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CSA C22.2 NO. 274:17 (R2021)
Adjustable speed drives- 발행일 : 2017-01-01
- 발행기관 : CSA
상세정보
| 분야 | 11 : LG Electronics |
|---|---|
| 적용범위 | Revision(s) to this standard are available. Preface This is the second edition of CSA C22.2 No. 274, Adjustable speed drives, one of a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code. It supersedes the previous edition published in 2013.? This edition includes? a) updates to the Scope to deal with integrated motor/drive combinations;? b) clarification on using the spacing requirements of IEC 61800-5-1;? c) clarification on the use of MOVs;? d) clarifications regarding the 30 A fuse in ground circuits;? e) expansion of the contactor overload requirements;? f) information on testing when surge arresters are present;? g) additional requirements for mechanical interlocks;? h) an annex on dielectric testing; and? i) numerous other minor edits and clarifications throughout.? This Standard follows traditional North American practices for evaluating adjustable speed drives, the international requirements described in IEC 61800-5-1 were reviewed in detail and accommodated within this Standard whenever possible. It is anticipated that the next round of activity for adjustable speed drives will be an adoption of IEC 61800-5-1 to align Canadian requirements with those of the IEC.? For general information on the Standards of the Canadian Electrical Code, Part II, see the Preface of CAN/CSA-C22.2 No. 0.? Scope 1.1 This Standard specifies requirements for adjustable speed drives (ASDs) with respect to electrical, thermal, and energy safety considerations. It applies to adjustable speed ac and dc electric drives connected to line voltages up to 34.5 kV, 50 Hz, or 60 Hz.? 1.2 This Standard applies to the following:? a) power conversion, drive control equipment and interface circuits;? b) servo drives and integral servo drive/motor combinations; and? c) integrated ASDs (adjustable speed drives) where the motor and ASD are mechanically integrated into a single unit.? 1.3 The equipment covered by this Standard is for use in ordinary locations in accordance with the Canadian Electrical Code, Part I.? 1.4 The adjustable speed drives covered by this Standard are intended for use in an ambient temperature range of 0 to 40 °C.? Note: This Standard does not include requirements for equipment intended for use in an ambient temperature outside of this range. Additional investigation of the equipment is needed when equipment is to be used in ambient temperatures outside of this range.? 1.5 Equipment intended for special applications can be subject to additional requirements not included in this Standard.? 1.6 This Standard does not apply to solid state, single phase motor speed controls rated 300 V and less, 20 A and less that are covered by CSA C22.2 No. 156.? 1.7 This Standard does not apply to? a) traction and electric vehicle drives;? b) motors as covered by CSA C22.2 No. 100;? c) driven equipment;? d) cord connected drives; and? e) the motor portion of a motor and ASD system that is mechanically integrated into a single unit.? 1.8 The values given in SI units are the units of record for the purposes of this Standard. The values given in parentheses are for information and comparison only.? 1.9 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.? 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.? Notes to tables and figures are considered part of the table or figure and may be written as requirements.? Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application. |
| 국제분류(ICS)코드 | |
| 페이지수 | 142 |
| Edition |
이력정보
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | CSA C22.2 NO. 274:17 (R2021)상세보기 | Adjustable speed drives | 2017-01-01 | 표준 |
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