500 kVA Single Phase Platform Transformer


  • Primary Voltage Ratings: 24940 Y / 14400 V
  • Secondary Voltage Ratings: 347V
  • Standards: CSA C2.2, CAN/CAS - C802.1
  • Application: Ultility for Canada
  • Power Rating: 500 kVA
  • Certificate: cUL

The 500 kVA single phase platform transformer designed and developed by Daelim transformer for the utility market in Canada. It's an oil type distribution transformer that has been built for reliable performance, safety, and high efficiency in extreme and harsh operating conditions. This distribution platform transformer is featured with lightweight design, oil natural air, natural cooling system and other design aspects that enable it to comply with CSA C2.2 standards. The complete design and built quality of this transformer is done to satisfy energy efficiency as per CAN/CAS - C802.1 Canadian standards. When commissioned this transformer strengthens the electricity distribution and supports stable voltage in urban and rural areas and small communities of Canada.


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Rating 500 kVA   No load losses 5800 W
Primary Voltage 24940 Y / 14400 V Impedance 4%
Secondary Voltage 347 V Insulation system A (105 C)
Frequency 60 Hz Cooling ONAN
Polarity Additives Oil mineral oil
Material Winding HV Aluminum Color ANSI 70 Gray
Material Winding LV Aluminum Weight 1680 Kg
Load losses at rated voltage 850 W Oil Volume 511 liters

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500 kVA Transformer Type and features

500 kVA Transformer Type and features

It is an oil immersed type single phase transformer with maximum power rating of 500 KVA. The transformer operates on 60 Hz frequency and is designed to offer additive type polarity. The transformer also uses aluminum as winding material for both high voltage and low voltage windings. The transformer is delivered in ANSI 70 gray color as required by client requirements and national standards.

To ensure safety of the transformer and its operation, transformer is provided with features like

Pressure relief valve Lift Lug
Tap Changers Drain valves
Tank grounding Lightening arresters bosses
Oil level indicators Grounding terminals

With all the transformer parts, features and safety equipment the total transformer weight is about 1680 Kgs.

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Voltage Rating and Tap Changer

Efficient and safe Voltage regulation is very important for single phase transformers like these. This transformer has a high voltage winding rating of 2490 volts with Y configuration and a maximum line to line voltage of 14400 volts. The transformer also offers five tap positions to change voltage rating as per the electrical load or supply requirements. 

% HV Taps Position
105 1/A
102.5 2/B
100 3/C
97.5 4/D
96 5/E

The transformer lower voltage winding section offers a maximum voltage of 347 volts only that is considered both safe and reliable for utility application in all regions of Canada. 

Load Performance

The transformer is featured with strong thermal and electrical design to ensure that it delivers safe electricity with stable voltage output to the consumers and remains efficient in high current operations. The transformer offer:

Load losses of 850 W at the rated voltage

No load losses of 5800 /w

Impedance of 3.59 % at 85 degree centigrade​​​​​​​

Simulation level BIL 125/30 KV

Insulation and Cooling System

This single phase platform transformer is designed and developed with A rating insulation that can easily take 105 degree centigrade. To insulate the transformer winding and core section, the transformer is immersed in mineral oil. The transformer tank is designed to take 511 liters of mineral oil that not only insulation internal parts but also work to remove waste heat. 

The transformer works on an oil natural air natural cooling system and is designed with two large fin surface areas on the left and right side of the transformer. These large fins ensure efficient waste heat removal without any need of additional systems like cooling fans or dedicated heat exchanger. 

Advanced Engineering Design

The custom design of the single phase platform transformer is done to meet the specific utility requirements of Canada. Some of its prominent features are:

Transformer windings are made from high quality aluminum material ensuring both high conductivity and cost effectiveness at the same time. Windings are carefully sized, designed and winded to ensure quality operations.​​​​​​​

The size of the transformer tank is also very carefully sized to ensure the proper quantity of oil and is manufactured with high quality steel sheets to ensure strength.​​​​​​​

Tank surface is also treated to increase in resistance against moisture and extreme weather conditions in Canada.​​​​​​​

Oil used in the transformer was free from any type PCBs at the time of delivery.

The transformer designed and built by Daelim transformers complies with all international like IEEE and NAS and Canada national standards like CSA C2.2 and CAN/CSA-C802.1.

Why Choose Daelim

Daelim Transformer offer inhouse designed, manufacturing, testing, and complete shipment of electrical transformers with compliance with all types of international and national standards. With decades of experience in transformer design and development we offer custom transformers in record time and ensure safety, reliability and efficiency of our client operations. 

We offer:

Comprehensive international standard compliance.​​​​​​​

Complete logistic planning from factory to the site of installation.​​​​​​​

Advance thermal and electrical modeling tools to analyze transformer performance during the design stage.

Complete Factory acceptance testing, site accepting testing and after installation support.

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Looking for a quality manufacturer of 500 kVA single phase platform transformers for utility applications.

Contact our support team and we will do our best to fill your needs in the best manner possible.

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