Professional Diesel Generator Manufacturer Since 2009

For the safety, the operator should dress the acid-proof apron and wear the face mask or goggles. Once the electrolyte splashes on the skin or cloth, you should wash by plenty of water immediately.
Battery is without the electrolyte when has been sent to customer with the generator, so top up the electrolyte with correct proportion (1:1.28) before using. Unscrew the cover of battery compartment, inject the electrolyte smoothly until located between the two scale lines which are marked on the metal plate and as close as possible to the upscale line. Please do not use the battery immediately, and it should stand for a while about 15 minutes.
At the first time to charge the battery, pay attention on continuous charging time no longer than 4 hours, otherwise, it would cause damage to the battery life.

Safety regulations of the generator operators

Generators

1. The operators should have their own duty, in the working clothes and insulant shoes.
2. Check the flywheel and railing cover of generator and keep them normal.
3. Start only after checking and ensure the gear-box, clutch, governor, oil level, and all fasteners in normal, and the temperature of oil not lower than 20℃
4. Set all the system pipeline valves on the positions of “on work”
5. Check and fasten the link bolt of transmit mechanism
6. Check the condition of clutch handle pressure, and the position of overspeed safety device
7. Check that pressure of air bottle, and the position of overspeed safety device
8. Open the blow-down valve of air pump
9. Check the condition of the circulating water pump, oil pump, and fuel pump
10. Turn the field resistance into the position of maximum resistance and turn off the power switch.

Operation of starting and running

1. Open the pilot operated valve and start oil pump first if the diesel gen-set downtime is more than 24 hours,
2. Measure the insulation resistance of exciter and operation circuit and keep it meet the requirement if the diesel gen-set downtime is more than 7 days
3. Start the fuel pump to release the air in the pipeline, and check the voltage in the specified range or not. Start only when it is normal
4. Check the condition of the voltage. If the voltage is normal, push the start button until the diesel generator runs
5. Observe the indicator values of oil pressure gauge after the diesel engine starting. Stop the oil pump and close the scavenging pump discharge valve, insert the front clutch screw, when it rises above the predetermined value.
6. Do not touch the live parts, after the generator starts, which means the generator and all electrical equipments have been charged
7. Increase the diesel engine speed gradually and check before electrification, after the generator starts.
8. Check the condition of the generator running when adjusting the diesel engine speed gradually. The normal condition of the electric brush and the commutator ring set should be no beating, no spark and no abnormal sound.
   Adjust the output voltage and frequency of generators. The voltage should be stable, 380v±10v and 50Hz±5Hz.

1. Drain the engine oil and petrol in the machine.
2. Burning up the oil of the carburetor
3. Remove the sparking plug, and add 30 CC engine oil into the hole which is put in by the sparking plug
4. Draw the rope few times and install the sparking plug

Diesel generator power room must carries on the reasonable design, especially in ventilation and cooling. The requirements of air inlet and exhaust of diesel generating are very strict. It will enhance the efficiency of diesel generators by designing a good diesel generator room. And then how to reduce the temperature of diesel generator room:

1. When there is adequate water and the water temperature is low, the cooling treatment for the air of diesel generator power room is applying water as cooling medium. The requirements of design a water cooling owner station are as follows, the adequate natural water such as well water, spring water, river water, lake water and so on. The quality of water must be good and non-toxic, tasteless, non – disease bacteria, no corrosion for metals, and the contents of inorganic and organic substances such as sediment in the water should meet the standard requirements. The temperature difference must be more than 15℃ and no less than 10℃,If the water temperature is high, the temperature difference of air supply is small, then the air supply system must be larger, and the cost of investment and operation increased. The advantages of water cooling power station comparing with the other power stations are: the inlet and exhaust air volume is smaller, so the supply and exhaust duct is smaller; and the effect of the air temperature outside water power station is smaller, which ensures room air cooling in any season. The disadvantage is huge volume water. It will not be able to use this way of cooling when the project without enough low temperature water source.

Water cooling power station can apply water spray, which means air washing. Since the hot air in room touching with the spraying water directly, the heat exchanging effect is good; in the meanwhile, some harmful dust in the air of generator room can be carried off by spraying water. Also the water cooling power station adopts face type cooling, which is the heat exchanging on the metal cooler surface between the hot air in the room and the cooling water. The advantage of this cooling way is flexible to organize cooling system, configured according to the request, no or less occupying the diesel gen-set power station. For example, some closed cycle cooling diesel generator set is equipped with a head radiator. It cannot be used in a closed generator room. Lower the temperature of generator room by changing the cooling water of diesel generators into open system and putting the cooling water into the head radiator.

2. In the case of poor water source or diesel generator working in Summer, the temperature of air supply outside generator room meeting the requirement of generator room cooling, should apply to adopt air cooling or the combination of air cooling and evaporative cooling. To increase the air supply by low temperature air (5℃ lower than the requirements of generator room design) from outside the generator room, remove the residual heat in the room by air inlet and exhaust.

Air cooling power station does not require large amounts of cold water and cooling and ventilation system. The ventilation in room is simple and convenient. The volume of air inlet and exhaust is large, and the air is fresh and comfortable by changing many times per hour. However, the fan capacity of inlet and exhaust is large.

Evaporative cooling power station only requires small amount of water. According to the calculation of diesel engine power, in general it is 1.5×1.36kg/h per KW. It is no strict requirement for the water temperature, also reduces more than 50% air supply comparing with the air cooling power station, special suitable for the area which with poor water resource and high water temperature. With the experimental research work on evaporative cooling developing, evaporative cooling equipment is in the continuous improvement.

3. The artificial refrigeration should be used in the case of no enough water sources and air supply temperature not meeting the requirement of air cooling power station, which is the air cooler with cold source to remove the diesel generator room heat. The construction investment and operating costs of artificial refrigeration system are high. In the winter and transition season, the ventilation and cooling of power station should apply the cold air out side. So air cooling should be the main way to remove heat of power station. Diesel power station is running by automatically unit. The person on duty cannot enter the generator room after the compartment operation. The maximum allowable temperature of room cooling design can be 40℃

• Reason: too low speed of original motivation.

Solution: adjust the original motivation speed to the rated value

• Reason: too high loop resistance of excitation.

Solution: decrease the resistance of the field rheostat to increasing excitation current, and check the additional winding connection broken or wrong for semiconductor excitation generator.

• Reason: without the neutral position of exciter brush or too small pressure of the spring.

Solution: adjust the brush to the correct position, replace brush and adjust the pressure of spring.

• Reason: breakdown of some rectifier diode.

Solution: check and replace the breakdown diode.

• Reason: short circuit or ground fault of stator winding and excitation winding.

Solution: check the fault and remove it.

• Reason: too small contact surface of the brush, low pressure and poor contact.

Solution: polish the surface of the commutator by emery cloth or adjust the pressure of spring under the low speed if it is caused by unsmoothed commutator surface

• Reason: too high revolution speed.

Solution: reduce the hydraulic turbine hydrofoil opening angle and reduce the speed of revolution

• Reason: too large air gap of shunt reactor core.

Solution: change the thickness of reactor core shim, and adjust the air gap.

• Reason: short circuit of the field rheostat, and failure of the voltage adjustment.

Solution: find out the short circuit point and remove it.

• Reason: the galloping trouble of generators.

Solution: stop and deal with the accident emergency. What are excitation modes of small hydro generator, and what are their own excitation devices? There are two excitation modes of small hydro generators, excited and motivated modes, and motivated mode by DC exciter and excited modes by semiconductor excitation, such as silicon rectifier, SCR, three harmonic excitation and so on.

(1) Reason: misalignment between the generator rotor and turbine shaft center. Solution: adjust it again

(2) Reason: loose anchor bolts, or without a solid foundation, leading the uneven subsidence. Solution: tighten the screws, reinforce the foundation, and adjust it again.

(3) Reason: no round of the shaft neck bending. Solution: check the shaft bending, and adjust it.

(4) Reason: short circuit, grounding or connection error of the rotor excitation winding. Solution: check the ring and rotor winding insulation to ground by using DC voltmeter during the processing, and correct it,

(5) Reason: short circuit or grounded of the stator winding. Solution: shutdown the generator and check.

(6) Reason: non synchronization. Solution: shutdown the generator and checking immediately if the vibration is too strong.

(7) Reason: partial failure or lightning strike. .Solution: shutdown the generator and checking immediately if the vibration is too strong. 

The general reasons of generator voltage instable, and the solutions:

(1) Reason: wiring loose or brush loose. Processing: connect the wiring tightly, and adjust the brush

(2) Reason: failure or particial connecting wrong of automatical voltage regulator.

The growth potential of diesel generator sets in the market is quite considerable, especially in certain sectors and regions where demand continues to rise. Here are several key factors that explain why diesel generator sets still have strong market demand and growth potential:

1. Increasing Energy Demand
   As the global economy develops, particularly with the industrialization of developing countries, energy demand is steadily increasing. Diesel generator sets, as stable emergency power and backup power sources, are in continuous demand across many industries and sectors (such as construction, industrial production, data centers, oil and gas, agriculture, etc.). In remote areas where power supply is unstable or where the grid doesn’t reach, diesel generator sets remain the most important power source.

2. Growth in Industrial and Commercial Applications

   • Construction Industry: Construction sites often require mobile and temporary power supplies, especially in areas far from the power grid. With the growth of infrastructure projects, the demand for diesel generator sets in the construction industry continues to increase.
   • Agricultural Applications: Diesel generator sets are widely used in irrigation and power supply for agricultural equipment. Agricultural modernization drives the demand for efficient and stable power supply.
   • Oil and Gas Industry: Oil drilling, gas refining, and other operations often need to run under extreme conditions, and diesel generator sets provide reliable power support, especially in remote oilfields and gas fields.

3. Emergency Power Market
   With the increasing frequency of natural disasters and power supply instability, demand for diesel generator sets has surged in many regions. Particularly in extreme weather conditions (such as typhoons, earthquakes, floods, etc.), diesel generator sets serve as emergency backup power, ensuring the normal operation of key areas like hospitals, communications, and critical infrastructure.
   The global growth in emergency power demand makes diesel generator sets indispensable in post-disaster reconstruction, emergency rescue, and disaster prevention.

4. Supplement to Alternative Energy
   In some countries and regions, especially where the grid is unstable or power is insufficient, diesel generator sets are often the primary supplemental energy source. Although renewable energy (such as solar and wind power) is gradually developing, due to their intermittency and instability, diesel generator sets remain a reliable backup power source.
   Many local governments and businesses, as they transition to green energy, still rely on diesel generator sets as a transitional solution, particularly in industries where stable power support is needed.

5. Technological Innovation and Environmental Upgrades
   Modern diesel generator sets have undergone significant technological improvements in fuel efficiency, emission control, and noise levels. Many generator sets meet stringent emission standards (such as EURO V, EURO VI, etc.), reducing their negative environmental impact and enhancing market acceptance.
   As environmental regulations become stricter, manufacturers will continue to introduce more environmentally friendly, low-emission diesel generator sets to meet market demand.

6. Demand from Developing Countries and Emerging Markets
   In regions like Africa, Asia, and Latin America, where infrastructure is weak and power supply is inadequate, the demand for diesel generator sets is particularly strong. As these regions experience rapid economic growth and an increase in industrial and commercial activities, the demand for diesel generator sets will continue to rise.
   Additionally, as global trade and logistics expand, the demand for power in remote areas is also increasing, which further drives the development of the diesel generator set market.

7. Remote and Off-Grid Power Demand
   Many remote areas, temporary engineering projects, and offshore platforms are not connected to the grid, and diesel generator sets are the preferred solution for providing stable power to these locations. Particularly in fields like mining, exploration, and construction, diesel generator sets remain a primary energy source.

8. Economic Development and Urbanization
   As global urbanization accelerates, especially with the development and expansion of medium and small cities, the demand for stable power continues to rise. Diesel generator sets are increasingly needed for backup power in urban buildings, shopping malls, hospitals, and other facilities.
   Many emerging markets still have electricity infrastructure under development, which means diesel generator sets have significant potential in these markets.

9. Expansion of the Rental Market
   Due to the relatively high initial investment cost of diesel generator sets, the growth of the rental market has become another important factor. Many businesses choose to lease diesel generator sets for temporary power solutions, particularly in short-term projects and special needs scenarios. The diesel generator rental market is growing rapidly and has become an emerging growth point.

10. Key Role in the Energy Transition
    During the global energy transition, although renewable energy sources like solar and wind are gradually replacing traditional energy, diesel generator sets still play an important “bridge” role, particularly during the energy conversion period. They can provide reliable backup power, ensuring stable electricity supply during the transition phase.