Best 15 KVA Single-Phase Transformers for Industrial and Workshop Use
Looking for a 15 kVA single-phase transformer? You want reliable voltage transformation for industrial loads, equipment protection, and stable power delivery. The following five units are selected for common single-phase setups, offering durable dry-type copper winding, practical voltage options, and robust cooling for indoor applications. Each choice suits different input/output voltages, making it easier to match your system without extensive reconfiguration.
Product Comparison at a Glance
| Product | Best For | Key Voltage Options | Why Pick It |
|---|---|---|---|
| GoHz 15 kVA Single Phase Isolation Transformer (110/208V variants) | Industrial loads needing stable step-up/step-down | Primary 208 V (optional 110/120/220/230/240), Secondary 240 V (optional 110/120/208/220/230) | High-efficiency isolation, robust dry-type build |
| GoHz 15 kVA Single Phase Isolation Transformer (400V to 400V) | Facilities with 400 V systems | Primary 208 V (optional 110/120/220/230/240), Secondary 240 V (optional 110/120/208/220/230) | Same durable design, ideal for 400 V contexts |
| GoHz 15 kVA Single Phase Isolation Transformer (208V to 120V) | Equipment needing 120 V from 208 V supply | Primary 208 V (optional 110/120/220/230/240), Secondary 240 V (optional 110/120/208/220/230) | Flexible voltage conversions with low noise |
| GoHz 15 kVA Isolation Transformer (240V to 240V) | Stable 240 V circuits with heat management | 240 V in/out with LCD display | LCD monitoring and high-temp resistance |
| GoHz Isolation Transformer (120V to 220V, 15 kVA) | Workshop tools and machinery from 120V to 220V | 120 V to 220 V via multi-hole enclosure | Rear cooling fan, precise voltage display |
GoHz 15 kVA Single Phase Isolation Transformer, 110V to 208V
Specification: 15 kVA, single-phase, 50/60 Hz. Primary 208 V AC (optional 110 V / 120 V / 220 V / 230 V / 240 V). Secondary 240 V AC (optional 110 V / 120 V / 208 V / 220 V / 230 V). Heavy-Duty Efficiency: isolation transformer designed for industrial loads requiring consistent voltage transformation. Protects downstream equipment with minimal energy loss. Robust Dry-Type Build: IP20 enclosure, enamelled copper winding, silicon-steel core, natural or forced-air cooling, low noise for indoor settings.
Best for: industrial environments needing reliable 208 V input with flexible secondary options. Limitations: designed for indoor use; ensure proper enclosure clearance for cooling.
GoHz 15 kVA Single Phase Isolation Transformer, 400V to 400V
Specification: 15 kVA, single-phase, 50/60 Hz. Primary 208 V AC (optional 110/120/220/230/240). Secondary 240 V AC (optional 110/120/208/220/230). Heavy-Duty Efficiency: stable isolation transformer for industrial loads. Robust Dry-Type Build with IP20 enclosure and copper windings, providing consistent performance with quiet operation for indoor facilities.
Best for: systems operated from or around 400 V service points needing consistent step-down/step-up with strong heat management. Limitations: primary/secondary options are plenty but may require installation planning for wiring changes.
GoHz 15 kVA Isolation Transformer (208V to 120V)
Specification: 15 kVA, single-phase, 50/60 Hz. Primary 208 V AC (optional 110/120/220/230/240). Secondary 240 V AC (optional 110/120/208/220/230). Heavy-Duty Efficiency: isolation transformer designed for an industrial setting, with stable output and low noise. IP20 enclosure and enamelled copper winding for durability.
Best for: converting 208 V supplies to 120 V for tools or machines. Limitations: ensure your equipment can tolerate the 120 V secondary when connected to 208 V input.
GoHz 15 kVA Isolation Transformer 240V to 240V
Specification: 15 kVA, single-phase, 50/60 Hz. Winding material copper. LCD digital display meter with two-color indicators for accurate voltage readouts. High-temperature resistance up to 180℃, ensuring insulation and longevity. Multi-hole enclosure design supports better heat dissipation with rear cooling options.
Best for: 240 V circuits requiring tight voltage monitoring and robust heat management. Limitations: LCD display requires power to remain accurate; check for any display visibility issues in bright environments.
GoHz Isolation Transformer 120V to 220V (15 kVA)
Specification: 15 kVA, single-phase, 50/60 Hz. Multi-hole enclosure design with rear cooling fan for heat dissipation. LCD display with two-color voltage indicators enhances visibility. Enamelled copper windings withstand temperatures up to 180℃, contributing to longer service life.
Best for: shops or labs converting 120 V equipment to 220 V supply. Limitations: ensure your loads are compatible with 220 V operation and adjust wiring accordingly.
Buying Guide: How to Choose a 15 kVA Single-Phase Transformer
What is your input and output voltage range?
Identify the exact incoming voltage from your power source and the required voltage for downstream equipment. Choose a transformer that offers the primary and secondary voltage options you’ll need, or one with adjustable taps to minimize rewiring.
Is isolation important for your application?
Isolation transformers reduce electrical noise and protect sensitive devices from surges. If your load is prone to transients or requires clean power, prioritize units labeled as isolation transformers with robust copper windings and IP-rated enclosures.
How important is heat dissipation and noise?
Industrial and workshop environments benefit from well-ventilated enclosures (IP20 or higher) and low-noise operation. Look for forced-air or natural cooling options and copper windings for durability and efficiency.
What about monitoring and protection?
Some models include LCD meters to display real-time voltage, along with indicators for temperature or fault conditions. These features help operators monitor performance and schedule maintenance before issues arise.
What installation considerations matter?
Consider enclosure size, mounting options, and whether rear cooling fans are included. Ensure adequate clearance around the transformer for airflow and access for wiring connections. Verify local electrical codes for installation requirements.
Best practice: match your system’s phase and service
Even though all listed units are single-phase, confirm compatibility with your electrical service (for example, 208 V, 240 V, or 400 V systems) to prevent over-voltage or under-voltage conditions for downstream equipment.
Durability and warranty considerations
Dry-type copper-winding transformers with IP20 enclosures provide reliable protection in indoor environments. While warranty specifics are not listed here, choose products from reputable manufacturers with readily available parts and support channels.
Frequently Asked Questions
- What does 15 kVA mean for my application? It represents the apparent power rating the transformer can deliver continuously. Ensure your load does not exceed this rating for safe, reliable operation.
- Can I use a 15 kVA transformer for both step-up and step-down? Yes. These transformers are designed for both operation directions, depending on your primary and secondary voltage connections.
- Why choose a copper-winding transformer? Copper windings offer high conductivity, efficiency, and durability, which helps minimize energy loss and heat generation under load.
- What is the advantage of a dry-type transformer? Dry-type designs do not use oil for cooling, reducing fire risk and simplifying indoor installation and maintenance.
- Is cooling important for ongoing performance? Yes. Adequate cooling maintains voltage stability and prolongs component life, especially in continuous operation or hot environments.
- How do I verify compatibility with my equipment? Check the equipment’s voltage input requirements and the transformer’s secondary output. Ensure the outlets, plugs, and wiring are rated for the voltage and current you will draw.