今天给大家介绍下UL1977的overload测试
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Six representative devices
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Different Type designations within a single housing
Overload Test 过载测试
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Female device，针对female连接器
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Test condition
|
Current ( A ) |
150% rated current |
|
Potential ( V ) |
95~105% rated voltage |
|
Power factor |
0.75 ~ 0.80, only for ac |
|
Fuse ( A ) |
15 A |
rating-current < 30 A |
|
30 A |
rating-current > 30 A |
|
Insert and withdraw with current |
50 c, < 10 c/min |
判定结果：
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No any electrical or mechanical failure of the device nor pitting or burning of the contacts that would affect the intended function
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连接器电气或机械结构不失败，接触件的蚀损或灼烧不影响使用功能
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The grounding fuse not open during the test
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测试过程中接地保险丝不能断开
Exceptions,
不需要做过载测试的情况:
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A Type 0 device type0类型的产品
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A device is marked in accordance with “Not for current interrupting “ or “For disconnecting use only “ or with an equivalent statement,
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A female contact device interlocked with an integral switch or other means such that the circuit is opened before a mating male contact device can be inserted or withdrawn
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