{"id":2237,"date":"2025-06-04T06:26:27","date_gmt":"2025-06-04T06:26:27","guid":{"rendered":"https:\/\/ev-chargerstations.com\/?post_type=product&p=2237"},"modified":"2025-07-09T03:54:48","modified_gmt":"2025-07-09T03:54:48","slug":"heavy-66kv-69kv-high-voltage-transformer-10mva-to-80mva-grid-connected-utility-transformer","status":"publish","type":"product","link":"https:\/\/energypowertransformer.com\/zh\/manufacturer\/heavy-66kv-69kv-high-voltage-transformer-10mva-to-80mva-grid-connected-utility-transformer\/","title":{"rendered":"\u91cd\u578b 66kV\/69kV \u9ad8\u58d3\u8b8a\u58d3\u5668 10MVA \u81f3 80MVA \u4e26\u7db2\u516c\u7528\u8b8a\u58d3\u5668"},"content":{"rendered":"

Heavy 66kV\/69kV High Voltage Transformer (10\u201380 MVA) \u2013<\/strong>Features<\/strong><\/span><\/h2>\n

The 66kV\/69kV oil-immersed high voltage transformer<\/a> is purpose-built for medium-scale substation deployment, renewable energy integration, and industrial grid reinforcement. With rated power ranging from 10 MVA to 80 MVA, this three-phase transformer serves as a critical link between generation and distribution networks across various voltage tiers.<\/p>\n

Engineered with a Y-connected or Delta-connected high voltage winding, the unit offers customizable secondary voltages such as 13.2 kV, 12.47 kV, 11 kV, or 4.16 kV, meeting diverse regional and utility specifications. The magnetic core is made of high-grade cold-rolled grain-oriented silicon steel, reducing no-load losses, while the precision-wound copper conductors ensure low load loss and high thermal endurance.<\/p>\n

The transformer is housed in a sealed, welded steel tank with corrugated fins or radiator banks, filled with thermally stable mineral or biodegradable ester oil, enabling excellent insulation and heat dissipation. High-voltage bushings, pressure relief valves, gas relays, and thermometer ports are standard, while advanced add-ons like on-load tap changers (OLTC), digital monitoring systems, and smart IoT modules can be optionally integrated.<\/p>\n

Each unit is subjected to routine and type tests, including full-load and lightning impulse testing, ensuring reliability under demanding grid conditions. The design complies with IEC, ANSI<\/a>, IEEE, CSA, UL, and GOST standards, supporting safe operation, long lifecycle, and low maintenance.<\/p>\n

Energy Transformer offers OEM branding, private-label services, and flexible production runs for global clients. These transformers are extensively exported to North America (USA, Canada, Mexico) and South America (Brazil, Argentina, Chile, Colombia, Peru, Ecuador), serving utilities, EPC contractors, solar<\/a> and wind projects, and regional distribution authorities.<\/p>\n

Learn More<\/span>\uff1aHigh Voltage 220kV\/230kV Step-Down Power Transformer for Substations | 50\u2013500 MVA Oil-Immersed<\/a><\/span><\/p>\n

Heavy 66kV\/69kV High Voltage Transformer (10\u201380 MVA)\u00a0<\/strong>Technical Specs<\/strong><\/span><\/h2>\n\n