No-excitation linear tap changer

1. Product introduction

The immersed off-load tap changer is a device used for operating oil-immersed power transformers under the conditions of de-energization or off-load, to adjust the tap positions of the transformer coil and thereby alter the transformer ratio.

2. Product parameters

Three phase Y connected to neutral point linear voltage regulation

Three phase central point voltage regulation

Three phase arbitrary connection linear voltage regulation

single phase

Two phase Product feature and application

• Lead Protection: The static contact has a lead limit hole to prevent the lead from extending out of the static contact and affecting operation.

• Stability: The moving contact with automatic positioning function to prevent misoperation and improve the stability of the tap changer.

• Core Usage: Tap changers are core components for voltage regulation of oil-immersed transformers with a voltage class below 35kV, widely used in medium and low voltage power distribution systems.

Structurally, this type of tap changer features a compact design, simple mechanism and reliable performance. It is mostly designed for off-circuit tap changing, requiring the transformer to be fully powered off before gear adjustment. Made of high-strength insulating materials and wear-resistant conductive parts, it adapts well to the oil-immersed operating environment, with strong resistance to aging, vibration and temperature changes. Its operation is easy, needing only manual rotation to switch taps, and the maintenance workload is low during long-term operation.

In terms of application scenarios, it is mainly deployed in urban and rural distribution networks, industrial parks, residential communities and small power stations. It stabilizes output voltage by adjusting transformation ratio, effectively solving voltage deviation caused by load changes and line loss.

Due to low manufacturing cost, convenient installation and stable operation, these tap changers perfectly match the operational demands of 35kV and below distribution transformers. They have become the mainstream choice for voltage regulation in medium and low voltage power systems, guaranteeing safe and stable power supply for daily production and living.