IEC60884 图40插头插销绝缘套耐非正常热试验机

IEC60884 图40插头插销绝缘套耐非正常热试验机是广东安规检测有限公司根据标准IEC60884第28.1.2节及图40设计制造而成的。

GB2099.1标准要求：

28.1.2 插销带有绝缘护套的插头试样，要用图40所示的试验装置进行试验。该试验装置有一绝缘板A盒金属件B组成。A和B之间应有3mm的空隙。这一距离通过调节达到，应不影响插销四周的空气循环。绝缘板A的正表面应为圆形，并应是平的。其直径应等于有关标准活页中给出的插头结合面最大允许尺寸的两倍。绝缘板A的厚度应为5mm。

金属部件B应是黄铜制品，长度至少20mm,形状与有关标准活页规定插头的最大轮廓线一样。该金属部件的其余部分，应加工成通过传导方式加热被试电器附件，并且能将通过对刘和辐射对被试电器附件的热传递降到最低。在距离金属部件正面7mm处的对称位置上插入热电偶。如图40.金属部件B中的插销插孔的尺寸，应比有关标准活页给出的插销最大尺寸大0.1mm；插销间的距离应与有关的标准活页中给出的相同；插孔应有足够的深度。

注1：为便于清理插孔，金属部件B可以由两个以上的组件组成。当试验设备达到稳定温度时，将试样插入试验装置内，放置在最不利的水平位置上。稳定温度用热电偶进行测量，对额定电流2.5A的电器附件，该温度为（1205）；对额定电流更大的电器附件，该温度为1805.维持温度在相应的值下达3小时。然后，从试验装置取下试样，允许试样冷却到室温，再做室温下保持至少4小时。最后，试样插销的绝缘护套要按第30章的规定，但在环境温度线进行冲击试验和肉眼检查。

IEC60884-1标准要求：

28.1.2 The specimen of a plug with pins provided with insulating sleeves is tested by means of the test apparatus as shown in figure 40.
This test apparatus consists of an insulating plate A and of a metal part B: between these two
parts an air space of 3 mm shall be provided and this distance shall be obtained through means which do not impair the air circulation around the pins.
The front surface of the insulating plate A shall be round and flat and have a diameter equal to twice the maximum permissible dimension of the engagement face of the plug given in the relevant standard sheet.
The thickness of this insulating plate shall be 5 mm.
The metal part B shall be of brass and have, for a distance of at least 20 mm, the same shape as the maximum outline of the plug according to the relevant standard sheet.
The rest of this metal part shall be so shaped that the accessory under test is heated through it by conduction, and the heat transmission to the accessory under test by convection or radiation is reduced to a minimum.
A thermocouple shall be inserted at a distance of 7 mm from the front surface of the metal part in a symmetrical position, as shown in figure 40.
The dimensions of the holes for the pins in the metal part B shall be 0,1 mm larger than the maximum dimensions of the pins given in the relevant standard sheet and the distances between the pins shall be the same as those given in the relevant standard sheet; the depth of the holes shall be sufficient.
NOTE 1 The metal part B can be made of two or more component pieces, for hole cleaning purposes.
The specimens are inserted in the test apparatus, placed in the most unfavourable horizontal position, when the test apparatus has reached a steady temperature, measured by means of the thermocouple, of (120 ± 5) °C for accessories having a rated current of 2,5 A, and (180 ± 5) °C for accessories having a higher current rating.
The temperature is maintained at the relevant values for 3 h.
The specimens are then taken out from the test apparatus and are allowed to cool down to room temperature, at which they are maintained for at least 4 h.
The insulating sleeves of the pins of the specimens are then submitted to an impact test in accordance with clause 30 but made at ambient temperature, and subject to visual inspection.
NOTE 2 During visual inspection, no cracks on the insulating sleeves should be visible with normal or corrected vision without additional magnification, and the dimensions of the insulating sleeves should not have changed so as to impair protection against accidental contact.