Product Introduction
This 1 MVA oil type distribution transformer was delivered to South Africa in 2015, the rated power of the transformer is 1000 KVA. the primary voltage of the transformer is 11 KV and secondary voltage is 0.415 KV. Our 1 MVA electrical 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, our 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
1 MVA transformer specification and data sheet
| Delivered to | South Africa |
| Year | 2015 |
| Model | S11-1000 KVA-11/0.415KV |
| Type | Oil Immersed Distribution Transformer |
| Standard | IEC60076 |
| Rated Power | 1000 KVA |
| Frequency | 50 HZ |
| Phase | Three |
| Cooling Type | ONAN |
| Primary Voltage | 11 KV |
| Secondary Voltage | 0.415 KV |
| Winding Material | Copper |
| Vector Group | Dyn11 |
| Impedance | 4.5%~5.5% |
| Tap Changer | NLTC |
| Tapping Range | ±2.5%&±5.0% |
| No Load Loss | 1.15 KW |
| On Load Loss | 10.3 KW |
| Accessories | Standard Configuration |
| Remarks | N/A |
General Arrangement Drawing
1 MVA transformer dimensions and weight details
1 MVA 11/0.415KV Transformer Manufacturing
Transformer insulation
The insulation of transformer includes interturn insulation, interlayer insulation and intersegment insulation，To prevent internal discharge of transformer.
Finished 1MVA 11/0.415KV Transformer
Transformer Testing
Routine tests of transformer include
1、Winding resistance test of transformer
2、Transformer ratio test
3、Transformer vector group test
4、Measurement of impedance voltage/short circuit impedance (principal tap) and load loss (Short circuit test)
5、Measurement of no-load loss and current (Open circuit test
6、Measurement of insulation resistance
7、Dielectric tests of transformer.
8、Tests on-load tap-changer.
9、Oil pressure test on transformer to check against leakages past joints and gaskets
Packing and Delivery
Attention：
Special attention shall be paid to the installation of the transformer when the vehicle enters the station, and the direction of the bushing at the high and low voltage side of the transformer shall be consistent with the design installation direction; the binding of the transformer after loading shall be firm.
Installation Commissioning and Operation
Transformer installation materials
The transformer shall be fitted with a name plate. The name of manufacturer, rated capacity, primary and secondary rated capacity, primary and secondary rated voltage, current, impedance, voltage and wiring group shall be indicated on the name plate. The capacity, specification and model of the transformer must meet the design requirements. The accessories are complete with factory certificate and technical documents.
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.
