Tap changers core voltage regulating components for oil immersed transformers rated up to 35 kV

Tap‑changers core voltage‑regulating components for oil‑immersed transformers rated up to 35 kV

1. Company Introduction

Founded in 2001, Liaoning Jinli Electric Power Electrical Appliance Co., Ltd. boasts a registered capital of RMB 5 million. As a national‑level high‑tech enterprise, we focus on the R&D, manufacturing and sales of a full range of transformer tap‑changers. The company holds national intellectual property advantage enterprise certification and operates a provincial‑level enterprise technology center.Our products are supplied to over 20 countries and regions worldwide, including South Korea, Russia, Switzerland, Australia, Thailand, India and Peru.Key export product lines cover off‑circuit linear tap‑changers, disc‑type tap‑changers, plate‑type tap‑changers, as well as 10‑35 kV on‑load tap‑changers.

2. Product Features and Applications

Tap‑changers serve as core voltage‑regulating components for oil‑immersed transformers rated up to 35 kV, and are widely adopted within medium‑ and low‑voltage distribution systems. Structurally, this series of tap‑changers delivers compact construction, straightforward mechanical design and dependable performance. Classified as off‑circuit tap‑changers, tap‑position adjustment must be carried out only after the transformer is completely de‑energized. Constructed from high‑strength insulating materials and wear‑resistant conductive components, the units are well‑adapted to oil‑immersed service conditions and exhibit excellent resistance to ageing, vibration and temperature fluctuations. Operation is simple: tap selection is accomplished via manual rotation, resulting in minimal maintenance requirements throughout the service life. Typical application fields include urban‑rural distribution networks, industrial parks, residential complexes and small‑scale power stations. By modifying the transformer transformation ratio, the tap‑changer stabilizes output voltage and effectively compensates for voltage deviations induced by load fluctuations and line losses. Benefiting from low production costs, easy installation and stable operational performance, these tap‑changers are ideally suited for 35 kV‑and‑below distribution transformers. They represent the mainstream voltage‑regulation solution for medium‑ and low‑voltage power systems, ensuring safe and reliable power supply for industrial production and residential consumption.

3. Company Qualifications

Our company has implemented integrated management systems covering product quality, environmental protection and occupational health & safety. We are certified to ISO 9001 Quality Management System, ISO 14001 Environmental Management System and ISO 45001 Occupational Health and Safety Management System, which underpin our standardized practices throughout production, processing and testing procedures.

For global‑market access, our transformer tap‑changers conform to European Union requirements and carry CE marking together with RoHS compliance. These qualifications verify that our products satisfy EU safety, health and environmental protection criteria, including the hazardous‑substance restrictions laid down in the RoHS Directive.

Supported by the above certifications, we strictly follow both domestic and international standards. This enables us to deliver safe, reliable and eco‑friendly products to customers across the world.