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Hi All,submitted by Altruistic_Box_8971 to 3Dprinting [link] [comments]
I am have some problem getting my print to come out nice. Any help is highly appreciated.
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How do these artefacts come into existance and how can I prevent it? It only happens on the right side and only on this surface.
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btw if this hit I would've had $100+submitted by Richmajor100 to sportsbetting [link] [comments]
2023.06.07 07:34 Famous-Kale2618 I opened new Region. And this is my new CR train fleet.
|submitted by Famous-Kale2618 to trainstation2 [link] [comments]|
2023.06.07 07:03 jakex003 Don’t bet baseball and haven’t watched it in at least a decade. Was curious though if this would work. Almost.
13/14. Try again tomorrow?submitted by jakex003 to sportsbetting [link] [comments]
2023.06.07 07:01 4ShotBot My Roommate is Slenderman: Finale/Epilogue
2023.06.07 06:51 Evening-Sign9120 "Now. Bear with me. I have a plan..."
|submitted by Evening-Sign9120 to Grimdank [link] [comments]|
2023.06.07 06:50 Acrel-electric Discussion about the application of medical IT power system in a hospital
摘要：本文主要阐述了IT隔离电源系统在深圳市第三人民医院ICU、手术室内的应用，以及IT隔离电源系统的重要性、优点及注意事项。 Abstract: This article mainly describes the application of IT isolated power system in ICU and operating room of the Third People's Hospital of Shenzhen city, as well as the importance, advantages and matters needing attention of IT isolated power system.submitted by Acrel-electric to u/Acrel-electric [link] [comments]
Key words: IT isolated power supply, system, ground
1、项目概况 Project overview
深圳市第三人民医院项目，位于龙岗区布吉镇李朗立交桥西南侧，建设用地 100005 ㎡，总建筑面积 81737 ㎡，包含门诊楼和医技科研楼、住院楼、行政楼、学术报告厅等共十四栋建筑及配套道路、广场、绿化等。为深圳市重大建设项目，是一所与中心城建设相配套适应 深圳市规划发展的现代化的平战结合的传染病医院。是集医疗、科研、防保、教学与康复为 一体的“三级”传染病医院。
The project of Shenzhen Third People's Hospital is located in the southwest side of Lilang overpass in Buji Town, Longgang District. The construction area is 10,0005 ㎡, and the total construction area is 81,737 ㎡, including 14 buildings such as outpatient building, medical technology research building, inpatient building, administrative building and academic lecture hall, and supporting roads, squares and greening, etc..As a major construction project of Shenzhen city, it is a modern infectious disease hospital which is compatible with the construction of the central city and ADAPTS to the planned development of Shenzhen city.It is a three-level infectious disease hospital integrating medical treatment, scientific research, prevention and protection, teaching and rehabilitation.
2、关于设置 IT 隔离电源系统的相关规范要求
Specification requirements for setting up IT isolated power system
随着社会经济的不断发展，大型综合型的现代化医院不断投入建设，因而医院电气安全可靠也引起来业界的重视，其中关于 ICU、手术室等重要场合的配电安全可靠越来越引起业界重视。尤其是关于IT隔离电源的设置。GB16895.24-2005/IEC60364-7-710:2002 标准中规定，在医疗领域2类医疗场所内，用于维持生命的、外科手术的和其他位于“患者区域”内的医疗电器设备和系统的供电回路应选用带绝缘监视的医疗IT系统供电。2008年8月1日正式实施的《民用建筑电气设计规范》中12.8.6对医疗场所采用的IT系统供电做了相应要求和规定。
With the continuous development of society and economy, large comprehensive modern hospitals are constantly put into construction, so the electrical safety and reliability of hospitals have also attracted the attention of the industry.The safety and reliability of power distribution in important occasions such as ICU and operating room have attracted more and more attention from the industry. Especially with regard to IT isolation power Settings.According to gb16895.24-2005 /IEC60364-7-710:2002, the power supply circuit for life-sustaining, surgical, and other medical electrical equipment and systems located in the "patient area" in class 2 medical facilities in the medical field shall be powered by medical IT systems with insulation and monitoring.12.8.6 In the Civil Building Electrical Design Code officially implemented on August 1, 2008, the corresponding requirements and regulations are made for the POWER supply of IT system used in medical places.
In class 2 medical facilities, the medical IT system shall be used for the power supply circuits for life-sustaining, surgical and other medical electrogas equipment and systems located in the "patient area".
Separate medical IT systems should be installed at least once in adjacent rooms for the same purpose.And it is equipped with insulation monitor.
Each health IT system should be located where medical personnel can monitor IT regularly and should be equipped with an audible and visual alarm system.
Medical IT transformers should be equipped with monitoring devices for overload and overheating.
In 12.8.10, relevant provisions are made for auxiliary equipotential connection.At the same time, 12.8.1-12.8.6 are stipulated in the provisions of 12.8.10 in accordance with the national standard "Medical Places required by Special Devices or Places" GB16895.24.The two types of places include: emergency room (outpatient operating room), operating room, CU room, catheter intervention room and angiography room.
3、IT 隔离电源系统简介及医院采用的重要性 Introduction of IT isolated power system and importance of hospital adoption
IT isolates the power system, and I indicates that the power side is not working grounded, or is grounded through high impedance.T represents the grounding protection of the electrical and gas equipment at the load side.IT system in the power supply distance is not very long, the reliability of power supply is high, good security.Generally used in places where blackouts are not allowed, or where strict continuous power supply is required, IT systems must be used in hospital operating rooms, emergency rooms, ICU rooms, and other type ii places.The use of IT mode power supply system, that is, the neutral point of the power supply is not grounded, once the equipment leakage, single-phase leakage current to the ground is very small, will not destroy the balance of the power supply voltage, so IT can avoid electric shock and other electrical accidents, at the same time is not enough to make the circuit protection electrical equipment action cut off the power supply, to ensure the uninterrupted power supply.So than the power neutral grounding system is safe and reliable.
The importance and necessity of using isolated power systems in hospitals.
而在一般通用建筑中所采用的对地漏电保护开关，其动作响应值是mA 级（如：30 mA），远远不能满足医疗领域的需要。在医院的特殊环境里，漏电流对病人构成了潜在的危险，因此对电气安全设计也提出了特殊的要求。尤其是那些生命攸关的场所，如外科手术室、重症监护室、心脏手术室等地均需安装医用IT隔离电源系统，其目的就是为了保证对该场所内的医疗电器提供一个安全可靠的电源，以确保病人的安全。在导电体触及到心脏(例如，打开心脏的手术或埋置心脏起搏器)时，在普通安全接地的导体之间流过的细微电流会造成微电击和死亡的可能。隔离变压器就象一个门一样，将医疗地区的非保护区域和保护区域的电气线路隔开，保护区域内所有带电导体是与地隔离的，防止线路绝缘层上危险电流造成微电击。绝缘监视仪必须与隔离变压器配合使用，用来连续监视隔离变压器二次侧的带电导体与地之间的电阻及电流，例如，手术过程中流出体外的血液和金属制的手术台可能会使病人与地形成一个通路，这样就存在预期危险电流，一旦医疗电子设备的导电体也形成对地通路(如漏电)，将会造成宏电击(不是所有电流都流经心脏)或微电击(所有电流都流经心脏)。一般供电电网是以大地作为参考电位，相线中的电流可以通过任何未绝缘的通道，对地构成回路，这是电击的根本原因。隔离供电是采用隔离变压器供电，电源经隔离变压器后，原电网中的地已不再是参考电位了。隔离变压器任何一根输出线都不能与地构成回路，只能在两根输出线之间构成回路，这就提高了供电的可靠性。用隔离变压器以分隔非保护区域与保护区域，在隔离变压器的次级引出IT系统的电源，以防止产生接地故障电流。将IT系统引入手术室或急救室，在房间内设一配电箱，箱内放置绝缘监视仪，绝缘监视仪的使用可以及早的显示隔离变压器次级负载部分的绝缘状况，在发生绝缘故障对人身构成威胁前就提供报警信号。而此时电源不会被切断，保证了供电的连续性，医护人员此时可以根据监视仪上显示的漏电流大小和手术的实际情况及时处理，因而人身触电的危险被降低到了最小。
It is well known that when the direct leakage of electrical equipment to the human heart is greater than 10uA, it will cause a micro-shock accident to the patient.
However, the action response value of the earth leakage protection switch used in general general buildings is mA level (such as: 30 mA), which is far from meeting the needs of the medical field.In the special environment of hospital, leakage current poses a potential danger to patients, so special requirements are put forward for electrical safety design.In particular, those vital places, such as surgical operating rooms, intensive care units, cardiac operating rooms, etc., need to install medical IT isolation power system, the purpose of which is to ensure a safe and reliable power supply to medical appliances in the site, so as to ensure the safety of patients.When the conductor touches the heart (for example, during open-heart surgery or embedding a pacemaker), the tiny currents flowing between normally safely grounded conductors can cause micro-shocks and the possibility of death.The isolation transformer acts as a door separating the non-protected area of the medical area from the electrical wiring in the protected area. All live conductors in the protected area are isolated from the ground to prevent the dangerous current on the line insulation from causing a micro-shock.Insulation monitors must be used together with the isolation transformer, used for continuous monitoring isolation transformer secondary side of charged conductor and earth between the resistance and current, for example, in the process of the operation flow of blood and in vitro metal table may make the patient and to form a path, so there are dangerous currents, once the conductor in the medical electronic equipment form of pathways (such as leakage), will cause the macro electric shock (not all current flows through the heart) or micro electric shock (all electric current flows through the heart).Generally, the power supply network takes the ground as the reference potential, and the current in the phase line can pass through any uninsulated channel to form a circuit to the ground, which is the root cause of electric shock.Isolated power supply is the use of isolated transformer power supply, power through the isolated transformer, the original grid is no longer a reference potential.None of the output lines of the isolating transformer can form a circuit with the ground, but can only form a circuit between two output lines, which improves the reliability of power supply.The isolating transformer is used to separate the unprotected area from the protected area, and the power of the IT system is extracted at the secondary of the isolating transformer to prevent the generation of ground fault current.The IT system will be introduced into the operating room or emergency room, and a distribution box will be set in the room, and insulation monitors will be placed in the box. The use of insulation monitors can show the insulation status of the secondary load part of the isolation transformer as early as possible, and alarm signals will be provided before the insulation failure poses a threat to the person.At this time, the power will not be cut off, to ensure the continuity of power supply.Medical staff can then monitor the leakage current and the actual operation, so that the risk of personal shock is minimized.
4、深圳市某医院 IT 隔离电源系统的配置情况 Configuration of IT isolated power supply system in a hospital in Shenzhen city
A hospital in Shenzhen has installed a medical IT isolated power system in all operating rooms and ICUs.Specific composition including isolation transformer, insulation monitors, external alarm and display, current transformer, etc., the system sets the continuity of insulation monitoring, monitoring, and improve the fire load transformer temperature monitoring at an organic whole, reduces the contact voltage and the floor drain current, make person get an electric shock hazard to minimize, greatly improve the ability of accident prevention, to keep the power supply security.A hospital in Shenzhen city chose Bendell IT isolated power supply system from Germany. 系统图如下： The system diagram is as follows:
The IT isolated power system in the ICU is as follows:
Each ICU is equipped with a set of 6.3KVA IT system (including 6.3KVA isolation transformer ES710, insulation monitor 107TD47, current transformer STW2, external alarm display and tester MK2007CBM-CN, special instrument power supply AN450).
2）手术室中IT隔离电源系统图 Diagram of IT isolated power supply system in operating room
Each operating room is equipped with a set of 8KVAIT isolated power supply system (including isolation transformer 8KVA, insulation monitor, special power supply, external alarm display and tester MK2007CBM-CN).
3）系统设备功能: System and equipment functions:
a)绝缘监视仪 Insulation monitor
- Insulation monitoring and alarm system conforms to IEC61557-8 and IEC60364-7-710 standards.
- Special insulation monitors for medical IT systems
- Insulation monitoring, load monitoring and isolation transformer temperature monitoring functions
- LCD with backlit display
- insulation monitoring response value adjusting range 50kΩ-500Ω
- Adjustment range of overload monitoring response value 5A-50A
- Output alarm relay
- RS485 interface
-Measured value analog current signal output
- Built-in or external self-check button
- Wiring monitoring
- Guide rail installation
- ac impedance should be at least 100kΩ;
- The test voltage shall not be greater than dc 25V;
- Even in the case of fault, the peak value of its injected current is not greater than 1Ma;
- the latest in insulation resistance to the 50 kΩ, should be a signal.And the apparatus for testing this function is configured.
b)隔离变压器 Isolating transformer
-满足《建筑物电气装置 第 7-710 部分：特殊装置或场所的要求—医疗场所
- 容量 3.15-10kVA
- 噪音低于 35 分贝
-变压器的二次侧额定电压 Un 不超过 250V，用于移动式和固定式设备的医疗 IT 系统采用单相变压器，其额定输出容量不小于 0.5Kva，不超过 10Kva。
- Meeting electrical installations in buildings - Part 7-710: Requirements for special installations or places - Medical places
It is stipulated in GB16895.24-2005/IEC60364-7-710:2002 710.512.1.6 that medical isolating transformers shall meet the requirements of IEC61558-2-15.
- 3.15-10 kva capacity
- Temperature sensor is installed inside the winding
- Noise below 35 decibels
- The transformer is installed close to the medical site, in the cabinet or in the outer sheath to avoid inadvertent contact with live parts.
- the rated voltage on the secondary side of the transformer shall not exceed 250V. Medical IT systems for mobile and stationary equipment shall adopt single-phase transformers with rated output capacity of not less than 0.5Kva and not more than 10Kva.
- The metal housing of the isolating transformer is connected with the local equipotential connection terminal plate.
c) 外接报警显示和测试仪 Alarm and displaying device
- RS485 接口
- External alarm and display devices for insulation monitors
- Digital tube displays insulation resistance and load status
- Buzzer sound alarm and mute button
- RS485 interface
- Chinese panel
- The waterproof panel is easy to clean
- Real-time monitoring of isolating transformer load condition and transformer winding temperature.
- A green light indicates normal operation;
- A yellow light lights up when the insulation resistance drops to the minimum setting value.This light indicator should not be eliminated or disconnected;
- When the insulation resistance drops to the minimum setting value, the sound alarm action.The audible alarm can be cancelled;
- When the fault is cleared and restored to normal, the yellow signal should go out.Can monitor overload overheating of medical IT transformers
IT isolated power system has the following advantages:
1) The shock voltage and leakage current are too small to cause electric shock or other electrical accidents;
2) In case of ground fault of the power supply system, the circuit protection device will not cut off the power supply, which ensures the uninterrupted power supply.
Precautions for using IT to isolate power systems.
1）IT 系统不能引出中性线，因为在中性线发生接地故障时绝缘监测仪无法故障报警，系统将变为 TT 或 TN 系统，再发生相线接地故障，则系统电源将被切断，可能会产生严重后果。
1) The IT system cannot lead out the neutral wire, because the insulation monitor cannot give an alarm when the neutral wire has ground fault, and the system will
If TT or TN system is changed, the power supply of the system will be cut off if the phase-to-ground fault occurs again, which may have serious consequences.
2）由于 IT 系统发生一相接地时，另两相对低电压将升高，因此对电气线路及电气设备绝缘水平要求较高。
2) The other two relatively low voltages will increase when the IT system is connected to the ground, so the electrical circuits and electrical equipment are insulated, the level is high.
3）IT 系统的绝缘监测仪需通过 PE 线接地，因此其与PE线的连接必须可靠。
3) The insulation monitor of the IT system needs to be grounded through the PE wire, so its connection with the PE wire must be reliable.
An introduction to the Acrel Medical IT Isolation power system
With the wide application of electronic medical equipment in the field of hospitals, leakage current poses more and more threats to patients, especially in those places where life is crucial. During surgery or under anesthesia, a variety of electrodes and sensors are directly inserted into the body of patients, and tiny leakage current may lead to death by electrocution.In addition, some medical equipment is used to maintain the life of seriously ill patients, once the equipment power failure, it will also pose a threat to the lives of patients.Therefore, the electrical design of this special place for medical treatment should be carried out in strict accordance with national standards and norms.
Ankore medical IT system insulation monitoring fault location device and system are suitable for the hospital operating room, ICU(CCU) ward and other important places, can provide safe, continuous, reliable power supply solutions for such places.
7.2 医用隔离电源系统Medical isolation power system
The medical Isolated power monitoring system is used to centrally monitor the health of the medical IT system in all medical 2 locations in the medical building.The centralized monitoring system can be set up in the hospital electrical operation and maintenance personnel on duty room, also can be integrated in other power monitoring system, monitoring by professional electrical personnel, once a set of IT systems fail, electrical maintenance personnel can in time to make a judgment, and according to the site condition for processing.
系统拓扑图 System topology
7.3 软件功能Software functions
Acrel medical isolated power monitoring system is based on the touch screen software design, the software has a variety of functions such as remote measurement, remote parameter setting and remote self-inspection, which provides a powerful system integration tool for the centralized monitoring of the isolated power system in 2 types of hospitals.The main functions of the software are as follows:
Primary diagram and field distribution display
The system has the function of one-time diagram and field distribution diagram display, can intuitively understand and timely find the alarm location or area of IT power supply system, so as to facilitate professionals to timely arrive at the scene for fault troubleshooting;
Real-time data acquisition and display
The parameters of each isolated power system are collected by means of insulation monitoring instrument and insulation fault location instrument installed in each isolated power system.The collected data will be displayed on the interface of the monitoring system in real time. These monitoring parameters include insulation resistance of IT system to ground, transformer load current, transformer winding temperature and insulation fault circuit, etc.
■ 故障报警Fault alarm
All kinds of faults in the medical isolated power system, such as insulation fault, overload fault, overtemperature fault and connection break fault, are uniformly processed and recorded, and information such as fault type, monitoring value, fault location and fault occurrence time can be displayed directly on the display interface.At the same time start the monitoring system sound and light alarm system, timely remind the relevant personnel, fault treatment.Among them, the sound alarm signal can be manually eliminated.
■ 远程参数设置和查询Remote parameter Settings and queries
Through the system, all kinds of alarm parameter thresholds of insulation monitors in medical isolated power supply systems can be adjusted and set remotely according to requirements, and these alarm parameter values can also be checked at will.The parameters include insulation alarm value, load current alarm value and isolation transformer temperature alarm value
■ 图形显示功能：Graphic display function:
7.4 安科瑞医用IT系统四件套选型 Acrel medical IT system four-piece set selection
The system can be in the form of a curve, showing the insulation status of each set of isolated power supply system, load status, as well as the isolation transformer temperature rise status, as well as their change trend, in order to facilitate the sub-managers to understand and analyze the operating changes of each power supply system, targeted maintenance and maintenance of some systems.
Insulation monitoring products of medical IT system (a four-piece set) include AITR S series medical isolation transformer, AIM-M10 medical intelligent insulation monitor, abakh 0.66P26 current transformer and AID series (AID10, AID150) external alarm and display instrument, etc., as shown in Figure 5.
Name and type
AITR series medical isolation transformer
AITR系列隔离变压器专用于医疗IT系统，铁芯采用日本进口的硅钢片叠加而成，损耗很小。绕组间采用了双重绝缘处理，并设有静电屏蔽层，减少了绕组间的电磁干扰。线包内安装了 PT100 温度传感器，用于监测变压器温度。整体采用真空侵漆处理，增加了机械强度和抗腐蚀性。产品具有很好的温升性能和很低的噪声。AITR series isolation transformer is specially used in medical IT system, and the core superposition adopts the silicon steel sheet imported from Japan, which has very small losses. 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 windings 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-M10 medical insulation monitoring device
AIM-M10 medical insulation monitoring device is special for medical IT system.It is used to monitor the insulation status of IT system.It can send out alarm signals when insulation fault occurs.
The AKH-0.66P26 type current transformer is the protective current transformer which the maximum measurable current is 60A and the transformation ratio is 2000:1. The current transformer is directly fixed inside cabinet by screwing
AID series external alarm and displayer
It is suitable for wall installation embedded and can monitor 1 AIM-M10 insulation monitor. It has sound and light alarm function of insulation, overload, overtemperature and equipment failure, and RS485 communication.
LCD display, RS485 bus, centralized monitoring of up to 16 SETS of AIM-M10 medical intelligent insulation monitor data, sound and light alarm can be remote. The AID150 can also monitor data from multiple AIM-R100 residual current monitors.
Table 1 Insulation monitoring products of medical IT system (four-piece set)
Product information of IT isolated power supply system of Bender, Germany.
Wang Houyu on Applied Building Electricity of IT System, 2008 (11) : 3-7.
Application of Liu Jianjun and IT Isolated power Supply system in Shenzhen Third People's Hospital.
Design and Application Manual of Ankore Enterprise Microgrid.2019.11 edition
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2023.06.07 04:53 NundeeNic Aggression?
To preface, I’ve had my created gecko since he was a baby. I’ve had him for about 3 years now and handle him regularly. He’s never shown any signs of aggression. I just upgraded him to a Bioactive tank about a week ago. The day of, moving him into his new tank he bit me really good, tearing my skin open but not drawing blood. I did notice he was fired at that time. Well one week later, he is still often darker in color and lunges at me anytime my hand is near him, even just to change his food or water bowl. Is this normal? Does he not feel safe in his new enclosure?submitted by NundeeNic to bioactive [link] [comments]
I’m going to try to add more pothos up higher so that he has more hiding spots. I’m thinking he just doesn’t have as much coverage as before maybe? Any input I’d appreciated. The video is of him exploring the first day
2023.06.07 04:50 Chemical_Rub6986 Pothos root rot?
My pothos that has been rooting for weeks is developing what looks like root rot. I change the water every 3 days and use room temp purified water. I also mist it regularly and it gets lots of indirect sunlight. I have read online that they do enjoy a liquid fertilizer so I was planning on starting that. I also was going to get a bubble stone to aerate the roots. Do I need to cut these off? I waited so long for roots to start sprouting I don’t want my cutting to die before I get to plant it 😭😭😭submitted by Chemical_Rub6986 to plantclinic [link] [comments]
2023.06.07 04:43 DipDipHorray Help! I’ve been seeing someone who has two partners and figuring out how we all fit together.