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SolaHD K-Factor Ventilated Transformers are specifically designed to supply nonlinear electronic loads that generate harmonic currents. Unlike standard dry-type transformers, K-Factor transformers are engineered to withstand the additional heating effects caused by harmonics while maintaining reliable operation and long service life.
Available in standard K-4, K-13 and K-20 ratings, these three-phase transformers are commonly used with variable frequency drives (VFDs), uninterruptible power supplies (UPS), telecommunications equipment, PLCs, data centers, healthcare facilities and other installations where harmonic-producing loads are present.
Standard models are available from 15 kVA through 500 kVA, depending on the selected K-factor rating, with primary voltage taps, electrostatic shielding and multiple voltage configurations to meet a wide variety of industrial and commercial applications.
Wallco Inc. is a Factory Authorized SolaHD Distributor providing expert assistance selecting the proper K-factor rating, voltage configuration and transformer size for your application.
The official SolaHD catalog includes complete specifications, K-4, K-13 and K-20 selection tables, dimensions, wiring diagrams, catalog numbers, voltage combinations and accessory information.
Download the SolaHD K-Factor Ventilated Transformers Catalog (PDF)
Browse the available SolaHD K-Factor Ventilated Transformers below. If you need assistance determining the proper K-factor rating, kVA size or voltage configuration, contact Wallco Inc. and our team will be happy to help.
The SolaHD K4E2H500S is a 500 kVA, three-phase, K-4 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K4E2H300S is a 300 kVA, three-phase, K-4 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K4E2H225S is a 225 kVA, three-phase, K-4 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K4E2H150S is a 150 kVA, three-phase, K-4 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K20E2H300S is a 300 kVA, three-phase, K-20 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K20E2H225S is a 225 kVA, three-phase, K-20 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K20E2H150S is a 150 kVA, three-phase, K-20 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K20E2H112S is a 112.5 kVA, three-phase, K-20 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K13E2H300S is a 300 kVA, three-phase, K-13 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K13E2H225S is a 225 kVA, three-phase, K-13 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K13E2H150S is a 150 kVA, three-phase, K-13 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
The SolaHD K13E2H112S is a 112.5 kVA, three-phase, K-13 rated dry-type transformer with a 480 Delta primary and 208Y/120 VAC secondary. It is designed for nonlinear loads that generate harmonic currents.
SolaHD K-Factor Ventilated Transformers are engineered to withstand the additional heating caused by harmonic currents generated by nonlinear electrical loads. Unlike conventional transformers, K-Factor transformers are specifically designed to operate reliably in environments where electronic equipment creates current distortion.
Available in K-4, K-13 and K-20 ratings, these three-phase dry-type transformers are commonly installed with variable frequency drives, UPS systems, telecommunications equipment, PLCs, data centers, medical facilities and other applications containing significant harmonic-producing loads.
SolaHD K-Factor Ventilated Transformers are available in standard K-4, K-13 and K-20 ratings with three-phase models ranging from 15 kVA through 500 kVA, depending on the selected K-factor rating.
Harmonic currents generated by nonlinear electronic equipment create additional heat within transformer windings. SolaHD K-Factor Transformers are designed to withstand these conditions, helping improve reliability and extend transformer life while providing dependable power distribution for modern electronic loads.
Selecting the proper transformer requires evaluating several application requirements, including:
The SolaHD K-Factor Transformer catalog includes selection tables, dimensions, wiring diagrams and technical specifications to help identify the correct model.
Depending on your application, another SolaHD transformer family may provide a better solution.
A K-Factor transformer is specifically designed to withstand the additional heating effects created by harmonic currents generated by nonlinear electrical loads.
The K-factor rating indicates the transformer's ability to handle harmonic currents. Higher K-factor ratings are intended for applications with greater harmonic content.
Yes. K-Factor transformers are commonly used with variable frequency drives, UPS systems and other nonlinear electronic loads that generate harmonic currents.
Yes. Ventilated models may be installed outdoors when equipped with the optional NEMA Type 3R weather shield. Always verify the enclosure requirements for the specific installation.
No. K-Factor transformers are designed to withstand the heating effects caused by harmonic currents. They do not remove harmonics from the electrical system.
If you need assistance selecting the proper SolaHD K-Factor Ventilated Transformer, contact Wallco Inc. We can help identify the correct model based on your voltage requirements, K-factor rating, kVA size and application.