If there is no safety valve, blindly raise the temperature of the magnet wire, such as 180 ℃, 200 ℃, or even 240 ℃, the probability of explosion will be higher. This is because the winding temperature is getting higher and higher, it will produce saturated steam to provide higher temperature, more heat, will lead to higher and higher vapor pressure, but increased the risk of explosion.
If there is no safety valve, must not simply use the method to improve the temperature of the wire temperature.
In the field, once the concentration of sand is too high, the winding will heat over limit, the electromagnetic wire will quickly aging. After the sediment row, due to “overload injury”, the motor thermal load capacity will be greatly reduced, often in the back row of water, the winding short-circuit breakdown, causing the motor explosion. It is this explosion in the water illusion, confused people, for many years, can not find the reasons for the explosion of submersible pumps.