44kV 2MVA Live Front Transformer
- Primary Voltage Ratings: 44kV
- Secondary Voltage Ratings: 600/347V
- H.V. TAP RANGE: 44 kV ± 2 x 2.5%
- CONNECTION TYPE: Dyn1
- TYPE: Live front pad mounted
- BIL: 250/30kV
- Standards: CSA
- Application: Apartment
- Power Rating: 2 MVA
- Certificate: cUL
- Cooling Method: KNAN
The 44kV 2MVA Live Front Transformer was manufactured and tested by Daelim Transformer in August 2024 and successfully delivered to a utility partner in Canada. The customer completed the installation in September 2024, and the transformer is now providing electricity to 300 residents in an apartment complex in Ontario.
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Completed installation of 44kV 2MVA live front transformer for apartment
Core Features:
- Compliance with CSA C88 & CSA C227.5 standards
- Anti-tamper design
- Live front type
- High voltage side equipped with lightning arresters, capable of withstanding transient overvoltages up to 118kV
- Low voltage side-out design
- Environmentally friendly, reliable, and fireproof, it uses vegetable oil with a higher ignition point as the insulating fluid, offering excellent insulation performance and a high fireproof rating.
Key Design Highlights:
We specialize in custom transformer designs, and this particular unit features several advanced and unique design elements.
Tamper-Proof Pad-Mounted Design
This transformer is designed with a tamper-proof, pad-mounted structure, making it ideal for integration into underground power systems with a voltage rating of up to 44kV.
Low Voltage Side-Out Design
The low voltage compartment is located separately from the high voltage compartment, mounted on the side of the oil tank. This arrangement enhances safety by isolating the low and high voltage sections, minimizing risk.
Gauges and Drain & Sample Valve
To improve safety, efficiency, and compliance, the transformer features lockable externally mounted gauges and a drain & sample valve. These allow operators to inspect the oil and check the gauges without accessing the HV/LV bushings inside the main enclosure. This design also helps to prevent theft of insulating oil.
Get PricePressure Relief Device
The 44kV 2MVA Live Front Transformer is equipped with a pressure relief device located at the top of the oil tank. In the event of a sudden rise in internal pressure that exceeds the preset safety threshold, the relief device is automatically activated to quickly release excess pressure or gas from the transformer. Once the internal pressure returns to a safe, normal range, the device will automatically reset and return to its original state, ensuring continued safe operation of the transformer.
Additionally, Daelim Transformer has incorporated a thoughtful design enhancement to the pressure relief device by adding a small, waterproof and dustproof cover. This feature helps protect the device from environmental elements, ensuring reliable performance in diverse operating conditions.
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HV Compartment
The high voltage compartment features three live front bushings, rated for 46kV and 417A. The bushings are made from porcelain, known for its high temperature resistance, corrosion resistance, and excellent insulating properties, ensuring reliable performance even in harsh environmental conditions.
Three 44kV lightning arresters are installed to enhance the transformer's safety and reliability. These arresters divert surge voltages and prevent damage caused by lightning strikes, ultimately extending the lifespan of the transformer, reducing maintenance costs, and minimizing downtime risks for the residents.
Contact Daelim TransformerLV Compartment
The design of the low voltage compartment is particularly notable. It incorporates a side-outlet throat design and a separate lockable hatch for added security. This makes it ideal for installation in public areas such as apartment complexes.
The low voltage compartment is equipped with four 6-hole epoxy resin spade bushings, one of which is dedicated to grounding. Given the transformer’s responsibility for supplying power to 300 households, we have also included LV cable support to ensure secure and efficient cable management.
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Gauges and Monitoring
The transformer is equipped with oil level and oil temperature indicators, each featuring two contacts for remote monitoring.
If the oil level becomes too high or too low, an alarm signal is transmitted to the remote control room, alerting the operator to take appropriate action (i.e., adding or releasing insulating oil).
In the event that the internal oil temperature exceeds 65°C, an alarm is triggered, prompting maintenance personnel to inspect the transformer. If the temperature reaches 80°C, the transformer will automatically disconnect from the power grid to protect both the transformer and any connected equipment from damage.
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