一区二区三区在线影院I天天插日日插I色婷婷天天干I国产成人精品久久久久蜜臀I欧美超碰在线I免费视频91I17婷婷久久wwwI免费观看一区I在线观看视频国产一区I日日狠狠

UL817是美規電源線的UL認證標準，電源線UL817認證需要進行絕緣電阻測試，優科檢測認證實驗室具備UL817全項檢測能力，接下來為大家介紹UL817電源線絕緣電阻測試方法。

UL817電源線絕緣電阻測試方法

標準依據： UL817（ 89.1 – 89.5）

檢測對象：電源線及電線組件

樣品數量： Normal：13 條；Tightened：20 條；Reduced：5 條。

測試方法及要求：

89 Insulation Resistance Test 

89 絕緣電阻測試

89.1 The insulation resistance of a fiing shall not be less than 100 megohms between:

89.1 以下各項之間的絕緣電阻不得小于100兆歐：

a)Live parts of opposite polarity,

a）極性相反的帶電部件；

b)Live parts and dead metal parts that are exposed to contact by persons or that may be grounded in service,

b）暴露于人員接觸或可能在使用中接地的帶電部件和死金屬部件；

c)Live parts and any surface of insulating material that is exposed to contact by persons or that may be in contact with ground in service.

c）帶電部件和任何暴露于人員接觸或可能與地面接觸的絕緣材料表面。

89.2 To determine compliance with 89.1,the insulation resistance is to be measured by a magneto megohmmeter which has an open-circuit output of 500 V or by equivalent equipment.

89.2 為確定是否符合89.1，應使用開路輸出為500 V的磁兆歐表或等效設備測量絕緣電阻。

89.3 The use of a megohmmeter between live parts requires no special clarification or instruction.However,in measuring insulation resistance to the surface of an insulating material,it is necessary to apply the electrode to the insulating material as described in 89.4.

89.3 在帶電部件之間使用兆歐表無需特別說明。然而，在測量絕緣材料表面的絕緣電阻時，需要將電極施加到絕緣材料上，如89.4所述。

89.4 A quantity of No.7 lead drop shot lapproximate diameter 0.10 inch(2.5 mm)]is to be placed in a container which is open at the top.After cord holes or other openings through which the shot can enter have been plugged carefully with a high-resistance insulating material,the fitting is to be immersed in the shot so that the shot serves as an electrode in contact with the surface to which the test is to be applied.

89.4 將一定量的7號鉛滴（近似直徑0.10英寸（2.5 mm））放在頂部開口的容器中。用高電阻絕緣材料小心地塞住彈丸可進入的線孔或其他開口后，將配件浸入彈丸中，使彈丸用作與測試表面接觸的電極。

89.5 All rubber parts are to be kept for at least 48 hours at room temperature before being subjected to the test mentioned in 89.1-89.4.

89.5 在進行89.1-89.4中提到的試驗之前，所有橡膠部件應在室溫下保持至少48小時。

電源線UL817測試報告辦理流程

1. 前期咨詢：提供需委托檢測項目、測試條件或測試標準；

2. 評估報價：根據檢測要求、樣品規格及參數評估報價；

3. 填寫委托書：向優科發起檢測申請，填寫委托書（會有專人指導填寫）；

4. 付款及提供樣品資料：按照協定報價支付費用，按要求提供足夠數量的樣品及產品資料；

5. 安排檢測：按委托要求對產品進行檢測；

6. 出具報告：依據檢測數據出具報告，將報告、發票及樣品回寄客戶。

優科檢測認證是獲得UL TPTDP免目擊測試實驗室授權的第三方UL檢測實驗室，可提供軟線組件和電源軟線UL817測試及UL認證服務。