630KVA Dry Type Transformer 480V 277V Three Phase Transformer Isolated DOE 2016
- Brand new oriented or non-oriented cold rolled silicon steel sheet, high mechanical strength, good magnetic permeability, and low losses;
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The winding materials are available in enameled copper/aluminum wire or copper/aluminum foil, with H-grade temperature resistance of 180 ℃ and C-grade temperature resistance of 220 ℃, and can be customized according to needs;
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The coils adopts a skeleton free design, which helps to quickly ventilate and dissipate heat inside the winding, reducing power loss caused by transformer overheating;
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The entire product is insulated with H-grade varnish vacuum pressure impregnation proces.
| Product Name | 630KVA Three-Phase Dry Type Transformer, 480V/277V Delta to 208Y/120V Isolated DOE 2016 |
| Winding Material | Enameled copper/aluminum wire, copper/aluminum foil (optional) |
| Capacity | 630KVA (100VA~5000KVA can be customized) |
| Primary Voltage | 480V (Voltage not more than 600V can be customized) |
| Secondary Voltage | 208V (Voltage not more than 600V can be customized) |
| Frequency | 50/60Hz |
| Vector Group | DYN11/YYN0 or customized |
| Insulation Level | F/H/C, customized |
| Enclosures Protection Level | IP20 / IP54 / IP56 or NEMA 1 / NEMA 3R / NEMA 3 / NEMA 4 / NEMA 4X, Optional |
| Withstand Voltage Test |
Primary to secondary 3.0KV/1min; Primary to earth 3.0KV/1min; Secondary to earth 3.0KV/1min |
| Insulation Resistance |
Primary to secondary >500 MΩ; Primary to earth >500 MΩ;Secondary to earth>500 MΩ |
| Ground Resistance | 25A<100 mΩ |
| Induced Over-voltage Withstand Test | Double frequency / Double Voltage / 60s |
| Cooling Method | AN / AF |
| Temperature Rise | ≤100K / ≤115K / ≤125K or customized |
| Transformation Ratio | <3% |
| No-load Current | <3% |
| Impedance Voltage | about 4.5% |
| Efficiency | ≥98% |
| Operating Temperature | -15℃～40℃ |
| Storage Temperature | -25℃～60℃ |
| Certificate | ISO9001,UL,TUV |
FAQ:
Q1: Why is this transformer classified as "dry type," and what advantages does this bring?
A1: It is a dry type transformer because it uses high-quality solid insulation materials (e.g., varnish and epoxy resin) and relies on natural air convection for cooling, without any insulating oil.
This design eliminates fire risks, oil leakage hazards, and environmental pollution, making it suitable for fire-sensitive environments and reducing long-term maintenance needs.
Q2: What is the benefit of the "isolated" secondary design?
A2: The isolated secondary (208Y/120V) separates the primary and secondary windings via magnetic coupling (no direct electrical connection).
This suppresses ground loop interference, voltage surges, and noise, protecting sensitive electronics, medical equipment, and precision instruments from electrical damage.
Q3: What applications is this 630KVA transformer suitable for?
A3: Due to its oil-free, isolated design and high safety, it is ideal for fire-sensitive and precision-required scenarios,
including data centers, hospitals, commercial buildings, industrial facilities, schools, data processing plants, and any environment where reliable, safe power distribution is critical.
Q4: What does "DOE 2016 compliant" mean for this transformer?
A4: Compliance with DOE 2016 energy conservation standards means the transformer meets strict efficiency requirements.
This minimizes no-load and load losses, reducing operational costs and environmental impact over its service life.
Q5: What certifications does this transformer have, and why do they matter?
A5: It is CE,UL and TUV certified. These certifications ensure the transformer meets industry standards for safety, performance, and reliability,
providing credibility and assurance that it can operate safely in North American and global commercial/industrial applications.
Q6: How durable is this transformer, and what ensures its long-term reliability?
A6: It is constructed with premium silicon steel cores and durable windings, ensuring strong mechanical strength, short-circuit resistance, and stable performance even under harsh operating conditions.
The oil-free design also reduces wear and tear, extending its service life with minimal maintenance.
Q7: How can I get a quotation for the 630KVA Three-Phase Dry Type Transformer?
A7: To obtain a customized quotation, please contact our sales team via email, official website inquiry form, or direct phone call.
Please provide key details including your specific application scenario, required quantity, delivery location, and any additional customization needs (if applicable).
Our professional sales team will respond promptly and provide a detailed, competitive quotation tailored to your requirements.
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.