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Mobile WebSiteExplosion-proof distribution box is the total circuit of all users of a circuit distribution box. In the use of the process will always be some failure, then in the event of failure to how to deal with this? This article describes in detail the explosion-proof distribution box line failure and processing methods.
Explosion-proof distribution box troubleshooting program which?
Explosion-proof distribution box common faults:
1, the failure of product quality caused by the transformation of the rural power grid at the time due to the demand for a large number of distribution boxes, construction period is short, the distribution box factory needs low-voltage electrical supply time and the number of urgent, and thus produced a product quality The requirements of the phenomenon is not strict, resulting in a number of products put into operation shortly after the failure.
2, explosion-proof distribution box electrical appliances caused by improper selection of the AC contactor capacity in the manufacture of the choice is not very appropriate for different outlet circuit with the same capacity to install the AC contactor, and did not take into account the three-phase load imbalance , And can not be part of the outlet contactor current rating in the normal selection model based on the increase in a current level selection, resulting in the summer high temperature season running AC contactor burned out of the situation.
Explosion-proof distribution box handling program:
1, the use of protective circuit to prevent the distribution box power supply external circuit failure occurred.
2, select the energy-saving AC contactor products, and pay attention to the AC contactor coil voltage and the selected residual current protection device connected to the corresponding terminal, pay attention to the correct load matching.
3, the distribution box selection of low-voltage cable, cable selection should meet the technical requirements.
4, the distribution transformer low-voltage side of the total over-current protection fuse rated current should be greater than the low-voltage side of the distribution transformer rated current, generally take the rated current of 1.5 times the rated current of the melt should be the transformer overload factor And fuse characteristics.
