How to Determine the Power Supply Range of 400 kw Genset for Medical Use

How to set up and determine the power supply range of a 400kw diesel generator for medical use? The 400kw diesel generator, as an independent power generation equipment, starts quickly and has full power. The current epidemic situation is widely used in medical institutions, providing a reliable power guarantee. JGJ16-2008 code for electrical design of civil buildings, JGJ312-2013 code for electrical design of medical buildings and other relevant regulations. The particularly important loads in comprehensive medical institutions include emergency rescue rooms, purification rooms of blood wards, delivery rooms, intensive care units, premature infant room, hemodialysis room, operating room, preoperative preparation room, postoperative resuscitation room, anesthesia room, cardiovascular angiography examination room and other places related to the patient's life equipment and lighting electricity; biochemical equipment, severe respiratory infection area Electricity for the ventilation system.

Since the specifications require that the emergency power supply time of medical institutions is 3-24h, diesel generators are used as backup power sources to cooperate with emergency power sources such as UPS and EPS, which can improve the reliability of the power supply of the particularly important loads under the premise of reducing the project cost. The functions of the two power sources can be complemented by each other. The 400-kilowatt diesel generator can effectively solve the limitation of UPS and other emergency power supply time, and the UPS and other emergency power supplies can solve the problem of the 400-kilowatt diesel generator starting time.

Fire power load.

Regarding whether the fire-fighting electrical load of medical institutions needs to be powered by a backup power supply, there is no requirement in the relevant design specifications. However, sound fire-fighting facilities are one of the conditions for the building to be put into use. The fire-fighting power is excluded from the power supply range of the standby 400kw diesel generator. From the perspective of fire-fighting laws and regulations, the building at this time is no longer available. 

Moreover, the number of sick and disabled people in medical institutions is concentrated, and it is much more difficult to evacuate people during a fire than in general public buildings. Once a fire occurs, there are no fire-fighting facilities in the building that can be used, and the consequences are unimaginable.

Therefore, the backup power supply needs to provide power for the fire-fighting load. Since the fire power load is not used at the same time as the normal need to protect the power load, and the capacity of the medical institution's normal need to protect the power load is far greater than the fire power load capacity, a spare 400kw diesel generator is used to supply the fire power load, which will not have a big impact on the cost and complexity of the power supply and distribution system.

Maintain the guaranteed power consumption of medical institutions with low operational requirements.

A spare 400 kW diesel generator can maintain the low operating requirements of medical institutions:

(1) Ensure the smooth completion of ongoing operations, diagnosis and treatment;

(2) Ensure timely treatment of critically ill patients;

(3) The basic living facilities of medical staff and patients can operate normally; the tree bird education electrical design training

(4) Ensure that the medicine, living body and body fluid used for pathological analysis are effective;

(5) Normal operation of communication facilities;

(6) The normal operation of security and fire-fighting facilities.

The operation of medical institutions has its own special procedures, and there is a close logical relationship between multiple places or functions. The lack of one link will cause other links to be unable to proceed or lose the meaning of continuing. Therefore, in order to achieve low operating requirements, a standby 400kw diesel generator needs to provide power protection for the following electrical loads.

Other electrical equipment in the following places except for the particularly important load in the load: emergency rescue room, intensive care unit, purification room of the blood ward, delivery room, premature infant room, hemodialysis room, operating room, preoperative preparation room, postoperative Resuscitation room, anesthesia room, cardiovascular examination room, etc. Emergency observation room and treatment room, emergency room, baby room, endoscopy room, radiotherapy room, imaging department, nuclear medicine room and other medical equipment and lighting power. Hyperbaric oxygen chamber, blood bank, incubator, incubator. Electrical equipment for the sampling room, filming room, and microscopy room of the pathology department.

The computer network system uses electricity. Electricity for lighting in the substation and distribution room. Air compressors, vacuum suction pumps, oxygen generators and other equipment and their control devices and alarm systems. Electricity for supply, cold storage of valuable medicines, cabinets, cold sources for operating rooms, heating boilers and heat exchange. Security power, electronic information equipment room power, domestic water pump power, drainage pump power, sewage treatment station power. The specific amount of electricity used for medical elevators is determined in conjunction with the layout of the building, and it is necessary to ensure that the medical elevators powered by the backup power supply can cover all the areas that patients need to reach. Tree bird education electrical design training.

During the operation of the diesel generator when the normal power supply is interrupted, medical institutions will take measures to restrict the visits and operations of mild and chronic patients, and the number of daily outpatient visits and the number of operating units will decrease significantly. Therefore, the above-mentioned places or facilities The electricity consumption will also be lower than usual, and a lower demand factor can be used in load calculation. The capacity of 400 kilowatt diesel generator is still suitable for 10% to 20% of the total installed capacity of transformers recommended by the specification.

Precautions for the selection of a spare 400 kW diesel generator:

(1) The specification requires that 400kw diesel generators in medical institutions should supply power to the electrical load within 15s, so a quick-start type unit should be selected.

(2) The specification requires that the fuel supply time of a 400-kilowatt diesel generator should be greater than 24h for tertiary medical institutions, and 12h for secondary medical institutions and other backup power sources should not be maintained for less than 24h, so special attention should be paid when selecting units The difference between standby power, main (normal) power, and continuous power.

(3) The influence of environmental factors such as temperature, humidity, and air pressure on the capacity of 400 kW diesel generators should be considered.

(4) The requirements for the capacity and excitation mode of the generator set for the direct start of large-capacity equipment such as fire-fighting water pumps and operating room cold sources should be considered.

(5) Choose low-noise 400kw diesel generators or reduce noise in the engine room.

(6) When the calculated reserve load capacity is more than 1500kW, it is recommended to use two 400kW diesel generators of the same power in parallel.

The electrical design of the above-mentioned comprehensive medical institutions is relatively complicated and special. The reasonable installation of 400 kilowatt diesel generators and determining the power supply range are essential to improve the reliability of power supply of medical institutions and protect the personal and therapeutic effects of patients. Designers not only need to fully understand the requirements of relevant specifications and standards, but also learn and understand the operating process of medical institutions, the principle and characteristics of medical equipment, etc., in order to make the 400kw diesel generator function as a backup power source. If you want to know more, please feel free to contact Dingbo Power by email dingbo@dieselgeneratortech.com.