Power transformers are used very frequently in daily livelihoods, in order to ensure the normal use of electricity, the safety and stability of the power transformer is the key point, once the transformer has a problem of prevention, it is necessary to quickly find out the cause and deal with it, take the transformer short circuit, the damage caused by the insufficient treatment is very large, it is important to affect the operation of the power grid, what are the reasons for the formation of the transformer short circuit?
The reasons for the short circuit of the power transformer are as follows:
1. The external short-circuit work of the power transformer is frequent, and the cumulative effect of the electrodynamic force after repeated short-circuit current impact forms the softening of the magnet wire or the internal relative displacement, resulting in insulation breakdown.
2. The gap of the power transformer set is too large, and it is not advisable to form the insistence on the magnet wire, which adds hidden dangers to the transformer's ability to resist short circuit.
3. The preload of the winding of the power transformer is not properly controlled, and the wires of the usually transposed wires are misaligned with each other.
4. The power transformer acts on the uneven preload of each winding or each gear, and the beating of the wire cake is formed during the short-circuit impact, resulting in excessive bending stress on the magnet wire and deformation.
5. The winding of the power transformer is loose, the transposition or correction of the climbing is not proper, too thin, the formation of the magnet wire is suspended, from the perspective of the work damage direction, the deformation is more seen in the transposition, and it is more and more the transposition of the transposition wire.
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