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以下引自IEC 60065-2005
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11.2.5 Windings
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5 e9 O+ x& e! a# qThe temperature rise of windings shall not exceed the values given in Table 3, items b) and d)
% C0 _( ?! J' w2 a5 m"Fault conditions", with the following exceptions.
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" k) t! U7 p7 |– 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.0 t- M8 ]. e/ r4 p3 ^- g$ R7 p3 b: A
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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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– 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.
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9 x0 I, F- u) ]) O# n% S" tIn 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.6 y8 N# m# q' ^/ Y' l
No failure is allowed.
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– 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. * U: [, Q+ c8 K* w# i
* E4 J% H3 P/ o# h+ W; B– 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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6 f9 M6 a6 a$ k; zNOTE: 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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