表4.5.1.4-电流循环的试验电流
8. If test currents are not known, then, at room temperature:
Attach thermocouples to samples at a point on the under-side and just in front of the crimp.
Welding or epoxy is permissible. a. Apply 0.50 Amps to the circuit.
b. Allow the circuit to come to steady state temperature (At least 10 minutes.) c. Measure the temperature, and calculate the temperature rise.
If the temperature rise is less than the maximum temperature rise recommended by the
steps until that temperature is reached.
8.假如不知道电流循环的试验电流，（通过如下方法获得）则在室温下： 将热电藕附在压线脚前面的下端。焊接或环氧都是允许的。 a. 给电路施加0.50A
b. 持续通电达到温度稳定状态（至少10min） c. 测量温度和计算温升
假如温升低于供应商推荐值或55 C，那个小选哪个，然后再增加0.50A直到温度达到规定值。 9. The current at which the maximum temperature rise recommended by the terminal
9.如果所通的电流引起的温升达到供应商推荐值或55 C，（选更低的一个）该电流就是电流循环实验的试验电流。
10. An acceptable alternative to a, b, and c above is to perform the “Maximum Test Current
Capability” test identified in USCAR-2.
10.上述的a，b，c3项可以按照USCAR-2.中的最大电流能力试验来做。 11. Measure voltage drop after 2 hours ± 1 hour and at the completion of the test (200 hours ± 8
hours). The samples should be energized for a minimum of 30 minutes to allow for temperature stabilization. Measurements are taken between points B & C. (see Figure 4.5.1.4)
11.在2 ±1h后和200 ±8h后测量压降。样品应通电至少30min使得温度达到稳定。在B & C两点处测量（见图4.5.1.4）
12. Measure the voltage drop across the soldered sample.
12.测量焊接样品的压降，C点与焊接点之间的压降（焊接点在芯线压线脚上，靠近芯线压线脚后部）
13. Crimp interface voltage drop is equal to the voltage drop recorded in step 11 less the soldered sample value measured in step 12.
13.压接连接处的压降等于在第11步测量得到的压降减去在第12步测量得到的焊接样品的压降。
14. Record:
a. All voltage drop measurements, and all calculated resistance values. b. Average, low, and high resistance values for each data set. c. Description of samples. d. Conditions of test.
e. Instruments used, the date of last calibration, and when the next calibration is due. f. Soldered sample resistance value if applicable.
g. Temperature rise on at least one part in the nominal CCH group g. Observations. 14.记录：
a. 记录所有测量的压降和所有计算得到的电阻值 b. 每一数据组中的平均值，最小值和最大值电阻 c. 样品描述 d. 试验条件
e. 设备，最新校准日期和下次校准 f. 焊接样品的电阻（如适用）
g. 在基本芯线压接高度的样品组中至少有一个零件有温升数值记录 h. 观察结果
4.5.1.5 Acceptance Criteria 4.5.1.5接收标准
1. All samples within 3 consecutive crimp heights representing the lower, nominal, and upper
specification limits per the conductor crimp height tolerances of Appendix E, Table E-1 must
satisfy one of the following two acceptance criteria upon completion of the electrical current
cycling test (ECC)
1.所有在基本压接高度，最小值，最大值或其范围内（符合附件，表E-1）的样品经过电流循环试验后必须要求满足以下两个标准中的一个标准。
a. 最大允许的压接电阻=0.55毫欧姆或0.11x（p1+p2）/2d毫欧姆，取大值（允许是最初
计算出来的压接电阻的11倍）
b. 允许的电阻的变化量=0.33毫欧姆或0.0099x（p1+p2）/2d毫欧姆，（允许是最初计算
压接电阻的9.9倍），取最大值。
在这里p1=导体电阻率（按照国际退火铜标准，铜的导体电阻率为17.2） p2=端子基本材料的电阻率
d=与导体截面面积相同的圆的直径
（p1+p2）/2d基于端子和导线的几何结构和电阻率计算出来的理论电阻值 c.对于典型合金的计算值可参考附件D，表D-1，D-2 4.5.2 Accelerated Environmental Test 4.5.2加速环境老化试验 4.5.2.1 Purpose
This procedure describes the testing of electrical components when subjected to sequential environmental exposure.
4.5.2.1目的
该程序描述了连续环境暴露试验 4.5.2.2 Samples
A minimum of 10 terminal samples of each crimp height shall be tested. Data shall be obtained
and recorded for minimum, maximum and nominal production crimp heights. Minimum cable
length for samples is 150mm. 4.5.2.2样品
每一个压接高度至少试验10只样品。应该获取和记录最小，最大和基本压接高度的数据，样品中导线/电缆线的长度至少150mm。 4.5.2.3 Equipment 1. Micro-ohmmeter 2. Humidity chamber. 3. Forced air.
4. Temperature chamber.
5. An automatic temperature/humidity cycling chamber may be used as an alternative to items
2, 3, and 4 above. 4.5.2.3设备
1. 微欧计 2. 湿度试验箱 3. 气源
4. 温度实验箱
5. 可以采用温湿度试验箱代替上述2.3.和4的设备 4.5.2.4 Procedure
Complete the test procedure per figure 4.5.2.4 4.5.2.4步骤
按照图4.5.2.4执行试验程序
按照4.2段目测检查，如果要求和适用按照4.5.3测试干电路电阻 按照4.5.5进行热冲击试验 如果要求和适用按照4.5.3测试干电路电阻 按照4.5.4的温湿度要求 该后3段没有湿度要求 按照4.2段目测检查，如果要求和适用按照4.5.3测试干电路电阻
加速环境老化试验流程简图
4.5.2.5 Acceptance Criteria 4.5.2.5接收标准
1. All samples within 3 consecutive crimp heights representing the lower, nominal, and upper specification limits per the conductor crimp height tolerances of Appendix E, Table E-1 must satisfy one of the following two acceptance criteria upon completion of the electrical current cycling test (ECC)
1.所有在基本压接高度，最小值，最大值或其范围内（按照附件E-1的压接高度）的样品经过电流循环试验后必须要求满足以下两个标准中的一个标准。