
	Where results make sense

Topic: Static inverter plant

Related Topics

HVDC

In the News (Fri 17 Feb 12)

EXECUTIVE POWER

Iran

ANALYSIS

Pakistan

Family compact

	UPS Systems in Industrial Applications
		Since the inverter supplies power to the load at all times and the battery is in parallel with the inverter input, when a power failure occurs the rectifier/charger merely stops operating and the battery picks up the load instantly, resulting in no power interruption at all.
		Regulating the DC bus to the static inverter improves reliability by limiting the inverterÅs exposure to low voltage excursions (since voltage and current have inversely proportional relationships, low voltage on the inverter input means increased input current which can cause premature thermal failure of the semiconductors in the inverter bridge circuit).
		The static transfer switch is a critical component with respect to load "uptime" as it allows an unbroken transfer of the load from inverter to alternate source and vice versa in the event of overcurrent, inverter failure or removal of the UPS from service for maintenance.
	www.solidstatecontrolsinc.com /techhpapers/papers/upsindustrial.html (3935 words)

	Static inverter plant -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-19)
		A static inverter station is the terminal equipment for a (Click link for more info and facts about high voltage direct current) high voltage direct current transmission line, in which direct current is converted to three-phase alternating current, and, usually, the reverse.
		The three-phase alternating current switchgear of a static inverter station is similar to that of an ac (A subsidiary station where electricity is transformed for distribution by a low-voltage network) substation.
		The area required for a static inverter plant with a transmission rating of 600 megawatts and a transmission voltage of 400 kV is approximately 300 x 300 metres (1000 x 1000 feet).
	www.absoluteastronomy.com /encyclopedia/s/st/static_inverter_plant.htm (1015 words)

	Encyclopedia: Static inverter (Site not responding. Last check: 2007-10-19)
		A static inverter station is the terminal equipment for a high voltage direct current transmission line, in which direct current is converted to three-phase alternating current, and, usually, the reverse.
		While mercury arc rectifiers are individually connected, with thyristor static inverters many thyristors are assembled into a module, the thyristor tower.
		The three-phase alternating current switchgear of a static inverter station is similar to that of an ac substation.
	www.nationmaster.com /encyclopedia/Static-inverter (1249 words)

	Kontek (Site not responding. Last check: 2007-10-19)
		Remarkable at Kontek is that, in contrast to similar plants, as the Baltic-Cable and the Konti-Skan also all land sections of the line on Falster, Sealand and Germany with a total length of 119 are implemented as underground cable.
		The cable of the Kontek begins in the static inverter plant Bentwisch, lain south of the community.
		In 2002 the static inverter plant Bentwisch was extended to a 380kV/110kV-substation and connected by a 110kV-line with the old 220kV/110kV-substation.
	www.worldhistory.com /wiki/K/Kontek.htm (655 words)

	POWER AND POWER FACTOR IN AN AC CIRCUIT
		Static power factor correction should provide capacitive current equal to 80% of the magnetising current, which is essentially the open shaft current of the motor.
		Static correction is commonly applied by using on e contactor to control both the motor and the capacitors.
		Static Power factor correction can be calculated from known motor characteristics for any given motor, either the magnetising current and supply voltage (method 1) or half load efficiency and half load power factor(method 2), or, as a last resort, table values can be used.
	www.geocities.com /vijayakumar777/powerfactor/powerfactor.html (4198 words)

	"What is Power Factor?
		Static correction is commonly applied by using one contactor to control both the motor and the capacitors.
		Many inverter manufacturers quote a cos Ø of better than 0.95 and this is generally true, however the current is non sinusoidal and the resultant harmonics cause a power factor (KW/KVA) of closer to 0.7 depending on the input design of the inverter.
		It is recommended that capacitors should be at least 75 Meters away from inverter inputs to elevate the impedance between the inverter and capacitors and reduce the potential damage caused.
	www.tvss.net /pq/pf.htm (2742 words)

	Encyclopedia :: encyclopedia : Static cling (Site not responding. Last check: 2007-10-19)
		Static cling is caused by static electricity often in a clothes dryer.
		Antistatic agents are used to make the surfaces slightly conductive, which reduces or prevents the static charge buildup.
		A neat trick which children (and many older people) find very funny is to rub a balloon against one's shirt to give it a static charge and then throw it towards the ceiling, where it can stick for hours.
	www.hallencyclopedia.com /topic/Static_cling.html (156 words)

	2.0 Theory of Operation
		Fuses are installed in series with the static bypass circuit to ensure reliable overload protection in the unlikely event of a catastrophic output condition (for example, a dropped wrench) electrically close to the output of your UPS system.
		The inverter is a solid state device that converts the DC output of the rectifier/charger or the battery to AC power.
		The inverter is capable of sustaining full output voltage ±2% of the nominal voltage) for up to 150% overload at the output for as long as 30 seconds without reducing the output voltage.
	www.liebert.com /products/english/products/3phase/ser600/60Hz/opmanual/html/sl_30021.4.htm (3191 words)

	Circuit to inhibit voltage and current returns to the electric power distribution line in an inverter-type power plant ...
		The static switches may be centralized (located on the multiple unit which connects in parallel the inverters to the utilizing units) or remotely located (i.e.
		During normal operations (the load being fed by inverters) and due to a fault in the system, it is possible that the second set of static switches unduly assume the configuration of "closed", so that the distribution line is connected to the inverters.
		In the known power plants, due to faults in the static switches or in the supervisory control circuit, the voltage and current returning to the electric distribution line is inhibited by a current return device connected in series to the electric distribution line.
	www.freepatentsonline.com /5012122.html (1790 words)

	Probing the Mysteries of the Inverter, Part One (Site not responding. Last check: 2007-10-19)
		Induction motors, for example, are designed to work on the purest type of AC current—the sine wave—and when the transistors in an inverter deliver a square wave (which represents at a minimum, a distortion of 40% from the sine wave) to one of these devices, the motor must work harder to overcome the counterproductive currents.
		Inverter design and selection is further complicated by the fact that not all AC loads react equally to alternating voltage.
		The frequency of a self-commutated inverter is locked onto the line frequency by phasing the operation of the electronic switches with the AC input.
	www.motherearthnews.com /library/1983_March_April/Probing_the_Mysteries_of_the_Inverter__Part_One (3725 words)

	INTRODUCTION
		The inverter's output voltage shall be maintained for at least 1/2 cycle during an input bridge failure to insure a zero-break static transfer to the bypass source.
		The output frequency of the inverter shall be controlled by a crystal controlled oscillator, which can be operated as a free-running unit or as a slave for synchronized operation with a separate AC source.
		The static switch shall be a naturally commutated, high speed transfer device provided as an integral part of the U.P.S. The control of the unit shall provide an automatic or manual uninterrupted transfer of the load to the bypass.
	www.solidstatecontrolsinc.com /products/html/SSSPEC.html (2723 words)

	L-3 Communications/Power & Control Systems Group - Inverters
		Originally designed for surface ship service, this lightweight Inverter family has been specifically tailored to meet the environmental requirements of railway applications (vibration, temperature, etc.) which are almost as strong as for military purposes.
		L-3 Power Systems Group's static inverters provide a no-maintenance, solid-state solution to the conversion of DC power to the AC power required to operate motors and solid-state loads.
		Designed to replace rotary motor-generator sets, L-3 Communications Power Systems Group's static inverters provide a no-maintenance, solid-state solution to the conversion of DC power from the aircraft bus, to the AC power required to operate motors and solid-state loads.
	www.powerparagon.com /products_inverters.html (908 words)

	Trace power inverter
		The solar inverter is ac circuit dc inverter by frequency inverter solar power inverter to grid tie inverter of dc/ac power inverter or ok4u inverter by dcac inverter, panasonic inverter microwave, heart inverter.
		lcd inverter is inverter generator etc. statpower inverter, voltage inverter, phase inverter statpower power inverter, coleman inverter powermate is cherokee power inverter and rv inverter is 12 volt inverter and pallet inverter, car inverter, xantrex inverter and dc/ac inverter.
		cmos inverter is inverter charger is galaxy inverter and circuit diagram inverter or grid inverter.
	www.ics-repair.com /ad/part1/trace_power_inverter.htm (321 words)

	HVDC Italy-Corsica-Sardinia - Encyclopedia, History, Geography and Biography
		The HVDC Italy-Corsica-Sardinia (also called SACOI; Sardinia-Corsica-Italy) is used for the exchange of electric energy between the static inverter plant Suvereto on the Italian mainland, the static inverter plant Lucciana on Corsica and the static inverter plant Codrongianos on Sardinia.
		Static inverters for this line, which can transfer a maximum power of 200MW at a voltage of 200kV are in use today.
		In contrast to most other installations for high voltage direct current transmission this system is a multipoint system making thus possible the energy exchange between several static inverter stations.
	www.arikah.net /encyclopedia/HVDC_Italia-Corsica-Sardinia (251 words)

	Etzenricht
		The two static inverters are in a 13 meters high hall with 430 square meters of surface area, which was built in a combination of local and finished concrete building method.
		Each static inverter consists of 432 thyristors, which are put in six thyristor towers arranged in a row.
		At both ends of the hall there are three bays for the accommodation of the static inverter transformers, which are built as single-phase units.
	www.brainyencyclopedia.com /encyclopedia/e/et/etzenricht.html (548 words)

	MGE Topaz DC to AC Inverters
		MGE's Topaz S4 N+1 scalable DC to AC inverter is the latest addition to the Topaz inverter line recognized as the industry standard for critical AC power by many of the world's leading telecom companies.
		The S4 is one of the only inverters designed to meet NEBS standards assuring compatibility with all devices in a telecom environment.
		The conduit junction box is factory mounted to the back of the inverter module, easing conduit landing requirements and simplifying installation of rear or side mounted cable entry systems.
	www.inotek.com /Catalog/topaz2pc.html (682 words)

	Emerson Network Power - News & Events - Archived News - Miniflex
		When the Static Transfer Switch is employed, the AC output of the inverters passes through the switch.
		The user may choose to feed all inverter modules from the single DC bus bar that is attached to the back of the cabinet at the factory.
		This allows each inverter module to be connected to a separate breaker/circuit from the battery distribution bay so that loss of one breaker or circuit does not shut down the entire system.
	www.emersonnetworkpower.com /energysystems/news-events-archive-2004-09-19-miniflex.asp (713 words)

	A typical UPS system, which may be referred to as, Uninteruptible power supplies, Uninteruptable power supplies, ... (Site not responding. Last check: 2007-10-19)
		The connection between the rectifier/battery and inverter is often known as the dc busbar, or dc bus.
		As the load is powered from the inverter under normal circumstances it is well protected from input supply aberrations because the rectifier and inverter act as a barrier to mains borne noise and transient voltage excursions, in addition to providing a well regulated output voltage.
		While feeding the overload under these circumstances the inverter operates in a current-limit mode and its output voltage may be reduced deliberately, but in most cases this is preferable to total power loss and of course conditions will return to normal if the overload is cleared during the allotted time.
	powercontinuity.co.uk /howupswork.htm (3369 words)

	Sakuma, Shizuoka -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-19)
		As of 2003, the town has an estimated ((statistics) the entire aggregation of items from which samples can be drawn) population of 5,625 and a (The amount per unit size) density of 33.38 persons per (Click link for more info and facts about km²) km².
		Near Sakuma in 1965 the first (Click link for more info and facts about high-voltage direct-current) high-voltage direct-current transmission in Japan was built in form of a back-to-back-system for coupling the two parts of Japanese electricity mains, which are operated at 50 Hz and 60 Hz.
		As static inverters, (A heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures) mercury (Water at boiling temperature diffused in the atmosphere) steam (A car that is powered by electricity) electric (Electrical device that transforms alternating into direct current) rectifiers were used.
	www.absoluteastronomy.com /encyclopedia/S/Sa/Sakuma,_Shizuoka.htm (162 words)

	Lydd -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-19)
		David Denne of the family of that name from Lydd was Deputy Lieutenant and Justice of the Peace for the County of Kent, and formerly Captain of the East Kent and Cinque Ports Yeomanry, and Bailiff of the town Corporation 23 times.
		There is a nuclear power plant at Lydd.
		On the site of the nuclear power plant there was also until its replacement to a more modern powerful facility in the mid of the eighties the (Click link for more info and facts about static inverter plant) static inverter plant of (Click link for more info and facts about HVDC Cross-Channel) HVDC Cross-Channel.
	www.absoluteastronomy.com /encyclopedia/L/Ly/Lydd.htm (813 words)

	Public Lessons Learned Entry: 0662
		The static switch is provided as a to draw-out assembly so that the static switch can be electrically isolated for maintenance.
		The static switch is provided as a draw-out assembly so that the static switch can be electrically isolated for maintenance once the load has been transferred to the alternate AC power.
		(The static switch is also capable of providing fault clearing current to the load when the alternate AC power is available.) Retransfer of the load is accomplished by automatically synchronizing the UPS to the alternate source, paralleling the inverters with the alternate source, and then disconnecting the alternate source.
	www.nasa.gov /offices/oce/llis/0662.html (2407 words)

	DCAC Inverter meets NEBSTelco standards., MGE UPS Systems
		Delivering six 9's of reliability, the new S4 inverter is a scalable solution specifically designed to meet the demanding power requirements of today's central offices, wireless base stations and ultra-critical servers.
		The S4 is the first inverter system designed to meet the rigorous NEBS standards, critical for telecom switches and other zero downtime applications.
		In addition, to minimize noise in large telecom battery plants, the S4 features a high grade noise filter which limits ripple current on the battery and ensures that radiated and conducted EMI meet strict industry standards.
	news.thomasnet.com /fullstory/7840/612 (1338 words)

	HVDC - Engineering - a Wikia wiki
		At smaller transmission distances the losses in the static inverters may be bigger than in an AC powerline, and the cost of the inverters may not be offset by reductions in line construction cost.
		A back-to-back station is a plant in which both static inverters are in the same area, usually even in the same building and the length of the direct current line is only a few meters.
		The controllability of current-flow through HVDC rectifiers and inverters, their application in connecting unsynchronized networks, and their applications in efficient under sea cables mean that HVDC cables are often used at national boundaries for the exchange of power.
	engineering.wikia.com /wiki/HVDC (3569 words)

	2.0 Theory of Operation
		Fuses are installed in series with the static bypass circuit to ensure reliable overload protection in the unlikely event of a catastrophic output condition (e.g., a dropped wrench) electrically close to the output of your UPS system.
		The static bypass consists of a static bypass switch and bypass power switching devices (motor operated circuit breakers).
		The motor-operated system bypass circuit breaker (SBB), wired in parallel with the static switch, automatically closes within 200 milliseconds after the load is transferred to the bypass power source, removing the static switch from the power flow.
	www.liebert.com /products/english/products/3phase/ser600/60Hz/opmanual/html/sl_30023.4.htm (3869 words)

	World War 1 and 2 - Electrode line
		Under an electrode line one understands the line connection from the static inverter plant of a high voltage direct current transmission from to the grounding electrode (cathode or anode).
		The grounding electrode is for the prevention of electro-chemical corrosion and for the avoidance of electromagnetic influence always some kilometers away from the static inverter station, so for this a separate line connection is necessary.
		This can be implemented depending upon situation of the electrode (ashore or in the sea) as ground cables as overhead line or as combination of ground cable and overhead line.
	www.worldwardiary.com /history/Electrode_line (126 words)

	Reference.com/Encyclopedia/HVDC Italy-Corsica-Sardinia
		The HVDC Italy-Corsica-Sardinia (also called SACOI; Sardinia-Corsica-Italy) is used for the exchange of electric energy between the static inverter plant Suvereto on the Italian mainland, the static inverter plant Lucciana on Corsica and the static inverter plant Codrongianos on Sardinia.
		Static inverters for this line, which can transfer a maximum power of 200 MW at a voltage of 200 kV are in use today.
		In contrast to most other installations for high voltage direct current transmission this system is a multipoint system making thus possible the energy exchange between several static inverter stations.
	www.reference.com /browse/wiki/HVDC_Italy-Corsica-Sardinia (263 words)

Try your search on: Qwika (all wikis)