Engineering Safe & Efficient Indoor Transformer Systems
Sahara Transformers designs and manufactures premium-grade Dry Type and Cast Resin Dry-Type Transformers (CRDT/VPI) specifically crafted for mission-critical installations where fire resistance, eco-friendliness, and operational reliability are paramount.
By utilizing advanced Vacuum Pressure Impregnation (VPI) and epoxy resin vacuum casting technology, our transformers eliminate fluid leakage hazards, ensure flame-retardant performance (F1 Rating), and provide exceptionally high mechanical strength under severe electrical stress.
Core Engineering Highlights
Technical Specifications
Standard and customized configurations built to meet strict buyer requirements and global utility norms.
| Technical Parameter | Cast Resin Transformer (CRT) Specification | VPI Dry Type Transformer Specification |
|---|---|---|
| Rated Capacity (kVA) | 100 kVA to 2000 kVA (2 MVA) | 50 kVA to 2500 kVA |
| Voltage Class | Up to 33 kV Class | Up to 11 kV / 22 kV Class |
| Rated Frequency | 50 Hz / 60 Hz | 50 Hz / 60 Hz |
| Insulation Class | Class F (155°C) / Class H (180°C) | Class H (180°C) / Class C (220°C) |
| Winding Material | High-Conductivity Electrolytic Copper / Aluminum | High-Conductivity Electrolytic Copper / Aluminum |
| Cooling Type | Air Natural (AN) / Air Forced (ANAF) | Air Natural (AN) / Air Forced (ANAF) |
| Vector Group | Dyn11, Dyn5, Ynd11, or Custom as requested | Dyn11, Dyn5, Ynd11, or Custom as requested |
| Enclosure Protection | IP00 (Indoor Unenclosed), IP20, IP21, IP23, IP33, IP54 | IP20, IP21, IP23, IP33 |
| Environmental / Climatic Class | E2 / C2 / F1 Certified | Class E1 / C1 / F1 |
| Core Material | Cold Rolled Grain Oriented (CRGO) Silicon Steel | Low-Loss High Permeability CRGO Steel |
| Applicable Standards | IEC 60076-11, IS 2026 (Part 10), IEEE C57.12.01, ANSI | IEC 60076-11, IS 11171, BS EN standards |
Key Features & B2B Buyer Advantages
Engineered to minimize operational expenditure while complying with modern environmental regulations.
Fire Safety & Non-Explosive
Cast resin epoxy insulation is completely self-extinguishing and non-flammable. It eliminates oil-related explosion hazards, allowing direct installation close to load centers without dedicated fire walls or blast barriers.
Minimal Maintenance & Downtime
Because there is no transformer oil, routine tasks like oil testing, sampling, filtration, and seal replacements are totally eliminated, resulting in significantly lower lifecycle maintenance costs for facility owners.
High Overload & Short-Circuit Capacity
Constructed with high-rigidity fiberglass reinforced epoxy coils, our cast resin units resist extreme electromagnetic forces during short-circuit events and handle transient overload conditions reliably.
Target Industrial & Commercial Applications
Trusted by engineering consultants, EPC contractors, and global industrial procurement managers.
Commercial Buildings & High-Rises
Ideal for multi-story towers, shopping centers, and office complexes requiring high fire protection ratings.
Hospitals & Medical Centers
Delivers clean, uninterrupted, noise-free distribution power essential for life-critical medical equipment.
Data Centers & IT Parks
Provides reliable low-loss continuous energy distribution for high-density server racks and UPS backup systems.
Infrastructure & Metro Subways
Deployed in underground railway stations, airports, and tunnel sub-stations where zero toxic smoke emission is mandatory.
Rigorous Quality Testing & Factory Acceptance (FAT)
Every Dry Type Transformer produced at Sahara's ISO-certified facility undergoes rigorous multi-stage quality checks. Our in-house testing laboratory is equipped with calibrated instruments to execute standard routine, type, and special diagnostic tests.
We welcome international third-party inspection agencies (TUV, SGS, Bureau Veritas, Intertek) for Factory Acceptance Testing prior to global export shipments.
Comprehensive Test Protocols:
- ✓ Winding Resistance & Voltage Ratio Measurements
- ✓ Phase Relationship & Vector Group Verification
- ✓ Separate Source AC Dielectric Withstand Voltage Test
- ✓ Induced Overvoltage Withstand Test
- ✓ Partial Discharge (PD) Measurement (< 10 pC)
- ✓ No-Load Loss & Load Loss Measurements
- ✓ Temperature Rise Test (Type Test Option)
Need Customized Dry Type Transformer Specifications?
Contact our senior engineering team to discuss custom capacity ratings, special enclosure dimensions, voltage ratios, or project tender specifications.
Inquire Now