Amorphous Alloy Transformer (SBH15-M / SCBH15 Series)
XBRELE’s amorphous alloy transformer series includes the SBH15-M oil-immersed range (5–160 kVA) and SCBH15 dry-type units (30–2500 kVA). With significantly lower no-load loss compared to silicon steel transformers, these high-efficiency models are designed for 6–11 kV distribution networks requiring energy savings and reduced OPEX.
Low Loss Amorphous Alloy Transformer for Energy-Efficient Distribution
The amorphous alloy transformer uses an amorphous metal core instead of traditional silicon steel laminations, dramatically reducing core loss. By combining optimized magnetic properties with high-quality windings, XBRELE SBH15-M oil-immersed and SCBH15 dry-type designs help utilities and industrial users cut no-load loss and improve overall grid efficiency.
Compared with a conventional silicon steel distribution transformer, an amorphous core transformer can reduce no-load loss by 60–70% in many cases, which directly translates into lower lifetime energy consumption. This makes the amorphous alloy transformer a preferred low loss transformer option for projects that focus on energy saving, carbon reduction and long-term OPEX control.
XBRELE engineers design each amorphous alloy distribution transformer according to international power transformer standards such as IEC 60076-1 power transformers , ensuring insulation coordination, temperature rise and short-circuit strength are fully verified. When customers compare silicon steel vs amorphous solutions for 6–11 kV networks, these high efficiency distribution transformers provide a clear technical and economic advantage.
For a broader view of oil-immersed, dry-type and other energy efficient transformer options, please visit the Power Distribution Transformers pillar page , where XBRELE presents its complete distribution transformer solutions.
Amorphous Alloy Transformer Technical Data by Series
XBRELE SBH15-M oil-immersed and SCBH15 dry-type amorphous alloy transformer series provide low loss transformer solutions for utilities and industrial users who focus on energy efficient transformer performance and lifetime operating cost, offering a high efficiency distribution transformer alternative in the discussion of silicon steel vs amorphous cores.
SBH15-M Oil-Immersed Amorphous Alloy Distribution Transformers
SBH15-M adopts an amorphous alloy iron core and hermetically sealed tank structure. Compared with traditional silicon steel transformers, it significantly reduces no-load loss, helping utilities and project owners cut OPEX while improving grid efficiency.
The product is suitable for rural and urban distribution networks, energy conservation retrofits, and government green energy projects that require a low loss transformer with reliable outdoor performance.
Main Technical Parameters — 5kVA–160kVA Single-Phase SBH15-M Amorphous Alloy Distribution Transformer
| Rated Capacity (kVA) | High Voltage (kV) | HV Tap Range (%) | Low Voltage (kV) | Join Group | No-load Loss (W) | Load Loss (W) | No-load Current (%) | Impedance (%) |
|---|---|---|---|---|---|---|---|---|
| 5 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 15 | 130 | 2.0 | 4.0 |
| 10 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 23 | 235 | 2.0 | 4.0 |
| 16 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 30 | 330 | 1.8 | 4.0 |
| 25 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 40 | 495 | 1.8 | 4.0 |
| 30 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 45 | 580 | 1.8 | 4.0 |
| 40 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 55 | 780 | 1.6 | 4.0 |
| 50 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 60 | 920 | 1.6 | 4.0 |
| 63 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 70 | 1100 | 1.5 | 4.0 |
| 80 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 85 | 1350 | 1.5 | 4.0 |
| 100 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 100 | 1600 | 1.3 | 4.0 |
| 125 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 115 | 1950 | 1.3 | 4.0 |
| 160 | 10 | ±2×2.5 / ±5 | 0.22 / 0.24 | I0 | 135 | 2350 | 1.2 | 4.0 |
Note: 5–160kVA single-phase SBH15-M oil-immersed amorphous alloy transformer. High voltage 10kV, low voltage 0.22/0.24kV, tap range ±2×2.5% or ±5%, connection group I0. Data according to the SBH15-M single-phase catalogue.
SCBH15 Dry-Type Amorphous Alloy Distribution Transformers
SCBH15 uses an amorphous alloy strip core and epoxy cast windings to provide a fire-safe, maintenance-free low loss transformer for indoor applications. Compared with silicon steel core dry-type transformers, the amorphous core offers much lower no-load loss and improves overall energy efficiency.
Typical applications include indoor substations, public buildings, commercial complexes and data centers where high efficiency distribution transformer performance and reduced lifecycle operating cost are critical.
Main Technical Parameters — 30kVA–2500kVA SCBH15 Dry-Type Amorphous Alloy Iron Core Distribution Transformer
| Rated Capacity (kVA) | High Voltage (kV) | HV Tap Range (%) | Low Voltage (kV) | Join Group | No-load Loss (W) | Load Loss 100°C (W) | Load Loss 120°C (W) | Load Loss 145°C (W) | No-load Current (%) | Impedance (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| 30 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 70 | 670 | 710 | 760 | 1.6 | 4.0 |
| 50 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 90 | 940 | 1000 | 1070 | 1.4 | 4.0 |
| 80 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 120 | 1290 | 1380 | 1480 | 1.3 | 4.0 |
| 100 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 130 | 1480 | 1570 | 1690 | 1.2 | 4.0 |
| 125 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 150 | 1740 | 1850 | 1980 | 1.1 | 4.0 |
| 160 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 170 | 2000 | 2130 | 2280 | 1.1 | 4.0 |
| 200 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 200 | 2370 | 2530 | 2710 | 1.0 | 4.0 |
| 250 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 230 | 2590 | 2760 | 2960 | 1.0 | 4.0 |
| 315 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 280 | 3270 | 3470 | 3730 | 0.9 | 4.0 |
| 400 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 310 | 3750 | 3990 | 4280 | 0.8 | 4.0 |
| 500 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 360 | 4590 | 4880 | 5230 | 0.8 | 4.0 |
| 630 | 6 / 10 / 10.5 / 11 | ±2.5 / ±5 | 0.4 | Dyn11 | 420 | 5530 | 5880 | 6290 | 0.7 | 4.0 |
| 630 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 410 | 5610 | 5960 | 6400 | 0.7 | 6.0 |
| 800 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 480 | 6550 | 6960 | 7460 | 0.7 | 6.0 |
| 1000 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 550 | 7650 | 8130 | 8760 | 0.6 | 6.0 |
| 1250 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 650 | 9100 | 9690 | 10370 | 0.6 | 6.0 |
| 1600 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 760 | 11050 | 11730 | 12580 | 0.6 | 6.0 |
| 2000 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 1000 | 13600 | 14450 | 15560 | 0.5 | 6.0 |
| 2500 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 1200 | 16150 | 17170 | 18450 | 0.5 | 6.0 |
| 1600 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 760 | 12280 | 12960 | 13900 | 0.6 | 8.0 |
| 2000 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 1000 | 15020 | 15960 | 17110 | 0.5 | 8.0 |
| 2500 | 6 / 10 / 10.5 / 11 | ±5 / ±2×2.5 | 0.4 | Dyn11 | 1200 | 17760 | 18890 | 20290 | 0.5 | 8.0 |
Note: 30–2500kVA SCBH15 dry-type amorphous alloy transformer. High voltage 6 / 10 / 10.5 / 11kV, low voltage 0.4kV, connection group Dyn11. Short-circuit impedance 4 / 6 / 8% depends on capacity and tap configuration. Load loss values at 100°C / 120°C / 145°C correspond to insulation classes in GB/T standards and should be confirmed with the latest XBRELE catalogue when selecting models.
Key Features of XBRELE Amorphous Alloy Transformer Series
XBRELE amorphous alloy transformer solutions combine SBH15-M oil-immersed and SCBH15 dry-type designs, delivering a low loss transformer platform for modern 6–11 kV distribution networks. By replacing conventional silicon steel cores with an amorphous core transformer design, utilities and industrial users gain a high efficiency distribution transformer that cuts no-load loss and reduces lifetime OPEX. For a broader view of matching oil-immersed and dry-type products, please visit the Power Distribution Transformers pillar page .
Ultra-Low Core Loss with Amorphous Alloy
The core of each amorphous alloy transformer is made from thin amorphous metal strips with very low hysteresis and eddy current loss, improving efficiency compared with traditional silicon steel designs.
- Reduced no-load loss: Typical savings of 60–70% versus a comparable silicon steel transformer in continuous service.
- Lower operating temperature: Less core loss means less heat and longer insulation life for both SBH15-M and SCBH15 units.
- Stable magnetic performance: Optimised flux density keeps the amorphous core transformer within safe limits under voltage variation.
High Efficiency Distribution Transformer for Green Projects
As an energy efficient transformer, the XBRELE amorphous alloy distribution range is designed for projects where energy saving and carbon reduction are core targets, from new substations to retrofit programs.
- Lower lifetime kWh consumption: Continuous no-load loss reduction directly cuts electricity bills and CO₂ emissions.
- Supports policy incentives: Many regions encourage the use of high efficiency distribution transformer technology in public tenders.
- Aligned with efficiency guidelines: Design principles reference resources from the U.S. Department of Energy and similar agencies for transformer efficiency improvement.
Robust Construction for Long-Term Operation
Both SBH15-M oil-immersed and SCBH15 dry-type amorphous alloy transformer designs use reinforced winding structures and proven insulation systems to ensure long-term reliability in distribution networks.
- Strong short-circuit withstand: Optimised coil clamping and mechanical bracing protect the windings during fault events.
- Consistent dielectric performance: Oil-immersed and dry-type designs are coordinated to meet IEC and utility requirements.
- Flexible configurations: XBRELE can customise tap ranges, vector groups and accessories to match specific amorphous alloy distribution transformer projects.
Manufacturing & Testing of Amorphous Alloy Transformer Series
XBRELE combines controlled core processing, precise coil winding and strict type/routine tests to ensure that SBH15-M oil-immersed and SCBH15 dry-type units operate reliably as low loss, energy-efficient distribution transformers in 6–11 kV networks.
Core & Winding Manufacturing Process
The production line for amorphous-core distribution transformers focuses on stable magnetic performance, low no-load loss and long-term mechanical strength, from strip cutting and annealing to final tank assembly.
- 01
Amorphous Core Strip Handling
Amorphous metal strips are cut and stacked under controlled tension, with annealing and banding to minimise stress and vibration in service.
- 02
LV Foil & HV Layer Winding
Low-voltage foil coils and high-voltage multi-layer windings are wound with precise tension control to provide strong short-circuit withstand capability.
- 03
Vacuum Drying & Oil Filling (SBH15-M)
For SBH15-M, assembled cores and coils are vacuum-dried and filled with transformer oil to improve insulation resistance and moisture protection.
- 04
Resin Casting of HV Coils (SCBH15)
SCBH15 dry-type designs use vacuum resin casting or encapsulation of HV windings to achieve low partial discharge and stable dielectric strength.
- 05
Final Assembly & Functional Checks
Tank welding, terminal installation, tap changer operation and accessories are verified before final inspection and shipment.
Routine & Type Tests
Tests are performed according to IEC 60076 series and corresponding national standards, covering both oil-immersed SBH15-M and SCBH15 dry-type designs for distribution service.
Electrical Performance
- Ratio, polarity and vector group verification for all tapping positions.
- Measurement of load loss and impedance at reference temperature.
- No-load loss confirmation to ensure the unit meets the specified low-loss level.
- Applied and induced voltage tests on HV and LV windings.
Insulation & Dielectric Strength
- Insulation resistance and tan δ checks on coils and core/coil assemblies.
- Partial discharge measurements on SCBH15 dry-type windings to keep PD within specified limits.
- Dielectric design references guidance from IEC 60076-1 for power transformer insulation coordination.
Mechanical & Visual Inspection
- Verification of short-circuit withstand strength and clamping structure.
- Inspection of tank welding, surface treatment and nameplate information.
- Check of fittings, protection devices and options required in distribution transformer projects.
Features for Mining & Harsh Environments
From the dusty depths of mines to humid industrial plants, XBRELE’s specialized contactors are built to endure conditions where standard equipment fails.
Embedded Pole (LZNJ)
The LZNJ series uses epoxy resin to completely encapsulate the vacuum interrupter, isolating it from the external environment.
- Pollution Proof: Fully protected against dust, humidity, and condensation.
- Shock Resistant: Rigid structure absorbs external mechanical impact and vibration.
- Maintenance Free: No cleaning of insulators required over the operational lifespan.
1.14kV Mining Capability (CKJ)
Specifically rated for 1140V networks, bridging the gap between standard LV (690V) and MV (3.3kV) for underground equipment.
- Heavy Duty AC-4: Capable of frequent inching and plugging operations common in mining conveyors.
- Compact Size: Designed to fit into space-constrained mining flameproof enclosures.
- Safe Switching: No exposed arc, ideal for potentially explosive environments.
High Current Handling (LCZ3)
For massive industrial motors and drives, we offer specialized solutions handling up to 3200A at 2kV voltage levels.
- 3200A Rating: Supports large-scale industrial pumps, fans, and steel mill drives.
- Robust Mechanism: Enhanced drive system to manage high contact pressure and prevent welding.
- 2kV Insulation: Higher voltage margin than standard 1140V units for industrial grids.
Common Questions About Amorphous Alloy Transformers
Below are frequently asked questions on amorphous alloy transformers, including loss reduction, typical applications, reliability and how they compare with conventional silicon steel distribution transformers.