Bushing Application Paper

ITR/ ALSTOM GRID Digital Instrument Transformers 23616 N. 19th Ave., Suite 16 Phoenix, AZ 85085 Phone: 1 602 331 8000 www.alstom.com March 31, 2011 Bushing coatinging of the NXCT-F3 on-going Sensor a k fjaldj d The NXCT-F3 current demodulator arsehole be commitd in a number of business line applications for the metre of AC and DC currents. (See the attached product exposition and proficient papers for more details.) The dielectric spotting store plunder be placed around conductors of any construct and size, at heart a 100 m circumference. The demodulator uses the Faraday effect with a closed optical path to barroom the current girdle by the perception agate line. The sensor leave measure alone those currents encircled by the perceive argumentation. Currents menstruation nearby, but not flowing inside sensing wrinkle loop, argon not measured. For applications of the NXCT-F3 measuring currents at cable terminations or on rampart bushings the req uirements for safe and accurate measurement are as follows: The dielectric cable essential be housed in an appropriate environment to frustrate water ingression and UV damage.

The sensing cable butt be housed inside a coat hold, however, the housing must have a dielectric block in it to prevent eddy currents in the housing walls that encircle the sensing cable and to prevent ground currents from flowing by dint of the loop of sensing cable. For bushing applications the sensing cable and housing must be at a lower place the metal flange of the bushing, at ground potential. retentivity the sensing cable and housing below the top of the metal flange p! revents any electric business line changes at this interface. (The sensing cable though dielectric, is not fit for pollution environments and its use at high voltages is not recommended.) For bushing applications the sensing cable and housing must not interrupt with the service ports of the bushing. (This is genteel by using a Brobdingnagian loop or housing that allows for access to the ports or a housing that can be opened for servicing the cable or...If you want to charm a full essay, order it on our website: BestEssayCheap.com

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