850KVA Cummins Diesel Generator Containerized Type For Saudi Arabia | KT38-G
850KVA Cummins diesel generator set 60HZ 400V for the back up power for a local shopping mall in Saudi Arabia.
For large shopping malls, a diesel generator set serves as a silent yet absolutely vital “guardian of power.” While it may go largely unnoticed during normal times, the moment a utility power failure occurs, it must immediately step in to ensure the mall’s continued operation and safety. Its primary functions and significance are manifested in the following key aspects:
🛡️ Core Function: Emergency and Backup Power Supply
Shopping malls are highly populated environments; a power outage here would not only result in massive economic losses but could also trigger safety incidents, such as stampedes. Consequently, the core function of a diesel generator set is to provide timely and reliable power support to critical equipment and areas whenever the main utility supply is interrupted.
This function is broadly categorized into two types:
Lifeline (Fire Safety Loads): This constitutes the absolute priority. In the event of an emergency—such as a fire—the generator set must start immediately to power fire safety equipment, including fire pumps, sprinkler systems, smoke extraction fans, fire elevators, emergency lighting, and evacuation signage. This ensures the safe evacuation of personnel and facilitates initial firefighting efforts.
Operational Lifeline (Critical Loads): Beyond fire safety, the generator set must also safeguard the mall’s basic operations and minimize economic losses. This encompasses systems such as point-of-sale (POS) terminals, low-voltage equipment rooms (for network and communication infrastructure), surveillance centers, at least a portion of passenger elevators, domestic water pumps, and basic lighting in select public areas.
📝 Key Design and Technical Requirements
Effectively deploying a generator set within a shopping mall environment requires a comprehensive assessment of multiple factors. The following are some critical considerations:
Capacity Calculation: The capacity of the generator set cannot be chosen arbitrarily; it requires precise calculation. Typically, separate calculations are performed for “Fire Safety Loads” (the total power demand of all equipment that *must* activate during a fire) and “Critical Operational Loads” (the total power demand of essential equipment that *must* be sustained during a utility outage). The higher of these two values
Rapid Startup and Switching: Shopping malls demand a power transition process that is virtually seamless. The generator set must feature a rapid automatic startup capability, typically required to initiate and assume the electrical load within 15 seconds. This functionality relies on the integration of an Automatic Transfer Switch (ATS), which automatically monitors the status of the utility power supply and instantly switches the electrical load to the generator set the moment a utility failure is detected. Installation Location and Environmental Considerations: Given the high cost of real estate, shopping mall generator sets are typically situated in basements or dedicated equipment rooms. This presents a series of challenges that require specialized design solutions:
Noise Reduction: Employing silent-type generator sets or implementing soundproofing measures within the equipment room to prevent noise disturbance to the public.
Ventilation and Heat Dissipation: Designing highly efficient air intake and exhaust ducts to ensure that basement-located units can effectively dissipate heat and operate normally.
Exhaust Management: Prudently designing exhaust piping to channel waste gases to the rooftop—or to locations with minimal public impact—while also ensuring proper thermal insulation of the piping.
Reliability and Maintenance: As “standby” equipment that is rarely in active use, its reliability is of paramount importance. Regular test runs and maintenance are essential to ensure the unit remains in optimal condition, capable of a “one-touch start” and reliable operation during emergencies.
📝 The specification of the 850KVA Cummins diesel generator set
| Standby Power(60HZ) | 680KW/850KVA |
| Prime Power(60HZ) | 640KW/800KVA |
| Generator Ratings |
| 电压 | HZ | phase | P.F | Prime Amps | Standby Power (KVA) | Prime Power (KVA) |
| 480/277V | 60 | 3 | 0.8 | 962A | 850 | 800 |
| 400/230V | 60 | 3 | 0.8 | 1155A | 850 | 800 |
Prime power (PRP): Prime power is available for an unlimited number of annual hours in available load application, in according with GB/T2820-97(EQVLso8528); A 10% overload capability is available for a period of 1 hour within a 12-hour period of operation.
Standby power Rating (ESP): The standby power rating is application for supplying emergency power for the duration of a utility power interruption. No overload, utility parallel or negotiated outage operation capability is available at this rating.
| 发动机数据 |
| Manufacturer /Model | Cummins KT38-G |
| Air intake System | Turbocharged and Aftercooled |
| Cylinder Arrangement | 12.V |
| 位移 | 37.8L |
| Bore and Stroke | 159*159(MM) |
| Compression Ratio | 15.5:1 |
| Rated RPM | 1800rpm |
| Max standby Power at Rated RPM | 747KW |
| Prime power at rated RPM | 679KW |
| Governor Type | electric |
| Exhaust System |
| Exhaust Gas Flow (after turbo) | 2572L/s |
| Exhaust Temperature | 516℃ |
| Air Intake System |
| Max Intake Restriction Normal Duty Air Cleaner and Clean Filter Element |
10kPa |
| Air Flow | 944L/S |
| Fuel System |
| 100%(Prime Power) Load | 192g/Kwh |
| 75%(Prime Power) Load | 197g/Kwh |
| 50%(Prime Power) Load | 210g/Kwh |
| Oil System |
| Engine Oil Tank Capacity | 135L |
| Min Oil Pressure at Rated RPM | 310kPa |
| 冷却系统 |
| Coolant Capacity | 135L |
| Thermostat | 80-90℃ |
| Max top tank Temperature | 104℃ |
| ALTERNATOR SPECIFICATION |
| General data |
Compliance with GB755, BS5000, VDE0530, NEMAMG1-22, IED34-1, CSA22.2 and AS1359 standards.
| Alternator Data |
| Manufacture / Model | Stamford /S5L1D-F41 |
| Number of Phase | three |
| Connecting Type | 3 Phase and 4 wire |
| Number of Bearing | one |
| Power Factor | 0.8 |
| Protection Grade | IP23 |
| Altitude | ≤1000m |
| Exciter Type | Brush less, self-exciting |
| Insulation Class, Temperature Rise | H/H |
| Telephone Influence Factor (TIF) | < 50 |
| THF | <2% |
| Alternator Capacity | 800KVA |
🛡️ Supply Scope
1.原装康明斯工业柴油发动机,带24V直流起动电机和交流发电机。
2.散热器最高40°C/50°C,风扇由皮带驱动,带安全防护装置
3.原装斯坦福德、利莱森玛、马拉松、Mecc alte、Engga或中国交流发电机,无刷。
4.自动启动控制面板和保护系统
5.抗振悬架减振器
6.带8小时运行油箱的基架
7.断路器和ATS
8.启动电池、机架和电缆
9.排气管、排气虹吸管、法兰和消声器
10.标准20英尺集装箱房
集装箱特征
标准20英尺集装箱,尺寸:6058*2438*2438mm
墙体:50mm夹芯板,保温岩棉,表面彩钢板
大型检修门,便于维护和操作
进气和排气百叶窗
控制面板观察窗,包括安全检修门。
地板防滑板
配备自动火灾探测和二氧化碳灭火系统
此外,还配备了干粉便携式灭火器。
带照明系统
紧急停止按钮安装在
定制油箱