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.
| KVA Ratings (65° Rise): | 50, 75, 100, 167, 250, 333, 500, 833 |
| High-Voltage Ratings: | 7200/12470Y or 12470 GrdY/7200 through |
| 19920/34500GrdY or 34500GrdY/19920 (95 kV through 150 kV BIL) | |
| Low-Voltage Ratings | 2400 (60 kV BIL) through 7970 (95 kV BIL) |
| Meets or exceeds current IEEE, NEMA and RUS 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) | |
| Wet-process porcelain low-voltage bushings | |
| Tin-plated bronze terminals suitable for connection to copper or aluminum | |
| 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 | |
| Mild steel tank, cover and ring | |
| Continuous-bead welding on lifting lugs and mounting brackets for increased safety and corrosion resistance | |
| Recessed tank bottom for scuff protection | |
| Tough powder-paint finish for improved resistance to abrasion and corrosion | |
| 10 kV minimum cover and ring insulation | |
| Corrosion-resistant cover-ring hardware | |
| KVA marking on tank | |
| Internal oil-level mark | |
| Laser-engraved aluminum nameplate |
| Stainless steel tank and/or cover and/or cover ring | |
| Lightning arrester mounting provisions | |
| Lightning arrester, externally-mounted or internally-mounted under oil | |
| High-voltage tap switch with external operating handle: | |
| • 5-2.5% taps above normal | |
| • 5-2.5% taps below normal | |
| • 2-2.5% taps above and below normal | |
| • Taps at 13800/13200/12870/12540 for units rated 14400 | |
| Dual high-voltage switch with external operating handle | |
| Dual low-voltage switch | |
| Drain valve with oil sampling device | |
| Temperature gauge | |
| Liquid level gauge | |
| Pressure/vacuum gauge | |
| Wildlife protection | |
| Overload warning signal light | |
| Tank ground connector (standard on 1-bushing transformers) | |
| Ester-based dielectric fluid | |
| Custom stenciling and labeling | |
| Laser engraved stainless steel nameplate |
