有問必答

本人從事UL有10多年的經驗,對工廠檢驗,UL申請和部分標準相對比較熟悉.在此希望各位同仁發表各自的問題,大家共同討論,為日后取得UL認證獲得經驗知識和建議.謝謝大家的參與.

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liaohuachang

LV.5

2006-06-30 21:05

就需要你這樣的人才,那我就先問了.
要確定一盞燈是屬于UL的哪個標準,主要是跟燈具中的哪些因素有關呢?請詳細解答一下,先謝過!

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vincent_yao

LV.2

2006-07-03 10:53

找到救星啦!
這位大俠,請問一下:

UL無極性雙扁直插在美國本土有使用嗎?什么時候使用?為什么有大細腳那么好的插頭還要這個?

期待您的答復!謝謝!

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rickycui

LV.2

2006-07-03 17:09

@liaohuachang

就需要你這樣的人才,那我就先問了.要確定一盞燈是屬于UL的哪個標準,主要是跟燈具中的哪些因素有關呢?請詳細解答一下,先謝過!

一般根據其使用條件判斷屬于哪個UL標準.例如:移動燈具一般屬于UL153或UL962,固定燈具一般屬于UL1598.例外是圣誕產品UL588,低壓燈UL2108,軌道燈:UL1574和水管燈UL2388.

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rickycui

LV.2

2006-07-03 17:16

@vincent_yao

找到救星啦!這位大俠,請問一下:UL無極性雙扁直插在美國本土有使用嗎?什么時候使用?為什么有大細腳那么好的插頭還要這個?期待您的答復!謝謝!

無極性的在美國本土還在使用.是使用極性還是非極性有最終電器產品所在的標準決定.分大小腳是為了防止極性插片插入插座的非極性插孔里面.

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kim40

LV.3

2006-07-03 17:42

I find some competitor UL products violate the standard, but they got the approval from Taiwan UL.
Any UL lab that have engineer more easily to sign the UL certificate?

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rickycui

LV.2

2006-07-04 10:03

@kim40

IfindsomecompetitorULproductsviolatethestandard,buttheygottheapprovalfromTaiwanUL.AnyULlabthathaveengineermoreeasilytosigntheULcertificate?

I am not sure if you are discussing UL962 Standard,which is effective only in recent years.If you have any evidence about violating the standard,you can provide it to UL China for appeal.I also can assist you.

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kim40

LV.3

2006-07-04 22:18

@rickycui

IamnotsureifyouarediscussingUL962Standard,whichiseffectiveonlyinrecentyears.Ifyouhaveanyevidenceaboutviolatingthestandard,youcanprovideittoULChinaforappeal.Ialsocanassistyou.

Standard is: UL 1310
Product is: linear transformer/adaptors
Our competitor applied UL certificate through Taiwan UL, its test report is much simple than Hong Kong UL, and shows no construction. Its end product exceeded the standard allowed temperature rise.

My questions are:
1. Is it good to apply through China UL?
2. What action China UL would take, if we provide samples which violated the standard?

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西西

LV.1

2006-07-05 12:14

請問產品在一年內都不將生產,是否可以申請取消UL的廠檢? 謝謝!

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dyuan

LV.2

2006-07-05 15:44

請問電源要過UL認證需要重點注意那些方面?

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renshan_lu

LV.4

2006-07-06 22:23

@西西

請問產品在一年內都不將生產,是否可以申請取消UL的廠檢?謝謝!

1年內不生產是否代表以后不生產,如果永遠停產則可申請取消.如果只是暫時停產,不需要取消,取消了再生產,要重新申請認證,很麻煩.

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hwfyhi

LV.3

2006-07-10 15:58

請問.我現在的工廠不生產了.現在變成了公司.原來有申請UL產品.現在UL要進行廠檢.請問.公司要準備什么樣的資料.和工廠的檢查有什么不同

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rickycui

LV.2

2006-07-10 16:24

@西西

請問產品在一年內都不將生產,是否可以申請取消UL的廠檢?謝謝!

建議申請ON CALL這種檢驗方式:即不用取消,又節省費用.具體操作,請與負責貴公司廠檢的UL檢驗員聯系辦理.

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rickycui

LV.2

2006-07-10 16:35

@dyuan

請問電源要過UL認證需要重點注意那些方面?

PWB上的電器間隙和變壓器的電器間隙和結構.

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rickycui

LV.2

2006-07-10 16:38

@hwfyhi

請問.我現在的工廠不生產了.現在變成了公司.原來有申請UL產品.現在UL要進行廠檢.請問.公司要準備什么樣的資料.和工廠的檢查有什么不同

一一個UL文件下至少要有一家合格的生產廠地.你說原來的工廠變成了公司,那我請問:生產設備還在嗎? 工商執照變更了嗎? 如果UL檢驗員例行公事時發現生產場地不存在了,會建議UL取消的.

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rickycui

LV.2

2006-07-10 16:39

@kim40

Standardis:UL1310Productis:lineartransformer/adaptorsOurcompetitorappliedULcertificatethroughTaiwanUL,itstestreportismuchsimplethanHongKongUL,andshowsnoconstruction.Itsendproductexceededthestandardallowedtemperaturerise.Myquestionsare:1.IsitgoodtoapplythroughChinaUL?2.WhatactionChinaULwouldtake,ifweprovidesampleswhichviolatedthestandard?

submit your evidence to UL NBK office.

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ul60065/60950

LV.2

2006-07-10 18:04

@kim40

Standardis:UL1310Productis:lineartransformer/adaptorsOurcompetitorappliedULcertificatethroughTaiwanUL,itstestreportismuchsimplethanHongKongUL,andshowsnoconstruction.Itsendproductexceededthestandardallowedtemperaturerise.Myquestionsare:1.IsitgoodtoapplythroughChinaUL?2.WhatactionChinaULwouldtake,ifweprovidesampleswhichviolatedthestandard?

sure,different engineer have different understanding on standard.

More experience engineer have more flexiable report, it happen in every certification body

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rickycui

LV.2

2006-07-11 10:43

@ul60065/60950

sure,differentengineerhavedifferentunderstandingonstandard.Moreexperienceengineerhavemoreflexiablereport,ithappenineverycertificationbody

I can not agree with you.There is no construction discription and temperature exceeded allowed T rise.It failed T test. UL Listing Mark shall not be authorized to use.

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