Capacity
30kVA - 100MVA
Voltage
6kV - 220kV
Frequency
50Hz / 60Hz
From distribution networks to renewable energy systems, our oil immersed transformers deliver dependable power transmission with low noise, reduced operating costs and international-standard manufacturing quality.
Designed to support industrial, commercial and utility-scale applications worldwide.
Rated Capacity: 30-2500kVA
Primary Voltage: 10kv
Secondary Voltage: 0.4kv
Specification: Customized
Certification: GB, CCC, IEC, IEEE, ANSI, UL, CE, KEMA
Level 1 Energy Efficiency
Rated Capacity: 30-2500kVA
Primary Voltage: 10kv
Secondary Voltage: 0.4kv
Specification: Customized
Certification: GB, CCC, IEC, IEEE, ANSI, UL, CE, KEMA
Level 2 Energy Efficiency
Rated Capacity: 30-2500kVA
Primary Voltage: 10kv
Secondary Voltage: 0.4kv
Specification: Customized
Certification: GB, CCC, IEC, IEEE, ANSI, UL, CE, KEMA
Level 3 Energy Efficiency
Rated Capacity: 30-2500kVA
Primary Voltage: 6/6.3/10/10.5/11kv
Secondary Voltage: 0.4kv
Specification: Customized
Certification: GB, CCC, IEC, IEEE, ANSI, UL, CE, KEMA
Level 1 Energy Efficiency
Rated Capacity: 30-2500kVA
Primary Voltage: 6/6.3/10kv
Secondary Voltage: 0.4kv
Specification: Customized
Certification: GB, CCC, IEC, IEEE, ANSI, UL, CE, KEMA
Level 3 Energy Efficiency
Rated Capacity: 20000-31500kVA
Primary Voltage: 35/37kv
Secondary Voltage: 10.5kv
Specification: Customized
Certification: GB, CCC, IEC, IEEE, ANSI, UL, CE, KEMA
Rated Capacity: 10000-63000kVA
Primary Voltage: 110/115kv
Secondary Voltage: 10.5/11/37kv
Specification: Customized
Certification: GB, CCC, IEC, IEEE, ANSI, UL, CE, KEMA
From technical evaluation and core assembly to final testing and global shipment, our integrated manufacturing system ensures stable quality, reliable delivery schedules and consistent transformer performance.
Define voltage class, capacity range and site conditions.
Issue compliant drawings and customized specs.
Apply 7-stage quality control with full records.
Support FOB, CIF and door-to-door logistics.
Designed for medium and high-voltage distribution systems, our oil immersed transformers support utilities, EPC contractors and industrial projects with international-standard performance, strong short-circuit resistance and reliable long-term operation.
Share project voltage, capacity and location details for a custom engineering proposal.
Submit RequirementsOur customization capabilities support EPC contractors, utilities and industrial operators with high-performance oil immersed transformers engineered for demanding power distribution environments.
Custom voltage, capacity, impedance, cooling methods and protection configurations designed around your project requirements.
Lower total procurement cost with stable supply and strict scheduling control.
IEC, CE, CB and regional certificates ready for customs and grid approval.
Capacity, voltage ratio, vector group, cooling and installation all customizable.
Advanced core and winding design improves efficiency and lifecycle performance.
Standard models from 7-10 working days with transparent schedule tracking.
From raw material to shipment packing, every unit follows full inspection records.
FOB, CIF and door-to-door logistics with engineering support after arrival.
Share your voltage class, capacity and site conditions to get a tailored quote.
Send SpecsGlobal buyers often face six recurring risks across compliance, harsh climate reliability, delivery certainty and after-sales response. Our project workflow addresses each risk with measurable controls.
Many imported transformer projects fail early under heat, humidity, dust or salt fog, while incomplete certification files cause customs delay and commissioning disruption.
Deliver compliant documents, environment-adapted design and guided commissioning to reduce downtime risk.
These values are reference ranges for standard and customized models. Final parameters are engineered based on load profile, grid conditions and local compliance requirements.
Selectable according to utility and industrial grid topology.
Cooling configuration selected by load demand and ambient environment.
Our factory operates with over 200 skilled technicians and engineers across a fully integrated 35,000 sq.m production base. Every transformer undergoes strict routine testing, performance inspection and quality verification to ensure long-term operational reliability for global power projects.
15+
YEARS IN PRODUCTION
100+
COUNTRIES DELIVERED
100%
TESTED BEFORE SHIP
Explore real cases from utility upgrades, renewable farms and industrial operations where customized transformer solutions improved reliability and reduced lifecycle cost.
Delivered 32 customized transformers with SONCAP and IEC documentation; outage rate down 92% and annual maintenance cost down 78%.
32 Units
33/11kV
3 Days Early
Supplied 18 units of 22/0.4kV anti-salt fog transformers with TISI documentation; stable operation for 4 years and 12% higher energy efficiency.
18 Units
22/0.4kV
+12% vs Prior
Supplied 12 rugged customized units with dust-proof and shock-proof design plus installation guidance; zero unplanned downtime over 3 years.
12 Units
Mining Site
24/7 Stable
What certifications can you provide for customs and grid approval?
Can you customize voltage, frequency and vector group?
What is your lead time for standard and customized orders?
Do you support third-party inspection before shipment?
Which shipping terms and logistics options are available?
How do you ensure quality consistency for batch orders?
Can your transformers operate in high temperature or coastal areas?
Do you provide commissioning and after-sales technical support?
What information is needed for an accurate quotation?
How fast can you provide a confirmed technical proposal and quotation?
Your Contact
Jinma Electric Co., Ltd.
