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    Class H Coil System

    Uploaded by

    Ali Hashemi
    The document provides specifications for the construction of AC stator coils up to 7200 volts. It details materials used, insulation layers, testing procedures, and guarantees. Construction involves shuttle winding coils, applying various insulation layers like mica and fiberglass tape, and testing coils can withstand high voltages and frequencies.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Class H Coil System

    Uploaded by

    Ali Hashemi
    70 views2 pages
    The document provides specifications for the construction of AC stator coils up to 7200 volts. It details materials used, insulation layers, testing procedures, and guarantees. Construction involves shuttle winding coils, applying various insulation layers like mica and fiberglass tape, and testing coils can withstand high voltages and frequencies.

    Original Title

    Class-H-Coil-System

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    © © All Rights Reserved

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    The document provides specifications for the construction of AC stator coils up to 7200 volts. It details materials used, insulation layers, testing procedures, and guarantees. Construction involves shuttle winding coils, applying various insulation layers like mica and fiberglass tape, and testing coils can withstand high voltages and frequencies.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    70 views2 pages

    Class H Coil System

    Uploaded by

    Ali Hashemi
    The document provides specifications for the construction of AC stator coils up to 7200 volts. It details materials used, insulation layers, testing procedures, and guarantees. Construction involves shuttle winding coils, applying various insulation layers like mica and fiberglass tape, and testing coils can withstand high voltages and frequencies.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
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    SCOPE 8.

    00 The lead insulation for various voltages shall be as


    1.00 These specifications cover the general material, and indicated below:
    fabrication standards employed by Kencoil in the manufacture
    of ac stator coils operating at voltage ratings up to and Voltage Type
    including 7200 volts. Thru 4160 No less than 4 servings of .005”
    thick mica ½ lap, overlaid with one
    STANDARDS serving of fiberglass armor tape
    2.00 All coils manufactured under these specifications are
    done so in accordance with the latest published IEEE and 7200 No less than 5 servings of .005”
    NEMA Standards unless otherwise specified. mica ½ lap, overlaid with one
    serving of fiberglass armor tape
    MATERIALS
    3.00 All materials are compatible and unless otherwise 9.00 The outer protective armor consists of one serving,
    specified will be compatible with standard materials used in the fiberglass tape.
    industry. Materials meet or exceed class “H” temperature
    ratings. CONSTRUCTION
    10.00 Coils are shuttle wound, hydraulically press molded to
    4.00 Conductors used are high conductivity 100% virgin assure conductor alignment and may be varnish submerged,
    copper. and oven cured.
    5.00 Conductor strand insulation shall be heavy or quad film 11.00 The loops have the lead insulation wiped clean to bare
    covered wire with a polyester basecoat and a polyamideimide copper; are spread to proper shape, and checked for uniformity.
    topcoat or fused single or double glass served over a heavy or
    quad film covered wire. Other supplemental turn insulation (if 12.00 Leads are hand taped. The prescribed servings of ground-
    required), will consist of taped mica or polyimide film turn wall mica tape are applied by machine.
    insulation.
    13.00 A final armor tape is machine applied.
    5.01 Strand insulation choice is determined from any of the
    following factors: TESTING
    A. RMS volts between turns 14.00 Prior to shipment a sample of coils must pass a dc ground
    B. Available slot space test of twice normal operating voltage for one minute. Coils must
    C. Machine application pass a surge test (ten second high frequency turn to turn
    insulation test) as follows:
    6.00 The end turn insulation shall consist of .005” thick silicone
    bonded mica tape, ¾ lapped, with the minimum servings as Strand Ins. Applied Voltage
    indicated below: Heavy Film Turns per coil x 500 = test voltage
    Quad Film Turns per coil x 850 = test voltage
    Voltage No. of Servings [Polyimide film over add 300 volts/turn]
    Thru 600 1 [Mica over add 1,300 volts/turn]
    2300 1
    4160 2
    7200 4 TESTING (COMPLETED WINDING)
    14.01 The following test values are recommended when
    7.00 The ground wall insulation shall be a silicone bonded applying D.C. voltage to a completed winding:
    mica tape applied to the typical thickness between conductor
    and core as indicated below: Before V.P.I. processing 100% of line voltage
    After V.P.I. processing (2E + 1000) x 1.7
    Voltage Thickness
    Thru 600 .010”
    2300 .030” GUARANTEE
    4160 .040’ 15.00 Kencoil, Inc. guarantees its manufactured products to be
    7200 .060” free of defective materials and workmanship. It further
    guarantees the coils will pass the standard hi-pot and surge
    tests after complete insertion and proper connections are made.
    This guarantee remains in effect for one year from date of our
    invoice. Exceptions will be taken should the end user, through
    neglect or abuse, allow the machine to become victim of faulty
    electrical, mechanical, or environmental circumstances.

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