500 KVA 33 KV oil type distribution transformer

introduction of 500 KVA 33 KV oil type transformer

 

Our 500 KVA power transformer was designed with advanced technology and adopts high quality material and components which result in reliable quality and long operation time.

 

1. Winding Design

• A 500 kVA 33 kV power transformer is designed with advanced technology and high-quality materials for reliable quality and long operation time. Key design features:
• Windings are made of high-quality copper.
• Both HV and LV windings are wound using coil-winding machines; the copper strips and wires are meticulously selected and paper-covered, which acts as insulation between turns and layers.

 

2. Oil Tank Construction

• The oil tank is the transformer housing containing the iron core, windings and transformer oil.
• The corrugated tank structure is fully sealed: the corrugations expand and compress with oil volume changes, isolating the transformer from the atmosphere and preventing oil deterioration and moisture ingress.
• After oil removal, rust removal and phosphating treatment, the tank surface is coated with rainproof paint, providing moisture and salt-spray protection.

 

Technical Specification

Parameter	Example value
Rated power	500 kVA
Voltage combination	e.g. 33/6.6 kV, 33/11 kV or project-specific
Type	Oil-type distribution transformer, without conservator, bushings on top
Cooling	ONAN
Frequency	50 Hz / 60 Hz
Vector group	Dyn11 / Yyn0 per project
Standards	IEC 60076, GB/T 6451 or project specification

 

 

 

500 KVA 33 KV oil filled transformer application

 

A 500 kVA 33 kV oil-type distribution transformer is used to step down voltage in power distribution networks for residential, industrial, and commercial applications. Its applications include powering lighting and electronics, supporting industrial production, and serving as a crucial component in power substations for areas like neighborhood units, hotels, and large worksites.

 

 

• Power distribution: at the end-use area, converting high voltage to lower voltage for final consumption.
• Industrial uses: supplying power for industrial and agricultural networks, including petroleum, metallurgy, chemical and textile enterprises.
• Commercial and residential use: lighting for residential areas, commercial establishments such as hotels, and electronic equipment.
• Substations: part of small substations serving neighborhoods, high-rise buildings or large worksites.
• Power generation: distribution and transmission of power from renewable energy sources.

 

Conclusion

The 500 kVA 33 kV fully‑sealed corrugated‑tank oil‑immersed distribution transformer is a robust, low‑maintenance distribution solution. Its sealed structure avoids contact between insulating oil and ambient air. Project engineers shall confirm voltage ratio, vector group, cooling mode and anti‑corrosion grade according to site climate conditions such as coastal salt‑spray or high‑humidity environment.

 

Request 500kVA 33kV Transformer Datasheet & Quotation

GNEE supplies 33 kV series oil‑immersed distribution transformers including 500 kVA rating. We support custom voltage ratio, vector group, anti‑corrosion coating and full‑set test reports.

 

Please provide below project parameters for customized offer:

• ‑ Exact voltage ratio (HV / LV) ‑ Vector group requirement
• ‑ Site environment: normal / coastal salt‑spray / high‑temperature desert
• ‑ Frequency (50 Hz or 60 Hz)
• ‑ Order quantity and destination port

Our power‑equipment engineering team will deliver technical proposal and competitive quotation within 24 hours.

company profile

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GNEE Electric has strong production capacity and an efficient marketing team.

 

Our transformer products include 500kV, 400kV, 330kV, 220kV, and 110kV ultra-high voltage transformers, various dry-type transformers/oil immersed transformers/amorphous alloy transformers of 35kV and below, new energy transformers, and prefabricated substations,

 

Export series: single-phase transformer, three-phase transformer, cylindrical transformer, isolation transformer, control transformer, voltage regulator and other products, And various specifications of special transformers such as grounding transformers, arc suppression coils, Bitcoin transformers, prefabricated cabins, reactors, electric furnace transformers, rectifier transformers, mining transformers, marine transformers, etc.

 

GNEE Electric has successively passed ISO9001, ISO14001, ISO45001, SA8000 system certification. At the same time, 10kV and 35KV level distribution transformers and box type substations have obtained interna- tional Electrotechnical Commission IEC certification, US UL certification, German TUV certification, EU CE certification, Dutch KEMA certification, and GOST certification. Our product sales cover the global market, including 72 countries and regions such as the United States, Europe, Canada, Mexico, etc.

 

transformer Workshop equipment display

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Get Transformer Order specification

 

GNEE Electric Order specification

When choosing our company's products, please provide the following data to better serve you.
Demander
Demander:	Telephonemethods:	Fax:
Project technical leader:	Telephonemethods:	Mailbox:
Transformer type selection
□Dry transformer {□SC(B) Epoxy resin □SC(B) Non-encapsulated} □American Box(ZGS) {□Terminal type(-Z-) □Ring network type(-H-)} □European Box change(YBM){□ Dry change □Oil change}	□ Oil-immersed transformer{□ Fully sealed(-M-) □Oil-bearing pillow} □Amorphous alloy transformer{□Dry amorphous □ Oil amorphous} □ Special transformer{Rectifier, Furnace, Mine, Etc}

Transformer basic data selection

Country of use:
Phase number:	□Three-phase(S conventional) □ Monophase □Other( )
Frequency:	□50Hz(conventional) □60Hz □ Other( )
Transformer oil:	□#25(conventional) □#45(minimum temperature below-25℃)
Rated capacity:	□( )kVA Conditions of use □Outdoor type □Indoor type
Altitude:	□Less than 1000m(conventional) □1000-2000m □3000m以上 over
Rated voltage(High voltage)	□6kV □10kV □20kV □35kV □66kV □110kV □220kV □Other( )
Rated voltage(Low pressure)	□0.4kV □0.66kV □10kV □10.5kV □35kV □其他 Other( )
Connected group	□Dyn11(conventional) □Yyn0 □YNd11 □li0(Single-phase) □Other( )
Impedance(%):	□4% □4.5% □5.5% □6% □6.5% □7.5% □8% □Other( )
Voltage regulation mode	□Voltage regulation without excitation(conventional) □On-load voltage regulation(Z)
Voltage regulation range	□±2*2.5% □±5% □±3*2.5% □Other( )

Transformer accessory selection

□Fan □Temperature control{□ Common □With 485 computer interface} □Dry case{□ Ordinary steel sheet □Aluminum alloy » Stainless steel} □Protection level of dry case(□IP20(Conventional) □IP( )} □Dry case height requirements{□None □Requirements[ ]} □ Cable out mode of the dry variable shell {□ Up-and-out □ Up-and-down □Down-in/DOWN-out □Down-in/UP-out □Down-in/DOWN-out □Down-in/ side-out [□Left □ Right-out]}

Note: 1. (Dry change requirements s 100kVA transformer does not include fans, such as fans, need to be charged 2. (Oil changes <630kVA transformer does not include temperature control, gas relay, if necessary, need to increase the fee)

Other special requirements(additional charges apply below)

Dry transformer	□Shell and bottom plate{□Ordinary □Fully sealed} □Travel switch □Magnetic lo □Zero sequence transformer □Copper bar to the low voltage cabinet □Protective mesh □Lighting □100kVA or less Fan □Shock absorber
Oil-immersed transformer	□No.45 oil for non-low temperature areas □Designated brand on-load voltage regulator □400kVA and below low voltage outlet OABC phase with wiring terminals □630kVA or below requires temperature control □800kVA or below Low voltage outlet phase 0 requires wiring terminals □630kVA and below must be equipped with gas relay

 

GNEE Electric Industrial Layout

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Asia:China, Philippines, Cambodia, Malaysia, Pakistan, Indonesia, Vietnam, Mongolia, Japan, Taiwan Province, Bangladesh, Sri Lanka, Lebanon, Saudi Arabia, Turkey, Armenia, Saudi Arabia, Saudi Arabia, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan

 

Africa:Egypt, Ethiopia, Angola, Botswana, Burundi, Cape Verde, Congo, Guinea, Ghana, Gabon, Zimbabwe, Cameroon, Kenya, Rwanda, Malawi, Mauritius, Mauritania, Mozambique, South Africa, Nigeria, Somalia, Chad, Central Africa

 

North America: Aruba, Panama, Dominican Republic, Costa Rica, Honduras, Caribbean region,Canada, United States, Mexico, El Salvador, Guatemala, Jamaica

 

Europe: Bulgaria, North Macedonia, Finland, Norway, Ukraine, Greece, Hungary, Italy, United Kingdom

 

South America: Argentina, Paraguay, Ecuador, Colombia, Guyana, Mexico, Uruguay, Chile

 

Middle East: The Middle East region

 

Oceania: Australia, Papua New Guinea. Fiji