Power distribution equipment manufacturer
+86 17756594153
bryanthu@kebang2022.com
SG-1KVA SG-5KVA SG-10KVA SG-15KVA SG-20KVA SG-30KVA SG-50KVA SG-80KVA SG-100KVA SG-200KVA SG-300KVA
We supply SG series dry‑type transformer 10KVA‑3000KVA.(Customizable) Wide voltage:690V,600V,480V,440V,380V,240V,220V,208V,110V. Support step‑up, step‑down, isolation and auto transformer. High‑grade aluminum winding, dry‑type oil free, safe & cost‑effective. Standard models fast delivery, custom voltage acceptable.
✅ High Efficiency & Low Loss
Premium cold‑rolled oriented silicon steel sheet + optimized magnetic circuit, reduce no‑load & load loss for higher transformer efficiency.
✅ Stable 3‑Phase Output
Professional three‑phase winding structure, stable voltage conversion, fit for industrial equipment requiring high voltage stability.
✅ Copper / Aluminum Windings Optional
Choose copper or aluminum windings per your budget, performance and working conditions for different project demands.
✅ Safe Dry‑type Structure
Oil‑free design, zero oil‑leak risk, easy maintenance. Ideal for factories, commercial buildings and indoor applications.
✅ Excellent Heat Dissipation
Natural air cooling, optimized winding & core design to lower temperature rise, ensure long‑term stable running.
✅ Flexible Customization Available
Custom capacity, input/output voltage, frequency, connection group, impedance, installation mode as requested.
| Parameter | Specification |
| Product Model | 3-Phase Low Voltage Dry-Type Isolation transformer |
| Rated Capacity | 1 kVA – 3000 kVA (Customizable) |
| Primary Voltage (Input) | 110V,208V,220V,240V,380V, 400V, 415V, 440V, 480V ,600V,690V(Selectable / Multi-tap) |
| Secondary Voltage (Output) | 110V,208V,220V,240V,380V, 400V, 415V, 440V, 480V ,600V,690V(Selectable / Multi-tap) |
| Frequency | 50 Hz / 60 Hz |
| Winding Material | High-Grade Copper or Aluminum |
| Vector Group / Connection | Yyn/Dyn（optional） |
| Efficiency | ≥ 98% |
| Insulation Class | Class F (Standard) / Class H (Optional) |
| Cooling Method | Air Natural (AN) |
| Enclosure Protection | IP00 (Open type), IP20 / IP23 Metal Cabinet |
| Compliance Standards | IEC 60076 and ISO 9001 |
| Model | Size | Size |
| SG-1KVA | 200*180*200mm | 15kg |
| SG-1500VA | 300*250*280mm | 20kg |
| SG-5KVA | 355*305*355mm | 40kg |
| SG-8KVA | 400*350*430mm | 65kg |
| SG-10KVA | 500*400*470mm | 75kg |
| SG-15KVA | 550*450*550mm | 120kg |
| SG-20KVA | 550*450*550mm | 130kg |
| SG-25KVA | 600*500*580mm | 140kg |
| SG-30KVA | 600*500*580mm | 150kg |
| SG-40KVA | 650*550*710mm | 180kg |
| SG-50KVA | 650*550*710mm | 210kg |
The weight and dimensions are for reference only, please refer to the actual situation.
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Our 3-phase Isolation Transformers are widely used across diverse industrial sectors requiring direct voltage adjustment:
Imported CNC Machinery: Lathes, milling machines, laser cutters, and machining centers.
Industrial Automation: SMT surface mount equipment, PCB manufacturing lines, and robotic arms.
Motor & Pump Drives: Step-down voltage starting for large AC induction motors, fans, and compressors.
Commercial Power Systems: HVAC systems, printing presses, and plastic injection molding machinery.
Q1: When should I choose an Autotransformer instead of an Isolation Transformer?
A: You should choose an Autotransformer if you simply need to convert line voltage (e.g., from 380V to 220V for imported machinery) and do not require complete electrical/galvanic isolation between the primary and secondary circuits. It is much more compact, highly efficient, and cost-effective.
Q2: Can this autotransformer be built into our existing control cabinet?
A: Yes, we supply open-type (IP00) autotransformers specifically designed for integration inside customer control panels, as well as standalone enclosed units (IP20/IP23) for floor mounting.
Q3: Do you support dual or multiple output voltages on a single autotransformer?
A: Absolutely. We can engineer multi-tap output terminals (for example, 380V input to both 220V and 200V outputs) according to your electrical schematics.
