5000 kVA Substation Transformer
- Primary Voltage Ratings: 44kV
- Secondary Voltage Ratings: 4.16kV
- H.V. TAP RANGE: 41800V-46200V
- TYPE: SL-5000-44-4.16
- BIL: 75-250kV
- Standards: CSA C88
- Application: Distribution system, BESS, Data center, Industry, Renewable energy, EV charging
- Power Rating: 5000 kVA
Daelim Transformer's expertise in designing and producing medium and high voltage transformers is commendable. Being able to manufacture 5000 kVA transformers that comply with various international standards and adherence to industry requirements. Having the capability to meet international standards ensures that the transformers produced by Daelim Transformer are reliable, safe, and suitable for use in different regions and markets around the world.
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SL-5000-44-4.16 Transformer
The SL-5000-44-4.16 transformer is a three-phase substation transformer primarily designed for stepping down voltage from 44kV to 4.16kV. It has a self-cooling capacity of 5000 kVA, making it suitable for various industrial applications.
The high-voltage (HV) insulation level of the transformer is 250 kV, while the low-voltage (LV) insulation level is 75 kV. This indicates the maximum voltage the insulation can withstand without breaking down.
The insulating oil used in the transformer is free of detectable levels of polychlorinated biphenyls (PCBs) at the time of manufacture, with a concentration of less than 2 parts per million (PPM). This ensures environmental safety and compliance with regulations regarding the use of PCBs.
The transformer offers five levels of voltage regulation on the high-voltage side, ranging from 41800V to 46200V. This provides flexibility in adjusting the output voltage according to specific requirements.
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The total weight of the SL-5000-44-4.16 transformer is approximately 15000 kg, which includes the weight of the core, windings, tank, and other components.
The liquid preservation system of the transformer operates at a maximum positive pressure of 98 kPa (lbf/in2) and a maximum negative pressure of 0.1 kPa (lbf/in2). The tank is designed for vacuum filling at 0.1 kPa (lbf/in2) to ensure proper insulation and cooling.
The liquid level inside the transformer is maintained below the top surface of the highest point of the highest manhole flange at 25℃, with a distance of 300 mm (in). The liquid level changes by approximately 7 mm (in) per 10℃ change in the liquid temperature, allowing for thermal expansion and contraction of the insulating oil.
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SZ-5000-33-11 Transformer
The SZ-5000-33-11 transformer is designed in accordance with the IEC standard. It has a high voltage rating of 33kV, a low voltage rating of 11kV, and a capacity of 5000kVA.
This transformer features an oil conservator and breathing valve. The oil conservator is a device used to protect the transformer's insulating oil. It allows for the expansion and contraction of the oil while maintaining a separation between the oil and the atmosphere. The breathing valve helps to balance the internal and external oil volume changes, ensuring that the internal pressure of the transformer remains within the desired range.
Both the high voltage and low voltage casings of this transformer are of ejection design. This means that the top part of the casings protrudes outward. The ejection design facilitates easier connection and maintenance of the transformer.
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The SZ-5000-33-11 transformer is equipped with an on-load tap changer, which allows for the adjustment of the turns ratio and thus the output voltage, without the need to de-energize the transformer.
In terms of dimensions, the transformer is 3715mm long, 3100mm wide, and 3055mm high. The insulating liquid used in the transformer weighs 3850kg, while the active part (which includes the core and windings) weighs 5540kg. The total weight of the transformer is 11000kg, which includes all the components and the weight of the insulating liquid.
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SL-5000(6667)-44-12.47 Transformer
The SL-5000(6667)-44-12.47 transformer is designed in compliance with both IEEE C57 and CSA C88-M90 standards. The transformer bushings are designed with the primary side top-mounted and side-mounted on the secondary side.
The primary voltage of this transformer is 44kV, while the secondary voltage is 12.47kV. It has a self-cooling(ONAN) capacity of 5000 kVA, and when the two sets of fans are turned on (ONAF), the capacity can be increased to 6667 kVA. The 5000 kVA transformer has an additional cooling mechanism to enhance its capacity.
The transformer features qualitrol brand components for monitoring and control. The oil temperature, pressure relief device, and pressure indicator are provided by Qualitrol, ensuring accurate and reliable monitoring of the transformer's oil and pressure conditions.
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The SL-5000(6667)-44-12.47 transformer is equipped with a five-position tap changer, allowing for voltage adjustments between 41800V and 46200V. This flexibility enables the transformer to accommodate different voltage requirements.
The low-voltage bushings are gray in color and made of porcelain material, while the high-voltage bushing is also gray but made of polymer material. This choice of materials ensures proper insulation and performance for their respective voltage levels.
Before leaving the factory, the Daelim transformer undergoes comprehensive testing according to CSA standards. This ensures that the transformer meets all quality and performance requirements. As a result, when the Canadian customer received and tested the transformer, there were no abnormalities, leading to their satisfaction with the product. This positive experience has fostered a long-term partnership between the customer and Daelim transformer.
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5000kVA Substation Transformer
SL-5000(6667)-44-12.47 Transformer
The pictured transformers, with a capacity of 5000 kVA, were designed and manufactured by Daelim Transformer. The image depicts the customer conducting tests on these transformers. The transformer operates at a high voltage of 44 kV and a low voltage of 12.47 kV. It has a capacity of 5000 kVA and utilizes the ONAN/ONAF cooling method.
SL-5000-44-4.16 Transformer
The pictured transformer is situated in a distribution substation in Ontario, Canada. It is designed and manufactured by Daelim Transformer. The high voltage rating is 44kV, while the low voltage rating is 4.16kV. Both high and low voltage designs have air terminal chamber.
SZ-5000-33-11 Transformer
The transformer in the picture is a Daelim Transformer designed and produced according to the IEC standard. It operates at a high voltage of 33kV, a low voltage of 11kV, and has a capacity of 5MVA. The cooling method employed is ONAN (Oil Natural Air Natural).
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