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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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6 M( n) S0 Y" G' g3 O% b% R11.2.5 Windings# N- D" h$ U2 g' [0 d& q
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The temperature rise of windings shall not exceed the values given in Table 3, items b) and d)0 [8 c6 K" H5 c0 b9 f9 r
"Fault conditions", with the following exceptions.
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" a3 n1 w2 k4 M) s; g– 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.
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In 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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8 N8 Q2 P9 D1 A. P9 {( I– 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.. ]; p# S4 m5 Z$ v. e+ s
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In 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.
/ h) I2 p9 @( ~7 aNo failure is allowed.3 T/ H2 i$ Q J; Y
) r2 u' T j' e' g( a% E8 y7 E– 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.2 ~: {" V' \. b! b5 I: C
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