Product Introduction
The 8 MVA auto power transformer was delivered to South Africa in 2022.
The rated power of the oil Immersed transformer is 8000 KVA with ONAF cooling, the primary voltage is 33 kV with ±10*1.5% tapping range(OLTC), the secondary voltage is 33 kV, they formed a vector group of YNa0.
The 8 MVA power transformer was designed with advanced technology and adopts high quality material and components which result in reliable quality and long operation time.
We ensure that each one of our delivered units has undergone rigorous full acceptance testing. We provide one-package service from consulting, quoting, manufacturing, installation, commissioning, training to after sale services, our products are now operating in more than 50 counties in the world. We aim to be your most reliable supplier as well as your best partner in business!
Scope of Supply
Product: Oil Immersed Power Transformer
Rated Power: Up to 200 MVA
Primary Voltage: Up to 230 KV
Technical Specification
8 MVA power transformer specification and data sheet
| Delivered to | South Africa |
| Year | 2022 |
| Model | OSFZ-8 MVA-33/33 KV |
| Type | Oil Immersed Power Transformer |
| Standard | IEC60076 |
| Rated Power | 8 MVA |
| Frequency | 50 HZ |
| Phase | Three |
| Cooling Type | ONAF |
| Primary Voltage | 33 KV |
| Secondary Voltage | 33 KV |
| Winding Material | Copper |
| Vector Group | YNa0 |
| Impedance | 0.98% |
| Tap Changer | OLTC |
| Tapping Range | ±10*1.5% |
| No Load Loss | 2.5 KW |
| On Load Loss | 16 KW |
| Accessories | Standard Configuration |
| Remarks | N/A |
8 MVA-33/33 KV Power Transformer Drawing
8 MVA power transformer diagram drawing and size.
8 MVA-33/33 KV Power Transformer Manufacturing Process
Transformer windings:
Windings are key components of the transformer, they are made of high-quality oxygen free copper, with our advanced technology and experience, our windings have the following features:
1. The windings are able to withstand lighting overvoltage, transient overvoltage, longtime overvoltage.
2. High heat resistant strength, it’s able to continuous working over 20 years under the heat generate by current.
3. The windings are able to withstand the short-circuit current.
4. High mechanical strength.
Transformer Oil Tank
Final Assembly：
8 MVA-33/33 KV Transformer Testing
Packing and Delivery
Installation Commissioning and Operation on the site.
What is oil filled self-cooled type transformer?
Oil filled self-cooled type uses small and medium-sized distribution transformers. The assembled windings and core of such transformers are mounted in a welded, oil-tight steel tanks provided with a steel cover. The tank is filled with purified, high quality insulating oil as soon as the core is put back at its proper place. The oil helps in transferring the heat from the core and the windings to the case from where it is radiated out to the surroundings.
For smaller sized transformers the tanks are usually smooth surfaced, but for large size transformers a greater heat radiation area is needed, and that too without disturbing the cubical capacity of the tank. This is achieved by frequently corrugating the cases. Still larger sizes are provided with radiation or pipes.
FAQ
1.How soon can you delivery the transformer?
It depends on the quantity and capacity of the transformer, normally within one month since the date drawing confirmed by buyer.
2.How long can you provide the quality warranty?
12 months since the date transformer operated.
3.What payment method do you accept?
T/T (wire transfer), L/C both accepted.
