Today, let’s talk about the switching problem of security power. First of all, we have three assumptions initial conditions, as shown in the figure (see Figure 1 for details). Initial conditions 1-3, condition 1 is the feeder switch 08, 09, 12, and 13 are in the closed position, initial condition 2 is the feeder switch 01, 02, and 03 are in the closed position, initial condition 3 is the feeder switch 07 and 10 are in the closed position, through the above initial conditions, we know that during the initial normal operation, the working PC1 section is running with security MCC1 section, the working PC2 section is running with security MCC2 section runs generator dual power switching logic copyright by: www.hxdlkj.com Switch logic 1: Jump on the 09 switch, the security MCC1 section loses power, the switching logic will instantly jump on the 07 switch and delay 11 switch. In this way, the security MCC1 section is powered by the working PC2 section, and a switching is completed. The switching between the two sections is generally between 1-2

Many customers have a headache about the operating noise of diesel generator sets. If you want to deal with this problem, the key is to find the source of the noise. So, let’s follow Haixing Power to see the common noise sources and categories. The main noise sources of diesel generator sets are the exhaust noise of diesel engines, intake noise, cooling fan noise, combustion noise, mechanical noise and electromagnetic noise of generators, and vibration during unit operation. 1) Mechanical noise The mechanical noise of a diesel engine is a noise stimulated by impact and vibration caused by the action of gas pressure and the inertia of the machine parts. Mechanical noise mainly includes piston strike noise, gear mechanism noise, air distribution mechanism noise, bearing noise, high-pressure oil pump noise, body vibration and noise caused by unbalanced inertia forces, etc. The mechanical noise of diesel engines increases rapidly with the increase of rotational speed. When operating at low speeds, mechanical noise is not important compared to other noises;

In the procurement of generator sets, many customers encounter identifying the new and old equipment, which is also a place where everyone is easily deceived. So here Haixing Dynamic has compiled some recognition skills, so you might as well take a look. According to the experience of some technicians and veterans, to identify the new and old levels of old diesel engines, one question, two look, and three tests, and the main method is to determine the newness and old diesel engines. Question 1: I ask about the purchase time, purpose and reason for the diesel engine, the repair situation and what major parts have been replaced, and what problems are there in use, so as to have a relatively comprehensive understanding of the machine. Second look: First, check whether the model is an out-of-date model, then look at the new and old degree of the diesel engine from the appearance, check whether the parts are complete and whether there is any damage. Three tests: It is to test the machine. The specific method for debugging the diesel generator set is 1. Rotate the crankshaft and make the oil injection pump supply oil.

As a professional diesel generator set manufacturer, Haixing Power has a say in the selection and purchase of diesel generator sets. There is a big difference in the selection and purchase of emergency diesel generator sets and commonly used generator sets. Let the staff talk to you about the basis for purchasing diesel generator sets in detail. Selection of emergency diesel generators Emergency diesel generators are mainly used in important places. Power outages instantly after an emergency or accident outage, and the emergency generator set is quickly restored and the power supply time is extended. This type of electrical load is called first-level load. Equipment, instruments and computer systems that have strict requirements on power outage time should be equipped with batteries or UPS power supply in addition to being equipped with generators. The operation of an emergency diesel generator has two characteristics: the first feature is for emergency use, the continuous working time is not long, and generally only needs to be continuously operated for a few hours (≤12H); the second feature is for backup use

Many users are not very clear about the basic knowledge of diesel generator sets. Haixing Power provides main answers to the doubts that customers have frequently reported. I hope it will be helpful to users and welcome everyone to come and communicate. copyright by:www.hxdlkj.com 1. What systems are included in the basic equipment of diesel generator sets Answer: Diesel generator sets mainly include six major systems, namely: (1) engine oil lubrication system; (2) fuel system; (3) control and protection system; (4) cooling and cooling system; (5) exhaust system; (6) starting system. 2. What is the relationship between apparent power, active power, rated power, maximum power and economic power of diesel generator sets? Answer: 1. The unit of apparent power is KVA, which is commonly used in my country to express transformers and UPS (UPS is an English Uninterruptible Power

When there is oil leakage, water leakage, and air leakage in the diesel generator set, it will cause the diesel generator to increase oil consumption, accelerate parts wear, power drop and other faults. The following are the treatment methods for oil leakage, water leakage, and air leakage in diesel generator sets: 1) Add a pad to treat leakage oil leakage at the diesel engine oil pipe joint, and add a layer of double-sided smooth thin plastic pads to both sides of the leak-proof gasket, and tighten it hard to prevent leakage. 2) Method for treating leakage of paint sheet liquid. Diesel engine oil tank, water tank, crankcase and other joints. You can soak the paint sheet in alcohol and apply the paint sheet liquid to clean the joints to treat leakage. However, the paint sheet is expensive and is usually only used in urgent situations. 3) The paper cushion in the oil pan, cylinder head, gear chamber cover, crankcase back cover, etc. of the diesel engine using oil leakage treatment method

The correct installation of generator sets is the prerequisite for its efficient operation. There are many contents involved in standard installation. You might as well take a look at the complete collection of diesel generator sets organized by the staff of Haixing Power. It is of great reference value. 1. Preparation work before unit installation: ⑴ When handling the unit, pay attention to the lifting ropes that should be tied in an appropriate position and lifted and placed lightly. When the unit is transported to the destination, it should be placed in the warehouse as much as possible. If there is no warehouse that needs to be stored in the open air, the fuel tank should be raised to prevent rainwater from soaking. A rainproof tent should be covered on the box to prevent sun and rain from damaging the equipment. Because the unit is large in size and heavy in weight, the transport route should be arranged before installation, and a transport port should be reserved in the computer room. If the doors and windows are not large enough, you can use the doors and windows to reserve a larger handling port. After the unit is moved in, then repair the walls and install doors and windows. ⑵ Before unpacking, dust should be removed first to check if the box is broken.

In order to extend the service life of the diesel generator set and its efficiency, in addition to seasonal maintenance, the daily maintenance of the diesel generator set cannot be ignored. Only by starting from the details can the diesel generator set be made good use of it. Let’s follow Haixing Power to take a look at the daily maintenance and emergency start-up procedures of diesel generator sets. copyright by:www.hxdlkj.com 1. Daily inspection and maintenance of emergency generator sets 1. An emergency generator no-load start test is carried out on Monday of the third week of each month. 2. Check and record the generator room and body every week. 3. The unit starts and runs for no less than 20 minutes each time to ensure lubrication of the unit's moving parts. 4. Check the tightening of the box wire, neutral wire and ground wire of the generator set 5. General inspection content 1) Check the oil volume of the fuel tank. 2) Check the oil level of the diesel engine. 3

Generator sets generally use synchronous generators (also known as electric balls) to convert the rotating mechanical energy of diesel engines into electrical energy. Various electrical equipment must rely on the power it emits to work, so the working performance requirements of synchronous generators are very high. The working principle of synchronous generators copyright by:www.hxdlkj.com Synchronous generators are manufactured based on the principle of electromagnetic induction. Modern alternators usually consist of two parts of coils; in order to improve the strength of the magnetic field, part of the coil is wound in the groove of the inner wall of a cylinder stacked with a metal sheet with good magnetic conductivity. This cylinder is fixed to the base and is called a stator. The coils in the stator can output induced electromotive force and induced current, so it is also called an armature. Another part of the coil of the generator is wound in the groove of a cylinder stacked with a strong magnetic permeability metal sheet in the stator cylinder, called a rotor. A shaft passes through

Every day, many users come to consult some diesel generator set failure problems. In order to let everyone know the causes and treatment methods of common faults, Haixing Power staff organized and shared them with everyone, hoping that they will be useful to everyone. Common fault introduction: 1. Why do the exhaust pipe sometimes drip oil when the generator load is too low? Since there are many places in the engine that use pressure seals, such as between the cylinder liner-piston-piston ring, and between the supercharger-supercharger rotor shaft, this seal usually only fully plays a role when the engine has about 1/3 of the load, and slight leakage may occur when the load is small. Therefore, foreign engine manufacturers generally emphasize in their manuals. If the unit is running under small load, as the running time continues, the following faults will occur: ①. The piston-cylinder liner is not sealed well, the oil will rise and enter the combustion chamber to burn.