Product Introduction
This 5 MVA power transformer was delivered to South Africa in 2015, it’s a step down transformer 33kv to 11kv, the primary voltage is 33kv, the secondary voltage is 11kv, the transformer is equipped with no load tap changer, the tapping range is ±2*2.5% at primary side, the cooling is ONAN, our 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.
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: Liquid Filled Power Transformer
Rated Power: Up to 200 MVA
Primary Voltage: Up to 230 KV
The transformer can be designed according to customer’s requirements
Technical Data Sheet
5 MVA oil type power transformer specifications and data sheet
| Delivered to | South Africa |
| Year | 2015 |
| Model | S11-5 MVA-33/11KV |
| Type | Oil Immersed Power Transformer |
| Standard | IEC60076 |
| Rated Power | 5 MVA |
| Frequency | 50 HZ |
| Phase | Three |
| Cooling Type | ONAN |
| Primary Voltage | 33 KV |
| Secondary Voltage | 11 KV |
| Winding Material | Copper |
| Vector Group | Yd11 |
| Impedance | 7 |
| Tap Changer | NLTC |
| Tapping Range | ±2*2.5% |
| No Load Loss | 5.4 |
| On Load Loss | 38 |
| Accessories | Standard Configuration |
| Remarks | N/A |
5 MVA 33/11KV Transformer Drawing
5 MVA power transformer diagram drawing and size.
5 MVA 33/11KV Transformer Manufacturing Process
SCOTECH have the most strictly quality control plan from transformer design, raw material purchase, core and winding and tank manufacturing, etc, each process has QC inspection.
Finished 5 MVA 33/11KV Transformer
The transformer was painted to gray color (RAL 7035) as customer requirements.
Transformer in the Container
We dismantled the plate type radiators, oil conservators and other accessories and packed them in ply wood boxes, the transformer main body was nude. They are loaded in a 20 feet container.
Installation of Transformers
A power transformer is the second most costly equipment installed in power system. Hence, special care to be taken during installation of a new power transformer in an electrical substation. During accessing the interior of a power transformer, the worker should empty their pockets of all loose articles so that there would not be any risk of falling anything inside the transformer from their pocket.
The tools used during the work, should be securely tied with cotton tap so that they can be recovered if accidentally fall into the transformer interior. Jute should not be used as cleaning materials for a transformer. Loose fibers of the jute may be remained even after completing the cleaning work, which may affect the insulating properties of the equipment in future. Cleaning should be done by clean cotton cloth without any suspended loose fibers. Generally, many parts of a power transformer are transported from manufacturers separately.
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.
