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A distribution transformer is a type of transformer used to step down voltage levels from high transmission voltages to lower voltages suitable for distribution to residential and commercial users. These transformers are typically made of copper or aluminum windings and a core made of silicon steel, which helps to minimize energy losses. They are essential components in power distribution networks, ensuring that electricity is delivered safely and efficiently to end users.
| Power Rating | Typically ranges from 10 kVA to 2500 kVA |
| Voltage Levels | Primary voltages from 2.4 kV to 34.5 kV, secondary voltages from 120 V to 480 V |
| Cooling Type | Oil-immersed or dry-type |
| Efficiency | Typically between 95% and 99% |
| Frequency | 50 Hz or 60 Hz |
| Insulation Class | Class A, B, or F |
When selecting a distribution transformer, consider the power rating and voltage levels that match your specific application. It's important to specify the cooling type based on the installation environment, as well as the required efficiency and insulation class. Additionally, inquire about any necessary certifications and tolerances that may be relevant for your project, and provide estimated quantities to receive accurate quotes.
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To step down high voltage electricity for safe distribution to end users.
Calculate the total load in kVA and choose a transformer that meets or exceeds this rating.
The most common methods are oil-immersed and dry-type cooling.
Yes, they typically have efficiencies ranging from 95% to 99%.
They operate at primary voltages from 2.4 kV to 34.5 kV and secondary voltages from 120 V to 480 V.
Look for compliance with industry standards such as ANSI, IEEE, or IEC.