About Us About Us Management Team Management Team Board Of

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  • 8/14/2019 About Us About Us Management Team Management Team Board Of

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    About UsAbout UsManagement TeamManagement TeamBoard of Director

    Board of DirectorBoard of AdvisorBoard of Advisor

    Nexge SoftswitchNexge SoftswitchNexge Feature ServerNexge Feature ServerNexge IVR ServerNexge IVR ServerNexge VoIP Billing ServerNexge VoIP Billing Server

    Nexge SMS ServerNexge SMS ServerNexge PC SoftphonesNexge PC SoftphonesNexge Click-2-TalkNexge Click-2-Talk

    ProductsProductsInstruments TransformersInstruments Transformers

    Line TrapsLine TrapsTesting EquipmentsTesting EquipmentsOther ProductsOther Products

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    GYRO GROUP

    http://www.gyrogroup.in/contactus.htmhttp://www.gyrogroup.in/enquiryform.htmhttp://www.gyrogroup.in/esteemclients.htmhttp://www.gyrogroup.in/aboutus.htmhttp://www.gyrogroup.in/index.htmmailto:info@gyrogroup.inhttp://www.gyrogroup.in/sitemap.htmhttp://www.gyrogroup.in/index.htm
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    pplications

    irect measurement of voltage in High Voltage System is not possible because of insulation problem of measuring instruments. It is also not possible to apply higholtage directly to protective relays used for system protection due to high insulation problem. Therefore voltage transformers are used to step down high voltage to a

    w value accurately in proportion to their ratios.

    Basic Functions of Potential Transformers are :-

    To transform the line voltage with reasonably good accuracy to a value which is suitable forstandard measuring instruments relays etc.

    To isolate the measuring instruments, meters, relays etc. from high voltage side of anelectrical installation.

    To sense abnormalities in voltage and give voltage signals to protective relays to isolatethe defective system.

    Technical information required for tendering :-

    RATIONUMBER OF SECONDARY WINDINGSVA BURDEN OF EACH WINDINGSACCURACY CLASS OF EACH WINDINGSVOLTAGE FACTOR AND ITS DURATIONVOLTAGE CLASSSYSTEM CONDITIONS

    Copyright 2008 Gyro Group. Site Designed byAce Smart

    Applications

    http://www.ace-smart.com/http://www.ace-smart.com/
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    Direct measurement of high current at high voltage system is not possible because of limitation and insulationproblem of measuring instruments. It is also not possible to use current flowing through the system directly forprotection purpose due to its high value and high insulation problem.

    Basic Functions of Current Transformers are :-

    To transform the line current with a specified accuracy to a value which is suitable forstandard measuring instruments, relays etc.

    To isolate the measuring instruments, meters, relays etc. from high voltage side of

    To protect measuring instruments against short circuit currents.

    To sense abnormalities in current and give current signals to protective relays to isolate the

    defective system.

    Technical information required for tendering :-

    RATIO

    NUMBER OF CORES

    VA BURDEN OF EACH CORE

    ACCURACY CLASS

    ACCURACY LIMIT FACTOR FOR PROTECTION CORE

    FOR CLASS PS - MIN. KNEE VOLTAGE, EXCITATION CURRENT & RCT AT 75 DEG.C.

    RATED SHORT TIME CURRENT RATING AND DURATION.

    VOLTAGE CLASS

    SYSTEM CONDITIONS.