What should we do if the diesel generator set gets wet?

Diesel generator sets will inevitably encounter bad weather when they are used outdoors. Improper handling can easily lead to damp problems, especially when the motors of the generator set get damp, which has a great impact on the life and operation of the generator set. So how should we solve the drying problem after the motor is damp?
Reminder: After the generator set motor is damp, it must be dried in time. According to the capacity of the motor and the degree of dampness, there are two commonly used drying methods:
(1) Oven (furnace) baking method
Where conditions permit, put the motor as a whole (it is better to disassemble the stator and rotor)
The temperature rises gradually in the oven (furnace) for baking. The oven (furnace) should be ventilated. In order to take away the moisture in the motor, it is best to be a sandwich, the inner layer of the electric discharge machine, heating in the outer layer. The temperature of the inner layer is maintained at 90-100°C, and there should be no open flames, smoke and other flammable and corrosive gases. Generally, it is required to bake continuously for 8 to 18 hours, and the insulation resistance value of the motor can be measured several times until it reaches the specified value and is stable.
(2) Steady-state short-circuit current method
After the AC generator is damp, short-circuit the three phases in the outlet box, and then increase the generator speed to a temporary speed, keep it unchanged, and then adjust the excitation current to first make the stator short-circuit current reach 50% to 70% of the rated current Keep it for 4～5h, then increase the excitation current to make the short-circuit current reach 80%-100% of the rated value, keep the coil temperature below 85℃, measure the insulation resistance and temperature of the coil every 30min until the insulation resistance reaches The specified value well is stable.
With the increase in the degree of enhancement of diesel generator sets, the requirements of diesel engines on the cooling medium have also increased correspondingly, so how to choose cooling water?
When the diesel engine is working, the normal temperature of the cooling water should be maintained at 75~90℃. At this time, the diesel engine can produce the maximum power, the fuel consumption will be close to the economic state, and the degree of wear of the parts is also low. If the temperature of the cooling water is too high or too low, or the thermostat is removed without authorization, the function of the cooling system will be reduced or lost. Because the diesel engine is working, the fuel combustion will release a lot of heat energy, the gas temperature in the cylinder is as high as 1800~2000℃, and only 30%~40% of the heat energy produced by combustion is converted into mechanical energy, and about 20%~25% is cooled by the system take away. If the cooling system works abnormally and the cooling water temperature is too high or too low, it will not only affect the normal operation of the diesel engine, but even cause malfunctions and accidents. The cooling water should be slightly alkaline clean water, must not contain corrosive compounds, and the cooling medium should develop from cooling water to cooling liquid. The cooling system should use clean soft water, and the pH value of the cooling water should be controlled in the range of 8~11 to minimize the fouling and blockage in the cooling system to prevent affecting the cooling effect. In use, chemical agents should be used to clean the inside of the cooling system and diesel generator set to ensure good cooling circulation and normal heat dissipation.
In areas or seasons where the ambient temperature is higher than 5°C, in order to reduce or avoid the corrosion and scale accumulation of the cooling system on the body, the cooling water should be added with a suitable amount of anti-rust emulsion made of anti-corrosion oil. In areas or seasons where the ambient temperature is lower than 5℃, it is best to use antifreeze when a closed-loop cooling system is used. In the cold season, in order to facilitate the start of the diesel engine, you can add hot water of about 80°C into the cooling system, or warm up the lubricating oil in the oil pan before starting. After the work is over, when the temperature of the diesel engine drops to 50~60℃, open the water drain valves of the radiator and cylinder block to drain the water in the cooling system.

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Cummins, diesel generator set, dieselengine, Engine, generator set

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