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Power transformers and reactors
| 분야 | 11 : LG Electronics |
|---|---|
| 적용범위 | Preface This is the fifth edition of CSA C88, Power transformers and reactors. It supersedes the previous editions published in 1991, 1979, 1968, and 1947. This Standard is written in reference to two winding transformers, although many requirements are common to multi-winding transformers, autotransformers, load-tap-changing transformers, shunt reactors, and series-voltage regulators. Where there are special requirements for these other transformers, there are clauses in the Standard specifically addressed to these other types of transformers. In addition to general updating, this edition of the Standard includes the following key revisions: a) Reference publications and definitions have been expanded and updated. b) A cold start procedure has been included (see Clause 4.6) with informative background material in Annex A. c) Insulating liquid with a fire point greater than 300 °C has been included (see Clause 6.2.1). d) Limits of temperature rise with respect to internal hot spot have been revised (see Clause 9.2d)). e) Requirements for stabilizing windings have been revised (see Clause 12.3). f) A new clause on gasket materials has been included (see Clause 15.1.27). g) Requirements for control cabinets have been expanded (see Clause 15.1.22). h) Several tests have been revised including ??i) induced potential test (see Clause 16.3.3); ??ii) lightning impulse tests (see Clause 16.3.4); ??iii) switching impulse tests (see Clause 16.3.5); and ??iv) loss and impedance tests (see Clause 16.4). i) A new tank pressure test (Clause 16.9) and gas accumulation test (Clause 16.10) have been included. j) A new clause on HVDC converter transformers has been included (see Clause 25). k) A new clause on transformers with high-temperature insulation has been included (see Clause 26). l) Table 10 has been revised to include a tolerance for load losses. m) A summary table of tests specified in this Standard has been included (see Table 13). Scope 1.1 This Standard, except as noted in Clause 1.2, applies to all liquid-filled transformers, autotransformers, booster transformers, load-tap-changing transformers, grounding transformers, phase-shifting transformers, series-voltage regulators, and shunt reactors. Note: The term "transformer(s)" in this Standard refers to the overall unit and not just to the electrical components implied by the definition. 1.2 This Standard does not apply to the following: a) distribution transformers (see CAN/CSA-C2.1 and CAN/CSA-C2.2); b) instrument transformers (see CAN/CSA-C60044 series and CAN/CSA-C61869 series); c) dry-type transformers (see CSA C9); d) pad-mounted transformers (see CAN/CSA-C227 Series of Standards); e) submersible transformers (see CSA C301 Series of Standards); f) three-phase network transformers (see CSA C199); and g) rectifier transformers, welding transformers, furnace transformers, starting transformers, testing transformers, or current-limiting reactors. Note: In the above list, the pertinent CSA Group standard number has been noted where such exists. Where no CSA Group standard exists, this Standard may be used insofar as it applies. 1.3 This Standard does not include energy efficiency requirements. For such requirements, see CSA C802.3 for maximum losses for power transformers up to 10 MVA. 1.4 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. 1.5 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 | 105 |
| Edition |
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | CSA C88:16 (R2021) | Power transformers and reactors | 2016-01-01 | 표준 |
| 2 | ASTM C88-13 | Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate | 2013-08-01 | 구판 |
| 3 | ASTM C88-05 | Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate | 2005-07-15 | 구판 |
| 4 | ASTM C88-99a | Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate | 1999-03-10 | 구판 |
| 5 | ASTM C88-76 | Standard Test Method for Soundness Of Aggregates By Use Of Sodium Sulfate Or Magnesium Sulfate | 구판 |
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