Product Introduction
SCOTECH’S 7.5 MVA electrical power transformer was delivered to South Africa in 2014. the rated power of the transformer is 7500 KVA. It is step down transformer, the primary voltage of the transformer is 22 KV and secondary is 6.6 KV. We adopt high quality copper as our winding material to make it have better mechanical strength to withstand the high current during short-circuit, our 7.5 MVA power transformer was designed with advanced technology and components which result in reliable quality and long operation time.
SCOTECH ensure each one of our delivered transformers had passed the full acceptance test and we remains 0 fault rate record for more than 10 years so far, our oil immersed power transformer is designed in accordance with IEC, ANSI and other major international standards.
Scope of Supply
Product: Oil Immersed Power Transformer
Rated Power: Up to 200 MVA
Primary Voltage: Up to 230 KV
Technical Specification
7.5 MVA power transformer specifications and data sheet diagram.
| Delivered to | South Africa |
| Year | 2014 |
| Model | S10-7.5 MVA-22/6.6KV |
| Type | Oil Immersed Distribution Transformer |
| Standard | IEC60076 |
| Rated Power | 7.5 MVA |
| Frequency | 50 HZ |
| Phase | Three |
| Cooling Type | ONAN |
| Primary Voltage | 22 KV |
| Secondary Voltage | 6.6 KV |
| Winding Material | Copper |
| Vector Group | Dyn11 |
| Impedance | 7% |
| Tap Changer | NLTC |
| Tapping Range | ±2*2.5% @ Primary Side |
| No Load Loss | 7.0 KW |
| On Load Loss | 46 KW |
| Accessories | Standard Configuration |
| Remarks | N/A |
General Arrangement Drawing
7.5 MVA step down transformer wiring and dimensions diagram.
7.5 MVA 22/6.6KV Transformer Manufacturing
Finished 7.5 MVA 22/6.6KV Transformer
7.5 MVA 22/6.6KV Transformer Testing
Packing and Delivery
Installation Commissioning and Operation
What is a core type transformer?
In core-type transformer, the windings are given to a considerable part of the core. The coils used for this transformer are form-wound and are of cylindrical type. Such a type of transformer can be applicable for small sized and large sized transformers. In the small sized type, the core will be rectangular in shape and the coils used are cylindrical. The figure below shows the large sized type. You can see that the round or cylindrical coils are wound in such a way as to fit over a cruciform core section. In the case of circular cylindrical coils, they have a fair advantage of having good mechanical strength. The cylindrical coils will have different layers and each layer will be insulated from the other with the help of materials like paper, cloth, micarta board and so on.
FAQ
1. What standard do you follow?
IEC 60076 standard, and all other major international standard such as ANSI, CSA, UL, etc.
2. What package do you have for transformers?
Standard package with welded iron frame packed with ply wood boxes.
3. How long can I receive my transformers?
The shipping time from our port (shanghai or Ningbo) to your port is range from one week to one month, depend on the distance.
