If you want to ship via YANWEN express, it is no customs fee, 7-10 working days for delivery. Bitte Einloggen zuerst, wenn Sie zu einem spateren Zeitpunkt bearbeiten oder verwalten Bewertungen von selbst hochgeladen werden soll. There has been considerable debate in recent years as to the emergency electrical power needs of freestanding, outpatient ambulatory surgical centers (ASCs).
Is there a standard that states ASC's should not continue doing surgery when running on the generator?
I am an electrical plan reviewer in Texas and I was tasked with reviewing a freestanding emergency clinic. Take this weekly quiz to test your knowledge of the 2014 National Electrical Code requirements. Sponsored Content — Acuity Brands helps transform everyday spaces into exceptional environments that are easy to configure, install and maintain. Reliability and availability of medium-voltage equipment is critical in virtually all applications; any failure will generally disable a relatively large portion of the plant. The energy released during an arc flash event can result in severe damage to personnel, equipment, and property.
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Press the switch five seconds to start If you want to use LED for illumination and select the status ( light, strobe, SOS, close) by pressing the switch to transform. Stellen Sie bitte sicher, dass Sie Ihre Beurteilung ausschlie?lich uber dieses Produkt erteilt. This may seem odd when you consider that emergency power requirements for health-care facilities have been codified since the early 1960s via a National Fire Protection Association (NFPA) standard on the subject. The plans indicate an essential power system that includes a critical care branch, life safety branch, and an equipment branch with manual transfer switches for each. Either way, take our new trivia challenge and test your knowledge about some pretty random stuff!
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Originally a standard just for hospitals (designated NFPA 76A, Standard for Essential Electrical Systems for Hospitals), the document's scope was expanded to all health-care facilities in 1971, thus making it applicable to ASCs.
For some remote area, if you do not want to pay remote fee, we can send it to you by EMS too. In 1984, this document was incorporated along with 13 other health-care documents developed by the NFPA Technical Committee on Health Care Facilities into what is now NFPA 99, Standard for Health Care Facilities. Is the use of a portable gen-set allowed for this type of installation given that the NEC allows 10-second connection for emergency start-up? I am also concerned about the 10-second start-up with a portable generator and the manual transfer switches that are shown on the plans as to whether or not they meet the NEC requirements. For some special function, you can take the photo or video and send us to check if you operate it rightly. Although a few simple answers could be provided, it was observed at a recent conference in California (organized by the authors of this article) that the needs of ASCs are not identical — nor is one emergency power supply system configuration of the essential electrical system practical or possible for all ASCs. This situation involves more than just the equipment that will be supplying electrical power when normal power is interrupted.
The extent of power, the quality of the power, and location of the power source are just a few of the many issues that need to be reviewed. If the load on the essential electrical system is less than 150kVA, NFPA 99 states that a facility can install just one transfer switch. It also needs to be noted that, with only one transfer switch for transferring power from the normal source to emergency power source, its failure essentially shuts down the delivery of power from the emergency power supply. Even if the essential electrical load is less than 150kVA, an ASC can install more than one transfer switch.
If the essential electrical load is more than 150kVA, an ASC with critical patient care areas, or those using electrical life-support equipment, would have to follow the requirements for a Type 1 EES, as listed in NFPA 99, Chapter 4.
Unlike a hospital (with no independent tenants), the wiring of the ASC portion would have to meet more stringent requirements, including the installation and coordination of ground-fault interrupters (GFIs). The number of transfer switches would increase, because NFPA 99 requires a transfer switch for each branch of the emergency system and a transfer switch for the equipment system, which could entail three transfer switches (one for non-delayed items, delayed-automatic items, and delayed automatic or manual items).
All of these possibilities must be reviewed before determining how many transfer switches (at minimum) will be required.
In the '60s, the mechanics of starting an engine, then connecting it to a generator and the power becoming relatively stable, took about 7 to 8 seconds.
This time interval (from recognizing loss of normal power to transfer to emergency power source, using engine-generator systems that require some time before being able to supply electrical power) has not been changed since then.
Some of these electrical devices are medical devices that either provide life-support functions to patients connected to them or produce extremely vital, real-time information to doctors while treating patients. One method is the inclusion of a battery within a device that allows the device to continue operating normally for some (short) period of time when regular power is interrupted. Another is the placement of an uninterruptible power supply (UPS) between the device and normal power circuitry. These methods are not an “emergency power source of the essential electrical system” as discussed in this article; however, they do provide for continuous power (on a limited time basis) to devices until power from the alternate power source is connected to the distribution system of the essential electrical system. Variations of the above designs have been developed with the intent of having certain devices powered continuously when normal power is interrupted. There are now quite a few ways to generate AC electricity — from engines connected to generators (the traditional way) to batteries connected to DC-to-AC converters to gas turbines connected to generators — just to name a few. There are also a variety of engine types (diesel, spark-ignited, and flywheel, among others). For health-care facility emergency power purposes, the main performance criteria for whatever method used has been the necessity of supplying 60-Hz (AC) power to the electrical loads on the essential electrical system within 10 seconds, and supplying this power for some period of time without requiring a new supply of fuel. Because emergency power became necessary in the later '50s, the most common method used has been the engine-generator configuration. Whatever method is used, it has to meet the 10-second (max) criteria of restoration of power.
When requirements for essential electrical systems were first developed, the model used was normal power being supplied by an electric utility company power station through electric wires to the facility. The alternate power source model was an engine-generator system installed on the property of the health-care facility (if a big system was necessary, such as for a hospital).

Later, it was permitted to have an engine-generator system (located on the facility's property) supply normal power and have the local utility company be the alternate power source (very few health-care facilities use this method). If an engine-generator system onsite is used for normal power, but the utility company is not reliable enough as an alternate source, then a second engine-generator system must be installed on the premises.
However, the Technical Committee responsible for essential electrical system requirements was very clear in requiring at least one source of electric power to be located on the property of the health-care facility. This requirement was an assurance that some power would be available if external power for the facility was interrupted.
Furthermore, the location of the emergency power source on the property of the ASC, or within a building where the ASC offices are located, was situated so it is protected from rain, snow, floods, winds, vandalism, etc., if located outdoors.
If located within a building, then it must also be protected from flooding, sewer backup, a fire within the building, vandalism, etc. The length of time an emergency power source has to be able to provide power without being refueled has generally remained the responsibility of governmental authorities, but other groups and organizations have an influence on the minimum time. If Joint Commission on the Accreditation of Healthcare Organization (JCAHO) accreditation is mandated by a state, or patients are insured through the Center for Medicare & Medicaid Services (CMS), the minimum time required by these two entities need to be obtained.
For ASCs that do not use electrical life-support equipment or do not have patient care areas meeting the definition of “critical care area,” NFPA 99, Chapter 14 states that a Type 3 essential electrical system can be installed. For ASCs that do use “electrical life-support equipment,” or have “critical care area(s),” NFPA 99, Chapter 14 states that a Type 1 essential electrical system is to be installed. However, Type 1 system requirements do not specify a minimum number of hours that the essential electrical system has to be able to supply power without having to be refueled or recharged. With respect to life safety criteria and minimum operating times of emergency power to safely exit any building, NFPA 101 requires power for emergency lighting, fire alarm systems, etc., to be able to function for a minimum of 1? hours upon loss of normal electrical power.
A May 4, 2007, CMS letter to State Agency Directors listed various conditions under which a battery system could be used as the alternate power supply of the EES.
While no specific minimum run time (without refueling) was listed, some consultants recommend 4 hours. Each ASC needs to learn what minimum operating time it must meet in order to satisfy all regulatory authorities and non-governmental organizations. The power produced by emergency power sources in ASCs has to meet most of the same quality criteria as the main power source, because there will be patients who will be at the same risk as those in hospitals — namely, if inhalation anesthesia is administered, there will be a patient(s) on electrical life-support equipment. Other concerns are those resulting from spikes and harmonics on the power line, and those associated with the proper grounding between the normal and emergency power system. For ASCs located in commercial buildings, it may also be necessary to protect critical equipment from abnormal power variations with appropriate power quality equipment.
While NFPA 99 requires testing the generator system with all expected loads connected, additional tests (dropping the largest loads and then reconnecting them simultaneously) might be useful to learn if the generator system can handle the sudden load. A requirement for battery-operated lighting units was proposed and accepted for the 1996 edition of NFPA 99. The loss of power even for 10 seconds was becoming intolerable, considering the hazards it exposed many patients to, according to the anesthesiologists.
Anesthesiologists argued that having at least some lighting turn on automatically would greatly help them and others working in the operating room tend to the basic needs of patients, prevent tripping over cords, avoid knocking equipment over, and maintain the sterile zone. It would also eliminate the need for anesthesiologists or others to find a flashlight in the dark, and then hold it while tending to patients.
They are an interim operational mechanism for supplying some measure of lighting in an operating room when power to general lighting is interrupted for any reason. This interruption does not include the deliberate switching of a wall switch (for general lighting) from on to off in the operating room. These lighting units do have to be installed in accordance with NFPA 70, because they need to be connected to the circuits of general lighting in order to monitor them for power. Congress requires CMS to use NFPA 101 as the reference document on matters relating to life safety.
CMS can inspect hospitals, ASCs, etc., that accept payment by CMS for patient services, or it may have the Joint Commission on the Accreditation of Healthcare Organizations (JCAHO), Accreditation Association of Ambulatory Health Care (AAAHC), or American Association for Accreditation of Ambulatory Surgical Facilities (AAAASF) do the inspection for them.

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