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记得 我是谁不?我说了我换工作了的那个 又回来找你们帮忙了. i" D: n6 O, j4 O9 ^/ b
请帮忙翻译哈下面的测试0 I& }3 d p# @0 C
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Measurement of EBLF shall be made at 25度 using a lamp of the appropriate type and having not been lit for 24,first at V1 after 5s and 60s of the application of the d.c. voltage, then in steady conditions at Vmin
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' V+ _$ L6 _7 c: \: I& f3 W+ ^- cThe lowest value of the valuse measured at 60s and V1 or in steady conditions at Vmin shall be retained and shall reach at least the declared EBLF
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The value measured at 5s and V1 shall reach at least 50% of declared EBLF* u/ z) J b* e
: m& x# _1 D' A# DNote Replace 60s by 0.5s for ballasts declared for use in luminaires for high-risk task area lighting As declared EBLF must be reached after 0.5s measurements at 5s are not considered! Y- r9 O' g! p' q) E' @) ]
4 [2 p& {" K5 D$ p+ b @. tAny test circuit corresponding to that of figure 1 can be used to make the measurement of EBLF The luminous flux of a lamp is usually measured with an integrating photometer For ratio measurements of lumious fluxes a suitable illuminance meter is sufficient as there is a close ralationship between luminous flux and illumination at a fixed point% G4 s; a' {* K& e
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NOTE Other methods may apply for determining EBLF in particular methods which record permanently the luminous flux of the lamp associated to the ballast under test
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不晓得什么原因 翻译出来的一直不通
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