that may be contained in this document, whether or not such inventions and trade secrets are protected by patents and applications for patents. Without limitation, the unauthorized use, modification, copying, or disclosure of this document may violate laws that protect CSA Groups and/
12、or others intellectual property and may give rise to a right in CSA Group and/or others to seek legal redress for such use, modification, copying, or disclosure. To the extent permitted by licence or by law, CSA Group reserves all intellectual property rights in this document.Patent rightsAttention
13、is drawn to the possibility that some of the elements of this standard may be the subject of patent rights. CSA Group shall not be held responsible for identifying any or all such patent rights. Users of this standard are expressly advised that determination of the validity of any such patent rights
14、 is entirely their own responsibility.Authorized use of this documentThis document is being provided by CSA Group for informational and non-commercial use only. The user of this document is authorized to do only the following:If this document is in electronic form:sLOADTHISDOCUMENTONTOACOMPUTERFORTH
15、ESOLEPURPOSEOFREVIEWINGITsSEARCHANDBROWSETHISDOCUMENTANDsPRINTTHISDOCUMENTIFITISIN0$ however, a system including such a device and supervised by one or more responsible, informed persons affords the maximum probability that defective equipment will be disconnected before it causes injury. The Standa
16、rd therefore responds to considerations such as the risk that the device itself will become incapable of performing its intended function, and the risk that the need to silence an audible alarm in special circumstances will result in failure to determine and deal with a cause of alarm. The line isol
17、ation monitors covered in this Standard are of a kind that are programmed to measure, periodically or continuously, an impedance to ground of each “side“ of a single-phase isolated power supply, together with the connected utilization equipment, and to activate an alarm whenever either or both of th
18、ese impedances are equal to or less than a predetermined level. The requirements of CSA Standard Z32.1 both the 1970 edition and that which is now being prepared and of ULC Standard 1022 (July, 1979) were taken into account during the preparation of this Standard. This Standard was prepared under th
19、e jurisdiction of the Standards Steering Committee on Canadian Electrical Code, Part II, and was approved by this Committee and the Technical Committee on Industrial Products. April, 1984 Note: Although the intended primary application of this Standard is stated in its Scope, it is important to note
20、 that it remains the responsibility of the user of the Standard to judge its suitability for his or her particular purpose. CSA Standards are subject to periodical review and suggestions for their improvement will be referred to the appropriate committee. All enquiries regarding this Standard, inclu
21、ding requests for interpretation, should be addressed to Canadian Standards Association, Standards Division, 178 Rexdale Boulevard, Rexdale (Toronto), Ontario M9W 1R3. Requests for interpretation should (a) define the problem, making reference to a specific Clause, and, where appropriate, include an
22、 illustrative sketch; (b) provide an explanation of circumstances surrounding the actual field condition; and (c) be phrased, where possible, to permit a specific “yes“ or “no“ answer. Interpretations are published in “CSA In formation Update“. For subscription details and a free sample copy, write
23、to CSA In formation Centre or telephone (416) 747-4058. Line Isolation Monitors priI, 1984 7 Foreword Foreword The Canadian Standards Association provides certification services for manufacturers who, under license from CSA, wish to use the appropriate registered CSA Marks on certain products of the
24、ir manufacture to indicate conformity with CSA Standards. CSA Certification for a number of products is provided in the interest of maintaining agreed-upon standards of quality, performance, interchangeability and/or safety, as appropriate. Where applicable, certification may form the basis for acce
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