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High-Voltage Oil Immersed Power Transformer

Introduction:

Xinghe Electric provides customized oil-immersed power transformer solutions for utility substations, industrial power systems and grid connection projects. Primary and secondary voltage ratings, rated capacity, frequency, cooling arrangement, tap changer configuration and applicable standards are specified according to each project's technical requirements.

Our engineering team reviews project specifications to determine the appropriate transformer design, insulation coordination, testing requirements and documentation.

Submit your project specifications for a technical review and quotation.

Product Description

The 110kv three-phase oil-immersed power transformer is manufactured in accordance with the International Electrotechnical Commission standard IEC76 and the People’s Republic of China standard GB1094.1-2-1996/GB1094.3,-1985.

This series of products have excellent impact resistance, good mechanical properties, strong short-circuit resistance, low noise, low loss, good sealing performance, and low maintenance.

Technical Specifications Table

Parameter Specification
Transformer Type Three-phase oil-immersed power transformer
Rated Capacity According to confirmed product range and project requirements
HV Winding Voltage Project-specific rated voltage, subject to engineering confirmation
LV Winding Voltage Customized according to system requirements
Frequency 50Hz or 60Hz, separately designed as specified
Cooling Available cooling arrangements according to model and project requirements
Tap Changer On-load or off-circuit tap changer, where applicable
Vector Group Specified according to winding configuration and system requirements
Short-Circuit Impedance According to the approved technical specification
Insulation Level Determined according to applicable standards and insulation coordination
Applicable Standards Relevant IEC 60076 series or IEEE C57 standards, as specified for the project
Testing Routine tests and applicable type/special tests, with documentation according to the agreed scope
Environmental Conditions Designed for the specified ambient temperature, altitude and installation environment

Voltage ratings, capacity, insulation levels, cooling arrangements, testing scope and compliance documentation are confirmed during technical review. Availability of specific configurations is subject to the manufacturer’s verified engineering and manufacturing capability.

Applications

  • Utility substations and regional power networks

  • Industrial power supply systems

  • Grid connection for renewable energy projects

  • Substation expansion, replacement and modernization

  • EPC and electrical infrastructure projects

Engineering and Testing

Technical requirements are reviewed against the project specification, including rated power, winding voltages, frequency, vector group, impedance, insulation level, tap range, losses, temperature rise, cooling and transportation constraints.

Routine test documentation can be provided according to the agreed product specification. Type tests, special tests and independent third-party testing are subject to the applicable model, existing reports and project requirements.

How to Specify Your Transformer

For a technical proposal, please provide:

  1. Rated HV and LV winding voltages

  2. Rated capacity in MVA

  3. Frequency: 50Hz or 60Hz

  4. Vector group and short-circuit impedance

  5. Tap changer type and required tap range

  6. Applicable standards and required insulation levels

  7. No-load and load loss requirements

  8. Ambient conditions, installation altitude and other environmental requirements

  9. Required quantity, project location and delivery schedule

Certification & Compliance

Our transformers are designed and tested according to the applicable standards specified for each project. Compliance documentation is confirmed during technical review.

  • Design Standards: IEC 60076 series or project-specified IEEE C57 standards.

  • Routine Tests: Applicable routine tests performed on each unit; reports available according to agreed scope.

  • Type & Special Tests: Existing test reports for the relevant model; additional tests can be arranged per project.

  • Market Access: Confirmed case by case according to destination regulations, import requirements, customer specifications and product applicability.

FAQ

Q: Can you manufacture transformers for both 50Hz and 60Hz systems?
A: Yes. 50Hz and 60Hz designs are separately engineered according to the specified rated voltage and operating conditions. They are not interchangeable by nameplate change alone.

Q: What voltage ratios can you customize?
A: HV and LV winding voltages are project-specific. Please provide the required rated voltages for engineering confirmation.

Q: Do you provide IEC and IEEE standard versions?
A: The applicable standard is selected according to project requirements — either the relevant IEC 60076 series or IEEE C57 standards, as specified.

Q: What certifications can you support?
A: Market access and certification requirements are confirmed case by case according to destination regulations and project specifications. Please provide your compliance requirements for review.

Q: What is the typical lead time?
A: Lead time depends on capacity, voltage class, cooling arrangement, testing scope and project schedule. Please submit your specification for a confirmed delivery plan.

Certificate display

All products of the company have passed the national type test like UL、CUL、CCC、CQC、 CTQC、CE、SGS and other national mandatory product certification, and has a perfect quality, occupational health and environmental management system certification system. And also, our products have passed ISO9001, 14001, 45001 and other international quality system certification.

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