ACREL Hospital Isolated Power Supply Application in Malaysia

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ACREL Hospital Isolated Power Supply Application in Malaysia

Mar 30, 2022

Abstract：With the widespread application of electronic medical equipment in hospitals, the threat of leakage current to patients is becoming greater and greater, especially in places where life is critical. The patients are directly exposed to various electrodes and sensors during surgery or anesthesia. Inserted into the human body, even the slight leakage current may cause the patient to be electrocuted. In addition, some medical equipment is used to maintain the lives of critically ill patients. Once the equipment is powered off, it will also threaten the lives of patients. Therefore, for the electrical design of the special place of the hospital, the IT system should be used for power supply in strict accordance with national standards anregulations.This article introduces the application of Medical isolated power supply in Malaysia.
Keywords:Medical IT,Insulation monitor device,fault locator

0.Project Overview
Malaysia I.E.D is located in SELANGOR DARUL EHSAN，the project is mainly used in island hospital in Malaysia,the products are used for 12 circuit insulation fault location for 3 sets hospital isolated power system,the related products are insulation monitor device AIM-M200,signal test generator ASG150,centralized alarm indicator AID150,insulation fault locator AIL150-8,AIL150-4 and leakage current transformer AKH-0.66P26.

1. Medical IT system Introduction
ACREL medical IT system insulation monitoring device and fault location system is suitable for hospital operating room, ICU (CCU) and other important places, and can provide a safe place for such continuous, reliable power solutions.

2.Power Supply Solution for Medical Locations
2.1ICU, CCU ward Distribution Solutions (GGF-I8G isolate electrical cabinet system diagram, for example)

Option I without fault location function
Option II with fault location function

Note: In the power distribution solutions of intensive care unit , AID series centralized alarm and display device should be installed in the nurses 'station, the hospital staff of nurses' station monitor the Operating status of each isolated power system
2.2 Operating Room Distribution Solutions (GGF-O8G isolate electrical cabinet system diagram, for example)

Option I without insulation fault location function
Option II with insulation fault location function

Note: 1. In the operating room power distribution solutions, AID series of external alarm and display device should be installed on the intelligence panel inside the operating room, or next to the intelligence panel (wall mounted installation). During surgery, the medical staff monitor the health of isolated power system.
2. In the scheme with insulation fault location function，if the number of located channels is more than eight，two sets of AIL150 locator 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.Typical wiring diagram

4.Introduction of 7-Piece Medical IT

Product name and type	Product picture	Description
AITR series medical isolation transformer		AITR series isolation transformer is specially used in medical IT system. The windings are treated with double insulation and have electrostatic shielding layer, which reduces electromagnetic interference between windings. The PT100 temperature sensor is installed in the wire bag to monitor the temperature of transformer. The whole body is treated with vacuum invasion paint, which increases mechanical strength and corrosion resistance. The product has good temperature rise performance and very low noise.
AIM-M200 medical intelligent insulation monitoring instrument		AIM-M200 medical intelligent insulation monitoring instrument adopts advanced microcontroller technology, which has high integration, compact size, convenient installation and integrates intelligence, digitalization and networking in one. It is ideal selection for insulation monitoring of isolation power system in Class 2 medical locations such as operating room and intensive care unit.
AKH-0.66P26 current transformer		The AKH-0.66P26 type current transformer is the protective current transformer supporting the AIM-M200 insulation monitor, of which the maximum measurable current is 60A and the transformation ratio is 2000:1. The current transformer is directly fixed inside cabinet by screwing, and the secondary side is leaded out by the terminal, which is convenient to install and use.
AIL150-4/AIL150-8 insulation fault locator		AIL150-4/AIL150-8 insulation fault locator adopts high sensitivity transformer combined with high precision signal detecting circuit, which detects the signal imported into the system from ASG150 test signal generator and accurately locates the circuits which have insulation faults. AIL150-4 insulation fault locator can locate the insulation faults of 4 circuits, and the AIL150-8 insulation fault locator can locate the insulation faults of 8 circuits.
AIL150-4/AIL150-8 insulation fault locator
ASG150 test signal generator		The ASG150 test signal generator adopts 32-bit microprocessor chip and high-precision signal generation circuit to realize the generation of specific test signal. When the monitored IT system has insulation faults, it can start up and produce test signal in time, working with the insulation fault locator to realize insulation fault location.。
HDR-60-24 power module		HDR-60-24 direct-current power supply can provide 24V DC power supply simultaneously for AIM-M200 medical intelligent insulation monitoring instrument, ASG150 test signal generator, AIL150 series insulation fault locator and AID150 centralized alarm and display instrument. The power supply is of high capacity, stable voltage output and convenient installation, which can meet the power-supply requirements of the above-mentioned meters and is the recommended power supply product.
AID150 centralized alarm and display instrument		AID150 centralized alarm and display instrument adopts the LCD liquid crystal display and achieves data exchange with AIM-M200 medical intelligent insulation monitoring instrument through RS485 communication interface, which can real-time monitor multi-channel data of AIM-M200 medical intelligent insulation monitoring instrument.

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