Acrel Medical IT System Applied to Luanda General Hospital, Angola

Abstract: Diagnosis and treatment in modern hospitals are inseparable from advanced medical equipment, which is inseparable from a safe and reliable power supply. Many operations often last for several hours, and the consequences of a sudden power failure during the operation are unimaginable. At the same time, many medical devices directly touch or penetrate into the human organs. At this time, the very small leakage current will threaten the life of the patient. Therefore, the national standards have made clear requirements; medical group 2 locations must be powered by an IT system. This article introduces the application of Acrel Medical IT System in Luanda General Hospital, Angola

Keywords: Medical IT system, Insulation monitoring device, Alarm indicators.

1. Project Overview

Luanda General Hospital in Angola is a China-aided reconstruction and expansion project of Luanda General Hospital in Angola undertaken by China Railway Fourth Bureau. The project uses 8 sets of Acrel medical IT system products. They are an AITR series isolation transformer, an AKH-0.66P26 current transformer, an AIM-M series insulation monitoring device, an AID series remote alarm indicator, and a DC power supply unit.

2. Introduction of Medical Isolated Power Supply System

The medical isolated power supply system is to switch the grounding system (TN-S system) into an ungrounded system (IT system) through a medical isolation transformer to supply power for important medical equipment. The insulation monitoring device has the function of insulation monitoring, and the fault locator has the function of fault circuit locating.

3. Acrel Medical Isolated Power Supply System Solutions

Acrel medical isolated power supply system is suitable for operating room, ICU, CCU, and other medical group 2 locations, providing safe and uninterruptible power supply. Medical isolated power panels mainly include the AITR series isolation transformer, AKH-0.66P26 current transformer, AIM-M series insulation monitoring device, AID series remote alarm indicator, DC power supply, ASG series test signal generator, and AIL series insulation fault locator.

3.1 Acrel Medical Isolated Power Supply System for Operating Room

Option I without the insulation fault location function

Option II with insulation fault location function

Note: 1. For the operating room, the AID series alarm indicator should be installed on the intelligence panel inside the operating room, or next to the intelligence panel (wall-mounted installation), so that medical personnel can immediately receive a notification when there is a power supply failure.

2. In Option II, if the number of located channels is more than eight, two sets of AIL150 can be used. The combination can be AIL150-8 and AIL150-4 (up to 12 channels), or AIL150 -8 and AIL150-8 (up to 16 channels).

3.2 Acrel Medical Isolated Power Supply System for ICU and CCU

Option I without the insulation fault location function

Option II with insulation fault location function

Note: For the intensive care unit, an AID series alarm indicator should be installed in the nurses 'station so that medical personnel can monitor the operating status of the isolated power supply system.

3.3 Product Selection

4. Connection Diagram

5. Installation Photos

6. Conclusion

After expansion and renovation, Luanda General Hospital has become one of the largest and best-equipped hospitals in Angola. Acrel's medical IT system has provided crucial support for the hospital's safe and continuous power supply, significantly improving local medical conditions and benefiting the local people.

Aaron Shi

Electrical Engineer Expert, Providing Service, consultant, product expert, professional manufacturer of energy efficiency management systemic solutions, and energy meters.