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Isolation Transformers
Isolation & Step-Down Transformers
SKU: DRY-3PH-200KVA
200kVA 415V/380V Three-Phase Dry-Type Step-Down Transformer
200 kVA three-phase dry-type step-down transformer converting 3-phase 415 V to 3-phase 380 V (±5% regulation). Copper windings, class H insulation, natural air cooling for reliable industrial voltage adaptation.
Compliance Standards
IEC • ANSI • IEEE • GB
Quality Inspection
100% FAT Routine Tested
Engineering CAD
2D CAD / SLD Schematics
Global Logistics
Direct Seaport CIF Export
Engineering Datasheet
Technical Parameters & Ratings
| Model Series | SCB10 / SCB11 / SCB13 / SCB14 |
|---|---|
| Rated Capacity | 200 kVA |
| Primary Voltage (U1) | 10,000 V (10 kV / 11 kV) |
| Secondary Voltage (U2) | 400 V / 415 V / 480 V (3-Phase 4-Wire) |
| Vector Group | Dyn11 |
| Rated Frequency | 50 Hz / 60 Hz |
| Cooling Method | AN (Natural Air) / AF (Forced Air Blower) |
| Primary Current (I1) | 11.55 A |
| Secondary Current (I2) | 278.3 A |
| Guaranteed No-Load Loss (P0) | 620 W |
| Guaranteed Load Loss (Pk at 120°C) | 2470 W |
| Short-Circuit Impedance (Uk) | 4.0% |
| Insulation Class | F Class (155°C) / H Class (180°C) Epoxy Cast Resin |
| Temperature Rise Limit | Winding Temp Rise ≤ 100 K (F Class) / ≤ 125 K (H Class) |
| IP Protection Class | IP00 (Open Type) / IP20 (Indoor Enclosure) / IP23 (Loubered) |
| Total Weight | 1150 kg |
| Overall Footprint (L×W×H) | 1000 mm × 750 mm × 1080 mm |
| Governing Standards | IEC 60076-11, GB/T 10228-2015, CE, ISO 9001 |
Engineering Submittal Drawing
2D AutoCAD General Arrangement (GA) Drawing & Footprint
Official XinHuan factory 2D vector General Arrangement drawing for 200kVA 415V/380V Three-Phase Dry-Type Step-Down Transformer. Includes front elevation view, top plan view, terminal centerline clearances, base channel mounting footprint, and complete vector group connection schematics.
Dimensions ($L \times W \times H$ mm)
Terminal Centerline Clearances
Base Channel Mounting Pitch
Vector Group & Rating Plate
XinHuan Hefei Manufacturing Plant — Precision Winding & Assembly Line
Factory Build Quality
Internal Construction & Premium Materials
Built with tier-1 certified raw materials engineered for long operational life (>30 years), superior dielectric withstand, and high short-circuit withstand capacity.
Silicon Steel Core
High-grade grain-oriented cold-rolled silicon steel with step-lap mitered joints for low $P_o$ losses.
100% Copper Windings
Electrolytic oxygen-free copper with high thermal grade insulation for surge resistance.
Precision Tap Changer
De-energized tap switch ($\pm 2 \times 2.5\%$) or on-load vacuum tap changer (OLTC) optional.
Protection & Sensors
Buchholz gas relay, magnetic oil gauge (MOG), and dial thermometers with alarm contacts.
Quality Assurance
CNAS & ISO 9001 Certified
100% Factory Acceptance Testing (FAT) Protocol
Every transformer unit manufactured by XinHuan undergoes mandatory routine factory testing prior to container dispatch. Full certified routine and type test submittal reports are provided with commercial documentation:
1. Insulation Resistance
Megger test (HV to LV, HV to Earth, LV to Earth) >1000 MΩ.
2. Voltage Ratio & Vector
Turns ratio check across all taps with phase displacement check.
3. Winding DC Resistance
Precision Kelvin bridge measurement across all tap positions.
4. Short-Circuit Impedance
Load loss ($P_k$) measurement corrected to reference temp (75°C).
5. No-Load Loss & Current
Core excitation test ($P_o$ and $I_o$) at rated sinusoidal voltage.
6. AC Voltage Withstand
Power-frequency separate source test (e.g. 50kV/70kV 1 min).
7. Lightning Impulse (BIL)
Full wave & chopped wave impulse withstand (BIL up to 170kV).
8. Partial Discharge & Seals
Ultra-low discharge (<5 pC) and pressurized oil/gas tightness test.
Logistics Intelligence
Global CIF / FOB Delivery
Export Packaging & Seaport Logistics
On-site installation and commissioning support available. Customizable mounting and cooling solutions.
Production Lead Time
Standard manufacturing cycle is 4 to 6 weeks from approval of GA blueprints and single-line diagrams.
Heavy-Duty Export Packaging
Vacuum moisture barrier preservation, nitrogen blanketing, and reinforced steel-frame structural crate skids.
Direct Seaport Routes
Fast ocean freight to Port of Chancay & Callao (25-35 days), Manila, Lagos, and Middle East ports.
Equipment Video Inspection
100% TestedWatch XinHuan technicians perform routine dielectric testing, winding insulation checks, and quality inspections inside our Hefei manufacturing plant.
Every unit 100% routine tested before container loading.
Direct Factory Consultation
Need Custom Project Engineering?
Send your single-line diagram (SLD), voltage ratings, or tender specifications. Our chief electrical engineers will review and issue an actionable CIF quotation within 24 hours.
Custom Voltage Ratios
High-Altitude Derating
Short-Circuit Impedance
Third-Party FAT Witness
Engineering & Procurement FAQs
Frequently asked questions regarding specifications, certifications, and delivery for 200kVA 415V/380V Three-Phase Dry-Type Step-Down Transformer.
Request quotes for industrial voltage conversion projects
IEC 61558-1, IEC 60050-421, Thermal protection class H
Standard manufacturing lead time is 4 to 6 weeks following approval of GA blueprints and single-line diagrams. Direct sea container shipping is available under FOB, CFR, or CIF terms with full customs documentation (Bill of Lading, Certificate of Origin, Test Reports).