19 5.2 18 The last sentence of the first paragraph reads: "This combination of moisture, heat, and oxygen is the key factor that affects …" Suggest rewording to "Moisture, heat, and oxygen are the key factors that effect the rate …" Suggest rewording. It does not take a combination of factors to effect. Any one of them can do it. Yes Thaden Editorial Resolved in Draft 5A 20 5.4 18 The second paragraph is redundant to 5.3.2, which should be 5.4.1, if this is not 5.4. Delete paragraph and renumber subclauses correctly. Yes Thaden Editorial Could not identify referenced sections 21 5.4 18 Suggest deleting this subclause and putting related information in what was subclause 5.3.2. Delete this subclause and add related info to what was 5.3.2. Yes Thaden Editorial There has been no Section 5.3.2 since beore the 2006 verision 22 5.4 19 Figure 2 is redundant to 5.3.2 (new 5.4.1) Delete information Yes Thaden Technical There has been no Section 5.3.2 since beore the 2006 verision 23 5.4 19 The bullets would be more appropriate in 5.9. Only one bullet refers to Furan. In the paragraph there is a reference to section (subclause) 5.8, which should be 5.9. Move information as appropriate to 5.9 and fix reference to 5.8. Yes Thaden Technical Resolved 24 5.3.2 20 IEC Standard 61198 is referenced but is not in reference clause 2. Add reference to clause 2 Yes Thaden Technical Resolved 25 5.3.3 21 Figures numbers jump from 2 to 5. Fix figure numbers Yes Thaden Editorial Resolved 26 5.3.3 21 What does [xvii] refer to? Roman numerals appear elsewhere in this subclause. Fix as appropriate Yes Thaden Editorial Resolved 27 5.4.1 23 Cigre TB445 referenced but not listed in clause 2. Add to clause 2. Yes Thaden Technical TB 445 not referenced in Guide 28 5.4.1 24 IEC 60422 referenced but not listed in clause 2 Add to clause 2. Yes Thaden Technical Resolved
69 6.1.2 36 48 "a pressboard oil box" is incorrect. Use "an oil box" Darwin Editorial Resolved 70 6.4.6 60 52 Last sentence "..should be made following…" is incorrect. Use "…should be inspected following…" Darwin Editorial Resolved 71 6.6.4 66 1 Last sentence "..controls are found to…" is incorrect. Use "…controls be found to…" Darwin Editorial Resolved 72 6.7.1 66 42 Sentence "…should not exceed 12 month frequency…" is not correct Use "…should not use a 12 month frequency…" Darwin Editorial Resolved 73 6.7.3.2 68 4 Sentence "…journal bearing surfaces b the use…" is incorrect Use "…journal bearing surfaces by the use…" Darwin Editorial Resolved 74 6.7.3.3 68 18 Sentence "…constructed of using fluorocarbon…" is not correct Use "…constructed using fluorocarbon…" Darwin Editorial Resolved 75 6.8.1 69 21 Sentence "…should not exceed 12 month frequency…" is not correct Use "…should not use a 12 month frequency…" Darwin Editorial Resolved 76 7.1 70 43 Sentence "…from the active parts, is it becomes…" is incorrect Use "…from the active parts, it becomes…" Darwin Editorial Resolved 77 7.2 74 19 clauses 7.2.1 through 7.2.4 don't exist Delete the phrase "The criteria in…..etc". Darwin Editorial Resolved 78 Ex 7.3 78 32 Why get rid of clause concerning "Refrigeration Method" Include this clause Darwin Technical Unresolved 79 v Update list of participants No R_Asano General unresolved 80 4 4 §3 in the page Add "production disruption" to the list of potential costs. "The cost of a failure can vary greatly. Any analysis of potential costs of a failure should consider the possible repair or replacement costs of the transformer or failed component, environmental impact and clean-up costs, damage to adjacent equipment, production disruption, lost revenues and litigation costs, as well as any other site-specific potential costs. " No R_Asano General Added wording 81 4.1 4 §1 Additional to system requirements, regulations "To conduct a risk assessment of all the No R_Asano General Added wording
factor 148 5.4.1 23 Frquency Domain Spectroscopy (FDS) Cigré TB445 Guide for Transformer Maintenance(XX2) Is this section based on mineral oil or is it suitable for alternative insulating insulating liquid s? If the former, it should be so stated. And all references of “oil” should be changed to “mineral oil”, including Figures 4 and 5. Patrick McShane Editorial Unresolved 149 5.6 25 (FRA) A repeated font error seems to be inherent in the document’s bullets. The first bullets often have a different font than the following bullets. Maybe just on my screen computer perhaps? Patrick McShane Editorial Resolved 150 5.6.1.5 27 Analysis of Results Recommend rewording this paragraph for better clarity and grammar form. Resolved, 151 5.6.1.5 27 ..a FRA trace … “any” rather than “a”? Patrick McShane Editorial Resolved 152 5.6.1.5 27 ..preictability … predictability. This is due to typical frequency core effects, main…. Patrick McShane Editorial Resolved 153 5.7 28 ..a local breakdown… ..a “localized breakdown”? Patrick McShane Editorial Resolved 154 5.8 29 …converted to electrical signals. I would end the sentence after the word “surface”. The “.. converted to electrical signals” is superfluous. Patrick McShane Editorial Resolved 155 5.8.2.1 30 ..equal to 10 °C … Is this (and other sections’) “10 ºC limit based on 65 ºC rise rated transformers? What about forced oil and/or forced air ratings? And is it a valid limit for the new IEEE C57.154 Standard for transformers with High Temp. Insulation Systems and operating at elevated temperature? Patrick McShane Editorial Resolved, 10C is not based on the transformer rating 156 5.8.2.3 30 Tap changer I assume this pertains to LTCs external to the Patrick Editorial Resolved
main tank but not sure as most transformers also have DETC, often de-energized TCs when operating. Pls clarify if this section pertains to both or not. If pertains only to LTC, include “Load” in the title and in the paragraph. Should this section address both LTC and DETCs? McShane 157 5.8.3 31 Table 3 – Suggested temperature rise recommendations See coment 32 above. Patrick McShane Editorial Resolved 158 5.9 33 Figure 3 is an example of the information that should be provided with the samples. Samples collected from different locations should be separated and clearly identified so that analysis of the results will be logical. Samples should be protected from the environment. The use of sealed plastic bags is a method of separating samples. I would move this sentence to the paragraph above after the sentence “Wrap the sample in plastic or place in a sealable plastic. Separating and clearly identifying samples is a good practice but the practice, by itself, does not guarantee the analysis results will be logical. This info is redundant to previous paragraphs in this section. Patrick McShane Editorial Resolved 159 5.10 35 …real and are … I don’t understand the wording “more apparent than real” . Can this be make clearer? E.g. “…can be deceptive, thus difficult to locate and identify.” Patrick McShane Editorial Resolved 160 5.10.2 35 Investigated further. Changed because “fan guards” are not a type of noise. Patrick McShane Editorial Resolved 161 6 35 …to restore many … Restore seems out of place, perhaps the author meant” to attend to” Patrick McShane Editorial Resolved 162 6.1.1 36 At the time this guide was published, the only recognized method for evaluating Is this statement still correct or has some new technologies available since this statement Patrick McShane Editorial No, resolved
169 6.3.1 54 Make sure the test set-up is correct The use of punctuation is not consistent in this section so I changed them to be consistent and correct. Patrick McShane Editorial Resolved 170 6.4.1 57 … without oil backing … I am not sure what is “oil backing “. And stating “no risk” is perhaps an avoidable absolute. Does it mean that on the other side of the tank there is a volume of oil in contact with the metal where the weld is taking place Patrick McShane Editorial Unresolved, maybe define oil backing. 171 6.4.4 60 … typically used for smaller transformers .. Define smaller, add an appropriate range. Patrick McShane Resolved 172 6.4.6 60 The nitrile (Buna-N) or fluorocarbon (Viton .. Typically it is improper to include product trade names into the standards, especially when well known generic terms exist. Patrick McShane Resolved 173 6.5.2 62 There should be no noncontacts, commonly referred to as dead spots, or simultaneously normally open and normally closed contacts Recommend making this statement clearer. Patrick McShane Resolved 174 6.6.2 65 Electronic Temperature Monitor (ETM) for LTI .. Consider the ETM acronym to Section 3.2 Patrick McShane Rejected , ETM is only used within a two consecutive sentence place. 175 7.1 70 Off Line De-Energized Processing methods Please contact Paul Boman to determine if he has alternative instructions for alternative fluids, and if so, please add to this section. Patrick McShane Rejected, no alternative instructions available, just fluid handling methods. 176 7.1 71 The format for the bullet sequence is out of whack. Recommend using numerics 1-4 here. Patrick McShane Resolved 177 Below 7.2 74 Add a section here on dry-out by retrofilling with natural esters, which naturally reduce the moisture in the insulating paper and in the fluid itself via chemical processes? Patrick McShane Unresolved