In case of blowing of the fuse due to a short circuit, proceed as follows:
1. Connect the wires from the pilot lamp to the terminals of the fuse box at the place of
the fuse blown.
a) If there is a short circuit, the lamp will be lit with incandescence,
b) If the circuit and consumer are intact, the lamp will not be lit or will be lit dimly.
2. Connect the circuit from the fuse to the consumer and ensure that the lamp is not
lit or is lit dimly (in the presence of a switched on consumer in the circuit);
3. Fit a new fuse.
During the operation, the contact resistance between the fuse and its holders can in-
crease due to oxidization.
It results in increase of the voltage drop in the circuit and heating causing the circuit fail -
ure. The defect is detected by the disturbance of the operation of the consumer (reduc-
tion of the power) and heating of the fuse. Eliminate the defect by cleaning the holder
and fuse from the oxide film.
To Next Page
Loading...
