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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。): M: k2 Y/ f3 E0 k0 \
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11.2.5 Windings
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The temperature rise of windings shall not exceed the values given in Table 3, items b) and d)
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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.) F; R+ f& `% h6 r9 d0 ?
3 l/ C# Q i% Z& {! B, \( b; MIn the case of windings providing protection against electric shock or where a fault could result in a fire hazard, the test is carried out three times and the winding is then subjected to the dielectric strength test of 10.3 without the humidity treatment of 10.2, starting within 1 min after the temperature rise measurement. No failure is allowed.
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& _* J* l" _" `* H: z– If the temperature is limited due to the operation of an integral non-resettable or a nonreplaceable protective device or due to the open circuiting of a winding, the temperature rises may be exceeded, but the test shall be carried out three times using new components.: G( Q/ X. S1 ^5 N' Y: A7 U8 J
8 y8 b0 P4 p" Z- [+ p3 CIn the case of windings providing protection against electric shock or where a fault could result in a fire hazard, the winding is then in each case subjected to the dielectric strength test of 10.3 without the humidity treatment of 10.2, starting within 1 min after the temperature rise measurement.
, g2 {1 h' y. U, h& r; fNo failure is allowed.4 N1 c9 ~, O7 x- M9 n
2 q* S/ ~% N' ~0 ?* n$ e0 t– Higher temperature rises are allowed for windings, provided a failure of their insulation cannot cause an electric shock hazard or a fire hazard and that they are not connected to sources capable of supplying power in excess of 5 W under normal operating conditions.
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l6 t& R8 U$ J– If a temperature rise value is exceeded and if there is doubt as to whether or not a hazard exists, the insulation concerned is short-circuited and the tests of 11.1 and 11.2.2 are repeated.
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+ ^! _% s5 o/ _4 @NOTE: If the insulation is incorporated in a winding in such a way that its temperature rise cannot be measured directly, the temperature is assumed to be the same as that of the winding wire.* r a; U' j8 N& H m1 \1 \) K* u4 ?
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