Photovoltaic Cables Are Hot for No Reason? Have You Checked All These Causes?

It is normal for PV cables to get hot during use, but some people find that the wires get hot even when they are not using the appliance. What is the condition now? Wires get hot at no load, XSD cable analysis, there are usually the following situations.

1, Photovoltaic cable short circuit

Short-circuit refers to the wire with power leakage, the same phase or relative zero contact phenomenon, the current increases and heat. For example, if the wire insulation layer is not good quality, long periods of immersion in water will leak; or broken wire insulation, contact with wet walls or steel will leak, resulting in increased resistance, the wire heats up.

2, The cable connector is not crimped well

If the wire connector contact is poor, under the action of the current, the resistance through the wire connector will increase, the wire will also heat up when no load.

3, Cable laying too dense, poor ventilation

According to the plumbing installation specifications, the threading pipe accounts for no more than 40% of the cross-sectional area of the threading pipe. If the wire alignment is too dense, the cross-sectional area of more than 40%, the heat generated during normal use is not easy to dissipate, heat storage tube wire without load. In the case of wire heating phenomenon.

4、There is a heat source near the photovoltaic cable

If the wire heating is caused by a nearby heat source (such as a gas stove), effective insulation measures must be taken between the two. Conclusion: In general, the wire will heat up when the load is running. The safe load capacity of the conductor is less than the rated power of the equipment. In this case, the only way to increase the cross-sectional area is to replace the wire; 5, the cable's wire quality is not qualified Another situation is that the quality of the wire is relatively low. The insulation value of the wire is low. Use a shaker to measure whether the insulation value can reach 0.5 megohm. If the insulation is too low, it will catch fire and generate heat between the zero wires. Simply replace the wire with a new one. If the insulation is too low, it will catch fire between the zero wires and generate heat.

Well, share so much about the photovoltaic cable for no reason to heat up a few reasons, you get it, if you still want to know more related news and information on the official website of our company XSD cable, the follow-up will continue to push more related news and information for you, please pay attention.