ACREL Hospital Isolated Power Supply Application in Pitsanulok hospital project

Abstract：With the widespread application of electronic medical equipment inhospitals, the threat of leakage current to patients is becoming greater andgreater, especially in places where life is critical. The patients are directlyexposed to various electrodes and sensors during surgery or anesthesia.Inserted into the human body, even the slight leakage current may cause thepatient to be electrocuted. In addition, some medical equipment is used tomaintain the lives of critically ill patients. Once the equipment is poweredoff, it will also threaten the lives of patients. Therefore, for the electricaldesign of the special place of the hospital, the IT system should be used forpower supply in strict accordance with national standards and regulations.Thisarticle introduces the application of Medical isolated power supply inPitsanulok hospital project.

Keywords:MedicalIT,Insulation monitor device

0.Project Overview

Pitsanulokhospital project is located in Thailand，the project is mainly used for Pitsanulok hospital medical equipmentupdate .

1.Background

Electric shockand system fault caused by power distribution system are mostly caused by thegrounding fault of equipment line. Grounding fault will directly bring the harmof power supply interruption; when the earth fault leakage is serious, it willeven burn electrical equipment or lines, causing irreparable loss.

In Medicalplaces, especially those life-threatening class 2 medical places, patients insurgery or anesthesia state, without self-behavior ability, small leakagecurrent can lead to electric shock death of patients. Therefore, the electricaldesign of this special place should be carried out strictly in accordance with the relevant nationalstandards and specifications.

IT powerdistribution system (also known as isolated power supply system or ungroundedsystem) has very small leakage current to ground due to its neutral pointungrounded. When the first insulation fault occurs, the power supply of theequipment will not be affected. So the system can continue to operate. Theinsulation monitoring device installed in the system can detect the fault intime and send out the corresponding fault warning, prompting the relevantpersonnel to remove the fault at the appropriate time. For the operation room,intensive care unit and other medical places with high requirements for powersupply continuity and safety, local IT system power supply can ensure thesecurity and reliability of power supply for important loads.

2.Description of five sets of medicalIT productsIntroduction

Medical ITsystem insulation monitoring and fault locating products (five-piece set)include AITR series medical isolation transformer, AIM-M100 medical intelligentinsulation monitoring instrument, AKH-0.66P26 current transformer, ACLP10-24 DCpower supply, and AID series(AID120/AID150) centralized alarm and displayinstrument, which are shown in Table 1.

Table 1 MedicalIT System Insulation Monitoring Products

3.On site Photos

Bibliography

1、IT System Insulation Monitoring Device and Fault Location System ofAcrel.

2、IEC60354-7-710，Electrical installations ofbuildings-Part 7-710:Requirements for special installations or locations -Medical locations.