{"id":16821,"date":"2014-02-02T10:19:10","date_gmt":"2014-02-02T15:19:10","guid":{"rendered":"http:\/\/www.olino.org\/us\/?p=16821"},"modified":"2014-08-09T04:13:05","modified_gmt":"2014-08-09T08:13:05","slug":"lemnis-lighting-asia-endurance-test-120-cm-glass-led-tube","status":"publish","type":"post","link":"https:\/\/olino.org\/blog\/us\/articles\/2014\/02\/02\/lemnis-lighting-asia-endurance-test-120-cm-glass-led-tube\/","title":{"rendered":"Lemnis Lighting Asia – Endurance test 120 cm glass led tube"},"content":{"rendered":"

\"\"<\/a>Lemnis Lightings Asia has put a glass led tube in endurance test.<\/p>\n

This article presents the endurance test results. The test has run more than 11,000 hours.<\/p>\n

See also the results of the 0-hours test<\/a>.<\/p>\n

<\/p>\n

Summary Measurement Data<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n
parameter<\/th>\ninitially<\/th>\nafter 9,000 hrs endurance<\/th>\n<\/tr>\n
Color Temperature<\/td>\n5289 K<\/td>\n5631 K<\/td>\n<\/tr>\n
Luminous Intensity Iv<\/sub><\/td>\n670.8 Cd<\/td>\n664.6 Cd<\/td>\n<\/tr>\n
Beam Angle<\/td>\n123 deg<\/td>\n123 deg (tested after 7,200 hours, not again after 11,000 hours)<\/td>\n<\/tr>\n
Power P<\/td>\n21.7 W<\/td>\n21.5 W<\/td>\n<\/tr>\n
Power Factor<\/a><\/td>\n0.91<\/td>\n0.91<\/td>\n<\/tr>\n
Luminous Flux<\/td>\n2312 lm<\/td>\n2291 lm (computed using Iv at 11,500 and 0 hours and luminous flux at 0 hours)<\/td>\n<\/tr>\n
Luminous Efficacy<\/td>\n106 lm\/W<\/td>\n107 lm\/W<\/td>\n<\/tr>\n
CRI_Ra<\/td>\n95<\/td>\n94<\/td>\n<\/tr>\n
Coordinates Chromaticity Diagram<\/td>\nx=0.3380 and y=0.3487<\/td>\nx=0.3292 and y=0.3440<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Test duration and test environment<\/h3>\n

The lamp went into endurance test on 9 April 2013 and this intermediate reporting covers until 31 July 2014.<\/p>\n

During this period of time the lamp has seen the following variation in enviromental temperatures and humidity: the temperature close to the lamp varied between 8 – 30 deg C and the humidity betwen 25 – 80 %. The tube has been in a garage.<\/p>\n

Variation of lamp parameters<\/h3>\n

\"Screen<\/a><\/p>\n

The variation of the lamp parameters during the endurance test.<\/em><\/p>\n

See the explanation on the OliNo site<\/a> for more on the test method.<\/p>\n

The extrapolation to the 70 % level of the luminous flux is not possible when using the illuminance as a measure for the luminous flux (the level is basically constant).<\/p>\n

\"Screen<\/a><\/p>\n

Extrapolation of the illuminance.<\/em><\/p>\n

See the explanation on the OliNo site<\/a> for more explanation and the link to the ASSIST document for the method of extrapolation.<\/p>\n

The extrapolation of this data until 70 % of illuminance is reached goes to very high numbers of hours. We can extrapolate until 5 – 6 x the tested time, so the 70 % luminous flux quantity is expected to happen after 35,000 hours.<\/p>\n

Color change<\/h3>\n

The color change (change in color coordinates) is measured during the first 7,200 hours.<\/p>\n

\"\"<\/a><\/p>\n

Change in color coordinates during the endurance test.<\/em><\/p>\n

The color coordinates indicated with the red cross-hairs are the coordinates after 1000 burn hours. These are taken as reference. After 7,000 hours the color point remains inside an 2-step McAdams ellipse. This is a good result for constancy of color.<\/p>\n","protected":false},"excerpt":{"rendered":"

Lemnis Lightings Asia has put a glass led tube in endurance test. This article presents the endurance test results. The test has run more than 11,000 hours. See also the results of the 0-hours test.<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[32],"tags":[],"_links":{"self":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts\/16821"}],"collection":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/comments?post=16821"}],"version-history":[{"count":4,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts\/16821\/revisions"}],"predecessor-version":[{"id":19149,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/posts\/16821\/revisions\/19149"}],"wp:attachment":[{"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/media?parent=16821"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/categories?post=16821"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/olino.org\/blog\/us\/wp-json\/wp\/v2\/tags?post=16821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}