An On Load Tap Changer (OLTC) is an essential voltage control device installed in power and distribution transformers, allowing seamless voltage regulation under load without interrupting the power supply. OLTCs maintain voltage stability in electrical networks by automatically adjusting transformer winding taps while the system is energized, ensuring optimal performance in varying load conditions.

Designed for high reliability and long service life, OLTCs are widely used in substations, grid-connected transformers, industrial power systems, and renewable energy infrastructures. They help reduce voltage fluctuations, improve system efficiency, and enhance the overall reliability of electrical power distribution.

 Features:

• Live voltage regulation without service interruption

• Available in vacuum, resistor-type, or reactor-type switching technology

• Suitable for oil-immersed power and grid transformers

• High-speed and low-wear switching mechanisms

• Microprocessor-based or electromechanical control options

• Remote monitoring and diagnostic capability (optional)

• Compliant with IEC 60214-1, IS 8468, and international standards

Applications:

• Power transmission and distribution transformers

• Utility substations and grid transformers

• Renewable energy integration (solar, wind)

• Industrial power systems and heavy machinery

• Load compensation in urban and rural electrification networks

Technical Specifications: