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美标UL486A 拉力测试/ Test Values for Pull Force Test

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Pull Force Testing

1. Cut wire length to approximately 150mm (6”) long.

2. Strip one end to 13mm (.50”), or long enough so no wire insulation is under the insulation grip, or

loosen the insulation crimp so it has no grip on the insulation of the wire.

3. Terminate the appropriate terminal to the wire to the nominal crimp height.

4. Visually inspect the termination for bell mouth, wire brush and cut strands.

5. Set pull tester to 254mm per minute (1.00" perminute). For most applications, a higher rate will

not have a significant impact on the data. The slower rate prevents a sudden application of force

or jerking that snaps strands. Verify higher pull rates with data taken at 1.00” per minute.

6. If necessary, knot the un-terminated end of the wire (If insulation slips on wire).

7. Regardless of pull tester type, both wire and terminated end must be securely clamped. (Note:

Clamp terminal contact interface, do not clamp conductor crimp)

8. Activate pull test.

a. Record pull force readings. A minimum of five pull force measurements should be done to

confirm each set-up. A minimum of 25 readings should be taken for determining process

capability.

b. Compare lowest reading to minimum pull force specification.

抗拉测试

1. 把导线切割成150毫米(6英寸)左右长度。

2. 在一端剥开绝缘外皮,剥皮长度为13毫米(0.50英寸)或十足长,以至于在绝缘夹头

下不存在绝缘外皮,或松开绝缘外皮压接使其对绝缘外皮没有抓握力。

3. 比照额定压接高度把相应端子压接到导线上。

4. 视觉检查喇叭口、半导体刷和切割的芯线。

5. 把抗拉强度测试仪设置为每分钟25.4毫米(每分钟1.00英寸)。对于大多数应用场

合,更快的速度将不会对数据有伟大影响。较慢的速度可以防止突然施加力量或

抽动会拽断芯线。请验证更快的速度,但在每分钟1.00英寸速度下采集数据。

6. 如有必要,把导线未连接端子的那一端打一个结(若绝缘外皮在芯线上滑动)。

7. 无论采用何种类型的抗拉测试仪,测试时必须夹紧电线和端子。(注:测试时要夹

住端子接插界面,而不是夹住芯线压接处)

8. 进行拉力测试。

9. 记录拉力读数。每个压接操作设置至少要进行五次抗拉测量。至少要采集二十五个

读数以确定过程的能力。

10. 把最小读数与规定的最低拉力强度相比较。