6-10kV SCB Series Epoxy Dry-Type Transformer
The <strong>6-10kV SCB series epoxy resin dry-type transformer</strong> features flame-retardant, maintenance-free design for reliable performance in demanding environments. With low noise, high efficiency, and smart temperature control, it is ideal for urban distribution, commercial centers, and industrial applications.
Overview of the 6-10kV SCB Epoxy Dry Type Transformer
The epoxy dry-type transformer in the SCB series features a unique form of insulation that uses epoxy resin to create flame-resistant, oil-free indoor electrical distribution systems that can be compact. This distribution dry-type transformer is offered in SCB10, SCB11, SCB12, and SCB13 models featuring different efficiency ratings. The SCB series distribution dry-type transformer is comprised of a low-loss core and has built-in temperature measurement capabilities via PT100 sensors and RS485 remote communications. The SCB series distribution dry-type transformers comply with IEC 60076-11 and IE3/IE4 to provide safe and efficient operation for commercial buildings, industrial plants, and urban distribution networks.
The cast resin insulation provides a complete seal of the windings against moisture, dust, and any types of chemical vapours, while the IP20/IP23 enclosed housing serves to reduce electromagnetic noise to below 65 dBA. The transformer is approved for installation up to 1,000 metres above sea level and can be operated with ambient temperatures from -25 °C to +40 °C. The transformer is configured for 50/60 Hz distribution and has a rated secondary output voltage of 0.4 kV.
- The transformers are rated for a primary voltage of 6 kV or 10 kV with wire-tapping of ±5% or ±2 x 2.5% available.
- Distribution transformer capacities available in standard sizes from 100 kVA to 2,500 kVA; can be short-circuited with a maximum fault current rating of 25 kA/2 s.
- F/H insulation class; temperature rise is limited to less than 100K for each rating, or optional 125K for SCB13.
- Transformer includes built-in over-temperature alarms, built-in trip and blackout protection.
Benefits & Key Advantages of SCB Epoxy Dry-Type Transformers
Flameproof and Explosion Resistant
Because it is manufactured entirely from solid epoxy resin material, there is no risk of fires; therefore, it is a safe choice for hospitals, high-rise buildings, and underground electrical distribution facilities.
Low Maintenance
No oil to monitor or change — only periodic visual checks and ventilation cleaning required.
Highly Energy Efficient
SCB13 models pass the IE4 energy standard, ensuring significantly reduced no-load losses and year-over-year operating cost reduction.
Compact Size
Smaller than typical oil-filled transformers, saving valuable switch-room space and simplifying transport.
Smart Monitoring
Built-in PT100 sensors and RS485 communication connect to BMS or SCADA systems for real-time temperature and load data tracking.
Environmental Resistance
The cast resin enclosure is highly resistant to moisture, salt spray, and industrial dust, making it suitable for coastal and heavily polluted areas.
Uses & Industries
Urban & Rural Distribution
Safe, quiet power for residential communities, street lighting, and municipal grids.
Commercial Developments
Ideal for shopping centers, office buildings, and hotels due to its fire-safe, low-noise, and compact design.
Industrial and Manufacturing
Provides reliable power supply for production lines, smelting, and chemical processing with high short-circuit strength.
Transportation Infrastructure
Railroads, subways, and offshore structures depend on the vibration-proof, durable design of this transformer.
Technical Data & Specifications
Standard 6-10kV SCB series epoxy dry-type transformer parameters. SCB10, SCB11, SCB12, and SCB13 efficiency models available. Custom secondary voltages and protection levels on request.
General Specifications
| Parameter | Specification |
|---|---|
| Rated Voltage | 6kV / 10kV (primary), 0.4kV (secondary) |
| Power Rating | 100kVA – 2500kVA |
| Frequency | 50Hz / 60Hz |
| Efficiency | ≥99% at rated load |
| Insulation Class | F / H (temperature rise ≤100K / 125K) |
| Cooling Method | AN (Natural Air) or AF (Forced Air) |
| Noise Level | ≤65dB (under full load) |
| Protection Level | IP20 / IP23 / IP54 (customizable) |
| Impulse Withstand Voltage | 40kV–75kV (depending on voltage class) |
| Short-Circuit Resistance | ≤25kA for 2 seconds |
Capacity and Loss Data
| Rated Capacity (kVA) | High Voltage (kV) | Tap Range | Low Voltage (kV) | Connection | No-load Loss (W) | Load Loss (W) | No-load Current (%) | Impedance (%) |
|---|---|---|---|---|---|---|---|---|
| 30 | 11; 10.5; 10; 6.6; 6.3; 6 | ±5% ±2×2.5% |
0.4 | Yyn0 Dyn11 | 190 | 710 | 2.1 | 4 |
| 50 | Yyn0 Dyn11 | 270 | 1000 | 2.1 | 4 | |||
| 80 | Yyn0 Dyn11 | 370 | 1380 | 1.6 | 4 | |||
| 100 | Yyn0 Dyn11 | 400 | 1570 | 1.6 | 4 | |||
| 125 | Yyn0 Dyn11 | 470 | 1850 | 1.5 | 4 | |||
| 160 | Yyn0 Dyn11 | 540 | 2130 | 1.5 | 4 | |||
| 200 | Yyn0 Dyn11 | 620 | 2530 | 1.3 | 4 | |||
| 250 | Yyn0 Dyn11 | 720 | 2760 | 1.3 | 4 | |||
| 315 | Yyn0 Dyn11 | 880 | 3470 | 1.1 | 4 | |||
| 400 | Yyn0 Dyn11 | 980 | 3990 | 1.1 | 4 | |||
| 500 | Yyn0 Dyn11 | 1160 | 4880 | 1.1 | 4 | |||
| 630 | Yyn0 Dyn11 | 1340 | 5880 | 0.9 | 4 | |||
| 630 | Yyn0 Dyn11 | 1300 | 5960 | 0.9 | 6 | |||
| 800 | Yyn0 Dyn11 | 1520 | 5960 | 0.9 | 6 | |||
| 1000 | Yyn0 Dyn11 | 1770 | 8130 | 0.9 | 6 | |||
| 1250 | Yyn0 Dyn11 | 2090 | 9690 | 0.9 | 6 | |||
| 1600 | Yyn0 Dyn11 | 2450 | 11730 | 0.9 | 6 | |||
| 2000 | Yyn0 Dyn11 | 3050 | 14450 | 0.9 | 6 | |||
| 2500 | Yyn0 Dyn11 | 3600 | 17170 | 0.7 | 6 |
Contact us for SCB10/11/12/13 dry type transformer specifications, dimension drawings, and IE3/IE4 certification documents.
Why Buy Our SCB Dry-Type Transformers
SCB Series Expertise
SCB Epoxy Dry-Type Transformers are produced by an expert in this category. We make SCB10 through SCB13 with complete, in-house winding and resin casting.
Certified Efficiency
Manufactured in Concord, North Carolina, SCB transformer models are built to ISO 9001 certification standards and tested according to IEC 60076-11 to verify performance losses per IE3 or IE4 criteria with acceptable partial discharge measurements less than 10pC.
Competitive Pricing
We provide direct factory pricing on commercial, industrial and urban infrastructure dry-type distribution transformers at highly competitive rates.
Quick Delivery
The average delivery of standard SCB models is within 4 to 6 weeks. Custom enclosures, K-factor ratings, as well as monitoring equipment may be provided upon request.
Certifications & Standards
IEC 60076-11 ISO 9001 IE3/IE4 CE RoHS
Buyer’s Guide
How This SCB Dry-Type Transformer Fits Your Distribution Project
The information contained in this buyer’s guide is intended for electrical consultants, panel builders and facility managers who have been charged with selecting epoxy dry-type transformers for 6-10kV distribution projects.
Project Applications
High-rise buildings can accommodate fire-safe designs that fit into electrical room layouts without requiring any oil containment. Industrial parks will use SCB13 to maximize energy savings, while Urban grids are able to use 1000 – 2500kVA units in kiosk substations with remote temperature monitoring.
SCB10/11/12/13 Selection
The SCB10 model should be selected for projects requiring standard efficiency. The SCB11 and SCB12 models can be chosen for projects needing reduced no-load losses. The SCB13 is designed to meet the lowest lifecycle cost by conforming to IEC 60400 criteria. All four SCB transformer models have an identical footprint, and switching from a lower series to a higher series transformer will require no physical redesign of the project.
Installation & Commissioning
The transformers will be delivered in a fully assembled state. Sufficient natural ventilation must be allowed, or an Forced-Air Fan cooling mode will be used. PT100 temperature sensors and RS485 outputs are provided with the transformers for monitoring by the building management system in real-time.
Frequently Asked Questions
What is a dry type transformer?
A dry type transformer uses solid insulation — like epoxy resin — and air for cooling, eliminating flammable liquids. It is preferred for indoor, fire-sensitive installations.
How many amps is a 10 kVA transformer?
For a three-phase 400V secondary, a 10 kVA transformer delivers approximately 14.4A (I = 10kVA / (1.732 × 0.4kV)). Note that our SCB range starts at 30kVA for 6-10kV distribution.
How does a dry type transformer work?
A dry type transformer operates on electromagnetic induction: the primary winding creates a magnetic flux in the core, inducing voltage in the secondary winding. Epoxy resin encapsulation insulates the windings and allows air circulation for cooling.
How to tell if a transformer is dry type?
A dry type transformer has no oil tank, conservator, or drain valve. Its windings are visible or sealed in solid resin, and the nameplate will state “dry type” or “cast resin.” There are no oil-level indicators.
