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.
| 45, 75, 112.5, 150, 225, 300, 500, 750, 1000, 1500, 2000, 2500, 3000, 3750, 5000 kVA and 10000 kVA | |
| Standard high-voltage ratings: | 14400 Volts delta, with taps at 13800, 13200, 12870, 12470, 12000, and 11700 Volts |
| Optional high-voltage ratings from 2400 through 19920 Volts | |
| Standard low-voltage rating: | 480Y/277 Volts |
| Optional low-voltage ratings from 120 through 600 Volts | |
| Standard frequency: | 60 Hertz |
| Optional frequency: 50 Hertz |
| Designed and manufactured in accordance with all applicable IEEE, NEMA, and DOE standards | |
| Non-loadbreak high-voltage tap switch with operating handle located in the high-voltage compartment | |
| Externally clamped porcelain high-voltage bushings with spade terminals (live-front construction) | |
| Mounting provisions for lightning arresters in the high-voltage | |
| Externally clamped epoxy or porcelain low-voltage bushings with integral spade terminals | |
| Removable neutral ground strap in low-voltage compartment | |
| Lifting provisions | |
| Jacking and rolling provisions | |
| Removable steel forklift channels | |
| Removable terminal compartment and front sill | |
| Tamper resistant removable tank access cover | |
| Three-point door latching system with padlock provision and recessed interlocking pentahead security bolt | |
| Tank grounding provisions | |
| Welded mild steel tank construction with mild steel terminating compartment | |
| Mild steel barrier between high-voltage and low-voltage compartments | |
| Corrosion resistant hardware | |
| Recessed tank compartment bottom | |
| Domed covers on tank and terminal compartment | |
| Electrostatically applied powder paint finish with polyurethane topcoat (ANSI 70 light gray) | |
| Oil fill/oil level plug | |
| Oil drain valve with sampling device | |
| Automatic pressure relief device | |
| Dial-type liquid level gauge | |
| Dial-type liquid temperature gauge | |
| Electrical grade mineral oil insulating fluid with oxidation inhibitor | |
| Laser engraved nameplate | |
| Bushing designation labels |
| Insulated interphase barriers | |
| Lightning arrester mounting provisions (live front construction only) | |
| Optional Tap ranges: | |
| • Two 2.5% high-voltage taps above and below normal voltage | |
| • Four 2.5% high-voltage taps below normal voltage | |
| • Four 2.5% taps above normal voltage | |
| • No high-voltage taps | |
| Dual high-voltage rating with non-loadbreak switch handle located in the high-voltage compartment (not available in combination with high-voltage taps) | |
| High-voltage fuses, including internal expulsion fuses, draw-out expulsion fuses, internal backup current limiting fuses, and draw-out full-range current limiting fuses in dry-well canisters | |
| Internal load-break high-voltage ON/OFF switch with operating handle located in the high-voltage compartment | |
| Stainless steel tank and terminating compartment | |
| Cover mounted high-capacity pressure relief device | |
| Amorphous Metal Core | |
| Silicone, or Ester-based insulating fluid | |
| Cooling fans with control or fan mounting provisions only | |
| Mounting provisions for external electricity meter | |
| Hexhead security bolt (pentahead standard) | |
| Temporary service access provision (conduit hole) in terminal compartment sill | |
| Optional topcoat paint color: ANSI 49 light gray, ANSI 61 light gray, ANSI 24 dark gray, olive green (Munsell 7GY3.25/1.5), or white | |
| Tank grounding connectors |
