產(chǎn)品安規(guī)設計之要求與測試ppt54頁)(參考版)
2025-01-13 03:16本頁面
【正文】 EX: DG104S. Building Networks for People ? TNV3 Circuits Tele 產(chǎn)品之相關規(guī)定 whose normal operating voltages exceed the limits for an SELV CIRCUIT under normal operating conditions on which overvoltages from Telemunication Networks are possible (AWG 26 can cover this test) TNV3 的線路是針對產(chǎn)品有直接連接至 outdoor tele 線路 , 且 其接受的電壓高於 SELV ( or 60Vdc),此類型產(chǎn)品必須做 overvoltage test, 但若有附 26號線 , 即可免做此項測試 。 凡是 TNV circuit 上的零 件、零件位置、 layout、線路一旦經(jīng)過承認後皆不可任意變更 . Tele 產(chǎn)品之相關規(guī)定 Building Networks for People ? TNV (Telemunication Network Voltage) Circuit A circuit in the equipment to which the accessible area of contact is limited and that is so designed and protected that, under normal operating and single fault conditions, the voltage do not exceed specified limiting values. ? SELV (Safe Extra Low Voltage) Circuit A SECONDARY CIRCUIT which is so designed and protected that under normal and single fault conditions, its voltages do not exceed a safe value ( or 60Vdc). Tele 產(chǎn)品之相關規(guī)定 相關名詞說明 Building Networks for People Tele 產(chǎn)品之相關規(guī)定 TNV Circuit 分為三種類型 ? TNV1 Circuits whose normal operating voltages do not exceed the limits for an SELV CIRCUIT under normal operating conditions, on which overvoltages from Telemunication Networks are possible (AWG 26 can cover this test) 總括來說 TNV1為直接連接至 outdoor的線路 , 但其接受的電 壓低於 SELV ( or 60Vdc), 此類型產(chǎn)品必須做 overvoltage test, 但若有附 26號線 , 即可免做此項測試 。25g的 實心鐵球 , 自 1300mm 高度垂直落 下進行撞擊測試 . Judgement : . . 1. 不可對設備之玻璃平臺處進行本測試 . . Building Networks for People 10. Heating Test 將待測產(chǎn)品零件接上 thermocouple,設定測試之電壓為電壓範圍 之 +6% , 10% or +10%, 10% 進行溫升測試 . 判定 : 不可超過該零件所宣告之額定溫度 , 計算公式如下 (假設 室溫為 25K, 產(chǎn)品之操作溫度為 50K) Winding Component Class B △ T = 95K10K(5025)K = 60K Capacitor max. absolute temp. 85℃ △ T = (8550)K = 35K Touchable surfaces metal △ T = 45K(5025)K = 20K Building Networks for People 10. Heating Test Building Networks for People 11. Abnormal Test 以溫升之測試方式 , 將產(chǎn)品 1) 開孔全部封閉 2) DC Fan locked (single fault) 測試至其溫度穩(wěn)定為止 . 然後再進行 HiPot Test , 不可有 Breakdown之情形 Building Networks for People 12. Electric Strength Test Primary to Ground : 1500Vac
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