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Single-Phase Conventional Overhead Transformer Howard Industries manufactures a complete line of single-phase conventional overhead distribution transformers, all designed with increased margins of safety and reliability. Howard Industries manufactures a complete line of transformers, all designed with increased margins of safety and reliability. Contact your distributor or factory representative for availability of other kVA sizes, voltage ratings, features, accessories and design standards not listed. Talk to us about filling a custom order that best fits your needs Inquire About Unit
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Documents Overhead Transformer Installation, Operation, And Maintenance Manual Overhead Transformer Brochure
Ratings KVA Ratings (65° Rise):
0.5, 1, 1.5, 3, 5, 10, 15, 25, 37.5, 50, 75, 100, 167, 250, 333, 500, 833
High-Voltage Ratings:
2400/4160Y or 4160GrdY/2400 19920/34500GrdY or 34500GrdY/19920 (60 kV through 250 kV BIL)
Low-Voltage Ratings:
120, 120/240, 240/480 or 277 (30 kV BIL)
Standard Features Meets or exceeds current IEEE, NEMA RUS, and DOE standards as applicable Shell-type core design Wet-process porcelain high-voltage bushings (Oil-filled at 125 kV BIL and above for reduced radio interference) Molded polymer or wet-process porcelain low-voltage bushings Tin-plated bronze terminals suitable for connection to copper or aluminum Low-voltage grounding provision Low-voltage ground strap (1-bushing units only) Permanently stamped identification on internal secondary leads for ease of paralleling Visible cover ground connected to upper mounting bracket Tank grounding provisions Tank ground connector (1-bushing units only) Automatic pressure relief valve for added safety Mineral oil with oxidation inhibitor