UL插头的温升问题

113100748 · 发表于 2010-5-12 10:16

请问各位规友，UL 插头做温升测试时候，对配线的长度有什么要求吗？有，那具体是多长？

Andy.Yang · 发表于 2010-5-12 11:10

pls see below from UL817 for information, hope it can help u....

87 Temperature Test
87.1 General
87.1.1 The blade of a male fitting shall be capable of carrying continuously, without a temperature rise of
more than 30°C (54°F), a current equal to the ampacity of the cord, but not greater than the maximum
current for which the plug is rated. If the product employs a fuse, it shall be tested with the fuse in place
and the fuse shall remain intact following the test.
87.1.2 To determine that a male fitting complies with 87.1.1, the blades of the male fitting are to be
connected to each other by means of a short length (not more than 1-1/2 inches or 38 mm) of copper wire
with one end soldered to each blade. The wire is to be No. 14 AWG if the rated ampacity of the cord is
not more than 18 A, and is to be No. 8 AWG for a cord that is rated for higher ampacity. With the assembly
carrying a current equal to the acceptable ampacity of the cord (either direct current or alternating current),
temperatures are to be measured by means of thermocouples on the blades at the plane of the face of
the male fitting.
87.2 Joints
87.2.1 A joint in an adapter cord set shall be capable of carrying continuously, without a temperature rise
of more than 30°C (54°F), a current equal to the rating of the adapter cord set.
85.2.2 To determine that a joint complies with 87.2.1, the adapter cord set is to be caused to carry a
current equal to the rating of the adapter cord set; temperatures are to be measured by means of
thermocouples placed in contact with the joint adjacent to the conductor.

zy3618 · 发表于 2010-6-13 15:08

一般约38mm的铜线，铜线的规格应根据样品的电流而定，≦18A选14AWG，大于选8AWG铜线。

通最大额定电流、4小时，T≦30℃

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[插头插座] UL插头的温升问题

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