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以下引自IEC 60065-2005
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(异常测试时,变压器的温升可以超出限值,注意下面的红色字体和蓝色字体部分。)
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, \' X7 x# @+ _ x8 l) E2 }11.2.5 Windings/ ^; t2 A& z, _% E$ v+ _
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The temperature rise of windings shall not exceed the values given in Table 3, items b) and d)) e' H0 S1 D* y' v8 ?- u1 h
"Fault conditions", with the following exceptions.
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– If the temperature is limited due to the operation of replaceable or resettable protective devices, the temperature rises may be exceeded until 2 min after the operation of the device.) h" ]5 T- @7 z4 e+ x" G: ~/ ^
2 W4 B0 B6 ^1 T- j0 u( MIn the case of windings providing protection against electric shock or where a fault could result in a fire hazard, the test is carried out three times and the winding is then subjected to the dielectric strength test of 10.3 without the humidity treatment of 10.2, starting within 1 min after the temperature rise measurement. No failure is allowed.- g7 A) [1 U" k$ z
2 X n/ H# Y5 }' d6 `* @– If the temperature is limited due to the operation of an integral non-resettable or a nonreplaceable protective device or due to the open circuiting of a winding, the temperature rises may be exceeded, but the test shall be carried out three times using new components./ c$ ~% v7 k# r' R4 a
2 R% @' j$ w& lIn the case of windings providing protection against electric shock or where a fault could result in a fire hazard, the winding is then in each case subjected to the dielectric strength test of 10.3 without the humidity treatment of 10.2, starting within 1 min after the temperature rise measurement.
. A, R/ v$ E4 |1 jNo failure is allowed.
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6 l: `# ?# |/ [$ |– Higher temperature rises are allowed for windings, provided a failure of their insulation cannot cause an electric shock hazard or a fire hazard and that they are not connected to sources capable of supplying power in excess of 5 W under normal operating conditions.
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– If a temperature rise value is exceeded and if there is doubt as to whether or not a hazard exists, the insulation concerned is short-circuited and the tests of 11.1 and 11.2.2 are repeated.
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NOTE: If the insulation is incorporated in a winding in such a way that its temperature rise cannot be measured directly, the temperature is assumed to be the same as that of the winding wire.
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