If k = 115 from table 43.1, if s = 2.5 mm2 which is the csa of the copper conductors and i = 298.70 a
calculate the maximum duration allowed for the fault current to raise the cable temperature from the
normal operating temperature to the limiting temperature.
ze = 0.352
t =
type your text heres
230v
bs en 60898
16a type b
sfcu
immersion heater
3 kw
measured z, = 0.77 22
circuit run in copper conductors with a csa of 2.5 mm2
(show your answer to
two decimal places)
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submit
-leee recsa jil

If the thermal strain developed in polyimide film during deposition is given as 0.0044. assume room temperature is kept at 17.3 c, and thermal coefficient of expansion for the film and the substrate are 54 x 10^-6c^-1 and 3.3 x 10^-6c^-1respectively. calculate the deposition temperature.

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