Howard Power Solutions' medium-voltage dry-type transformers are designed to meet the demanding requirements of many industrial, commercial and utility applications. Typical applications include, data centers, hospitals, schools, hotels, mining, paper mills, steel mills, shopping centers, manufacturing plants, airport terminals, water treatment plants, and other applications requiring the size, weight, safety and environmental advantages of a dry-type transformers. We produce VPI (vacuum pressure impregnated ) Dry Type Transformers, we are UL certified up to 2.5 MVA , and our scope is up to 10 MVA AA/AF and up to 34.5 KV primary voltage.
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.
| Power: | 500-10000 kVA three-phase, self-cooled AA-rated, UL ratings up to 2500 KVA |
| High-voltage rating: | 2.4 kV-34.5 kV |
| High-voltage BlL: | Up to 150 kV (per IEEE standards) |
| Low-voltage rating: | 601 V and above |
| Low-voltage BlL: | up to 30 kV (per IEEE standards) |
| Temperature rise at rated load: | 150°C (at 30°C average/40°C maximum ambient) |
| Frequency: | 60 Hz. Standard Design Features and Accessories |
| 220°C insulation system | |
| Step-lap mitered core | |
| Core ground strap (insulated core with single ground point) | |
| Painted core | |
| High-voltage taps (two 2-1/2% above and below nominal) | |
| NEMA 1 enclosure | |
| Lifting eyes | |
| Provisions for rolling | |
| Capability for adding cooling fans (units over 500 kVA) | |
| Electrostatically-applied powder exterior finish with urethane top coat (ANSI 61 gray) | |
| Ground pad | |
| Diagrammatic nameplate (aluminum) |
| Custom designs for special applications | |
| Loss optimization for lower total owning cost | |
| Higher efficiency requirement | |
| 50 Hz. frequency | |
| Non-standard ambient conditions | |
| Non-standard BIL level | |
| Non-standard altitude requirement | |
| Non-standard sound requirement | |
| Higher overload capacity | |
| Low X/R ratios | |
| K- factor rated (K-1, K-4, K-9) | |
| Special seismic qualification | |
| Reduced vibration and vibration isolation | |
| Retrofit designs | |
| 80°C or 115°C temperature rise | |
| Automatic fan cooling package (FA rated) | |
| Digital temperature monitor | |
| Copper bus and windings | |
| Wye-wye connected windings | |
| Special taps available | |
| Provisions for parallel operation | |
| Ground bus (copper) | |
| Medium-voltage interrupter switch | |
| Lightning arresters | |
| R/C snubbers | |
| Current transformers | |
| Potential transformers (contact factory) | |
| Power meter | |
| Control power transformer | |
| SCADA interface | |
| Space heaters with thermostat | |
| Flanged throats and air terminal chambers | |
| Dust filters (for non-UL listed transformers) | |
| Screens for insect and rodent proofing | |
| Wheels | |
| IR windows | |
| ANSI 49 or ANSI 70 external gray finish | |
| Stainless-steel enclosure | |
| Stainless-steel diagrammatic nameplate |
