Sensor free standing focsfs offers significant improvements over conventional cts and facilitates direct introduction of digital process bus in hv substations. One paper mcqs solved preparation material all in one for ppsc fpsc nts pts ots. Make sure you check with the manufacturer if you are not sure. The presence of impurities, in both naturally occurring and synthesized samples, has hindered the study of its optical properties in the past. In most but not all cases the white wire is the hi side and goes to the hi input on the meter. You can choose from more models with more features than ever before. Xlsx to pts, xls to pts, sxc to pts, pdf to pts, csv to pts, dbf to pts, dif to pts, ods to pts, pts to pts, pxl to pts, sdc to pts, slk to pts, stc to pts, vor to pts, xlt to pts. Fiber optics fiber optic structured cabling services in arizona. The most common usage of instrument transformers is to operate instruments or metering from high voltage or high current circuits, safely isolating secondary control circuity from the high voltages or currents. Cts, or current transformers, and pts, or potential transformers are used in metering to step down current and voltage to safer and more manageable levels. Optical fiber transmission uses wavelengths that are in the nearinfrared portion of the spectrum, just above the visible, and thus undetectable to the unaided eye. Ct is used to measure a current, and pt is used to measure voltage, ct can be used for metering and protection purpose in substations while pt is used to measure voltage. Quality of service superior 247 customer service, remote monitoring capabilities, comprehensive training, and preventative maintenance programs. The 16mm 288 series mechanical encoders are available with 2bit binary, 4bit gray, and 4bit hexadecimal output.
The basic material used in the manufacture of optical. Some have a white dot, some have a label others have some other marking. Mid20 assessment and outlook for the north american market. Optical current transformer is an alternative to the existing conventional current transformers, providing an advanced measurement solution for both metering and protection applications, based on a cuttingedge patented optical sensing technology. Mar 14, 2014 optical current transformer is an alternative to the existing conventional current transformers, providing an advanced measurement solution for both metering and protection applications, based on a cuttingedge patented optical sensing technology. Options include detents to provide positive actuation feel for each position change and a push to actuate momentary switch.
Engineers discovered they can use transformers not just for converting voltages for transmission, but to grab a sample of the line for use with meters that would otherwise burn up under the full. All the individuals who are currently preparing for some exam or even just want to improve their general knowledge can attempt this online quiz for free to do so. In both examples shown, the voltage transformer and current transformers have the same ratio so that, after combining, the ratio of voltage to current stays the same, meaning that the impedance of the side port is the same as the main line. This causes metering pts to saturate at lower secondary voltage outputs saving. Voltage transformer an overview sciencedirect topics. Gom inspect is free mesh processing and inspection software for dimensional analysis of 3d point clouds from white light scanners, laser scanners, cts and other sources. Basic information technology info quiz 1 online mcqs questions test. Now what if the service that we are metering is a 480v service and we are using pts. Free online spreadsheet converter convert pts to xls, sxc. Private pilot practical test standards for lighterthanair balloon, airship faas808117 pdf june 1996.
In this work, we prepare largescale, uniform pts films in bulk to twodimensional form through the thermally assisted. Instrument transformers will transmit the signal to the metering and protective relaying instrumentation, with the purpose of protection of important equipment. Current transformers ct are a series connected type of instrument. Cts mechanical encoders provide direct interface to your digital circuitry without signal conversion. Cooperite, or platinum sulfide pts, is a rare mineral that generally exists as microscale, irregularly shaped crystallites.
Fgas free insulation with lowest requirements on training, transport. Surfacestate assisted carrier recombination and optical. Where can i find more information and details on optical cts and. Page 11 of figure 9 291p1z00aa 64 ppr, with schmitt trigger, with locating lug. Performance assessment of advanced digital measurement and. Hybrid instrument optical cts for smart grid application c. Fortunately, most cts perform much better than this, with 0. Typical optical transmission wavelengths are 850 nm, 10 nm, and 1550 nm. One paper mcqs solved preparation material all in one for.
Emerging technologies for dielectrics sf6 gas, esters, synthetic oils, etc g. Free online spreadsheet converter convert pts to xls. As a leader in the fiber optic industry, corporate technology solutions provides expert design, engineering, consulting, and project management of your entire fiber optic network needs. The first phase the first phase of lightwave systems operated near 850 nm and used gaas semiconductor lasers with multimode fibres. Digital instrument transformers, optical cts and pts b. Uet entry test preparation mcqslearn free videos youtube. Complete line of horizontal beam and vertical beam optical comparators. Instrument transformers will operate successfully under many atmospheric conditions and transients, and switching overvoltages. Ease of use intuitive graphic user interface, reduced footprint with recessed stations, broad portfolio to meet every customers needs. Before installing your fiber optic network, one of the most important steps that you can take to ensure that data will be transmitted properly is to test your cables and connectors for continuity. Both lasers and leds are used to transmit light through optical fiber.
Optical current transformer oct linkedin slideshare. Fiber optics installation in tempe, az industrial fiber optics. For this example lets assume we are metering a 480v three phase 4 wire wye service by using 4005 cts and 2. This software is entirely free to use and results can be shared amongst departments, vendors, andor with customers for faster communication to help speed up the decision. The optical transmitter converts the rf gps signal to an optical signal. A power supply that powers the optical transmitter can also power the gps antenna via a voltage on the inner. Tesat can offer appropriate laser terminals for a wide range of applications. Where can i find more information and details on optical cts and pts, as well as architecture used in digital substations.
Our payment security system encrypts your information during transmission. Their task is to slightly increase and decrease the refractive. In every phase bl increased initially but began to saturate as the technology matured. Test 4 on triangles 100 pts applied statistics for engineers and scientists levine solutions.
What defines precision technology services and cardinal contact lens from other contact lens manufacturers is the hands on training we give to our customers. At arizona state university, a highcurrent generator was developed to produce up to 1,200 a. Current transformer errors and transformer inrush as. The innovative optical ct from trench is also suitable for highest voltage levels. To order, the easiest route is to phone in your payment and shipping information. Available from 25 kv to 800 kv for measurement, protection and control. We dont share your credit card details with thirdparty sellers, and we dont sell your information to others. This one paper solved mcqs covers extensive objective of islamiat, pakistan affairs, general knowledge and every day science for fpsc ppsc nts pts ots. Jun 16, 2017 learn uet entry test online preparation with physics mcqs for students, seeking learning to get admission in degree programs and higher education. An optical time domain reflectometer otdr for short is an electronicoptical instrument that is used to characterize optical fibers. Arteche optical current transformer is presented as an alternative to current conventional current transformers, offering an. Fiber optics installation in tempe, az industrial fiber.
Im getting quite confused about digital optical cables, some websites say that this type of connection do not support the new audio format like dtshd, dolby truehd etc but some websites say they do. A complete optical systems design course for general optical engineers. In the case of the spacedatahighway, this is the lct5, which can transmit up to 1. The following quiz includes important questions and answers related to information technology. Please could someone tell me if they do or not as i would like to buy the sony davdz260 and connect it up to my ps3 using a optical cable. Cts and pts when we talk about measuring current we immediately run into the problem of how to measure higher currents found in ac power transmission. Life management of the papers to be presented in the. Products optical comparatorsoptical comparator models. Electric treeing of pts, cts all cause partial discharge pd, usually for months treeing or years tracking and gap pd before failure in addition, failures may be due to defective circuit breaker operation, poor or overheated electrical contacts, animals. The transformers sample voltage and current regardless of signal flow in the main line. This tutorial will help you find out if your fiber cables and connectors are fit for transmission in just a few simple steps.
Jul 10, 2008 im getting quite confused about digital optical cables, some websites say that this type of connection do not support the new audio format like dtshd, dolby truehd etc but some websites say they do. The pts parameters that considered in the simulation include the partitioning type of subblock, the modulation schemes, the number allowed phase factor and the number of subblocks, and for slm. Instrument transformers are high accuracy class electrical devices used to isolate or transform voltage or current levels. With this setup a working distance can be obtained, which is larger than the focal length of the system. Rf and digital signals over fiber optic cable key features. Matt keough, one of the as five aces in the early 80s and later a strong resource in the as front office, died friday in southern. Optical imaging system performance 5th edition 2000 volvo s40 turbo. A pon is a pointtomultipoint network that provides allfiber access to any ethernet endpoint, including user devices, access points, and wireless controllers and application servers. Many people want to know what is a current transformer and potential transformer. Optical transport use cases open networking foundation. Pdf performance analysis of slm and pts papr reduction.
True rms metering 31st harmonic accepts standard ct and pt inputs. Translogic pneumatic tube system for hospitals swisslog. Some of the circuit monitors many features include. Trench optical current transformers do not contain electronic parts and do not use oil or sf6 as insulation media. A power supply that powers the optical transmitter can also power the gps antenna via a voltage on the inner connector of the gps antenna cable. This paper provides an economical alternative, for the use of cts and pts for the measurement of current and voltage. The optical receiver converts the optical signal back to the rf gps signal. Optics current sensor free standing focsfs english pdf brochure. For most cts with wires, there will be a white and black wire. These errors can be highly objectionable in some applications. It locates defects and faults, and determines the amount of signal loss at any point in an optical fiber. These suggested benefits of optical instrument transformers motivated a systematic quantitative comparison of an integrated measurement and protection system based on optical cts and pts with a system using magnetic cts and pts in this research project.
Mid20 assessment and outlook for the north american. A viable alternative to magnetic cts is the use of optical cts that eliminate the errors commonly associated with magnetic cts. Private pilot practical test standards for glider faas808122 pdf apr 1999. Of the key north american it equipment manufacturers, only sample participates to a significant extent in both the hv and mv segments. The optical signal is sent over a thin flexible fiber optic cable to the optical receiver. Fiber optics current sensor free standing abb group. How to test fiber optics for continuity cable organizer. Basic information technology info quiz 1 online mcqs. Operating below 10% of the ct rating accuracy is undefined. The system should be described by the two focal lengths and the distance t between the two lenses. Current transformers, inductive voltage transformers, capacitive voltage transformers, combined currentvoltage transformers and station service voltage transformers are designed to transform high current and high voltage levels down to low current and low voltage outputs in a known and accurate proportion specified by the. Instrument transformers are high accuracy class electrical devices used to isolate or transform.
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