I. Product Introduction

The SZ13 three-phase oil-immersed on-load tap-changing power transformer is a new generation of ultra-high efficiency energy-saving distribution equipment that meets national energy efficiency standards. It is specially designed for 50 Hz AC power distribution systems. Adopting high-quality cold-rolled oriented silicon steel sheets, optimized magnetic circuit structure and mature and reliable on-load tap-changing device, it can automatically and accurately adjust the output voltage under load conditions without power interruption, effectively solving problems such as large grid voltage fluctuation and frequent load changes.

The transformer features ultra-low loss, ultra-low noise, robust structure, strong short-circuit withstand capability, safety, reliability and long service life. With outstanding energy-saving performance, it has become the mainstream preferred energy-saving equipment for urban and rural power grids, industrial and commercial users, infrastructure and key power consumers.

II. Technical Parameters（customizable）

• Rated capacity: 100 kVA ～ 2500 kVA

• Voltage class: 10 kV / 0.4 kV

• Voltage regulation mode: On-load tap-changing

• Cooling mode: ONAN (Oil-Immersed Natural Air Cooling)

• Connection group: Dyn11, Yyn0

• Insulation class: Class B

• Executive standards: GB/T 6451, GB 1094

III. Main Features

1. Ultra-high energy efficiency, remarkable energy-saving effect

   Adopting high-permeability silicon steel sheets and optimized design, the no-load and load losses are much lower than the national standard requirements. It can greatly reduce power consumption during long-term operation, bringing obvious economic benefits.

2. Stable on-load voltage regulation, high power quality

   Equipped with a reliable on-load tap-changer, it can realize stepless or graded voltage regulation without power outage, ensuring stable output voltage and meeting high-standard power supply requirements.

3. Low noise, environment-friendly

   With optimized body structure, low-vibration design and effective noise reduction measures, the operation noise is significantly reduced, making it especially suitable for residential areas, schools, hospitals and other noise-sensitive places.

4. Strong short-circuit withstand capability, safe and reliable

   The winding has high mechanical strength and stable overall structure, with excellent resistance to short-circuit impact, ensuring safe and stable operation under complex working conditions.

5. Fully sealed structure, easy maintenance

   Adopting fully sealed structure to effectively prevent insulation oil aging, oxidation and leakage. It is maintenance-free and core lifting-free during operation, greatly reducing daily maintenance workload and cost.

6. Complete protection, long service life

   Equipped with complete protection devices and reliable structural design, the transformer has strong environmental adaptability, stable operation and long service life.

IV. Application Scenarios

Suitable for places with high requirements for energy efficiency, voltage stability and low noise, such as urban and rural power grids, industrial parks, residential quarters, commercial buildings, hospitals, schools, data centers, factories, mines and other industrial and mining enterprises.