As modern power infrastructure expands and demands higher reliability, selecting the right 69kV Transformer becomes critical for grid stability, loss reduction, and continuous energy distribution. Manufactured by Shandong Lukong Electric Equipment Co., Ltd., our 69kV Transformers are engineered to deliver robust performance, minimal power losses, and exceptional operational safety for utility networks, industrial substations, and renewable energy integrations worldwide.
To ensure seamless integration into diverse utility grids, our high-voltage power transformer series is built according to international electrotechnical standards:
| Key Parameter | Technical Specification |
| Rated Primary Voltage | 69kV (Customizable up to 72.5kV) |
| Rated Secondary Voltage | 4.16kV, 10kV, 13.8kV, 34.5kV, or customized |
| Cooling Method | ONAN / ONAF / OFAF |
| Voltage Regulation | On-Load Tap Changer (OLTC) / Off-Circuit Tap Changer (OCTC) |
| Insulation Level | Class A / High-grade Mineral Oil or Synthetic Ester |
| Frequency | 50 Hz / 60 Hz |
| Compliance Standards | IEC 60076, IEEE C57, ISO9001, CE |
Every 69kV Transformer produced in our state-of-the-art facility utilizes high-permeability, cold-rolled grain-oriented (CRGO) silicon steel cores. Combined with optimized winding geometry, our designs significantly lower no-load and load losses. This thermal efficiency translates directly into lower operating costs and reduced carbon emissions over the transformer's lifespan.
Fluctuations in power supply can damage downstream equipment. Our 69kV oil-immersed power transformers come equipped with reliable On-Load Tap Changers (OLTC). This allows automatic or remote voltage adjustments under loaded conditions without interrupting power supply, maintaining a stable voltage profile even during peak demand periods.
Built for heavy-duty industrial environments, each 69kV Transformer features reinforced mechanical structures, high-tensile clamping frames, and advanced insulation pressboard. This heavy-duty design provides high short-circuit withstand strength, excellent transient overvoltage protection, and low partial discharge levels (<10pC), guaranteeing decades of uninterrupted service.
Designed to endure extreme weather conditions, our transformer tanks are treated with multi-layer anti-corrosion surface coatings. The hermetically sealed oil tank structure prevents moisture and oxygen ingress, slowing oil degradation and extending maintenance intervals.
Our 69kV Transformer series is widely deployed in high-demand global infrastructure projects, including:
Utility & Distribution Substations: Serving as primary step-down transformers in regional electrical grids.
Renewable Energy Plants: Connecting large-scale solar farms, wind power generation, and energy storage systems (BESS) directly to the high-voltage grid.
Industrial & Mining Complexes: Providing stable, high-capacity electrical power for steel mills, chemical processing plants, and mining operations.
Infrastructure & Transportation: Powering municipal railway grids, port facilities, and large commercial hubs.
At Shandong Lukong Electric Equipment Co., Ltd., we understand that every project comes with unique technical requirements. Backed by over 30 years of manufacturing heritage and a strong R&D team, we offer tailored 69kV Transformer solutions:
Custom Vector Groups & Impedance: Tailored to match your existing network conditions.
Specialized Accessories: Including Buchholz relays, sudden pressure relays, magnetic oil level gauges, and digital monitoring systems.
Comprehensive Factory Acceptance Testing (FAT): Every unit undergoes full routine and type tests before shipment to ensure zero-defect quality.
Looking for a trusted OEM supplier or EPC partner for your next high-voltage project? Contact our engineering team today to receive detailed technical drawings, customized quotation proposals, and complete single-line diagram (SLD) evaluations for your 69kV Transformer requirements.
Email: Ella@ecogreentrans.com
WhatsApp / Phone: +86 18954159606
Location: Jinan City, Shandong Province, China
Shandong Lukong Electric Equipment Co., Ltd. (Lukong) was founded in 1984. It is located in Xiajin County on the northwest plain of Shandong Province, on the bank of the ancient Grand Canal with a history of one thousand years. With a registered capital of 50 million yuan and over 30 years of history, the company is mainly engaged in the R&D and manufacturing of high and low voltage electrical equipment supporting the State Grid and 10kV–220kV transformers...[ Read More >>]
