- What are the conditions for the parallel operation of two generator sets? What devices are used to complete the parallel work?
Answer: The condition for using parallel machines is that the instantaneous voltage, frequency and phase of the two machines are the same. The generator set is commonly known as "three simultaneous". Use a special parallel machine device to complete the parallel machine work. It is generally recommended to use fully automatic parallel cabinets. Try not to manually Paralleling. The success or failure of manual paralleling depends on human experience. The author boldly asserts with more than 20 years of experience in electric power work that the reliable success rate of manual paralleling of diesel generators is 0. The concept of manual paralleling is applied to the small power supply system, because the protection levels of the two are completely different.
- What are the reasons for the high water temperature alarm to shut down and make it unusable?
Answer: The water tank is leaking or the water is insufficient; the water temperature sensor is damaged; the water channel of the water tank is too dirty or the heat sink is too dirty.
The fan belt is worn too much and the pressure is insufficient; the water pump is worn and the pump water is insufficient; the opening angle of the thermostat is not enough and there is a phenomenon of jamming; the cylinder gasket is damaged and the water channel is connected to the cylinder; Requirements; engine overload operation; (including engine fatigue) excessive fuel supply.
- Why must the working compartment of the generator (electric ball) be kept clean?
Answer: If the diesel engine sucks in dirty air, the power will drop; if the generator sucks in sand, dust and other impurities, it will damage the insulation between the stator and rotor gap, and the severe one will cause burning.
- Which level of energy does electric energy belong to? What are the characteristics of alternating current?
Answer: Electric energy is a secondary energy source. AC is converted from mechanical energy, and DC is converted from chemical energy. The characteristic of alternating current is that it cannot be stored and is now used.
- Why is there water in the fuel tank and how to prevent it?
Answer: Qualified fuel will not contain impurities and water when it leaves the factory, but it will be more or less mixed with dust, dirt and water during transportation and storage; Fuel. The use and storage of fuel should pay attention to the following points: 1) The fuel should be stored in the fuel tank for more than 24 hours, so that the water and impurities can be precipitated before use; 2) Try to fill up the daily fuel tank after each work , so as to prevent the moisture in the air of the fuel tank from mixing into the fuel; 3) When filling the fuel, first wipe the funnel and the end cap of the fuel tank clean. The drain cock removes accumulated water and sediment