30KV Fully Sealed Three-phase Oil-immersed Power Plant Distribution Transformer

30kv Oil immersed Transformer Technical Specifications

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- Input voltage: 30kV
- Output voltage: 0.4kv 0.415kv 0.420kv
- Capacity: 30-30000 kva
- Frequency: 50 hz
- Remark: voltage, capacity, frequency, connection group and loss can be customized according to customer requirements

Products Specification

Rated Capacity (kVA)	High Voltage (kV)	H.V Tap Range (%)	Low Voltage (kV)	Vector Group	Short-circuit Impedance (%)	No-load Loss (kW)	On-load Loss (kW)	No-load Current (%)	Weight (kg)	Overall Dimension(mm)			Gauge (mm)
										L	W	H
30	6 6.3 10 10.5 11 30 33	±5% ±2*2.5%	0.4	Dyn11	4	33	630	1.5	380	1050	650	780	550*550
50						43	910	1.2	510	1200	720	870	550*660
63						50	1090	1.1	600	1260	780	890	550*660
80						60	1310	1.0	645	1310	730	915	550*660
100						75	1580	0.9	720	1400	860	920	550*660
125						85	1890	0.8	850	1410	890	925	550*660
160						100	2310	0.6	900	1420	910	930	660*660
200						120	2730	0.6	940	1430	935	980	660*660
250						140	3200	0.6	1180	1535	930	1025	660*660
315						170	3830	0.5	1370	1595	925	1050	820*660
400						200	4520	0.5	1530	1610	905	1100	820*660
500						240	5410	0.5	1830	1690	935	1150	820*660
630					4.5	320	6200	0.3	2220	1800	950	1230	1070*660
800						380	7500	0.3	2590	1800	1100	1250	1070*660
1000						450	10300	0.3	3060	1900	1130	1290	1070*820
1250						530	12000	0.2	3600	2000	1190	1360	1070*820
1600						630	14500	0.2	4250	2130	1265	1450	1070*820
2000					5	750	18300	0.2	5000	2250	1340	1530	1070*1070
2500						900	21200	0.2	5900	2380	1420	1650	1070*1

 

 

 

112.5KVA 30kv Oil immersed Transformer Case show

112.5 KVA transformer specifications and data sheet

Delivered to	Egypt
Year	2018
Model	S11-112.5 KVA-30/0.4KV
Type	Oil Immersed Power Transformer
Standard	IEC60076
Rated Power	112.5 MVA
Frequency	50 HZ
Phase	Three
Cooling Type	ONAF
Primary Voltage	11 KV
Secondary Voltage	0.4 KV
Winding Material	Copper
Vector Group	Dyn11
Impedance	4%
Tap Changer	NLTC
Tapping Range	±2*2.5%
No Load Loss	0.24KW
On Load Loss	1.8KW
Accessories	Standard Configuration

 

Packing and Delivery

1.Rural Electrification in China's Mountainous Regions

Judenda's 30 kV three-phase oil-immersed transformers have become critical assets in upgrading rural power grids across China's remote mountainous regions. Notably, engineers strategically deployed these transformers in Henan Province to address persistent low-voltage challenges arising from long-distance power transmission. This initiative effectively stabilized electricity supply for communities previously plagued by unreliable power due to geographical barriers.

2.Industrial Power Supply in Southeast Asian Manufacturing Zones

In Southeast Asia, Judenda's transformers have been adopted by industrial parks in Vietnam and Thailand to support high-density manufacturing operations. The 30 kV oil-immersed units provide stable voltage conversion for heavy machinery, reducing downtime caused by voltage fluctuations.

3.Renewable Energy Integration in South American Solar Farms

A solar farm in Chile integrated Judenda's 30 kV three-phase oil-immersed transformers to manage step-up voltage for grid connection. The transformers' superior thermal management and minimal power loss maximized energy transfer efficiency from photovoltaic arrays to the national grid.

4.Urban Grid Modernization in Eastern Europe

In Poland, urban grid modernization projects chose Judenda's transformers to replace aging infrastructure.The 30 kV oil-immersed units enhanced grid reliability in densely populated areas, supporting smart city initiatives.

 

Introduction of S11 25kVA 30kV/0.4kV 3 Phase Oil-Immersed Electric Distribution Transformer

The iron core of S11-M series low loss energy-saving transformer produced by our company adopts laminated structure.

This product is based on fully absorbing the advanced technology and process of domestic oil immersed transformer, combined with the technical level of our company, putting the reliability of the product in the first place, at the same time, the no-load loss and no-load current of the product are greatly reduced.

Parameters of oil-immersed transformers voltage 30kV/0.4kV

ated capacity(kVA)	Voltage	Maximum no-load losses (kW)	Maximum on-load losses(kW)	Short circuit impedance Uk (% )
25	30/0.4			4

Advantages of a three-phase oil-immersed transformer S11-25KVA

-The core of silicon steel is made of 0.18 ~ 0.3mm orientation silicon steel sheet stacked by punching and shearing, which has good stability.

-The coil is made of pure copper. The acetal enamelled wire is used for high voltage and oxygen-free copper conductor or copper foil for low voltage to improve the short-circuit resistance.

-The Dyn11 connection symbol is used to avoid the influence of higher harmonics. It provides high resistance against uncompensated load and improves the quality of power supply.

-Vacuum oiling is adopted by the transformer to remove bubbles in the core and ensure stable insulating property.

 

 

GNEE 30 KV Three-phase Oil-immersed Power Distribution Transformer FAQ>>>

1.What is a 30kV Three-Phase Oil-Immersed Transformer?

Engineers at GNEE design a 30kV three-phase oil-immersed transformer to efficiently manage power distribution for medium-voltage networks. It uses oil as a cooling and insulating medium, ensuring stable performance in demanding environments. Ideal for industrial, commercial, and renewable energy systems, this transformer supports three-phase electrical loads with a voltage rating of 30kV.

 

2.Where is the 30kV Three-Phase Oil-Immersed Transformer used?

Engineers widely use this transformer in power grids, substations, manufacturing plants, and renewable energy projects. Its robust design suits outdoor installations, providing reliable voltage regulation for industries requiring high-capacity, three-phase power distribution.

 

3.How does GNEE's 30kV Oil-Immersed Transformer Excel?

Key benefits include superior heat dissipation, extended lifespan due to corrosion-resistant materials, and low maintenance needs. The oil-immersed design ensures optimal insulation and protection against electrical faults, making it a cost-effective solution for continuous operation.

 

4.How to maintain a 30kV Three-Phase Oil-Immersed Transformer?

Although regular oil testing, insulation checks, and cleaning of bushings are essential for transformer maintenance, GNEE transformers nonetheless require minimal upkeep. That said, periodic inspections by certified technicians remain critical to ensure peak operational efficiency and strict adherence to safety standards.

 

5.Does the 30kV Three-Phase Oil-Immersed Transformer offer energy efficiency?

Yes. GNEE prioritizes energy efficiency with advanced core materials and optimized designs, reducing no-load losses and aligning with global standards like IEEE and IEC.

 

6.Does it meet international certifications?

All GNEE 30kV Three-Phase Oil-Immersed Transformers comply with ISO, CE, and RoHS certifications, ensuring safety, environmental responsibility, and global market compatibility.

 

7.Can the transformer be customized?

Yes. GNEE offers tailored solutions for voltage ratios, cooling methods, and enclosure types to meet specific project requirements.

 

8.What is the warranty period?

GNEE provides a standard 5-year warranty, with extended options available. Our support team ensures prompt troubleshooting and spare parts availability.

 

9.How to order a 30kV Three-Phase Oil-Immersed Transformer?

Contact GNEE's sales team via email or our website for quotes, technical specs, and delivery timelines. We serve clients globally with reliable logistics partnerships.