No. 9, Longding Road, Industrial Cluster Zone, Yichuan County, Luoyang City, China

PRODUCT

30KV-38KV series oil immersed transformer

LUOYANG XINGNIU TRANSFORMER CO., LTD.

35kV Power Transformer     Technical Data Sheet   A4 Vertical • English Version
GENERAL DATA
Type: Three-phase oil-immersed power transformer
Rated Voltage: 35±2×2.5% / 0.4 kV                                       Frequency: 50 Hz
Rated Capacity: 500–2500 kVA                                              Connection Group: Dyn11
Cooling System: ONAN (Oil Natural Air Natural)               PERFORMANCE DATA

Short-circuit Impedance: 6.5%                                                No-load Loss: ≤ 1.2 kW
Load Loss (at 75°C): ≤ 9.6 kW                                                 No-load Current: ≤ 0.8%
Insulation Level: LI200AC95 / LI75AC35 kV                      SERVICE CONDITIONS

Ambient Temperature: -25°C ~ +40°C                                 Altitude: ≤ 1000 m
Temperature Rise: Winding 65 K / Top Oil 55 K                Protection Class: IP20

CONSTRUCTION

Core: High-grade CRGO silicon steel                                   Winding: Full copper conductor
Tank: Sealed corrugated steel tank

Standard Accessories:Oil level indicator, thermometer,
pressure relief valve, breather
STANDARDS     IEC 60076     GB 1094

Application scope:

Used for voltage level conversion of urban power grids, 35KV and 10KV, meeting the stable power demand of large production lines and high-power equipment, adapting to harsh outdoor environments such as high altitude, frequent sandstorms, and humidity.

30kv 38kv series oil immersed transformer     30kv 38kv series oil immersed transformer      30kv 38kv series oil immersed transformer     30kv 38kv series oil immersed transformer

 

 

 

Application Scope of 35kV Transformers:

A 35kV transformer is a core equipment in the medium-voltage power grid, mainly used for step-down power distribution (35kV ↔ 10kV/6kV/0.4kV) and step-up grid connection (low voltage → 35kV). Its application scope covers power grids, industry, new energy, transportation, municipal engineering and other fields.

I. Power Grid Transmission and Distribution (Core Application)

– Medium and Small-Scale Substations: It realizes voltage conversion from 110kV to 35kV, then to 10kV/6kV, serving as the backbone of urban and rural distribution networks.
– Box-Type Substations/Pre-installed Substations: Directly step down 35kV to 10kV/0.4kV, applicable to residential communities, industrial parks and temporary power supply scenarios.
– Rural and Urban Power Grid Renovation: Used for distribution network construction in towns, industrial zones and load centers to improve power supply coverage and stability.

II. Industry and Mining (High-Power Scenarios)

– Metallurgy, Petrochemical, Mining, Machinery Manufacturing: 35kV power is directly supplied to factory areas, then stepped down to 10kV/6kV/380V to power large-scale motors, rolling mills, drilling rigs, compressors and other high-power equipment.
– Large-Scale Factories/Industrial Parks: Self-built 35kV substations are adopted for centralized power supply, which helps reduce line loss and ensure stable power supply for production.

III. New Energy and Small-Scale Power Generation (Step-Up Grid Connection)

– Wind and Photovoltaic Power Stations: Convert the low voltage (0.69kV/1kV) from generating units to 35kV for power collection, then connect to the public power grid.
– Small-Scale Power Plants: Including garbage power plants, straw power plants and small hydropower stations, which step up the terminal voltage (10kV) of generators to 35kV for grid connection.

IV. Transportation and Infrastructure

– Subways, Light Rail, Tunnels, Railway Stations, Airports: 35kV power supply is adopted to meet the power demand of traction systems and lighting loads.
– High-Rise Buildings, Commercial Centers, Data Centers: 35kV power is fed into the system and then stepped down to meet the high-density power consumption needs of these scenarios.

V. Special Scenarios

– Offshore Platforms, Ships, Oilfields: 35kV transformers are adapted to special environments and high-power equipment, ensuring reliable power supply in harsh working conditions.
– Box-Type/Modular Substations: Integrate 35kV transformers with switchgear for rapid deployment, suitable for emergency power supply and temporary construction sites.

VI. Typical Voltage Transformation Combinations

– Step-Down Transformation: 35kV → 10kV/6kV (mainstream in distribution networks); 35kV → 0.4kV (direct supply for low-voltage equipment).
– Step-Up Transformation: 0.69kV/10kV → 35kV (applied in new energy projects and small-scale power plants).

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