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20 MVA 33-11kV oil-immersed power transformer

  • 20 MVA 33-11kV  oil-immersed power transformer

  • 20 MVA 33-11kV  oil-immersed power transformer-1

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  • 20 MVA 33-11kV  oil-immersed power transformer-1




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20MVA Three phase  Power Transformer Basic Specifications
Transformer Type Oil-immersed power Transformer 
Manufacture Standard IEC60076
Rating capacity 20MVA
Primary Voltage 33Kv
Secondary Voltage(kV) 11kV
Cooling Way ONAN/ONAF
Vector Group Dyn11
Temperature rise 60/65K
Insulation class A-CLASS
Impedance 10%
Winding Material Copper/Copper
Insulation media Mineral Oil comply with IEC


Design details
1. Every Pearl's Transformer is designed to actual dimensions in 3D CAD system ackage to ensure the correct fixing of all fittings  and accessories.
2.The transformer's core is produced by using interleaved laminations of cold rolled, grain orientated, low loss electrical sheet steel conforming to international standards. The core employs a mitred step-lap design ensuring minimum noise and loss levels with uniform flux distribution throughout the magnetic circuit.                                                               
3.The LV winding of Pearl's transformer is manufactured with high quality foil conductor or copper wire, and the ampere-turn is balanceable. The additional loss is      low and the ability of antii-short is improved.
4. The HV winding is manufactured with high quality copper wire and excellent design structure. It improves the distribution of electric field.


Quality System
Pearl Electric Co., Ltd has approved Quality Management Systems conforming to ISO9001, ISO14001, OHASA18001.
The Pearl's testing Lab is fully equipped with state of the art appraturs to carry out routine test and type test for power transformer and distribution transformer.
   
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