Principle of Power Cable Fault Locator

Wire and cable fault location equipment has rised as a result of cable applications, using the progress and development of electronic technology, after having a century of changes, the key still but looks Nisshin. As a result of few cable systems failure, positioning experience accumulate very slow. Using the use of automation, technology, the instrument has made substantial progress. Power Cable Fault Locator is utilized to do this work. There are four steps of cable fault location process.

(1)Cable Fault Type Judgment
Should first serious take a look at the failure of cable throughout, fully understand the faulty cable, and detailed records, which will help find fault faster. Positioning method and sort of cable fault. Judgment cable fault type enables you to measure the insulation resistance or DC voltage test. Shaking table or digital megger relative measurement fault cable and white, and metal outer sheath-ground insulation resistance value. Point of failure the measured worth of the insulation resistance measuring voltage, the condition of the environment, sometimes values ??vary greatly. At different voltages, to see the changes over time, the insulation resistance of the fault point, combined with the characteristics from the cable and laying path, so that you can interpret many of information, as an example, the sort of failure as well as the possible positions.

(2)Fault Pretargeting
Bridge method and wave reflection way of the the pretargeting two main means. The proportion of resistance on the point of failure on sides of the cable core resistance and instrument constitutes the Murray Bridge, can be a traditional classic cable fault location. Positioning the bridge equipment low cost, simple operation, and had widespread use. Traditional positioning from the bridge, the rated output voltage only 500V, unable to locate high impedance fault. The big quantity of applications, cross-linked polyethylene cable breakdown is difficult to form the conductive zone breakdown point resistance is high, or even have the ability to withstand our prime voltage was flashover type breakdown. Using the positioning of the popularity of wave reflection method, the method of application of the bridge gradually reduce, not known towards the new cable users.

(3)Path DETECTION
The precise positioning ahead of the point of failure, you need to know the position and direction of the underground cable, the relevant details are often inaccurate, not even. With a dedicated path analyzer measured to find the position and direction of the underground cable. Path analyzer uses the audio induction method to appraise the cable path. The audio generator for the the measured cable input audio signal current on the headend, the receiver is received on a lawn fault cable generates a magnetic signal to its path and depth measurement.

(4)Accurately Fixed
Depending about the kind of fault, there are various ways and instruments for pinpointing. Cable Fault Locator is a necessity. Fault Location in Power Cable is designed to locate cable faults, pinpointing the fault location, route tracing, cable identification, voltage withstand make sure cable information management. It could locate all kinds of cable faults for many voltage level cables, including open circuit, short circuit, low insulation, high insulation and flashover faults, etc. Most power cables were buried underground, invisible, and unrealistic, with modern new power cable fault testing equipment, it may discover the fault point quickly, solve problems immediately and restore power source. Since the best fiber optic products supplier in China, FiberStore supplies three types of Power Cable Fault Locator. And you will also find a myriad of CCTV Security Tester in our store.

Prepared for CCTV security system

Closed-circuit television (CCTV) could be the usage of video cameras to deliver an indication to a specific place, over a limited set of monitors. It is different from broadcast television for the reason that the signal just isn't openly transmitted, community . may employ point out point (P2P), point out multipoint, or mesh wireless links. Though almost all cameras fit this definition, the phrase is often times put on those utilized for surveillance in areas that will need monitoring for example banks, casinos, airports, military installations, and grocery stores. Videotelephony is seldom called CCTV though the using video in distance education, where it is really an important tool, is usually so called. The following is something about CCTV.

Networking CCTV cameras are created for CCTV home security system. The town of Chicago operates a networked video surveillance system which combines CCTV video feeds of government agencies with those of the private sector, set up in city buses, businesses, public schools, subway stations, housing projects etc. Even house owners are able to contribute footage. It is believed to include the recording feeds of an total of 15,000 cameras. The machine is employed by Chicago's Office of Emergency Management in case of an urgent situation call: it detects the caller's location and instantly displays the real-time video feed in the nearest home security camera on the operator, not requiring any user intervention. As the strategy is much too vast to permit complete real-time monitoring, it stores the playback quality data for later usage to be able to provide possible evidence in criminal cases. London even offers a network of CCTV systems that enables multiple authorities to see and control CCTV cameras live. The machine allows authorities like the Metropolitan Police Service, Transport for London plus a amount of London boroughs to talk about CCTV images together. It runs on the network protocol called Television Network Protocol to allow entry to a lot more cameras than every individual system owner could afford to run and look after. The Glynn County Police Department uses a wireless mesh-networked system of portable battery-powered tripods for live megapixel video surveillance and central monitoring of tactical police situations. The systems may be used either on the stand-alone basis with secure communications to nearby police laptops, or within a larger mesh system with multiple tripods feeding video time for the command vehicle via wireless, and to police headquarters via 3G.

Integrated systems allow users to connect remotely from the web and consider what their cameras are viewing remotely, much like that of IP cameras. A single incident, a female from Boynton Beach, Florida was able to watch her house get robbed and contacted police from her office at the office.

Wireless surveillance cameras are used more and more nowadays. Many rrndividuals are turning to wireless security cameras for home surveillance. Wireless cameras will not require a relevant video cable for video/audio transmission, merely a cable for power. Wireless cameras are also easy and inexpensive to put in.[citation needed] Previous generations of wireless security camera systems relied on analog technology; modern wireless cameras use technology which delivers crisper audio, sharper video, and a secure and interference-free signal.

CCTV Security Tester is developed planning to CCTV security system installation and maintenance, combining these function: Optical Fiber Communication test, low power circuit test, video make sure PTZ control, and DC12 1A output for camera test, etc. Helps solving varies problem of home security system, it could be also used in laboratory tests, equipment maintenance, etc. CCTV Tester is really an ideal multi-function instrument for CCTV Home security system, Fiber Optical Communication, CATV and also other Fiber Optic Works. Fiberstore supplies some forms of CCTV Tester and Network Cable Line Tester.

Fiber Optic Tester

Fiber optic technology is not new, but new applying this technology could very well change the way we live and work. For a number of decades fiber optic technology, transmitting light via flexible fibers of very thin glass or another transparent materials, have been available. Although the value of fraxel treatments was considered too costly for anything except for long-distance applications for example telecommunications. The running benefits over traditional copper wiring were what made the extra cost worthwhile.

With the growth of fiber optic communications technology in addition to a growing variety of fiber optic products appeared on the market, many tests should be performed on optical fibers. And thus, the Fiber Optic Tester is launched. A fiber manufacturer must test a fiber to determine the characteristics where the fiber will likely be specified. As the quality control measure during manufacturing of fibers, producer must constantly test the fibers to make certain they match the specifications. Among the many exams are this: core diameter, cladding diameter, numerical aperture, attenuation, refractive index profile and tensile strength.

For example, we start to use a CCTV Security Tester in CCTV Security. CCTV Security Camera Tester is developed looking to CCTV home security system installation and maintenance, combining the examples below function: Optical Fiber Communication test, low power circuit test, video just be sure you PTZ control, and DC12 1A output for camera test, etc. Helps solving varies problem of alarm system. It can be also utilized in laboratory tests, equipment maintenance, etc. CCTV Tester is really an ideal multi-function instrument for CCTV Security System, Fiber Optical Communication, CATV along with other Fiber Optic Works. Fiberstore supplies some sorts of CCTV Security Testers and something is termed STest-895.

The CCTV tester PRO STest-895 combine flick test, Optical Power Meter, Digital Multi-meter, PTZ controller, video signal level test, NTSC/PAL color pattern generator, UTP cable test, PTZ protocol analysis, PTZ address scan, DC12 1A output, and Audio test to body. It really is produced for the On-Site installation and repair of video monitoring system. Countless uses for flash for displaying video, testing video level, controlling PTZ, scanning PTZ address, generating images, capturing data of RS485 and testing LAN cable etc. Its functions, easy operation, and portability make it simple for that CCTV technician to put. STest-895 can maintain CCTV system, improving work efficiency and find the labor cost down. It with the Optical Power Meter as well as being included in testing the laser power Video Fiber Optic Transmission equipment and testing the Fiber Optic Patch Cord etc. STest-895 is an ideal multifunction Instrument for CCTV alarm system, Fiber Optical communication, CATV as well as other Fiber Optic works.

Another testing area, Technicians testing fiber spans must coordinate their efforts to successfully test each fiber end-to-end. Fiber Optic Talk Set is an ideal communications solution for locations without phone coverage as well as for secure locations prohibiting cellphone use, as well as to simply save your valuable cellular telephone minutes. Fiber Optic Talk Set carries full-duplex communication with high quality voice connection without tormented by distance. It can be widely used in operations of fiber optic installation, testing and maintenance works. In most cases applied to pairs and works together 1310/1550nm wavelength. Its working distance is over 80km max.