Pr o du ct 42 Type VOZ-20 Voltage Transformer Medium Voltage Instrument Transformer 34.5 kV Outdoor, 200 kV BIL 60 Hertz Application The VOZ-20 voltage transformer is used to accurately transform 34.5 kV system voltages to 115/69 kV (or 67.08 kV) secondary voltages for metering and relaying applications. Construction Features The layer wound and shielded high voltage winding is centered on the low voltage winding. Two Wescors placed through and around the windings are protectively cushioned and secured to a support frame. The core and coil assembly is cast under vacuum in a polyurethane resin formulated for outdoor service, combining superior arc track, ozone and ultraviolet resistive properties with physical strength and flexibility. The primary line terminals are electro-tin plated copper and accommodate #10 to 250 MCM conductor. Secondary terminals are clamp-type and are sized for #14 through #3 wire. A ground terminal is also provided for grounding secondary circuit at the transformer. The molded, glass filled polypropylene junction box has a one-inch conduit hub on either end and a knock out for a oneinch conduit fitting on the bottom. The box is anchored to the body of the transformer with screws, and can easily be detached, simplifying installation and change out procedures. The base is constructed of "marine environment resistant" aluminum. Six .375 screws secure the base to the core and coil support frame. Electrical Clearances (L-Grd): VOZ-20 Strike 16.00 in. (406 mm) Creep 27.25 in. (692 mm) • B -9 ull 75 eti n: tin ll e o Pr : Bu 5 t c 97 du - 42 Selector Guide Style Number Primary Voltage Winding Ratio 7525A92G01 20125/34500Y 175/300:1 7525A92G02 27600/27600Y 240/400:1 7525A92G03 34500/34500Y 300/500:1 Ratings • • Accuracy Class: 0.3 W, X, M, Y, Z and 0.6 ZZ (X1-X3) 0.3 W, X, M, Y, 0.6 Z and 1.2ZZ (X2-X3) Continuous Thermal: 2000 VA @ 30ºC ambient Pr o du ct 42 Dimensions Weight: 148 lbs. B -9 ull 75 eti n: tin ll e Bu 5 t c 97 du - Curves May 2005 42 Refer to Price List 42-900 for more information o Pr : ABB Inc. 3022 NC 43 North Pinetops, NC 27864 Tel: + 1-252-827-3212 www.abb.com/mediumvoltage
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