{"id":412,"date":"2026-08-26T10:11:54","date_gmt":"2026-08-26T10:11:54","guid":{"rendered":"https:\/\/demos2us.in\/electric\/?post_type=product&p=412"},"modified":"2026-09-10T08:30:24","modified_gmt":"2026-09-10T08:30:24","slug":"35kv-oltc-power-transformer","status":"publish","type":"product","link":"https:\/\/demos2us.in\/electric\/products\/35kv-oltc-power-transformer\/","title":{"rendered":"35kV OLTC Power Transformer"},"content":{"rendered":"

WEIFAN GROUP 35kV OLTC power transformer which is equiped with OLTC for regulatoring the voltage in an accurate range. It is a main part for used in power transmission and distribution system like substation. It completely complies with IEC 60076 standard for meeting different countries\u2018 needs….<\/p>\n

35kV Three-Phase OLTC Power Transformer<\/p>\n

Manufacturer: WEIFAN GROUP<\/p>\n

The 35kV On-Load Tap Changer (OLTC) power transformer from WEIFAN GROUP is engineered for high-performance voltage regulation in modern power transmission and distribution networks. Featuring a tap changer developed and manufactured in-house, this transformer ensures precise voltage adjustment under load without power interruption. Designed in full compliance with IEC 60076 standards, it meets the technical and operational requirements of international markets.<\/p>\n

Product Highlights<\/p>\n

\u2022Core Construction: Made from high-grade cold-rolled silicon steel sheets to reduce no-load losses and noise levels.<\/p>\n

\u2022Winding Material: High-quality insulated copper conductors provide excellent electrical conductivity and thermal endurance.<\/p>\n

\u2022Sealed Design: Maintenance-free hermetically sealed tank with a service life exceeding 30 years under normal operating conditions.<\/p>\n

\u2022Insulating Oil: Uses top-quality transformer oil (Grade 25# or 40#) for enhanced dielectric strength and thermal performance.<\/p>\n

\u2022In-House OLTC Technology: The on-load tap changer is independently developed by WEIFAN GROUP and features proprietary technology, ensuring stable and accurate voltage regulation.<\/p>\n

Technical Specifications\uff1a<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Parameter\uff1a<\/td>\nSpecification<\/td>\n<\/tr>\n
Application\uff1a<\/td>\nPower Transmission & Distribution<\/td>\n<\/tr>\n
Rated Capacity\uff1a<\/td>\nOn Demand<\/td>\n<\/tr>\n
Rated Primary Voltage\uff1a<\/td>\n35 kV<\/td>\n<\/tr>\n
Rated Secondary Voltage\uff1a<\/td>\n6.3 \/ 6.6 \/ 10 \/ 10.5 \/ 11 kV<\/td>\n<\/tr>\n
Frequency\uff1a<\/td>\n50 \/ 60 Hz<\/td>\n<\/tr>\n
Phase\uff1a<\/td>\nThree-Phase<\/td>\n<\/tr>\n
Winding Configuration\uff1a<\/td>\nTwo Windings (Toroidal Structure)<\/td>\n<\/tr>\n
Connection Group\uff1a<\/td>\nYNd11<\/td>\n<\/tr>\n
Conductor Material\uff1a<\/td>\nCopper<\/td>\n<\/tr>\n
Cooling Method\uff1a<\/td>\nONAF (Oil Natural Air Forced)<\/td>\n<\/tr>\n
Insulation Class\uff1a<\/td>\nAs per IEC 60076<\/td>\n<\/tr>\n
Tap Changer Type\uff1a<\/td>\nOn-Load (OLTC) with WEIFAN proprietary design<\/td>\n<\/tr>\n
Standard Compliance\uff1a<\/td>\nIEC 60076<\/td>\n<\/tr>\n
Certification\uff1a<\/td>\nISO 9001<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Applications<\/p>\n

This transformer is ideally suited for:<\/p>\n

\u2022High-voltage substations<\/p>\n

\u2022Industrial power supply systems<\/p>\n

\u2022Renewable energy grid integration<\/p>\n

\u2022Urban and rural distribution networks<\/p>\n

Advantages<\/p>\n

\u2022High operational reliability and extended service life<\/p>\n

\u2022Energy-efficient with low losses and low partial discharge<\/p>\n

\u2022Environmentally friendly design with reduced maintenance needs<\/p>\n

\u2022Customizable voltage ratings and tap ranges to meet specific grid requirements<\/p>\n

Let me know if you\u2019d like to include dimensional drawings, test data, or specific tender formatting.<\/p>\n","protected":false},"featured_media":413,"template":"","product_category":[37,36],"class_list":["post-412","product","type-product","status-publish","has-post-thumbnail","hentry","product_category-power-transformer","product_category-transformer-equipments"],"acf":[],"_links":{"self":[{"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/product\/412","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/media\/413"}],"wp:attachment":[{"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/media?parent=412"}],"wp:term":[{"taxonomy":"product_category","embeddable":true,"href":"https:\/\/demos2us.in\/electric\/wp-json\/wp\/v2\/product_category?post=412"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}