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Low-voltage Diesel Generator Set

Low-voltage Diesel Generator Set Manufacturers Factory Suppliers

 

We specialize in producing all kinds of Low-voltage Diesel Generator Set products, mainly C90D5 65KW 72KW Low Voltage Open Type Diesel Generator Set, C80D5 3phases 58KW 64KW Low Voltage Diesel Generator Set, C55D5 40KW 44KW Low Voltage Self Excited Diesel Generator Set, etc.
Cummins Co., Ltd. was established in 1919. After years of operation, it has mature technical expertise, advanced process equipment, extensive production experience, and a complete service system.
We have established long-term cooperative relationships with customers around the world, allowing customers around the world to buy high-quality products and enjoy excellent customer service.

 
Company Advantages
 
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Well-Experienced
Cummins Co., Ltd was established in 1919, with more than 100 years of manufacturing experience, creating many successful cases and can provide customers with perfect solutions.

02/

Advanced Production Equipment
We are a full-service company providing complete design, R&D, production and sales services. Our production workshop is equipped with the most advanced equipment.

03/

High-quality Products
The company is committed to producing high-quality products that meet customer's standards. The company uses advanced technology and equipment to ensure consistency in the quality of its products.

04/

24-hours Online

We have an experienced and professional customer support team to provide flexible service to customers around the world, giving full support from product design to marketing. Our multi-lingual sales staff will provide you with 24/7 hours online service, and use their rich industry experience and powerful product database to solve your doubts about product specifications, usage and design.

05/

A Global Supply Chain
We are present globally, backed by local customer service, and a strong sales representatives network. Our logistic hubs with large storage capacities located close to our customer facilities (Europe, Americas, Asia Pacific) ensure short time deliveries.

06/

Competitive Price
We have professional sourcing team and cost accounting team, stive to reduce cost and profit and provide you a good price. Our pricing policies are designed to offer affordable options while not compromising on quality. We also can offer different discounts based on your order quantity.

Introduction to Low-Voltage Diesel Generator Set

 

A low-voltage diesel generator set is a generator that uses low voltage, which is usually between 100 and 600 volts. In the United States, low voltage systems are typically between 50 and 600 volts.
A low-voltage diesel generator set is a generator with a voltage below 1kV and a power of up to 5MW. Diesel generators can produce a low-voltage electrical output of 110 volts to 600 volts in alternating current.
Low-voltage generators are suitable for projects that have a guaranteed power supply at the end, where the capacity is not large. They can be used to supply continuous, standby, or emergency power for cargo ships, supply vessels, offshore platforms, and other vessel types.

 

Cummins 15kw 1875 Kva Diesel Generator Set

 

Advantages of Low-Voltage Diesel Generator Set

Low-voltage Diesel Generator Set systems have several advantages, including:


More common: Low-voltage Diesel Generator Sets are more common and manufactured in larger volumes than medium voltage generators. This means that low-voltage diesel generator sets may have shorter lead times and parts are often more readily available.


Lower costs: Using low voltage electrical devices can lower costs.


Improved energy efficiency: Running a generator at a low load means that it is operating below its maximum capacity, which can result in better fuel efficiency.


Safer: Lower voltage devices are typically safer and require less insulation.


Battery powered: Lower voltage systems may be powered by batteries.


Lower noise and vibration: Variable speed diesel generators often operate at lower RPMs (revolutions per minute) during periods of low load, resulting in reduced noise and vibration levels.


Low maintenance: The equipment can be maintained by electricians and/or mechanics; no specialist is required.

 

Types of Low-Voltage Diesel Generator Set

 

Low Voltage Open Type Diesel Generator Set
An low-voltage diesel generator set is a diesel generator that is mounted on a metal frame or structure that supports the machine and auxiliary equipment. They are manufactured without a canopy, which is a large encasement that covers the diesel engine components. Canopies can also contain soundproofing materials and access doors.
Low voltage open type diesel generator sets are known for being versatile, durable, and fuel efficient. They also offer a reliable and uninterrupted power supply.
Low voltage open type diesel generator sets differ from closed type diesel generator sets in that they do not have a radiator or cooling fan device. This means that the unit cannot independently complete the cooling cycle process.
Low voltage open type diesel generator sets are generally less expensive than silent generators, which are equipped with sound-absorbing technology and an inverter system.

 

3-phase Low Voltage Diesel Generator Set
A 3-phase diesel generator set is a combination of a diesel engine and an electric generator that can produce equal amplitudes, frequencies, and 120° phase difference potential. 3-phase generators are mainly used for larger industrial power generation.
3-phase Low Voltage Diesel Generator Set produces substantially higher voltage and allows for far greater electrical loads than a single phase industrial generator will. Many sites now mandate the use of a 3 phase power generator simply because it can handle heavier load requirements.

 

Low Voltage Self Excited Diesel Generator Set
A low voltage self excited diesel generator set is a diesel generator set that uses a brushless, four-pole, single bearing, rotary field.
An excitation system is a way to supply a generator's field windings with a regulated DC current. This produces an output voltage for the field.
A self-excited excitation system, also known as a shunt system, is a standard feature on many AC alternators. It works by taking power for the AVR directly from the main stator winding.

 

 

Applications of Low-Voltage Diesel Generator Set

Road Construction: Low-voltage Diesel Generator Sets are commonly used in road construction projects, providing power for lighting, machinery induction generators, and tools. They enable efficient operation and ensure productivity even in remote construction sites without access to the electrical grid.


Airports: Airports use diesel generators to power runway lights, navigational systems, baggage handling systems, and security equipment. In case of a power outage, these generators kick in to maintain smooth operations and ensure the safety and convenience of air travel.


Marine Vessels: Marine vessels and ports require reliable electric power for various functions, such as communication systems, refrigeration, and cargo handling. Standby generators provide the necessary electrical energy to keep the marine industry running smoothly.


Agriculture: Standby and portable generators are widely used in agricultural settings, providing power for irrigation systems, farm equipment, and processing facilities. They ensure an uninterrupted power supply to support crop cultivation, power drip irrigation systems, livestock operations, and food processing.


Hospitals: Hospitals and healthcare facilities heavily depend on industrial generators to maintain critical operations during power outages or natural disasters. Generators in hospitals power life-saving medical equipment, lighting, HVAC systems, and other essential functions, ensuring uninterrupted patient care.


Data Centers: Data centers house servers and IT infrastructure that requires a consistent and reliable power supply. Standby generators in data centers act as backup power sources, safeguarding against potential disruptions and minimizing the risk of data loss.

Cummins C150D5B Three Phased Diesel Power Generator

 

Component of Low-voltage Diesel Generator Set

 

A low-voltage diesel generator is actually a machine that converts mechanical energy (produced by an in-built combustion engine) into electrical energy. There are different components of the low-voltage diesel generator that work in synergy to produce electricity. Some of these essential components of a power low-voltage diesel generator include:


Engine – Being the primary component of the generator set, the engine supplies the mechanical energy which is later transformed into electrical power. As a matter of fact, the power output of these low-voltage diesel generators is directly proportional to its engine's size.


Alternator – This is another key component of a low-voltage diesel generator that uses the mechanical input supplied by the engine and converts it into electrical output. An alternator includes a rotor that produces a magnetic field to eventually generate some alternating current. This is why the rotor is referred to as the main part of the alternator.


Fuel System – This component stores and supplies the fuel to the generator. In general, a fuel system can easily keep a 62.5KVA silent generator running for about 6 to 8 hours.


Lubricating System – This unit ensures the smooth functioning of different parts of a generator. This is why it is recommended to keep a proper check on the lubricating system of the generator to avoid any malfunctioning.


Control Panel – This unit not only includes the Start/Stop button but also contains indicators for various parameters like current, voltage, and frequency. You can easily operate your 2.5KVA portable generator through its control panel.

 

Maintenance Tips for Low-Voltage Diesel Generator Set

 

 

Here are some maintenance tips for a low-voltage diesel generator set:


Lubricate the system: Check the generator's lubricating system to prevent malfunctioning.


Check the spark plug: Use an ignition spark tester to check for damage or wear.


Check the oil level: Check the oil level and pressure regularly and replace the oil and filter as recommended by the manufacturer.


Clean the air cleaner: After 500 hours of engine running, service the air cleaner with a filter element made of special highly porous cardboard.


Fill up the petrol tank: Diesel engines are designed to work when the fuel tank is full. If the generator runs out of gas, it can shut down and damage the engine's fuel pumps and other parts.


Inspect the exhaust system: Regularly inspect the exhaust system for leaks or damage. Repair any leaks or damage immediately.


Maintain cleanliness: Keep the diesel engine clean to prevent damage to the components. Dirty diesel can also impair efficiency and shorten the road life.

 

 
Certifications

 

We have various technical certifications. The quality of our products is highly praised by customers.

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Our Factory

 

We have a fully automatic CNC production line, and are committed to providing customers with the best products and services.

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Frequently Asked Questions

 

Q: What Is A Low-voltage Diesel Generator Set Used For?

A: There are various different ways in which a generator can be used from being a backup power source for businesses in need to providing your home with power during an emergency power outage.
No matter what you feel you need your generator for, it is vital that you never find yourself in a situation where you are in need of a generator without having one as this can be detrimental to business productivity and your home power.

Q: Why Diesel Generator Set is so important?

A: Diesel gensets provide an excellent solution to the problem of power outages. These generators are designed to supply power to buildings during blackouts or insufficient grid supply. The gensets run on diesel, readily available and more accessible to store than other fuel types. Diesel Generator Sets are also relatively easy to install and maintain, making them popular among commercial building owners.
Diesel Generator Sets have many advantages over other types of generators. They provide reliable power backup for extended periods, making them ideal for large commercial buildings with high power demands. They are also cost-effective compared to other fuel types, such as natural gas or propane. Diesel Generator Sets are also highly efficient, making them ideal for large commercial buildings. They consume less fuel, emit fewer pollutants, and have a longer lifespan than other types of generators.

Q: What type of voltage is provided by the diesel generators?

A: The diesel generators are capable of providing both AC and DC voltages. However, AC voltage generators are more common compared to DC voltage generators.

Q: What is the difference between High-voltage Diesel Generator Set and Low-voltage Diesel Generator Set?

A: The differences in parameters and performance between high-voltage diesel generator sets and low-voltage diesel generator sets are mainly reflected in the generator part and distribution system part.
Differences in volume and weight
High-voltage generator sets use high-voltage diesel generator sets, and the increase in voltage level makes their insulation requirements higher. Correspondingly, the volume and weight of the generator part are larger than those of low-voltage units. Therefore, the overall body volume and weight of a 10kV generator set are slightly larger than those of a low-voltage unit. There is no significant difference in appearance except for the generator part.
Differences in grounding methods
The neutral grounding methods of the two generator sets are different. The 380V unit winding is star connected. Generally, the low-voltage system is a neutral point direct earthing system, so the star-connected neutral point of the generator is set to be withdrawable and can be directly grounded when needed. The 10kV system is a small current earthing system, and the neutral point is generally not grounded or grounded through grounding resistance. Therefore, compared to low-voltage units, 10kV units require the addition of neutral point distribution equipment such as resistance cabinets and contactor cabinets.
Differences in protection methods
High-voltage generator sets generally require the installation of current quick break protection, overload protection, grounding protection, etc. When the sensitivity of current quick break protection does not meet the requirements, longitudinal differential protection can be installed. When a grounding fault occurs in the operation of a high-voltage diesel generator set, it poses a significant safety hazard to personnel and equipment, so it is necessary to set up grounding fault protection. The neutral point of the generator is grounded through a resistor, which can limit the fault current within the allowable damage curve of the generator, and the generator can operate with faults. Through grounding resistance, grounding faults can be effectively detected, and relay protection actions can be driven. If necessary, differential protection should be installed for high-voltage diesel generator sets. Provide three-phase current differential protection on the stator winding of the generator. By installing current transformers at the two outgoing terminals of each coil in the generator, the current difference between the incoming and outgoing terminals of the coil is measured to determine the insulation condition of the coil. When a short circuit or grounding occurs in any two or three phases, fault current can be detected in both transformers, thereby driving protection.
Differences in output cables
Under the same capacity level, the outlet cable diameter of high-voltage units is much smaller than that of low-voltage units, so the space occupation requirements for outlet channels are lower.
Differences in Unit Control Systems
The unit control system of low-voltage units can generally be integrated on one side of the generator section on the machine body, while high-voltage units generally require an independent unit control box to be arranged separately from the unit due to signal interference issues.
Differences in maintenance requirements
The maintenance requirements for high-voltage generator units in various aspects such as the oil circuit system and air intake and exhaust system are equivalent to those of low-voltage units, but the power distribution of the units is a high-voltage system, and maintenance personnel need to be equipped with high-voltage work permits.

Q: Are generators and alternators the same?

A: No, the generators are concerned with the conversion of mechanical to electrical energy. The alternators perform the action of converting mechanical energy into AC electrical energy.

Q: How to calculate the output required from the commercial diesel generator?

A: The power requirement from a commercial generator will be obtained by using the following formula: Power = Voltage * Current.

Q: What are the benefits of properly maintaining low-voltage diesel generator set batteries?

A: Battery maintenance offers various benefits, such as:
Long battery life: Regular maintenance of your generator battery can prolong its lifespan, which reduces the need for frequent replacements.
Lower costs: A well-maintained battery increases performance and reduces repair and replacement costs.
Better performance: Regular battery maintenance ensures that the battery provides reliable power to start the generator.
Continuous power supply: A well-maintained battery ensures that there is an uninterrupted power supply even during power outages.
By maintaining your low-voltage diesel generator set battery correctly, you can maximize its lifespan and improve the performance of your generator. This benefits you by providing reliable backup power when you need it the most.

Q: How to choose a high and low-voltage diesel generator set?

A: In the process of designing and selecting diesel generators, the choice between low-voltage and high-voltage units is often a key consideration.
Lowering the voltage while maintaining the generator set's power level increases the current accordingly. This higher current necessitates the use of more and thicker wires to transport power from the generator to the consumer end, resulting in higher costs. Additionally, as the physical distance between the generating plant and the consumer increases, so does the length of the wire required.
However, low-voltage diesel generator sets may be less expensive than high-voltage ones due to simpler manufacturing processes and shorter lead times. Whether considering the advantages or disadvantages of low-voltage units, these practical factors should be carefully considered in project design.
Low-voltage diesel-fired units are more suitable for projects where there is guaranteed power supply at the end, the capacity requirement is not large, and reliability is the primary concern. When parallelizing low-voltage diesel engines, the number of parallel units must be strictly controlled to prevent excessive load capacity on the parallel bus, which could increase overall project investment.
Low-voltage Diesel Generator Sets are especially suitable for expanding small rooms. Matching the expansion capacity with the diesel generator allows for seamless integration without major adjustments to the room's electrical architecture. This approach reduces costs and simplifies construction.

Q: What are the applications of low voltage open type diesel generator set?

A: Low voltage open type diesel generator sets have become an essential part of various industries due to their numerous applications. These powerful machines provide reliable backup power supply and are widely used in residential, commercial, and industrial settings.
One of the main applications of low voltage open type diesel generator sets is in the construction industry. Construction sites often require a continuous and uninterrupted power supply to operate various heavy machinery and tools. Diesel generator sets offer a reliable solution by providing a stable power source to keep the construction activities running smoothly. These generators can handle the power demands of construction equipment, including cranes, excavators, and concrete mixers, ensuring that projects are completed on time.
In addition to the construction industry, low voltage open type diesel generator sets are extensively used in the healthcare sector. Hospitals and medical facilities require a constant power supply to operate critical equipment such as life support systems, ventilators, and refrigeration units for storing vaccines and medications. Diesel generator sets act as a backup power source during emergencies or power outages, ensuring that essential medical services are not disrupted and patient care is not compromised.
Another important application of low voltage open type diesel generator sets is in the telecommunications industry. Communication networks rely heavily on uninterrupted power supply to maintain connectivity and enable effective communication. Diesel generator sets play a crucial role in providing backup power to telecommunication towers, data centers, and communication facilities, ensuring that communication networks remain operational even during power failures or natural disasters.
Low voltage open type diesel generator sets are also widely used in remote and off-grid areas where access to the main power grid is limited or non-existent. These generators provide a reliable and independent power source for remote communities, mining sites, and oil rigs, enabling them to carry out their operations efficiently.

Q: Here are some features of 3-phase low voltage diesel generator sets:

A: Three alternating currents: 3-phase low voltage diesel generator sets produce three alternating currents with different phases, separated by one-third of the cycle. The offsetting of the waveforms creates a rotating magnetic field that turns the generator's shaft and produces electricity.
Higher voltage: 3-phase low voltage diesel generator sets produce higher voltage and can handle greater electrical loads than single-phase industrial generators.
More flexible: 3-phase low voltage diesel generator sets can provide both single and 3-phase power, run industrial motors with higher horsepower, and branch power out for separate lines.
Efficient source of power: 3-phase low voltage diesel generator sets provide an efficient source of power at a relatively low cost.

Q: How Low Voltage Self Excited Diesel Generator works?

A: Here's how a low voltage self excited diesel generator works:
●As the generator rotates, the stator supplies input voltage to the AVR
●The AVR has sensors that monitor the output of the stator
●The AVR supplies power the exciter and is rectified to DC current
●The current is induced onto the stator for load output

We're professional low-voltage diesel generator set manufacturers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale low-voltage diesel generator set for sale here from our factory. Contact us for quotation.

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