12.4 The tool is operated:
– for the rated operating time for tools for short-time operation;
– on consecutive cycles of operation, until steady thermal conditions are established, for tools
for intermittent operation, the
″
on
″
and
″
off
″
periods being the rated
″
on
″
and
″
off
″
periods;
– until steady thermal conditions are established for all other tools for continuous operation.
12.5 During the test, protective devices shall not operate. The temperature rises shall not exceed the
values shown in Table 1, except as allowed by 12.6.
Sealing compound, if any, shall not flow out.
Table 1 – Maximum normal temperature rises
Parts
Temperature rise K
Windings
1)
, if the winding insulation according to IEC 60085 is:
– class A
75
(65)
– class E
90
(80)
– class B
95
(85)
– class F
115
– class H
140
– class 200
160
– class 220
180
– class 250
210
Pins of appliance inlets:
– for hot conditions
95
– for cold conditions
40
Ambient of switches, temperature limiters
2)
:
– without T-marking
30
– with T-marking
T-25
Rubber or polyvinyl chloride insulation of internal and external wiring,
including supply cords:
– without temperature rating
3)
50
– with temperature rating (T)
T-25
Cord sheath used as supplementary insulation
35
Rubber, other than synthetic, used for gaskets or other parts, the
deterioration of which could affect safety:
– when used as supplementary insulation or as reinforced insulation
40
– in other cases
50
Lampholders E14 and B15:
– metal or ceramic type
130
– insulated type, other than ceramic
90
– with T-marking
T-25
Material used as insulation other than that specified for wires and
windings
4)
– impregnated or varnished textile, paper or press board
70
– laminates bonded with:
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