The SCB13 Series Cast-Resin Dry-Type Transformer is a high-efficiency, fire-resistant power distribution transformer designed for applications where safety, reliability, and low maintenance are critical. It features epoxy-resin encapsulated windings and high-grade cold-rolled silicon steel cores, delivering low no-load losses and excellent short-circuit withstand capability.
This transformer is ideal for high-rise buildings, data centers, power plants, hospitals, airports, and industrial facilities that require fire-safe operation, minimal maintenance, and consistent power quality.
Key Features
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Epoxy-Resin Encapsulated Windings – Provides superior insulation, moisture resistance, and fire safety.
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Cold-Rolled Silicon Steel Core – Reduces no-load loss and improves energy efficiency.
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High Short-Circuit Withstand – Designed to handle fault currents without deformation.
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Fire-Safe & Self-Extinguishing – No flammable liquids; ideal for indoor and sensitive environments.
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Low Maintenance – No oil testing, no leakage risks, and minimal routine service.
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Compact & Lightweight – Saves floor space and simplifies installation.
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Environmental Compliance – RoHS compliant, halogen-free, and recyclable materials.
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Cooling Method – AN/AF (Air Natural / Air Forced) for flexible load management.
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Insulation Class – F or H class for high-temperature tolerance.
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Protection Degree – IP20 (standard) or IP23 (optional) for indoor use.
Technical Specifications (Typical)
| Parameter | Value |
|---|---|
| Rated Capacity | 30 kVA – 2500 kVA |
| Primary Voltage | 480V, 600V, 2.4kV, 4.16kV, 13.8kV, 34.5kV |
| Secondary Voltage | 208Y/120V, 480Y/277V, 600V, etc. |
| Frequency | 60 Hz (also available in 50 Hz) |
| Phase | 3 Phase |
| Vector Group | Dyn1, Dyn11, Yyn0, etc. |
| Cooling | AN/AF |
| Insulation Class | F / H |
| Temperature Rise | 100K / 125K |
| Impedance | 4% – 6% (standard) |
| Tap Changer | Off-circuit, ±2 x 2.5% |
| Standards | IEEE C57.12.01, UL 1561, CSA C22.2, NEMA ST-20, IEC 60076 |
Applications
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Data Centers – Reliable, low-loss power for sensitive IT equipment.
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High-Rise Buildings – Space-saving, fire-safe solution for vertical power distribution.
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Hospitals & Healthcare – Clean, quiet, and maintenance-free operation.
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Power Plants – Auxiliary power and distribution.
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Industrial Facilities – Heavy-duty cycles and harsh environments.
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Airports & Transit – Safety-critical power with high short-circuit strength.
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Renewable Energy – Solar and wind farm collection systems.
Compliance & Certifications
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UL 1561 Listed
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CSA C22.2 No. 47 Certified
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IEEE C57.12.01
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NEMA ST-20
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IEC 60076
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RoHS Compliant
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ISO 9001 Quality Management
Frequently Asked Questions (FAQ)
Q1: What makes the SCB13 different from oil-filled transformers?
A1: The SCB13 uses epoxy-resin encapsulation instead of oil, eliminating fire hazards, leakage risks, and oil testing. It is safer for indoor use and requires less maintenance.
Q2: Is the SCB13 suitable for outdoor installation?
A2: Standard units are IP20 for indoor use. Optional IP23 enclosures allow outdoor installation with additional weather protection.
Q3: What is the typical lifespan of an SCB13 transformer?
A3: With proper installation and routine inspection, the SCB13 can operate for 20–30 years or more.
Q4: Can the SCB13 be used in parallel with other transformers?
A4: Yes, provided the transformers have matching voltage ratios, vector groups, impedance, and tap settings. Consult factory for parallel operation guidelines.
Q5: What cooling options are available?
A5: Standard is AN (Air Natural). Optional AF (Air Forced) cooling increases capacity by 30–50% for intermittent overloads.
Q6: Does the SCB13 meet US energy efficiency standards?
A6: Yes, it meets or exceeds DOE 2016 and IEEE C57.12.01 efficiency requirements for dry-type transformers.
Q7: What is the lead time for a custom SCB13 transformer?
A7: Standard units: 4–6 weeks. Custom designs: 8–12 weeks depending on specifications.
Q8: How do I choose the right kVA rating?
A8: Calculate total connected load, apply a demand factor, and add 20–25% future growth. Consult a licensed engineer for final sizing.
Why Choose the SCB13?
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Safety First – No fire hazard, no toxic fumes, no oil spills.
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Energy Efficient – Low no-load and load losses reduce operating costs.
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Low Maintenance – No oil filters, no gaskets, no routine oil testing.
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Compact Design – Ideal for tight spaces in urban and industrial settings.
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Proven Reliability – Thousands of installations worldwide.
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US-Compliant – Meets UL, CSA, IEEE, and DOE requirements.
- Model: SCB10 / SCB11 / SCB13
- Rated capacity: 30–5000 kVA
- Service voltage: 6.6–35 kV
- Cooling: AN / AF (natural / forced air)
- Protection: IP20 / IP23 optional enclosure