1. Work grounding (1) Reduce electric shock voltage. For a system with an ungrounded neutral point, when one phase is grounded and the human body touches one of the other two phases, the electric shock voltage is more than 1.7 times the phase voltage; while for a system with a grounded neutral point, the electric shock voltage drops to close to or equal to the phase voltage. Voltage. (2) Quickly cut off the faulty equipment. For a system with an ungrounded neutral point, when one phase is grounded, due to the capacitance and insulation resistance between the wires and the ground, a current can flow.

The frequent occurrence of common faults in generator sets has caused headaches for many friends. Ultimately, the root cause of the faults lies in the operation. If you want to avoid equipment failures in time and maximize the effect, Haixing Power believes that everyone should take the lead in operating properly. Standardization and personnel training management. The diesel generator set should have a separate motor room. The door should be locked at all times, and non-staff members are prohibited from entering or exiting at will. This can prevent idlers from entering the machine room to change the setting state of the generator out of curiosity. For example, changing the automatic state to manual or accidentally touching a valve to change the valve state will cause unnecessary trouble and avoid affecting the diesel fuel during a power outage. The generator set starts normally. The operation and management personnel of the diesel generator set should keep abreast of the status of the unit at all times, whether there is a fault, whether each component needs to be cleaned, and whether the level, viscosity, and cleanliness of the cooling water and engine oil are normal. Only in this way can the diesel generator set be ensured when needed

Today we will talk about the switching problem of security power supply. First of all, we have three hypothetical initial conditions, as shown in the figure (see attached figure 1 for details). Initial conditions 1-3. Condition 1 is that feeder switches 08, 09, 12, and 13 are in the closed position. Condition 2 is that feeder switches 01, 02, and 03 are in the closed position. Initial condition 3 is that feeder switches 07 and 10 are in the closed position. From the above initial conditions, we know that during initial normal operation, the working PC1 section operates with security MCC1 section, and the working PC2 section operates with security MCC2 section. Generator dual power switching logic copyrigth by:www.hxdlkj.com Switching logic one: jump switch 09, security MCC section 1 loses power, switching logic will instantly jump switch 07, delayed switch 11. In this way, the security MCC section 1 is powered by the working PC section 2, completing a switch. The switch between the two sections is generally 1-2

Many customers have a headache when it comes to the operating noise of diesel generator sets. To deal with this problem, the key is to identify the source of the noise. Therefore, let’s follow Haixing Power to take a look at the common sources and classification of noise. The main noise sources of diesel generator sets are exhaust noise, intake noise, cooling fan noise, combustion noise, mechanical noise, electromagnetic noise of the generator, and vibration of the unit during operation. 1) Mechanical noise The mechanical noise of a diesel engine is caused by the impact and vibration of relatively moving parts caused by the gas pressure and the inertia of the machine parts. Mechanical noise mainly includes piston knocking noise, gear mechanism noise, valve train noise, bearing noise, high-pressure oil pump noise, body vibration and noise caused by unbalanced inertial force, etc. The mechanical noise of diesel engines increases rapidly with the increase of rotation speed. When operating at low speed, mechanical noise is not important compared with other noises;

When purchasing generator sets, many customers encounter the problem of identifying whether the equipment is new or old. This is also where people are easily deceived. So here Haixing Dynamics has compiled some identification techniques. You may wish to take a look together. According to the experience of some technicians and veteran operators, to identify the newness of an old diesel engine, we can adopt the method of first question, second look, and third test, with the test as the main method. First question: It is to ask about the purchase time, purpose and reason of sale of the diesel engine, the repair status and the main parts that have been replaced, and any problems during use, etc., in order to have a more comprehensive understanding of the engine. The second inspection is to first check whether the model is obsolete, and then look at the appearance of the diesel engine to see if it is new or old, and check whether the parts are complete and whether they are damaged. Third test: It is a test run. The specific method for debugging the diesel generator set is 1. Rotate the crankshaft to allow the fuel injection pump to supply fuel.

As a professional diesel generator set manufacturer, Haixing Power has a say in the purchase of diesel generator sets. There is a big difference in the purchase of emergency diesel generator sets and common generator sets. Let the staff explain in detail the basis for purchasing diesel generator sets. Selection of emergency diesel generators Emergency diesel generators are mainly used in important places. In the event of an instant power outage after an emergency or accident, the emergency generator set can quickly restore and extend the power supply for a period of time. This type of electrical load is called a primary load. Equipment, instruments and computer systems that have strict requirements on power outage time should be equipped with batteries or UPS in addition to generators. The operation of emergency diesel generators has two characteristics: the first characteristic is for emergency use, the continuous working time is not long, and generally only needs to continue running for a few hours (≤12H); the second characteristic is for backup

Regarding the basic knowledge of diesel generator sets, many users are not very clear. Haixing Power mainly answers the doubts frequently reported by customers. We hope it can be helpful to users, and everyone is welcome 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) oil lubrication system; (2) fuel system; (3) control Protection system; (4) Cooling and heat dissipation system; (5) Exhaust system; (6) Starting system. 2. What is the relationship between the apparent power, active power, rated power, maximum power and economic power of a diesel generator set? Answer: 1. The unit of apparent power is KVA, which is used in my country to express transformers and UPS (UPS stands for Uninterruptiable Power in English)

When the diesel generator set has oil leakage, water leakage, or air leakage, it will cause the diesel generator to increase fuel consumption, accelerate parts wear, reduce power, and other failures. The following are the treatment methods when oil leakage, water leakage, and air leakage occur in diesel generator sets: 1) Add pad to cure leakage. If there is oil leakage at the anti-leakage gasket of the diesel engine oil pipe joint, you can add a layer of double-sided smoothness on both sides of the anti-leakage gasket. The thin plastic pad can be tightened firmly to prevent leakage. 2) Leakage treatment method with paint chip liquid. If there is leakage at the joints of diesel engine oil tanks, water tanks, crankcases, etc., you can soak the paint chips in alcohol and then apply paint chip liquid to the cleaned joints to cure the leakage. . However, paint chips are expensive and are generally used only in emergencies. 3) Use oil to cure leakage of paper gaskets in the oil pan, cylinder head, gear chamber cover, crankcase rear cover, etc. of the diesel engine.

The correct installation of the generator set is the prerequisite for its efficient operation. Standard installation contains a lot of content. You may wish to take a look at the complete installation specifications of diesel generator sets compiled by the staff of Haixing Power, which is of great reference value. 1. Preparation work before unit installation: ⑴ When transporting the unit, attention should be paid to tying the lifting rope in the appropriate position and lifting it gently. After the unit is transported to the destination, it should be stored in a warehouse as much as possible. If there is no warehouse and it needs to be stored in the open air, the fuel tank should be elevated to prevent it from being soaked by rain. The tank should be covered with a rainproof tent to prevent it from being exposed to the sun and rain. Damage equipment. Due to the large size and heavy weight of the unit, the transport route should be arranged before installation, and a transport port should be reserved in the machine room. If the doors and windows are not large enough, you can use the location of the doors and windows to reserve a larger port. After the standby unit moves in, you can then build the wall and install the doors and windows. ⑵ Before unpacking, you should first remove dust and check whether the box is damaged or not.

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 we make good use of the diesel generator set. Let’s follow Haixing Power to take a look at the daily maintenance and emergency starting procedures of diesel generator sets. copyright by: www.hxdlkj.com 1. Daily inspection and maintenance of emergency generator sets 1. Conduct a no-load start-up test of the emergency generator on the third Monday of every month. 2. Inspect and record the generator room and machine body every week. 3. The unit should be started and run for no less than 20 minutes each time to ensure lubrication of the moving parts of the unit. 4. Check the tightness of the box line, neutral line and grounding line of the generator set. 5. Routine inspection contents 1) Check the amount of oil in the fuel tank. 2) Check the engine oil level of the diesel engine. 3