{"id":629,"date":"2025-11-18T09:50:29","date_gmt":"2025-11-18T01:50:29","guid":{"rendered":"https:\/\/daqotransformers.com\/?post_type=product&p=629"},"modified":"2025-11-18T09:50:47","modified_gmt":"2025-11-18T01:50:47","slug":"oil-immersed-pv-transformer","status":"publish","type":"product","link":"https:\/\/daqotransformers.com\/de\/product\/oil-immersed-pv-transformer\/","title":{"rendered":"Oil-Immersed PV Transformer"},"content":{"rendered":"
\n

Oil-Immersed PV Transformer for Solar Power Stations<\/h2>\n<\/div>\n

The oil-immersed PV transformer is a key power transmission and distribution device<\/strong> widely used in photovoltaic (PV) power stations<\/strong>. It is typically installed in pad-mounted substations<\/strong> (PV-compatible compact substations) or used as a standalone unit. Its main function is to step up the medium-voltage output of PV inverters (such as 0.8 kV or 35 kV) to higher grid transmission voltages<\/strong> (such as 35 kV or 110 kV), ensuring efficient and stable grid integration. As the \u201cgateway\u201d of solar power plants<\/a>, the PV transformer plays a vital role in delivering clean, renewable energy to the grid.<\/p>\n

Key Features of Oil-Immersed PV Transformers<\/h2>\n

High-Temperature Resistance:<\/strong> Designed for significant daily temperature fluctuations in solar farms, with transformer oil and insulation system providing excellent endurance in high-heat conditions.<\/span><\/p>\n

Strong Overload Capacity:<\/strong> Supports full-load and short-term overload operation during peak sunlight, as well as no-load operation at night.<\/span><\/p>\n

Harmonic Handling:<\/strong> Specially engineered to withstand harmonic currents generated by PV inverters, reducing risk of local overheating.<\/span><\/p>\n

Superior Sealing:<\/strong> Fully sealed construction with pressure relief devices prevents moisture, dust, and salt spray intrusion, suitable for desert and coastal environments.<\/span><\/p>\n

Energy-Efficient Design:<\/strong> Optimized for low no-load loss at night and reduced load loss during the day, aligning with PV station efficiency requirements.<\/span><\/p>\n

High Reliability:<\/strong> Durable construction and premium materials ensure long-term stable performance in unmanned PV power stations.<\/span><\/p>\n

Technical Parameters of Oil-Immersed PV Transformer<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Specification<\/td>\nDetails<\/td>\n<\/tr>\n
Installation Conditions<\/td>\nOutdoor installation<\/td>\n<\/tr>\n
Model<\/td>\nS-Series<\/td>\n<\/tr>\n
Rated Capacity<\/td>\n1,000\u20138,000 kVA<\/td>\n<\/tr>\n
Rated Voltage<\/td>\nHigh Voltage (kV): 10.5, 33, 34.5, 35, 36.5, 37, 38.5<\/td>\n<\/tr>\n
Low Voltage (kV): 0.4, 0.8, 1.14<\/td>\n<\/tr>\n
Custom specifications available<\/td>\n<\/tr>\n
Impedance<\/td>\n6.5\u201310%<\/td>\n<\/tr>\n
Insulation Class<\/td>\nClass A<\/td>\n<\/tr>\n
Vector Group<\/td>\nDy11, Yd11<\/td>\n<\/tr>\n
Insulation Level<\/td>\n35 kV: LI170 AC70 \/ AC5<\/td>\n<\/tr>\n
Compliance Standards<\/td>\nEN 60076, IEC 60076, CE<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Advantages of Oil-Immersed PV Transformer Solutions<\/h2>\n

Cost-Effective:<\/strong> Compared to dry-type transformers, \u00d6ltransformatoren<\/a> provide lower manufacturing and procurement costs at equivalent capacity, making them ideal for large and medium-sized PV stations.<\/span><\/p>\n

Minimal Maintenance, Long Service Life:<\/strong> Rugged sealed structure and stable oil-paper insulation system ensure maintenance-free operation and service life of over 25 years.<\/span><\/p>\n

High Efficiency:<\/strong> Reduced no-load and load losses decrease internal power consumption, boosting energy yield and improving return on investment (IRR).<\/span><\/p>\n

Strong Environmental Adaptability:<\/strong> Excellent heat dissipation and sealing allow reliable performance in deserts, hills, coastal sites, and high-altitude regions.<\/span><\/p>\n

Safe and Reliable:<\/strong> Equipped with protective devices such as pressure relief valves and gas relays, ensuring safe and stable grid-connected power generation.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

1. Installation Conditions: Outdoor
\n2. Model: S, SZ Series
\n3. Capacity Range: 30\u201331,500 kVA
\n4. Rated Voltage:
\nHigh Voltage (kV):
\n6, 6.6, 10, 11, 12.47, 13.2, 13.8, 15, 20, 22, 25, 33, 34.5, 35, 38.5
\nLow Voltage (kV):
\n0.38, 0.4, 0.415, 0.433, 0.48, 0.69, 0.72
\nCustom specifications are supported.
\n5. Impedance: 4\u201310%
\n6. Insulation Class: Class A
\n7. Vector Group: Dyn11, Yyn0, Yd11, YNd11
\n8. Insulation Level:
\n10kV: LI75 AC35 \/ AC5
\n20kV: LI125 AC50 \/ AC5
\n35kV: LI170 AC70 \/ AC5<\/p>","protected":false},"featured_media":643,"template":"","meta":[],"product_brand":[],"product_cat":[27],"product_tag":[],"class_list":{"0":"post-629","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-oil-immersed-transformer","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/daqotransformers.com\/de\/wp-json\/wp\/v2\/product\/629","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/daqotransformers.com\/de\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/daqotransformers.com\/de\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/daqotransformers.com\/de\/wp-json\/wp\/v2\/media\/643"}],"wp:attachment":[{"href":"https:\/\/daqotransformers.com\/de\/wp-json\/wp\/v2\/media?parent=629"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/daqotransformers.com\/de\/wp-json\/wp\/v2\/product_brand?post=629"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/daqotransformers.com\/de\/wp-json\/wp\/v2\/product_cat?post=629"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/daqotransformers.com\/de\/wp-json\/wp\/v2\/product_tag?post=629"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}