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SG Series - Three-Phase Dry-Type Transformers
The SG series three-phase dry-type transformers are designed for industrial power distribution applications. Cast resin or open-type construction for indoor use.
Model Number Breakdown
Key Features
- Three-phase 380V/660V systems
- Capacity range 1kVA to 300kVA
- Class F/H insulation
- Self-cooling (AN) design
Applications
- Industrial power distribution
- Machine shop power supply
- Factory automation
- Commercial buildings
TECHNICAL DRAWING
Model: SG-6000VA | Type: Oil-immersed transformer | Capacity: 6 kVA
FRONT ELEVATION
ELECTRICAL SCHEMATIC
EFFICIENCY vs LOAD
SIDE VIEW
TOP VIEW
TERMINAL BLOCK
CORE & WINDING
LEGEND:
Specifications Range
All specifications and dimensions can be customized upon request
Model Selector
| Key parameters | Model Range |
|---|---|
| Capacity | 0.1–100 kVA |
| Frequency (Hz) | 50/60 |
| Compare | Model | Series | Capacity (kVA) | Input voltage | Output voltage | Frequency (Hz) | Rated current (A) | Weight | Dimensions |
|---|---|---|---|---|---|---|---|---|---|
| SG-100VA | SG | 0.1VA | ≤1000V | Custom | 50/60 | 0.06A | 5 kg | 120×72×110 mm | |
| SG-300VA | SG | 0.3VA | ≤1000V | Custom | 50/60 | 0.17A | 5 kg | 180×106×180 mm | |
| SG-500VA | SG | 0.5VA | ≤1000V | Custom | 50/60 | 0.29A | 10 kg | 180×116×180 mm | |
| SG-1000VA | SG | 1VA | ≤1000V | Custom | 50/60 | 0.58A | 15 kg | 240×124×230 mm | |
| SG-1500VA | SG | 1.5VA | ≤1000V | Custom | 50/60 | 0.87A | 20 kg | 240×124×230 mm | |
| SG-2000VA | SG | 2VA | ≤1000V | Custom | 50/60 | 1.15A | 25 kg | 240×144×230 mm | |
| SG-2500VA | SG | 2.5VA | ≤1000V | Custom | 50/60 | 1.44A | 30 kg | 240×144×230 mm | |
| SG-3000VA | SG | 3VA | ≤1000V | Custom | 50/60 | 1.73A | 35 kg | 300×160×280 mm | |
| SG-4000VA | SG | 4VA | ≤1000V | Custom | 50/60 | 2.31A | 40 kg | 300×160×280 mm | |
| SG-5000VA | SG | 5VA | ≤1000V | Custom | 50/60 | 2.89A | 50 kg | 300×175×280 mm | |
| SG-6000VA | SG | 6VA | ≤1000V | Custom | 50/60 | 3.46A | 55 kg | 300×185×280 mm | |
| SG-7000VA | SG | 7VA | ≤1000V | Custom | 50/60 | 4.04A | 60 kg | 300×185×280 mm | |
| SG-8000VA | SG | 8VA | ≤1000V | Custom | 50/60 | 4.62A | 70 kg | 360×185×340 mm | |
| SG-10000VA | SG | 10VA | ≤1000V | Custom | 50/60 | 5.77A | 80 kg | 360×185×340 mm | |
| SG-15KVA | SG | 15VA | ≤1000V | Custom | 50/60 | 8.66A | 110 kg | 410×200×390 mm | |
| SG-20KVA | SG | 20VA | ≤1000V | Custom | 50/60 | 11.55A | 140 kg | 430×215×390 mm | |
| SG-30KVA | SG | 30VA | ≤1000V | Custom | 50/60 | 17.32A | 200 kg | 450×270×410 mm | |
| SG-50KVA | SG | 50VA | ≤1000V | Custom | 50/60 | 28.87A | 300 kg | 510×300×460 mm | |
| SG-60KVA | SG | 60VA | ≤1000V | Custom | 50/60 | 34.64A | 340 kg | 535×330×435 mm | |
| SG-80KVA | SG | 80VA | ≤1000V | Custom | 50/60 | 46.19A | 420 kg | 600×340×490 mm | |
| SG-100KVA | SG | 100VA | ≤1000V | Custom | 50/60 | 57.74A | 500 kg | 600×350×530 mm |
Selection Guide
Isolation
Choose isolation winding for galvanic isolation; auto-transformer only when isolation is not needed.
Capacity
Match continuous load plus starting surge; allow for motor inrush.
Voltage
Specify primary and secondary voltages, and Dyn11 or other connection group.
- Frequently Asked Questions
What is the SG series?
Three-phase dry-type transformers for industrial power and isolation.
Isolation vs auto-transformer?
Isolation has separate windings for galvanic isolation; auto-transformer is smaller but provides no isolation.
How to select capacity?
Match continuous load plus starting surge; allow for motor inrush.
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Certification
The values below are computed from what you selected above. Anything that cannot be computed yet is shown as an em dash — never as zero.
Iₙ = S / (√3·U) · I_sc = 100·Iₙ / uₖ · S_sc = √3·U·I_sc · I_p = k·Iₖ
Still required to complete the calculation: rated capacity S, impedance voltage uₖ, short-time or peak withstand current.
Per-model values (P0 / Pk / uₖ declared by the factory, losses, noise, temperature rise, dimensions, weight) are not in the product library: those rows stay at an em dash until the factory parameter sheet is supplied. An em dash means the value is unavailable — it is never rendered as zero.
Read-only: no price factor, not part of the sum — the loss-grade cost is already carried by the efficiency (subtype) base price, so charging here would double-bill. Values come from the product library type-test data, interpolated between published capacities; grades the library does not cover show an em dash, never zero.
Reference prices are for estimation only and do not constitute a formal offer.
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