C Series 165 kVA DG Set 50Hz
- Bidirection Power
- Cummins China
- 30 - 45 days
- 1000 sets
C Series 165 kVA DG Set 50Hz is powered by Cummins diesel engine 6BTAA5.9-G12 which has many features as compact size, low fuel consumption, low vibration, low noise, low maintenance, high parts commonality & long service life, providing powered diesel gensets with great transient response, wide application, high economic efficiency & high reliability and meeting the small or medium power (prime or standby) demand on residential use, small shops, small projects and other fields. Cummins serves customers with International Warranty Services (IWS). And the correct selection method of dg diesel generator set model.
The correct selection method of dg diesel generator set model for C Series 165 kVA DG Set 50Hz
The factors that should be considered when selecting a dg diesel generator set model mainly include mechanical and electrical performance, the purpose of the dg set for home, the capacity and range of load, the environmental conditions (including altitude, climatic conditions, noise), and automation functions of the set. Since diesel generator sets can be used in three situations: common use, emergency and standby power systems, the requirements for diesel generator sets are different for different purposes. In this article, Bidirection Power Technology will introduce the correct selection method of diesel generator set model.
First. Selection of commonly used diesel generator sets
Commonly used generator sets have a long continuous working time, and the load curve changes greatly. The capacity, number and type of the set and the control method of the set are different from that of the emergency set.
Second, the choice of commercial standby generator set
When the sum of the load capacity, multiplied by the required coefficient, the calculated load is less than the capacity of the emergency diesel generator set, the home standby factor is considered according to 1.2, that is, the 1.2 times calculated capacity is less than the capacity of the emergency diesel generator set. After the mains power failure, the emergency power generation The unit supplies power to the load. When the calculated load after multiplying the required factor by the sum of the load capacity is greater than the capacity of a single emergency diesel generator set, two automatic home standby generator sets with the same model, capacity, voltage regulation and speed regulation characteristics can be selected. After the mains power outage, one or two of the units will supply genset power for domestic and commercial use; when the mains power outage and a fire breaks out, two units will supply power to the fire-fighting load to facilitate firefighting.
Three, the choice of emergency diesel generator
Emergency diesel generators should generally be high-speed, pressurized, low fuel consumption, and the same capacity diesel generator sets. High-speed supercharged diesel engines have a large single engine capacity and occupy a small space. Diesel engines are equipped with electronic or hydraulic speed regulation devices, which have better speed regulation performance; generators should use synchronous motors equipped with brushless excitation or phase compound excitation devices for more reliable performance and failure Low rate and convenient maintenance and repair; when the capacity of a single air conditioner or motor in the first-level load is large, the generator set with third harmonic excitation should be selected; the machine is assembled on a common chassis with a shock absorber; smoke exhaust A muffler should be installed at the pipe outlet to reduce the impact of noise on the surrounding environment.
Fourth, the choice of unit starting mode
There are three starting methods for diesel engines: manual starting, electric starting, and compressed air starting. Electric starting should be adopted in high-rise buildings, and compressed air starting should be avoided. A type of high-rise building must choose a diesel generator set with a self-starting device. Once the power supply of the city network is interrupted, the power supply must be supplied within 15 seconds (30 seconds for high regulations). In the second type of high-rise buildings, when conditions permit, the unit with self-starting device should also be used, and manual starting device can also be used when it is difficult.
Matters needing attention in matching with 3 phase backup generator motors. When the diesel generator set and the three-phase motor capacity are selected, it is recommended to consider a safety factor of 1.5, that is, 1.5 times the motor capacity (must be a soft start method). Pay attention to the relationship between rated power and reserve power, the relationship between KVA and KW. KVA is the apparent power, KW is the effective power, and the relationship between them is IKVA=0.8KW. Imported units are generally expressed in KVA dg, while domestic electrical equipment is generally expressed in KW dg.
The following specification for C Series 165 kVA DG Set 50Hz, you could check the detail power genset model 165 kva generator for buying diesel backup generator for house.
| C Series 165 kVA DG Set 50Hz Specification | |||
| Generator Model | BP-C165 | Engine Model | Cummins 6BTAA5.9-G12 (DCEC) |
| Standby Power | 165kVA/132kW | Prime Power | 150kVA/120kW |
| Frequency | 50Hz | Rotational Speed | 1500rpm |
Engine Specification for C Series 165 kVA DG Set 50Hz | |||
| Governor | Electronic | Weight | 413KG |
| No. of Cylinders | 6 | Aspiration | Turbocharged & Charge Air Cooled |
| Displacement | 5.9L | Fuel System | BYC P7100 |
Hourly Fuel Consumption (100% Output Power) | 34L | Minimum Required Oil Capacity | 16.4L |
| Power Range | 140-155kW | Horse Power Range | 187-207 |
Cummins 6BTAA series engines are all with features as compact size, low fuel consumption, low vibration, low noise, low maintenance, high parts commonality & long service life, providing powered diesel generator sets with great transient response, wide application, high economic efficiency & high reliability, and meeting the small or medium power (prime or standby) demand on residential use, small shops, small projects and other fields.
Dimension: 2400mm*950mm*1530mm (Open type); 3280*1080*1765mm (Silent type)
Weight: 1360 kg (Open type); 1710 kg (Silent type)
We will introduce the cooling system for dg set 165kVA as following:
The cooling water cycle of a 165kva diesel generator set has the expressions of large cycle and small cycle. What is the situation of these two cycles, and what is the cycle work process?
When the working conditions and environmental conditions change, the cooling system should be able to ensure the reliable operation of the engine diesel generator and maintain a better cooling water heat. The water temperature for all normal operations is usually around 80-90℃, which is mainly the use of cooling system coolant. The size loop is done. The circulation of coolant in the forced circulation water cooling system. Water jackets are cast in the cylinder head and cylinder block of the engine.
When the water temperature in the body of the 100kva diesel generator set is above 80℃, the coolant is pressurized by the water pump, and then enters the water jacket of the cylinder through the water distribution pipe. The coolant is circulating while absorbing the heat energy of the cylinder wall and increasing the heat. It is then injected into the cylinder head water jacket, where it absorbs heat and increases temperature and flows through the thermostat.
When the water temperature in the diesel engine generator set is greater than a certain degree of heat, the thermostat opens and the coolant flows into the radiator through the large circulation pipe. At the same time, considering the rotation of the fan, air blows through the radiator core. , So that the heat energy of the coolant flowing through the radiator core is continuously dispersed into the atmosphere. At this time, the cooling intensity is large, so that the water temperature is not too high. Considering that the cooling water circulation route is long at this time, it is called a large circulation. The circulating water path is a water tank, a water pump, an oil radiator, a water jacket, a thermostat, and a radiator;
When the water temperature in the body of the slient dg set is less than 70℃ and the genset engine heat is low, the second section of the thermostat closes the water channel to the radiator, and the cooling water flows back to the water inlet of the water pump immediately through the bypass circulation pipe, and then is The water pump presses into the cooling pipeline. This kind of circulating water circuit is called a small circulation.
When the water temperature in the body of a 100 kilowatt generator set is 70°C~80°C, the bypass valve of the thermostat is slowly closed, and the water outlet valve to the radiator is slowly opened. At this time, some of the cooling water in the fuselage is still in a small cycle, and some of the cooling water flows back to the radiator through the radiator return pipe. Considering that the coolant will immediately enter the cylinder again from the water pump without passing through the radiator, this prevents Unnecessary cooling, the heat of the dg diesel generator machine rises rapidly; when the coolant in the diesel engine generator set is around the above two heat levels, a part of the thermostat is open to the outside, and the size of the cooling water is circulated at the same time. At this time, the circulation of the coolant is called mixing cycle.
The coolant also flows into the intercooler to cool the pressurized air, flows through the water filter to filter the coolant and add water to the coolant. In order to balance the cooling of the inner and outer cylinders of the multi-cylinder engine generator set, the genset engine usually has a water distribution pipe or a cast water distribution chamber in the water jacket of the cylinder block. The water distribution pipe is a metal pipe with several water outlet holes along the longitudinal direction. The farther away from the water pump, the larger the water outlet hole, which can make the cooling intensity of the inner and outer cylinders similar, and the cooling of the whole machine is balanced.
In fact, the key to large and small cycles lies in the heat of the engine diesel generator, which is to prevent the automatic adjustment of the equipment from overheating. It is not difficult to master.
The pressure regulating spring of the Cummins slient dg and engine generator set is too large, the needle valve is stuck on the valve body, and the nozzle is blocked. The fuel injection pressure of the Cummins diesel engine generator set injector is low, and the pressure regulating spring is too small or broken. The pressure regulating screw is loose, the gap between the needle valve guide of the Cummins dg set and the needle valve body is too large or the needle valve cone is not sealed enough, and the contact surface of the nozzle and the injector body is not tightly sealed.
The injection pressure of the injector is clearly stipulated in the technical specifications of each unit. It cannot be adjusted too high or too low, otherwise it will cause uneven work of each cylinder of the Cummins generator set, power drop, and even cause the combustion chamber of the Cummins dg genset and early wear of piston parts. Generally speaking, if the fuel injection pressure of Cummins generator set is adjusted too low, the atomization of Cummins generator set fuel injection will be greatly deteriorated, diesel consumption will increase, and Cummins generator genset is not easy to start.
Even after starting, the exhaust pipe of Cummins power generator will always emit black smoke, the needle valve of Cummins 165 kVA generator set fuel injector is easy to deposit carbon, and the fuel injection pressure of Cummins 165 kVA power genset is adjusted too high or not well. At this time, it is easy to cause the explosion of the Cummins slient dg set, reducing the power, and it is easy to cause the early wear of the plunger and the fuel injector of the fuel injection pump of the Cummins engine generator set, and sometimes the high pressure oil pipe will burst.
Finally, Bidirection Power Technology reminds everyone that we must recognize the diesel generator brands of the unit. Generally imported generator sets are assembled machines, and domestic generator sets are currently integrated (that is, the generator and engine are of the same brand), and the performance is the same as some imported generator sets, and the price is cheap, so you should fully understand when purchasing the best standby generator brand of each component of the unit (some manufacturers only report the diesel engine or generator brand, but not the place of production, not the unit brand, etc.) in order to comprehensively evaluate the grade of the unit.
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