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Auxilary Transformers
| Power Rating | 5kva, 10kva, 25kva, 50kva, 100kva |
| Number of Phase | 1-Phase |
| Cooling Type | Oil Cooled |
| Voltage Ratio | 25kV/240v |
| Winding Material | Copper |
| Standards | asper RDSO, CORE Standards |
| Brand | Electromec |
Auxilary Transformers
Auxiliary transformers, also known as distribution transformers, are essential components in electrical
distribution systems. Unlike power transformers that primarily handle high-voltage transmission,
auxiliary transformers are designed to step down the voltage from the primary distribution level
(typically medium voltage) to the secondary distribution level (usually low voltage) suitable for
consumer use. They play a crucial role in supplying electricity to residential, commercial, and industrial
areas by reducing voltage levels to safe and usable levels for appliances, lighting, and other electrical
devices.
Auxiliary transformers are characterized by their compact size, robust construction, and high efficiency,
making them suitable for installation in various locations such as pole-mounted, pad-mounted, or
underground installations. They typically operate continuously and are designed to withstand varying
loads while maintaining stable voltage output. Additionally, they incorporate safety features such as
overload protection and insulation to ensure reliable and safe operation.
Auxiliary Transformers: Essential Components in Power Systems
Auxiliary transformers are specialized transformers that play a crucial role in various power systems,
including:
- Power Generation Stations: They provide power to essential equipment within a power plant for continued operation (e.g., pumps, fans, lighting, control systems).
- Substations: They supply power to substation equipment such as lighting, control systems, protection relays, and other auxiliary devices.
- Railways: They provide power for onboard systems in trains, such as lighting, air conditioning, ventilation, and other passenger amenities.
Key Functions
- Voltage Step-Down: Auxiliary transformers reduce high voltages from transmission lines or generators to lower, more usable voltages for various on-site equipment.
- Power Supply for Auxiliaries: They ensure a reliable power source for all critical auxiliary systems within a power system, independent of the main power flow. This keeps essential equipment running even during maintenance or disruptions to the main power grid.
- System Isolation: In some cases, auxiliary transformers provide electrical isolation between different sections of a power system, enhancing safety and stability.
Types of Auxiliary Transformers
- Unit Auxiliary Transformers (UAT):: : Used in power generation stations, directly connected to the generator output.
- Station Auxiliary Transformers (SAT): Found in substations, powering substation equipment.
- Onboard Auxiliary Transformers: Used in railways to power train systems.