Power Transformers
Delta Star power transformers are individually designed and manufactured to exceed the highest industry standards and the exact specifications for the particular application.
Applications
Delta Star specializes in engineering and manufacturing of high quality transformers up to 315 kV, 300MVA in both single and three phase configurations up to 1175 BIL. Utility applications include power, distribution, generator step up, unit auxiliaries (UAT), grounding units, voltage regulators and auto transformers.
Scope & Capabilities
| Type | MVA (Top Rating) | HV kV |
|---|---|---|
| Power Transformer | 200 | 15-315 |
| Auto Transformer | 300 | 69-315 |
| Voltage Regulator | 7 | 5-69 |
| Grounding Transformer | – | 15-115 |
| Generator Step-up | Same Ratings as Type 1 & 2 | |
| Unit Auxiliary | 60 | 15-34.5 |
| Skid Mounted Substations | 100 | 15-230 |
Engineering Capabilities
Delta Star’s engineers use reliable, accurate and state-of-the-art special transformer design software (TDS). TDS includes optimization package (TRDO) for all types of designs, 3D magnetic field analysis (ELMAG 3D) for calculation of the losses and temperature rise of metallic components, 2D electrostatic field analysis (2D TELAX) for optimization of windings insulation structure and WELDINST for short circuit analysis (forces and stresses) including Dynamic Mode for axial forces and displacement of each section of the windings.
Test Standards
Leveraging decades of experience, our test engineers and technicians measure performance data throughout manufacturing to verify compliance to design criteria. Testing to IEEE, ASTM, NEMA and ISO 9001:2015 technical and quality standards, all routine, design and special testing plans are laid out by design engineering.
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C57.12.90 IEEE Standard Test Codes Used
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C57.12.90 IEEE Standard Test Codes Used
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C57.12.90 IEEE Standard Test Codes Used
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C57.12.90 IEEE Standard Test Codes Used
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C57.12.90 IEEE Standard Test Codes Used
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C57.12.90 IEEE Standard Test Codes Used
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Low Voltage Testing
Loss Measurement
Thermal Testing
Sound Level Testing
Functional Control Test
High Voltage Dielectric
