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Wirewound High Power Resistor - PHD Type

 水泥電阻 大功率電力型繞線電阻

大功率電力型繞線電阻 大功率電力型繞線電阻  大功率電力型繞線電阻 大功率電力型繞線電阻 

PDF File  Data Spec Wirewound High Power Resistor - PHDType

Cement FEATURE

  • Exceptionally small and sturdy, mechanically safe.  
  • Excellent electrical characteristic  
  • Tolerance of ±5% and ±10% are standard.  
  • Non-inductive type are available on request.  
  • Heat and flame resistance   
  • The materials used and the construction techniques ensure excellent   flame resistance, arc resistance and moisture resistance as well as self-extinguishing capabilities, They will withstand the most rigorous loading test.
  • As resistors in radio and television receiver, The hazardous conditions of  smoking and reheat can be completely prevented by the proper choice of power resistors.
  • For high resistance value, The winding core will be replaced by metal oxide film core (RS Type)
  • Applicable specifications: EIA RS-344 and EIA RC-649 


♦ Rating:  

  1. Power: HPD-10W   Resistance:  1Ω ~ 10K Ω
  2. Power: HPD-20W   Resistance: 1Ω ~ 20K Ω
  3. Power: HPD-30W   Resistance:  1Ω ~ 30K Ω
  4. Power: HPD-40W   Resistance: 1Ω ~ 40K Ω
  5. Power: HPD-50W   Resistance: 0.1Ω ~ 50K Ω
  6. Power: HPD-60W   Resistance: 0.1Ω ~ 60K Ω
  7. Power: HPD-80W   Resistance: 0.1Ω ~ 80K Ω
  8. Power: HPD-100W Resistance: 0.1Ω ~ 100K Ω
  9. Power: HPD-120W Resistance: 0.1Ω ~ 120K Ω
  10. Power: HPD-150W Resistance: 0.1Ω ~ 150K Ω
  11. Power: HPD-160W Resistance: 0.1Ω ~ 160K Ω
  12. Power: HPD-200W Resistance: 0.1Ω ~ 200K Ω
  13. Power: HPD-225W Resistance: 0.1Ω ~ 200K Ω
  14. Power: HPD-250W Resistance: 0.5Ω ~ 250K Ω
  15. Power: HPD-300W Resistance: 0.5Ω ~ 300K Ω
  16. Power: HPD-400W Resistance: 0.5Ω ~ 400K Ω
  17. Power: HPD-500W Resistance: 0.5Ω ~ 500K Ω
  18. Power: HPD-600W Resistance: 1Ω ~ 600K Ω
  19. Power: HPD-700W Resistance: 1Ω ~ 700K Ω
  20. Power: HPD-800W Resistance: 1Ω ~ 800K Ω
  21. Power: HPD-1KW  Resistance: 1Ω ~ 1M Ω
  22. Power: HPD-3KW  Resistance: 1Ω ~ 1M3 Ω

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Newsflash

LED慳電膽光效差異大

LED慳電膽光效差異大

 

 

LED慳電膽光效差異大

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103-4

東方網】不少家庭選用LED燈泡,認為更慳電,消委會委託本港獨立實驗室,測試市面十款家用LED燈泡的光效、光度及色溫等,其中 光效 愈高代表愈慳電,但測試發現各款光效差異頗大,表現最佳為「LKKM LK-BUL5W-G60」,光效最低為「宜家家居IKEA 202.603.51」,反映慳電表現相差近一倍。

有內地貨壽命低「聲稱」九成

十款家用LED燈泡售四十七至一百七十八元,其中三款整體評分最高獲五分,包括「曼佳美Megaman LG2509.5」、「飛利浦Philips 9290002497C」及「飛利浦Philips 9290002169C」;成績最差的「陽光牌Sunshine LGE-6E27D」」只得兩分。

光度方面,將十樣本使用三千小時,量度其輸出光度及計算光度跌幅,發現僅一樣本可維持原來光度,其餘九樣本光度都較初期弱,平均跌幅由百分之一至百分之廿八不等。

各燈泡聲稱壽命由一萬五千至五萬小時,但測試後有樣本相當「短命」。中國製的「陽光牌Sunshine LGE-6E27D」,標榜可用三萬小時,但六樣本在使用三千小時後光度跌幅逾三成,其中一樣本更在使用近二千四百小時已告失效,即該七樣本壽命少於三千小時,與聲稱的壽命相差九成。

機電署檢測各型號的安全效能,「萊德斯Ledus W,Cool White,E27」的防觸電保護及絕緣設計不合規格,柔光罩亦未能通過扭力測試,供應商指有關型號已停產。消委會今年首七個月接獲三宗投訴,涉及懷疑不安全及不當銷售手法。

來源: 東方網