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12500kVA Oil Filled Distribution Transformers

12500kVA Oil Filled Distribution Transformers

Name: China Cheap 12500kVA Oil Filled Distribution Transformers Manufacturers Suppliers Factory
Brand: GNEE
SKU: 268120196

Product Name: 12,500kVA Oil Filled Distribution Transformers
Capacity: 12,500kVA
Voltage: High-voltage side 11kV / Low-voltage side 0.4kV (Three Phase Oil Immersed Transformer)
Delivery Year: 2024
Country: Italy
Key Advantages:
Oil Immersed Transformer with efficient cooling design ensures stable operation in high-temperature environments;
Three Phase Oil Immersed Transformer provides balanced three-phase output, ideal for industrial systems requiring high-load capacity;
Oil Filled Transformers use low-loss silicon steel laminations, meeting EU IEC energy efficiency standards;
Customized design adapted to Italian grid voltage fluctuations, with a delivery cycle reduced to 60 days.

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Have questions? GNEE sales representatives are available for live chat now

Send E-mail: sales@gneeelectric.com

Tel: +8615824687445

Product Performance of Oil Immersed Transformer

12500kVA Oil filled distribution transformers

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The 12,500kVA Oil Filled Distribution Transformers are specialized Three Phase Oil Immersed Transformer systems designed for medium-to-high voltage distribution networks. Their superior performance makes them indispensable for industrial, energy, and infrastructure applications. Key features include:

Highly Efficient Energy-Saving:

The Oil Immersed Transformer utilizes high-purity transformer oil as an insulating and cooling medium, significantly reducing copper and iron losses. Standby losses are 20% lower than the national standard (GB/T 20052), meeting international energy efficiency ratings.

Reliability and Durability:

The three-phase oil-immersed structure (Three Phase Oil Immersed Transformer) ensures balanced loading, with short-circuit resistance up to 100% rated current. It operates stably across extreme temperatures (-30°C to +50°C) and high humidity.

Safety and Environmental Compliance:

The Oil Filled Transformers integrate pressure-relief valves and sealed tanks to prevent oil leakage. Eco-friendly materials meet RoHS and REACH certification requirements.

Flexible Customization:

Supports multiple voltage configurations (e.g., 11kV/35kV) and a frequency range of 100-120Hz, suitable for substations, factories, and large commercial complexes.

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Products parameter

Rated capacity (kVA)	High voltage(KV)	Voltage Combination		Connective group label	No-load loss(KW)	Load loss (KW)	No-load current(%)	Short circuit impedance (%)	Weight (KG)
Rated capacity (kVA)	High voltage(KV)	High pressure tap range	Low voltage(KV)	Connective group label	No-load loss(KW)	Load loss (KW)	No-load current(%)	Short circuit impedance (%)	Weight of oil	Total weight
30	20/10	±52.5% ±22.5%	0.4	Dyn11	0.09	0.66	2.1	5.5	180	420
50					0.13	0.96	2.0		150	495
63					0.15	1.145	1.9		170	560
80					0.18	1.37	1.8		190	635
100					0.2	1.65	1.6		215	710
125					0.24	1.98	1.5		250	840
160					0.29	2.42	1.4		285	945
200					0.33	2.86	1.3		340	1125
250					0.4	3.35	1.2		390	1295
315					0.48	4.01	1.1		445	1475
400					0.57	4.73	1.0		515	1712
500					0.68	5.66	1.0	6.0	460	1995
630					0.81	6.82	0.9		565	2450
800					0.98	8.25	0.9		635	2765
1000					1.15	11.33	0.7		840	3650
1250					1.35	13.2	0.7		970	4220
1600					1.63	15.95	0.6		1105	4800
2000					1.95	19.14	0.6		1205	5240
2500					2.34	22.22	0.5		1300	5650

12500kVA Oil filled distribution transformers

Maintenance Guide of Oil Filled Transformers

To extend the lifespan of Oil Filled Transformers and ensure safe operation, follow these maintenance practices:

Regular Inspections:

Check Three Phase Oil Immersed Transformer oil levels, quality (acid value, dielectric loss), and sealing every quarter. Ensure oil levels remain within safety markers.

Load Monitoring:

Avoid prolonged overloading and maintain balanced three-phase current (≤5% deviation) to prevent localized overheating.

Cooling System Care:

Clean radiator surfaces, inspect fan and pump functionality, and prevent excessive temperature in Oil Immersed Transformer units.

Annual Maintenance:

Conduct insulation resistance tests, partial discharge inspections, and component tightening by certified technicians. Replace aging parts promptly.

Emergency Actions:

Immediately disconnect power if unusual noises, oil leaks, or sudden temperature spikes occur. Avoid using inferior oil substitutes.

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Why choose us?

GNEE Group Since 2008, specializing in the transformer field for 18 years, has delivered more than 50,000 units of equipment globally.

GNEE strictly follows the comprehensive acceptance testing process to ensure that the performance of each device meets the standards. Our products and services have been successfully applied in more than 50 countries and regions around the world. As a trusted global industrial partner, we are always committed to helping customers achieve their sustainable development vision through high-quality products and full-process services.

Support
• Pre-sales: Free technical consulting, drawing review, and installation training.
• After-sales:
o Global warranty for 2 years; 5-year warranty on core components.
o 7×24-hour remote support, fault response within <24 hours.
o Operation manual provided.

SGS certification certificate

12500kVA Oil filled distribution transformers
Production environment

12500kVA Oil filled distribution transformers

Our factory

12500kVA Oil filled distribution transformers

FAQ

Q1: What application scenarios is the Oil Immersed Transformer suitable for?

A: It is suitable for high-voltage transmission and distribution, industrial production facilities, substations, and other environments that require high load capacity and excellent heat dissipation performance.
Technical Advantage: With 18 years of industry experience, we use a three-dimensional wound core technology to reduce no-load losses by 15% compared to traditional lamination processes, while achieving ±0.5mm precision stacking to ensure long-term stable operation.
User Case: In a large steel plant expansion project, our oil immersed transformer (5000kVA) ensured the stability of continuous power supply thanks to its high load tolerance and low loss characteristics.

Q2: What parameters should be considered when choosing a Dry-type Transformer?

A: Key parameters include rated capacity (50kVA-5000kVA), voltage level, and temperature rise limits.
Core Advantage: We use epoxy resin + fiberglass insulation materials, with a fire resistance rating reaching UL94 V-0 standard, making it ideal for high-safety environments such as shopping malls and hospitals.

Q3: How does an Amorphous Alloy Transformer reduce electricity costs in remote areas?

A: By using amorphous alloy tape cores, no-load losses are reduced by 50%-70% compared to traditional silicon steel transformers, making them particularly suitable for rural grids with fluctuating loads.

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