3 Phase 10kv 400v 30kva 50kva 80kva 100kva 10kv Oil Immersed Transformer

3 Phase 10kv 400v Step Up Transformer Electricity 30kva 50kva 80kva 100kva 10kv Oil Immersed Transformer

1. Product Description

3 Phase 10kv 400v Step Up Transformer Electricity 30kva 50kva 80kva 100kva 10kv Oil Immersed Transformer is a complete series of low-loss three-phase oil immersed step-up power transformers, covering four mainstream small and medium capacity grades including 30kVA, 50kVA, 80kVA and 100kVA. This 10kV class step-up transformer is professionally designed for three-phase low-voltage to medium-voltage power conversion, stably boosting standard 400V industrial and civil three-phase electricity up to 10kV medium voltage to meet long-distance power transmission and medium-voltage grid access requirements. Manufactured based on upgraded S11 and S13 low-loss technical standards and fully compliant with IEC 60076 and GB/T 1094 international power industry norms, this oil filled step-up transformer delivers stable voltage conversion accuracy and reliable operational safety for distributed power generation, rural grid renovation and temporary engineering power supply systems.

Different from conventional step-down distribution transformers widely used for terminal power consumption, this 400V to 10kV step-up oil immersed transformer focuses on front-end power elevation and power transmission efficiency optimization. Adopting high-purity oxygen-free copper three-phase windings and low-loss grain-oriented silicon steel core materials, the equipment effectively reduces no-load excitation loss and full-load operating heat generation during voltage boosting processes. The optimized Yd11 three-phase winding structure ensures balanced voltage output, suppresses three-phase current imbalance and filters most grid harmonic interference. Equipped with a fully sealed corrugated oil tank and standard ONAN oil natural air natural cooling system, the transformer isolates internal insulating components from external dust, moisture and corrosive air, avoiding insulating oil aging, insulation damp and common oil leakage faults. With multi-capacity flexible coverage, this 10kV oil immersed step-up transformer can accurately match various small and medium-scale power boosting scenarios, serving as one of the most practical and cost-effective medium-voltage power conversion equipment in current low-to-high voltage engineering projects.

2. Main Technical Parameters

The table below lists complete standardized technical parameters of 3 Phase 10kv 400v Step Up Transformer Electricity 30kva 50kva 80kva 100kva 10kv Oil Immersed Transformer. All electrical performance indicators, cooling specifications, insulation standards and structural parameters meet industrial first-class energy efficiency requirements and grid access inspection standards, supporting precise model selection, on-site installation guidance and daily operational maintenance:

3. Core Purpose

The core purpose of 3 Phase 10kv 400v Step Up Transformer Electricity 30kva 50kva 80kva 100kva 10kv Oil Immersed Transformer is to solve the technical pain point of low-voltage power unable to adapt to long-distance transmission and medium-voltage grid access. In most decentralized power generation and on-site power supply scenarios, the original generated electricity or temporary power is 400V three-phase low voltage, which suffers severe voltage drop and large line loss during long-distance transmission and cannot be directly connected to 10kV medium-voltage distribution networks. This professional oil immersed step-up transformer stably converts 400V low-voltage electricity into standard 10kV medium-voltage electricity, realizing voltage level upgrading and standardized power transmission.

This multi-capacity 10kV step-up transformer series undertakes key core functions including power transmission loss reduction, grid power quality optimization, circuit safety isolation and voltage stabilization. The 30kVA and 50kVA small-capacity models are suitable for ultra-light and light-load decentralized power boosting, while 80kVA and 100kVA medium-capacity versions meet conventional medium-load power elevation demands. By elevating low voltage to 10kV medium voltage, it effectively reduces transmission line current, cuts down line power loss, improves remote power supply quality, and ensures safe, compliant and efficient grid connection for small photovoltaic power stations, wind power equipment and on-site generator sets, providing reliable voltage conversion support for rural power grid upgrading and engineering temporary power systems.

4. Application Scenarios

Thanks to diversified capacity matching, stable step-up performance, low operating loss and excellent outdoor environmental adaptability, 3 Phase 10kv 400v Step Up Transformer Electricity 30kva 50kva 80kva 100kva 10kv Oil Immersed Transformer covers almost all small and medium-scale 400V to 10kV power boosting scenarios. It is the most widely used low-cost and high-reliability step-up transformer for new energy, rural power grids and engineering temporary power projects:

• Small Distributed Photovoltaic Grid Connection: Perfect for household and small industrial rooftop photovoltaic power stations. The 400V low-voltage power generated by solar panels is boosted to 10kV medium voltage through this oil immersed step-up transformer, realizing safe grid-connected power transmission and solving the problem of low-voltage power inability to transmit over long distances.

• Rural & Remote Area Grid Renovation: Widely applied in mountainous rural areas and remote villages with insufficient power supply. Long-distance 400V low-voltage transmission causes serious voltage drop and unstable power supply; 10kV step-up power transmission effectively reduces line loss and improves terminal power supply stability for remote users.

• Construction Site Temporary Power Supply: Suitable for field construction, road engineering, water conservancy projects and remote mining operations. It boosts 400V generator temporary power to 10kV medium voltage for long-distance power supply to remote construction sections, eliminating on-site power supply dead zones.

• Small Wind Power Generation Systems: Matched with decentralized small wind turbine equipment. It converts fluctuating 400V wind power into stable 10kV medium voltage, optimizes grid-connected power quality, and improves the utilization rate of new energy power generation.

• Industrial Self-provided Power Generation: Used for small factory waste heat power generation and emergency generator power boosting. It elevates self-generated 400V electricity to 10kV for internal factory medium-voltage distribution or surplus power grid-connected transmission, realizing efficient energy reuse.

• Township Micro Substation Supporting: Serves as supporting voltage conversion equipment for township mini distribution substations, providing stable 10kV medium-voltage power sources for local small-scale power distribution networks and realizing hierarchical and refined power grid management.

5. Product Features

3 Phase 10kv 400v Step Up Transformer Electricity 30kva 50kva 80kva 100kva 10kv Oil Immersed Transformer adopts mature S11/S13 low-loss oil immersed manufacturing technology and professional step-up winding optimization design. Compared with dry-type step-up transformers and old-generation high-loss oil immersed products, this series has obvious practical advantages in stability, energy-saving performance and environmental adaptability, fully adapting to long-term unattended outdoor operation:

• Full-capacity Series Matching: Covering 30kVA, 50kVA, 80kVA and 100kVA four mainstream capacities, it can precisely match light-load and medium-load power boosting demands of different projects. Users can select targeted models according to actual power generation capacity and transmission load, avoiding capacity waste or insufficient load margin, with ultra-high project compatibility.

• Stable 400V to 10kV Step-up Performance: Optimized Yd11 three-phase balanced winding structure ensures accurate voltage elevation, effectively inhibits three-phase current imbalance and power grid harmonics. Even facing fluctuating input voltage from new energy equipment, it can maintain stable 10kV output voltage, ensuring consistent power quality for subsequent transmission and grid connection.

• Ultra-low Operating Loss & Energy Saving: Adopting high-conductivity pure copper windings and high-permeability low-loss silicon steel core, the transformer greatly reduces no-load loss and load operating loss during voltage conversion. Long-term operational power consumption is significantly lower than traditional transformers, bringing continuous energy-saving benefits for grid and project operation.

• Strong Overload & Short-circuit Resistance: Internal windings adopt integral reinforcement and anti-shock structure design, with strong tolerance to instantaneous overload and short-circuit impact. It can cope with frequent load fluctuation of new energy power generation and sudden current surge of temporary power supply, effectively reducing equipment failure rate.

• Fully Sealed Maintenance-free Structure: Integral welded corrugated oil tank adopts fully sealed design, which completely isolates internal insulating oil and core components from external humid air, dust and corrosive substances. It prevents insulating oil aging and insulation damp, eliminates traditional oil leakage faults, and basically realizes maintenance-free outdoor operation.

• Superior All-weather Outdoor Adaptability: Adopting heavy-duty anti-corrosion electrostatic spraying process and 10kV high-grade insulation configuration, the equipment resists high temperature, low temperature, rain erosion and wind sand aging. The mature ONAN natural cooling system ensures stable heat dissipation, supporting 24-hour uninterrupted operation in rural, field and other harsh outdoor environments.

6. FAQ (Frequently Asked Questions)

Q1: How to select the right capacity from 30kVA, 50kVA, 80kVA and 100kVA 10kV step-up transformers?

Capacity selection depends on actual continuous operating load and future expansion demand. The 30kVA and 50kVA models are suitable for small household photovoltaic systems, ultra-light-load rural power grid renovation and mini temporary power supply projects, featuring lower no-load loss and better energy-saving performance under light loads. The 80kVA model is the most cost-effective universal model, matching most conventional small and medium-sized new energy grid connection and township power upgrading projects. The 100kVA high-capacity version is recommended for medium-sized distributed power stations and projects with possible load growth, reserving sufficient peak load margin to avoid equipment overload operation and later capacity replacement.

Q2: Why choose oil immersed type instead of dry type for 400V to 10kV step-up scenarios?

For outdoor long-term operation and unattended engineering scenarios, oil immersed step-up transformers have more practical value. First, the ONAN oil natural circulation cooling system provides more uniform and stable heat dissipation, with stronger continuous full-load operation capability and better overload resistance than dry-type transformers. Second, the fully sealed oil tank structure has excellent moisture-proof, dust-proof and anti-aging performance, adapting to complex outdoor environments such as rural areas and construction sites where dry-type equipment is prone to damp failure. In addition, this series of 10kV oil immersed transformers has lower manufacturing cost, longer service life and simpler daily maintenance, which is more suitable for large-scale popularization in power grid renovation and new energy projects.

Q3: Can this 10kV three-phase step-up transformer adapt to unstable new energy power input?

Yes, this multi-capacity 400V to 10kV oil immersed step-up transformer is specially optimized for new energy power generation characteristics. The Yd11 three-phase balance structure can effectively buffer input voltage fluctuation caused by sunlight and wind speed changes, automatically adjust three-phase current balance, and stabilize 10kV medium-voltage output. Meanwhile, the built-in harmonic suppression capability can filter most clutter generated by new energy inverter equipment, improving grid-connected power quality. The excellent short-circuit withstand and transient overload resistance can cope with instantaneous power surge during equipment startup and operation, ensuring long-term safe and stable grid-connected operation of distributed power systems.