Product Introduction
This 7.5 MVA 25KV distribution transformer was delivered to South Africa in 2015, the rated power of the transformer is 7500 KVA. This 7500 KVA Step Down transformer 25kv to 0.4kv, the primary voltage is 25kv, the secondary voltage is 0.4kv. The oil-immersed power transformer has the advantages of low loss, low noise, and high efficiency, which can achieve good energy saving effect and reduce pollution. Our 7.5 MVA power transformer was designed with advanced technology and adopts high quality material 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, oil immersed power transformer is designed in accordance with IEC, ANSI and other major international standards.
Scope of Supply
Product: Oil Immersed distribution Transformer
Rated Power: Up to 5000 KVA
Primary Voltage: Up to 35 KV
Technical Specification
7.5 MVA transformer specifications and data sheet
| Delivered to | South Africa |
| Year | 2015 |
| Model | S11-4 MVA-25/415V |
| Type | Oil Immersed Distribution Transformer |
| Standard | IEC60076 |
| Rated Power | 7.5 MVA |
| Frequency | 50 HZ |
| Phase | Three |
| Cooling Type | ONAN |
| Primary Voltage | 25 KV |
| Secondary Voltage | 0.4 KV |
| Winding Material | Copper |
| Vector Group | Dyn11 |
| Impedance | 7.5% |
| Tap Changer | NLTC |
| Tapping Range | ±2*2.5% |
| No Load Loss | 8 KW |
| On Load Loss | 38.3 KW |
| Accessories | Standard Configuration |
| Remarks | N/A |
7.5 MVA 25/0.4KV Transformer Oil
What is the function of oil in transformer?
It is used in oil-filled transformers, some types of high-voltage capacitors, fluorescent lamp ballasts, and some types of high-voltage switches and circuit breakers. Its functions are to insulate, suppress corona discharge and arcing, and to serve as a coolant.
Finished 7.5 MVA 25/0.4KV Transformer
Packing and Delivery
Solve the problem of high oil temperature:
1. Reduce load and strengthen ventilation and cooling
2. Adjust the three-phase load to make it balanced
3. Check and improve ventilation conditions
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.
